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Hematite

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size growth rates at increasing annealing temperature. These differences in the growth rates are translated into a progressive development of a subparticle structure at the nanoscale (super small). At lower temperatures (350–600 °C), single particles crystallize. However, at higher temperatures
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axis. In this configuration, spin canting does not reduce the energy. The magnetic properties of bulk hematite differ from their nanoscale counterparts. For example, the Morin transition temperature of hematite decreases with a decrease in the particle size. The suppression of this transition has
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and is attributed to the presence of impurities, water molecules and defects in the crystals lattice. Hematite is part of a complex solid solution oxyhydroxide system having various contents of H2O (water), hydroxyl groups and vacancy substitutions that affect the mineral's magnetic and crystal
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As mentioned earlier, hematite is an important mineral for iron ore. The physical properties of hematite are also employed in the areas of medical equipment, shipping industries, and coal production. Having high density and capable as an effective barrier against X-ray passage, it often is
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Hematite has been sourced to make pigments since earlier origins of human pictorial depictions, such as on cave linings and other surfaces, and has been employed continually in artwork through the eras. In Roman times, the pigment obtained by finely grinding hematite was known as
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incorporated into radiation shielding. As with other iron ores, it often is a component of ship ballasts because of its density and economy. In the coal industry, it can be formed into a high specific density solution, to help separate coal powder from impurities.
1158:. It forms the basis for red, purple, and brown iron-oxide pigments, as well as being an important component of ochre, sienna, and umber pigments. The main producer of hematite for the pigment industry is India, followed distantly by Spain. 881:
The magnetic structure of α-hematite was the subject of considerable discussion and debate during the 1950s, as it appeared to be ferromagnetic with a Curie temperature of approximately 1,000 K (730 °C), but with an extremely small
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Dang, M.-Z.; Rancourt, D. G.; Dutrizac, J. E.; Lamarche, G.; Provencher, R. (1998). "Interplay of surface conditions, particle size, stoichiometry, cell parameters, and magnetism in synthetic hematite-like materials".
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of this iron-oxide mineral in writing, drawing, and decoration is among the earliest in human history. To date, the earliest known human use of the powdery mineral is 164,000 years ago by the inhabitants of the
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for hematite have been achieved by dry-heating a two-line ferrihydrite precursor prepared from solution. Hematite exhibited temperature-dependent magnetic coercivity values ranging from 289 to 5,027
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Hematite is often shaped into beads, tumbling stones, and other jewellery components. Hematite was once used as mourning jewelry. Certain types of hematite- or iron-oxide-rich clay, especially
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formed from a water solution. "Knowing just how the hematite on Mars was formed will help us characterize the past environment and determine whether that environment was favorable for life".
1058:. Because terrestrial hematite is typically a mineral formed in aqueous environments or by aqueous alteration, this detection was scientifically interesting enough that the second of the two 1318: 1694:
Benvenuti, M.; Dini, A.; D'Orazio, M.; Chiarantini, L.; Corretti, A.; Costagliola, P. (June 2013). "The tungsten and tin signature of iron ores from Elba Island (Italy)".
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in the water and collect in layers at the bottom of the lake, spring, or other standing water. Hematite can also occur in the absence of water, usually as the result of
936:(23–400 kA/m). The origin of these high coercivity values has been interpreted as a consequence of the subparticle structure induced by the different particle and 226:
Tabular to thick crystals; micaceous or platy, commonly in rosettes; radiating fibrous, reniform, botryoidal or stalactitic masses, columnar; earthy, granular, oolitic
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is a clay that is colored by varying amounts of hematite, varying between 20% and 70%. Red ochre contains unhydrated hematite, whereas yellow ochre contains
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Metallic grey, dull to bright "rust-red" in earthy, compact, fine-grained material, steel-grey to black in crystals and massively crystalline ores
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in what now is South Africa, possibly for social purposes. Hematite residues are also found in graves from 80,000 years ago. Near
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axis. The disappearance of the moment with a decrease in temperature at 260 K (−13 °C) is caused by a change in the
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Three gemmy quartz crystals containing bright rust-red inclusions of hematite, on a field of sparkly black specular hematite
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Minerals and Cut Stones: Reference Book Containing Condensed and Simplified Descriptions from Standard Works on Mineralogy
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is a pigment used in traditional Swedish house paints. Originally, it was made from tailings of the Falu mine.
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Hematite occurs naturally in black to steel or silver-gray, brown to reddish-brown, or red colors. It is
17: 4533: 4513: 1990:"Formation of the hematite-bearing unit in Meridiani Planum: Evidence for deposition in standing water" 128: 1735:
Dzyaloshinsky, I. E. (1958). "A thermodynamic theory of "weak" ferromagnetism of antiferromagnetics".
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partly embedded in rock at the Opportunity landing site. Image is around 5 cm (2 in) across.
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spacecraft in orbit around Mars. The mineral was seen in abundance at two sites on the planet, the
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chemical properties. Two other end-members are referred to as protohematite and hydrohematite.
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Vallina, B.; Rodriguez-Blanco, J. D.; Brown, A. P.; Benning, L. G.; Blanco, J. A. (2014).
1721: 8: 4158: 2857: 1309: 928: 854:. Unlike magnetite, it is not noticeably attracted to an ordinary magnet. Hematite is an 650:. Gray hematite is typically found in places that have still, standing water, or mineral 606:
hematite). While these forms vary, they all have a rust-red streak. Hematite is not only
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A cluster of parallel-growth, mirror-bright, metallic-gray hematite blades from Brazil
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Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C. (eds.).
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Micaceous hematite taken with permission from Kelly's Mine, Lustleigh, Devon UK
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Image mosaic from the Mars Exploration Rover Microscopic Imager shows Hematite
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Underground hematite mining is classified as carcinogenic hazard to humans.
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red chalk mines have been found that are from 5000 BC, belonging to the
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showed a significant amount of hematite, much of it in the form of small "
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Hematite, variant specularite (specular hematite), with fine grain shown
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Hematite on Mars as found in form of "blueberries" (named by NASA)
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Gemmological classifications by E. Ya. Kievlenko (1980), updated
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Glotch, Timothy D.; Rogers, D.; Christensen, Philip R. (2005).
1772:"Anisotropic Superexchange Interaction and Weak Ferromagnetism" 1209: 809: 789: 776: 571: 1312:, showing that Hematite consistently leaves a rust-red streak. 415: 4331: 4321: 4311: 4294: 4289: 4279: 4238: 4068: 4048: 3984: 3916: 3657: 3632: 3577: 3252: 3219: 3125: 3115: 3074: 2764: 2391: 762: 750: 737: 715: 705: 3480: 2911: 1811: 1324:
Hematite in Scanning Electron Microscope, magnification 100x
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was sent to a site in the Terra Meridiani region designated
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Rich deposits of hematite have been found on the island of
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The spectral signature of hematite was seen on the planet
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Minerals and mines of Spain Vol 4. Oxides and Hidroxides
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Minerales y Minas de España. Vol. 4. Óxidos e hidróxidos
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site, near the Martian equator at 0° longitude, and the
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This article is about the mineral. For other uses, see
1450: 1381:. Cambridge: Cambridge University Press. p. 73. 424: 1662:"Iron Oxides Prehistoric Mines: A European Overview" 1054:. Several other sites also showed hematite, such as 433: 427: 2073:Glotch, Timothy D.; Christensen, Philip R. (2005). 1965:(Press release). NASA. May 27, 1998. Archived from 567:at temperatures above 950 °C (1,740 °F). 448: 442: 439: 418: 412: 409: 1542: 2072: 1641:(Press release). AAAS. ASU News. October 17, 2007 692:, which is responsible for the red color of many 4485: 906:when they are in the plane perpendicular to the 850:Hematite shows only a very feeble response to a 729:. The English name of the stone is derived from 696:, ancient, or otherwise highly weathered soils. 1543:Cornell, Rochelle M.; Schwertmann, Udo (1996). 1538: 1536: 874:at 948 K (675 °C), above which it is 2253: 3496: 2927: 2355: 1866:obtained from carbonated 2-line ferrihydrite" 1734: 1376: 639:) with the same chemical formula, but with a 1533: 1254:Hematite carving, 5 cm (2 in) long 914:which causes the moments to align along the 1987: 835:that have been mined since the time of the 3503: 3489: 3451: 2934: 2920: 2362: 2348: 1737:Journal of Physics and Chemistry of Solids 1587: 1379:Rock Magnetism: Fundamentals and Frontiers 2201: 2098: 2057: 2028: 2013: 1427: 1377:Dunlop, David J.; Özdemir, Özden (2001). 1212:radiating from a center of platy hematite 1184:A rare pseudo-scalenohedral crystal habit 870:above the Morin transition and below its 246:None, may show partings on {0001} and {10 2284:"Colors from the Earth: Violet Hematite" 1006: 746:the 15th century, which originated from 699: 646:Large deposits of hematite are found in 14: 4486: 2031:"Global mineral distributions on Mars" 1913: 1769: 1659: 1161: 710:The name hematite is derived from the 684:, and along with other iron oxides or 3484: 2915: 2343: 1858:"Enhanced magnetic coercivity of α-Fe 1603: 1601: 1583: 1581: 1404:"IMA–CNMNC approved mineral symbols" 1401: 203:= 13.772(12) Å; Z = 6 894:, but that the low symmetry of the 862:at 250 K (−23 °C), and a 610:than pure iron, but also much more 24: 2878:Volcanogenic massive sulfide (VMS) 1549:. Germany: Wiley. pp. 4, 26. 1444: 489:. Hematite crystals belong to the 25: 4555: 2328: 1941:"Sveriges mest beprövade husfärg" 1598: 1578: 983:. A recently developed process, 975:Hematite is present in the waste 953:A microscopic picture of hematite 563:). With this it forms a complete 387:O: brownish red; E: yellowish red 3462: 3450: 2895: 1873:Journal of Nanoparticle Research 1708:10.1111/j.1475-4754.2012.00692.x 1329: 1317: 1302: 1290: 1271: 1259: 1247: 1235: 1217: 1201: 1189: 1177: 1109:is a synthetic material sold as 1066:. In-situ investigations by the 970: 958: 946: 405: 45: 3064:Yellow, Green, Violet Sapphires 2858:Magmatic nickel-copper-iron-PGE 2848:Kambalda-type komatiitic nickel 2300: 2276: 2254:Calvo Rebollar, Miguel (2009). 2247: 2222: 2195: 2171: 2149: 2115: 2079:Journal of Geophysical Research 2066: 2038:Journal of Geophysical Research 2022: 1994:Journal of Geophysical Research 1988:Christensen, Philip R. (2004). 1981: 1955: 1933: 1907: 1849: 1805: 1763: 1728: 1714: 1687: 1653: 1615:. Minerals Zone. Archived from 2868:Sedimentary exhalative (SedEx) 1914:Redman, Chris (May 20, 2009). 1669:Anthropologica et Præhistorica 1631: 1508: 1483: 1395: 1370: 618:is a polymorph of hematite (γ- 13: 1: 3510: 2941: 2843:Iron oxide copper gold (IOCG) 2208:. Firefly Books. p. 53. 2029:Bandfield, Joshua L. (2002). 1588:Morgenthau, Mengo L. (1923). 1363: 965:Crystal structure of hematite 743: 3456:List of gemstones by species 3425:List of individual gemstones 3086:Precious White and Fire Opal 1757:10.1016/0022-3697(58)90076-3 1208:Golden acicular crystals of 845: 7: 4519:Minerals in space group 167 2131:Lunar and Planetary Science 1341: 1134:. In Spanish, it is called 491:rhombohedral lattice system 470:compound with the formula, 10: 4560: 2833:Carbonate-hosted lead-zinc 1170: 1116: 1088: 919:been observed in hematite 866:antiferromagnet or weakly 751: 716: 703: 29: 4440: 4402: 4345: 4267: 4038: 3975: 3914: 3876: 3869: 3829: 3731: 3685: 3678: 3518: 3448: 3440:List of sapphires by size 3417: 3305: 3243: 3190: 3181: 3094: 3054: 3011: 2966: 2956: 2949: 2891: 2820: 2733: 2684: 2527: 2390: 2381: 2202:Oldershaw, Cally (2003). 1893:10.1007/s11051-014-2322-5 1722:"List of Classifications" 656:Yellowstone National Park 391: 381: 368: 345: 337: 327: 317: 307: 297: 287: 274: 264: 254: 240: 230: 220: 212: 207: 189: 172: 155:Hexagonal scalenohedral ( 149: 137: 127: 117: 107: 75: 65: 60: 44: 39: 32:Hematite (disambiguation) 27:Common iron oxide mineral 3435:List of emeralds by size 493:which is designated the 236:Penetration and lamellar 4005:Nickel silver (alpacca) 2373:, mineral mixtures and 2288:www.naturalpigments.com 1835:10.1023/A:1012655729417 1660:Levato, Chiara (2016). 1491:"Hematite Mineral Data" 1060:Mars Exploration Rovers 1002: 736:, which was taken from 481:and is widely found in 260:Uneven to subconchoidal 1815:Hyperfine Interactions 1799:10.1103/PhysRev.120.91 1460:Handbook of Mineralogy 1408:Mineralogical Magazine 1152:sil atticum antiquorum 1103:intaglio engraved gems 1016: 904:canting of the moments 822:Linear Pottery culture 759:, "blood-red stone"). 648:banded iron formations 303:Bright red to dark red 4346:Other natural objects 3003:Natural marine pearls 2883:Orogenic gold deposit 2828:Banded iron formation 2205:Firefly Guide to Gems 1770:Moriya, Tōru (1960). 1280:banded iron formation 1010: 929:magnetic coercivities 700:Etymology and history 293:Metallic to splendent 119:Strunz classification 4539:Jewellery components 3821:Wire wrapped jewelry 3801:Repoussé and chasing 3122:, pink, yellow-green 2100:10.1029/2004JE002389 2059:10.1029/2001JE001510 2015:10.1029/2003JE002233 1916:"The next iron rush" 1619:on November 15, 2016 1353:Mineral redox buffer 1097:, have been used in 1033:Mars Global Surveyor 802:Pinnacle Point caves 4504:Iron oxide pigments 4363:Ebonite (vulcanite) 3469:Minerals portal 3041:Precious Black Opal 2902:Minerals portal 2838:Heavy mineral sands 2230:"Magnetic Hematite" 2143:2005LPI....36.2159G 2091:2005JGRE..110.9006G 2050:2002JGRE..107.5042B 2006:2004JGRE..109.8003C 1885:2014JNR....16.2322V 1827:1998HyInt.117..271D 1791:1960PhRv..120...91M 1749:1958JPCS....4..241D 1613:Industrial Minerals 1429:10.1180/mgm.2021.43 1420:2021MinM...85..291W 1402:Warr, L.N. (2021). 1162:Industrial purposes 900:spin–orbit coupling 858:material below the 654:, such as those in 576:ore mineral of iron 198:= 5.038(2) Å; 129:Dana classification 4544:Symbols of Alabama 4499:Iron(III) minerals 3708:Jewellery designer 3291:Opaque iridescent 3182:Jewelry-Industrial 3128:yellow, blue, pink 1278:Red hematite from 1142:, from the Arabic 1017: 662:. The mineral may 518:. It has the same 338:Optical properties 4534:Magnetic minerals 4514:Trigonal minerals 4481: 4480: 4398: 4397: 4268:Organic gemstones 3865: 3864: 3478: 3477: 3306:Industrial stones 3301: 3300: 3177: 3176: 2909: 2908: 2816: 2815: 2269:978-84-95063-99-1 2215:978-1-55297-814-6 1111:magnetic hematite 1075:Martian spherules 1039:2001 Mars Odyssey 892:antiferromagnetic 856:antiferromagnetic 757:haimatitēs lithos 520:crystal structure 398: 397: 16:(Redirected from 4551: 3925:Britannia silver 3874: 3873: 3683: 3682: 3505: 3498: 3491: 3482: 3481: 3467: 3466: 3465: 3454: 3453: 3430:List of diamonds 3188: 3187: 2964: 2963: 2936: 2929: 2922: 2913: 2912: 2900: 2899: 2898: 2853:Lateritic nickel 2809: 2797: 2785: 2773: 2761: 2749: 2726: 2714: 2702: 2677: 2665: 2653: 2641: 2629: 2617: 2605: 2593: 2581: 2569: 2557: 2545: 2520: 2508: 2496: 2484: 2472: 2460: 2448: 2436: 2420: 2408: 2388: 2387: 2364: 2357: 2350: 2341: 2340: 2322: 2321: 2319: 2318: 2304: 2298: 2297: 2295: 2294: 2280: 2274: 2273: 2251: 2245: 2244: 2242: 2240: 2226: 2220: 2219: 2199: 2193: 2192: 2190: 2189: 2175: 2169: 2168: 2166: 2164: 2153: 2147: 2146: 2128: 2119: 2113: 2112: 2102: 2070: 2064: 2063: 2061: 2035: 2026: 2020: 2019: 2017: 1985: 1979: 1978: 1976: 1974: 1959: 1953: 1952: 1950: 1948: 1937: 1931: 1930: 1928: 1926: 1911: 1905: 1904: 1870: 1853: 1847: 1846: 1821:(1–4): 271–319. 1809: 1803: 1802: 1776: 1767: 1761: 1760: 1732: 1726: 1725: 1718: 1712: 1711: 1691: 1685: 1684: 1682: 1680: 1666: 1657: 1651: 1650: 1648: 1646: 1635: 1629: 1628: 1626: 1624: 1605: 1596: 1595: 1585: 1576: 1575: 1573: 1571: 1540: 1531: 1530: 1528: 1526: 1512: 1506: 1505: 1503: 1501: 1487: 1481: 1480: 1478: 1476: 1457: 1448: 1442: 1441: 1431: 1399: 1393: 1392: 1374: 1333: 1321: 1306: 1294: 1275: 1263: 1251: 1239: 1221: 1205: 1193: 1181: 1064:Meridiani Planum 1052:Valles Marineris 1023:by the infrared 962: 950: 872:Néel temperature 860:Morin transition 754: 753: 745: 741:lapis haematites 721: 720: 714:word for blood, 643:like magnetite. 641:spinel structure 638: 637: 636: 628: 627: 574:as an important 562: 561: 560: 546: 545: 544: 536: 535: 517: 516: 515: 507: 506: 458: 457: 454: 453: 450: 447: 444: 441: 436: 435: 432: 429: 426: 423: 420: 417: 414: 411: 347:Refractive index 319:Specific gravity 280: 249: 182: 167: 158: 82: 81:(repeating unit) 55:hematite crystal 49: 37: 36: 21: 4559: 4558: 4554: 4553: 4552: 4550: 4549: 4548: 4484: 4483: 4482: 4477: 4436: 4394: 4383:Spondylus shell 4341: 4263: 4034: 4020:Stainless steel 3971: 3955:Sterling silver 3915:Precious metal 3910: 3878:Precious metals 3861: 3825: 3727: 3674: 3514: 3509: 3479: 3474: 3463: 3461: 3444: 3413: 3297: 3239: 3183: 3173: 3090: 3050: 3007: 2952: 2945: 2940: 2910: 2905: 2896: 2894: 2887: 2863:Porphyry copper 2812: 2803: 2791: 2779: 2767: 2755: 2743: 2729: 2720: 2708: 2696: 2680: 2671: 2659: 2647: 2635: 2623: 2611: 2599: 2587: 2575: 2563: 2551: 2539: 2523: 2514: 2502: 2490: 2478: 2466: 2454: 2442: 2426: 2414: 2402: 2377: 2368: 2335:MineralData.org 2331: 2326: 2325: 2316: 2314: 2306: 2305: 2301: 2292: 2290: 2282: 2281: 2277: 2270: 2252: 2248: 2238: 2236: 2228: 2227: 2223: 2216: 2200: 2196: 2187: 2185: 2177: 2176: 2172: 2162: 2160: 2155: 2154: 2150: 2126: 2120: 2116: 2071: 2067: 2033: 2027: 2023: 1986: 1982: 1972: 1970: 1969:on May 13, 2007 1961: 1960: 1956: 1946: 1944: 1939: 1938: 1934: 1924: 1922: 1912: 1908: 1868: 1865: 1861: 1854: 1850: 1810: 1806: 1779:Physical Review 1774: 1768: 1764: 1733: 1729: 1720: 1719: 1715: 1692: 1688: 1678: 1676: 1664: 1658: 1654: 1644: 1642: 1637: 1636: 1632: 1622: 1620: 1607: 1606: 1599: 1586: 1579: 1569: 1567: 1557: 1546:The Iron Oxides 1541: 1534: 1524: 1522: 1514: 1513: 1509: 1499: 1497: 1489: 1488: 1484: 1474: 1472: 1470: 1455: 1449: 1445: 1400: 1396: 1389: 1375: 1371: 1366: 1344: 1337: 1334: 1325: 1322: 1313: 1307: 1298: 1295: 1286: 1276: 1267: 1264: 1255: 1252: 1243: 1240: 1231: 1222: 1213: 1206: 1197: 1194: 1185: 1182: 1173: 1164: 1148:ochra hispanica 1119: 1091: 1081:are apparently 1044:Terra Meridiani 1005: 995:iron district. 973: 966: 963: 954: 951: 884:magnetic moment 848: 788: 781: 775: 752:αἱματίτης λίθος 734:hématite pierre 708: 702: 635: 632: 631: 630: 626: 623: 622: 621: 619: 559: 556: 555: 554: 552: 543: 540: 539: 538: 534: 531: 530: 529: 527: 514: 511: 510: 509: 505: 502: 501: 500: 498: 495:alpha polymorph 479: 475: 461:also spelled as 438: 408: 404: 363: 357:= 3.150–3.220, 356: 278: 247: 199: 180: 165: 160: 156: 103: 99: 95: 91: 86:iron(III) oxide 80: 79: 56: 35: 28: 23: 22: 15: 12: 11: 5: 4557: 4547: 4546: 4541: 4536: 4531: 4526: 4521: 4516: 4511: 4509:Hematite group 4506: 4501: 4496: 4494:Oxide minerals 4479: 4478: 4476: 4475: 4470: 4465: 4460: 4455: 4450: 4445: 4444:Related topics 4441: 4438: 4437: 4435: 4434: 4429: 4424: 4418: 4412: 4406: 4404: 4400: 4399: 4396: 4395: 4393: 4392: 4387: 4386: 4385: 4375: 4370: 4365: 4360: 4355: 4349: 4347: 4343: 4342: 4340: 4339: 4334: 4329: 4324: 4319: 4314: 4309: 4308: 4307: 4302: 4292: 4287: 4282: 4277: 4271: 4269: 4265: 4264: 4262: 4261: 4256: 4251: 4246: 4241: 4236: 4231: 4226: 4221: 4216: 4211: 4206: 4201: 4191: 4186: 4181: 4176: 4171: 4166: 4161: 4156: 4151: 4146: 4141: 4136: 4131: 4126: 4121: 4116: 4111: 4106: 4101: 4096: 4091: 4086: 4081: 4076: 4066: 4061: 4056: 4051: 4045: 4043: 4036: 4035: 4033: 4032: 4027: 4022: 4017: 4012: 4007: 4002: 3997: 3992: 3987: 3981: 3979: 3973: 3972: 3970: 3969: 3964: 3963: 3962: 3952: 3947: 3942: 3937: 3932: 3927: 3921: 3919: 3912: 3911: 3909: 3908: 3903: 3898: 3893: 3888: 3882: 3880: 3871: 3867: 3866: 3863: 3862: 3860: 3859: 3854: 3849: 3844: 3839: 3833: 3831: 3827: 3826: 3824: 3823: 3818: 3816:Wire sculpture 3813: 3808: 3803: 3798: 3793: 3788: 3783: 3778: 3773: 3768: 3763: 3762: 3761: 3756: 3751: 3741: 3735: 3733: 3729: 3728: 3726: 3725: 3720: 3715: 3710: 3705: 3700: 3695: 3689: 3687: 3680: 3676: 3675: 3673: 3672: 3671: 3670: 3665: 3655: 3650: 3645: 3640: 3635: 3630: 3625: 3620: 3615: 3610: 3605: 3600: 3595: 3590: 3585: 3580: 3575: 3570: 3565: 3560: 3555: 3550: 3545: 3540: 3535: 3530: 3524: 3522: 3516: 3515: 3508: 3507: 3500: 3493: 3485: 3476: 3475: 3473: 3472: 3449: 3446: 3445: 3443: 3442: 3437: 3432: 3427: 3421: 3419: 3415: 3414: 3412: 3411: 3397: 3383: 3375: 3370: 3365: 3360: 3355: 3349: 3344: 3338: 3328: 3326:Petrified wood 3323: 3315: 3309: 3307: 3303: 3302: 3299: 3298: 3296: 3295: 3289: 3283: 3278: 3265: 3260: 3255: 3249: 3247: 3241: 3240: 3238: 3237: 3232: 3227: 3217: 3212: 3207: 3202: 3196: 3194: 3185: 3179: 3178: 3175: 3174: 3172: 3171: 3165: 3160: 3155: 3134: 3129: 3123: 3113: 3112:, polychromous 3107: 3100: 3098: 3092: 3091: 3089: 3088: 3083: 3078: 3071: 3066: 3060: 3058: 3052: 3051: 3049: 3048: 3043: 3038: 3033: 3028: 3023: 3017: 3015: 3009: 3008: 3006: 3005: 3000: 2995: 2990: 2985: 2980: 2974: 2972: 2961: 2954: 2953: 2950: 2947: 2946: 2939: 2938: 2931: 2924: 2916: 2907: 2906: 2892: 2889: 2888: 2886: 2885: 2880: 2875: 2870: 2865: 2860: 2855: 2850: 2845: 2840: 2835: 2830: 2824: 2822: 2818: 2817: 2814: 2813: 2811: 2810: 2798: 2786: 2774: 2762: 2750: 2737: 2735: 2731: 2730: 2728: 2727: 2715: 2703: 2690: 2688: 2682: 2681: 2679: 2678: 2666: 2654: 2642: 2630: 2618: 2606: 2594: 2582: 2570: 2558: 2546: 2533: 2531: 2525: 2524: 2522: 2521: 2509: 2497: 2485: 2473: 2461: 2449: 2437: 2421: 2409: 2396: 2394: 2385: 2379: 2378: 2367: 2366: 2359: 2352: 2344: 2338: 2337: 2330: 2329:External links 2327: 2324: 2323: 2299: 2275: 2268: 2246: 2221: 2214: 2194: 2170: 2148: 2114: 2085:(E9): E09006. 2065: 2044:(E6): E65042. 2021: 2000:(E8): E08003. 1980: 1954: 1932: 1906: 1863: 1859: 1848: 1804: 1762: 1743:(4): 241–255. 1727: 1713: 1702:(3): 479–506. 1686: 1652: 1630: 1597: 1577: 1555: 1532: 1507: 1495:WebMineral.com 1482: 1469:978-0962209727 1468: 1443: 1414:(3): 291–320. 1394: 1387: 1368: 1367: 1365: 1362: 1361: 1360: 1355: 1350: 1343: 1340: 1339: 1338: 1335: 1328: 1326: 1323: 1316: 1314: 1308: 1301: 1299: 1296: 1289: 1287: 1277: 1270: 1268: 1265: 1258: 1256: 1253: 1246: 1244: 1241: 1234: 1232: 1223: 1216: 1214: 1207: 1200: 1198: 1195: 1188: 1186: 1183: 1176: 1172: 1169: 1163: 1160: 1118: 1115: 1090: 1087: 1050:site near the 1004: 1001: 972: 969: 968: 967: 964: 957: 955: 952: 945: 888:Bohr magnetons 852:magnetic field 847: 844: 786: 779: 773: 704:Main article: 701: 698: 633: 624: 565:solid solution 557: 541: 532: 512: 503: 477: 473: 466:, is a common 396: 395: 393: 389: 388: 385: 379: 378: 372: 366: 365: 361: 354: 349: 343: 342: 339: 335: 334: 331: 325: 324: 321: 315: 314: 311: 305: 304: 301: 295: 294: 291: 285: 284: 281: 272: 271: 268: 262: 261: 258: 252: 251: 244: 238: 237: 234: 228: 227: 224: 218: 217: 214: 210: 209: 208:Identification 205: 204: 193: 187: 186: 176: 170: 169: 153: 147: 146: 141: 139:Crystal system 135: 134: 131: 125: 124: 121: 115: 114: 111: 105: 104: 101: 97: 93: 89: 83: 73: 72: 70:Oxide minerals 67: 63: 62: 58: 57: 50: 42: 41: 26: 9: 6: 4: 3: 2: 4556: 4545: 4542: 4540: 4537: 4535: 4532: 4530: 4527: 4525: 4522: 4520: 4517: 4515: 4512: 4510: 4507: 4505: 4502: 4500: 4497: 4495: 4492: 4491: 4489: 4474: 4471: 4469: 4466: 4464: 4461: 4459: 4456: 4454: 4451: 4449: 4448:Body piercing 4446: 4443: 4442: 4439: 4433: 4430: 4428: 4425: 4422: 4419: 4416: 4413: 4411: 4408: 4407: 4405: 4401: 4391: 4388: 4384: 4381: 4380: 4379: 4376: 4374: 4371: 4369: 4366: 4364: 4361: 4359: 4356: 4354: 4351: 4350: 4348: 4344: 4338: 4337:Tortoiseshell 4335: 4333: 4330: 4328: 4325: 4323: 4320: 4318: 4315: 4313: 4310: 4306: 4303: 4301: 4298: 4297: 4296: 4293: 4291: 4288: 4286: 4283: 4281: 4278: 4276: 4273: 4272: 4270: 4266: 4260: 4257: 4255: 4252: 4250: 4247: 4245: 4242: 4240: 4237: 4235: 4232: 4230: 4227: 4225: 4222: 4220: 4217: 4215: 4212: 4210: 4207: 4205: 4202: 4199: 4195: 4192: 4190: 4187: 4185: 4182: 4180: 4177: 4175: 4172: 4170: 4167: 4165: 4162: 4160: 4157: 4155: 4152: 4150: 4147: 4145: 4142: 4140: 4137: 4135: 4132: 4130: 4127: 4125: 4122: 4120: 4117: 4115: 4112: 4110: 4107: 4105: 4102: 4100: 4097: 4095: 4092: 4090: 4087: 4085: 4082: 4080: 4077: 4074: 4070: 4067: 4065: 4062: 4060: 4057: 4055: 4052: 4050: 4047: 4046: 4044: 4042: 4037: 4031: 4028: 4026: 4023: 4021: 4018: 4016: 4013: 4011: 4008: 4006: 4003: 4001: 3998: 3996: 3993: 3991: 3988: 3986: 3983: 3982: 3980: 3978: 3974: 3968: 3965: 3961: 3958: 3957: 3956: 3953: 3951: 3948: 3946: 3943: 3941: 3938: 3936: 3933: 3931: 3928: 3926: 3923: 3922: 3920: 3918: 3913: 3907: 3904: 3902: 3899: 3897: 3894: 3892: 3889: 3887: 3884: 3883: 3881: 3879: 3875: 3872: 3868: 3858: 3855: 3853: 3850: 3848: 3845: 3843: 3840: 3838: 3835: 3834: 3832: 3828: 3822: 3819: 3817: 3814: 3812: 3809: 3807: 3804: 3802: 3799: 3797: 3794: 3792: 3789: 3787: 3784: 3782: 3779: 3777: 3774: 3772: 3769: 3767: 3764: 3760: 3757: 3755: 3752: 3750: 3747: 3746: 3745: 3742: 3740: 3737: 3736: 3734: 3730: 3724: 3721: 3719: 3716: 3714: 3711: 3709: 3706: 3704: 3701: 3699: 3696: 3694: 3693:Bench jeweler 3691: 3690: 3688: 3684: 3681: 3677: 3669: 3666: 3664: 3661: 3660: 3659: 3656: 3654: 3651: 3649: 3646: 3644: 3641: 3639: 3636: 3634: 3631: 3629: 3626: 3624: 3621: 3619: 3616: 3614: 3611: 3609: 3606: 3604: 3601: 3599: 3596: 3594: 3591: 3589: 3586: 3584: 3581: 3579: 3576: 3574: 3571: 3569: 3566: 3564: 3561: 3559: 3556: 3554: 3551: 3549: 3546: 3544: 3541: 3539: 3536: 3534: 3531: 3529: 3526: 3525: 3523: 3521: 3517: 3513: 3506: 3501: 3499: 3494: 3492: 3487: 3486: 3483: 3471: 3470: 3459: 3458: 3457: 3447: 3441: 3438: 3436: 3433: 3431: 3428: 3426: 3423: 3422: 3420: 3416: 3409: 3405: 3401: 3398: 3395: 3391: 3387: 3384: 3382: 3379: 3376: 3374: 3371: 3369: 3366: 3364: 3361: 3359: 3356: 3353: 3350: 3348: 3345: 3343: 3339: 3336: 3332: 3329: 3327: 3324: 3322: 3319: 3316: 3314: 3311: 3310: 3308: 3304: 3294: 3290: 3288: 3284: 3282: 3279: 3277: 3274: 3270: 3266: 3264: 3261: 3259: 3256: 3254: 3251: 3250: 3248: 3246: 3242: 3236: 3233: 3231: 3228: 3225: 3221: 3218: 3216: 3213: 3211: 3208: 3206: 3203: 3201: 3198: 3197: 3195: 3193: 3189: 3186: 3180: 3170: 3166: 3164: 3161: 3159: 3156: 3154: 3150: 3146: 3142: 3138: 3135: 3133: 3130: 3127: 3124: 3121: 3117: 3114: 3111: 3108: 3105: 3102: 3101: 3099: 3097: 3093: 3087: 3084: 3082: 3079: 3076: 3072: 3070: 3067: 3065: 3062: 3061: 3059: 3057: 3053: 3047: 3044: 3042: 3039: 3037: 3034: 3032: 3029: 3027: 3024: 3022: 3021:Pink sapphire 3019: 3018: 3016: 3014: 3010: 3004: 3001: 2999: 2996: 2994: 2993:Blue Sapphire 2991: 2989: 2986: 2984: 2981: 2979: 2976: 2975: 2973: 2971: 2970: 2965: 2962: 2959: 2955: 2948: 2944: 2937: 2932: 2930: 2925: 2923: 2918: 2917: 2914: 2904: 2903: 2890: 2884: 2881: 2879: 2876: 2874: 2871: 2869: 2866: 2864: 2861: 2859: 2856: 2854: 2851: 2849: 2846: 2844: 2841: 2839: 2836: 2834: 2831: 2829: 2826: 2825: 2823: 2821:Deposit types 2819: 2807: 2802: 2799: 2795: 2790: 2787: 2783: 2778: 2775: 2771: 2766: 2763: 2759: 2754: 2751: 2747: 2742: 2739: 2738: 2736: 2732: 2724: 2719: 2716: 2712: 2707: 2704: 2700: 2695: 2692: 2691: 2689: 2687: 2683: 2675: 2670: 2667: 2663: 2658: 2655: 2651: 2646: 2643: 2639: 2634: 2631: 2627: 2622: 2619: 2615: 2610: 2607: 2603: 2598: 2595: 2591: 2586: 2583: 2579: 2574: 2571: 2567: 2562: 2559: 2555: 2550: 2547: 2543: 2538: 2535: 2534: 2532: 2530: 2526: 2518: 2513: 2510: 2506: 2501: 2498: 2494: 2489: 2486: 2482: 2477: 2474: 2470: 2465: 2462: 2458: 2453: 2450: 2446: 2441: 2438: 2434: 2430: 2425: 2422: 2418: 2413: 2410: 2406: 2401: 2398: 2397: 2395: 2393: 2389: 2386: 2384: 2380: 2376: 2372: 2365: 2360: 2358: 2353: 2351: 2346: 2345: 2342: 2336: 2333: 2332: 2313: 2309: 2303: 2289: 2285: 2279: 2271: 2265: 2261: 2257: 2250: 2235: 2231: 2225: 2217: 2211: 2207: 2206: 2198: 2184: 2180: 2174: 2158: 2152: 2144: 2140: 2136: 2132: 2125: 2118: 2110: 2106: 2101: 2096: 2092: 2088: 2084: 2080: 2076: 2069: 2060: 2055: 2051: 2047: 2043: 2039: 2032: 2025: 2016: 2011: 2007: 2003: 1999: 1995: 1991: 1984: 1968: 1964: 1958: 1942: 1936: 1921: 1920:Money.cnn.com 1917: 1910: 1902: 1898: 1894: 1890: 1886: 1882: 1878: 1874: 1867: 1852: 1844: 1840: 1836: 1832: 1828: 1824: 1820: 1816: 1808: 1800: 1796: 1792: 1788: 1784: 1780: 1773: 1766: 1758: 1754: 1750: 1746: 1742: 1738: 1731: 1723: 1717: 1709: 1705: 1701: 1697: 1690: 1674: 1670: 1663: 1656: 1640: 1634: 1618: 1614: 1610: 1604: 1602: 1594:. p. 23. 1593: 1592: 1584: 1582: 1566: 1562: 1558: 1556:9783527285761 1552: 1548: 1547: 1539: 1537: 1521: 1517: 1511: 1496: 1492: 1486: 1471: 1465: 1461: 1454: 1447: 1439: 1435: 1430: 1425: 1421: 1417: 1413: 1409: 1405: 1398: 1390: 1388:9780521000987 1384: 1380: 1373: 1369: 1359: 1356: 1354: 1351: 1349: 1346: 1345: 1332: 1327: 1320: 1315: 1311: 1305: 1300: 1293: 1288: 1285: 1281: 1274: 1269: 1262: 1257: 1250: 1245: 1238: 1233: 1229: 1228:cylinder seal 1226: 1220: 1215: 1211: 1204: 1199: 1192: 1187: 1180: 1175: 1174: 1168: 1159: 1157: 1156:Spanish brown 1153: 1149: 1145: 1141: 1137: 1133: 1132:caput mortuum 1129: 1125: 1114: 1112: 1108: 1104: 1100: 1096: 1095:Armenian bole 1086: 1084: 1080: 1076: 1072: 1070: 1065: 1061: 1057: 1053: 1049: 1045: 1041: 1040: 1035: 1034: 1030: 1026: 1022: 1014: 1009: 1000: 998: 994: 990: 986: 982: 978: 971:Mine tailings 961: 956: 949: 944: 943: 942: 939: 935: 930: 925: 922: 921:nanoparticles 917: 913: 909: 905: 901: 898:sites allows 897: 893: 889: 885: 879: 877: 873: 869: 868:ferromagnetic 865: 861: 857: 853: 843: 840: 838: 834: 829: 827: 823: 819: 815: 811: 807: 803: 798: 793: 791: 785: 782: ·  778: 772: 768: 764: 760: 758: 749: 748:Ancient Greek 742: 739: 735: 732: 731:Middle French 728: 724: 719: 713: 707: 697: 695: 691: 687: 686:oxyhydroxides 683: 680:processes in 679: 675: 671: 669: 665: 661: 660:North America 657: 653: 649: 644: 642: 617: 613: 609: 605: 601: 597: 593: 589: 585: 581: 577: 573: 568: 566: 550: 525: 521: 496: 492: 488: 484: 480: 469: 465: 462: 456: 402: 394: 390: 386: 384: 380: 376: 373: 371: 370:Birefringence 367: 364:= 2.870–2.940 360: 353: 350: 348: 344: 340: 336: 332: 330: 326: 322: 320: 316: 312: 310: 306: 302: 300: 296: 292: 290: 286: 282: 277: 273: 269: 267: 263: 259: 257: 253: 245: 243: 239: 235: 233: 229: 225: 223: 222:Crystal habit 219: 215: 211: 206: 202: 197: 194: 192: 188: 184: 177: 175: 171: 163: 154: 152: 151:Crystal class 148: 145: 142: 140: 136: 132: 130: 126: 122: 120: 116: 112: 110: 106: 87: 84: 78: 74: 71: 68: 64: 59: 54: 48: 43: 38: 33: 19: 4473:Wearable art 4468:Phaleristics 4463:Metalworking 4368:Gutta-percha 4144:Lapis lazuli 3930:Colored gold 3811:Stonesetting 3460: 3404:Pyrophyllite 3373:Serpentinite 3354:(green mica) 3280: 3244: 3224:Baltic amber 3191: 3095: 3055: 3012: 2967: 2893: 2573:Chalcopyrite 2451: 2375:ore deposits 2371:Ore minerals 2315:. Retrieved 2311: 2302: 2291:. Retrieved 2287: 2278: 2259: 2255: 2249: 2239:December 22, 2237:. Retrieved 2233: 2224: 2204: 2197: 2186:. Retrieved 2182: 2173: 2163:December 22, 2161:. Retrieved 2151: 2134: 2130: 2117: 2082: 2078: 2068: 2041: 2037: 2024: 1997: 1993: 1983: 1973:December 22, 1971:. Retrieved 1967:the original 1957: 1947:December 22, 1945:. Retrieved 1935: 1925:December 22, 1923:. Retrieved 1919: 1909: 1876: 1872: 1851: 1818: 1814: 1807: 1782: 1778: 1765: 1740: 1736: 1730: 1716: 1699: 1696:Archaeometry 1695: 1689: 1679:December 22, 1677:. Retrieved 1672: 1668: 1655: 1645:December 22, 1643:. Retrieved 1633: 1623:December 22, 1621:. Retrieved 1617:the original 1612: 1590: 1570:December 22, 1568:. Retrieved 1545: 1525:December 22, 1523:. Retrieved 1519: 1510: 1500:December 22, 1498:. Retrieved 1494: 1485: 1475:December 22, 1473:. Retrieved 1459: 1446: 1411: 1407: 1397: 1378: 1372: 1310:Streak plate 1225:Cypro-Minoan 1165: 1155: 1151: 1147: 1143: 1139: 1135: 1131: 1127: 1123: 1120: 1110: 1092: 1068: 1056:Aureum Chaos 1037: 1031: 1025:spectrometer 1018: 993:Mesabi Range 974: 926: 915: 907: 886:(0.002  880: 876:paramagnetic 849: 841: 830: 794: 761: 756: 740: 733: 722: 709: 672: 645: 599: 595: 588:pseudomorphs 583: 579: 569: 463: 400: 399: 374: 358: 351: 341:Uniaxial (−) 200: 195: 178: 4410:Art jewelry 4234:Tiger's eye 4139:Labradorite 4089:Chrysocolla 4084:Chrysoberyl 4000:Mokume-gane 3977:Base metals 3749:centrifugal 3718:Silversmith 3593:Ferronnière 3543:Belt buckle 3538:Belly chain 3386:Ophicalcite 3267:Colorless, 3230:Chrysoprase 3141:Spessartine 3106:– Verdelite 2998:Alexandrite 2657:Pentlandite 2633:Molybdenite 2400:Cassiterite 2312:geology.com 2183:geology.com 1879:(3): 2322. 1124:sil atticum 1083:concretions 1069:Opportunity 985:magnetation 938:crystallite 826:Upper Rhine 795:Use of the 664:precipitate 652:hot springs 600:specularite 383:Pleochroism 309:Diaphaneity 174:Space group 18:Specularite 4488:Categories 4244:Tourmaline 4189:Prasiolite 4064:Aventurine 3935:Crown gold 3837:Draw plate 3786:Metal clay 3723:Watchmaker 3713:Lapidarist 3698:Clockmaker 3573:Collar pin 3568:Chatelaine 3390:Serpentine 3378:Aventurine 3352:Listwanite 3143:(malaya), 3110:Indicolite 3104:Tourmaline 3077:(Imperial) 3069:Aquamarine 2801:Wolframite 2777:Sperrylite 2686:Carbonates 2669:Sphalerite 2638:molybdenum 2585:Chalcocite 2488:Pyrolusite 2317:2023-09-07 2293:2023-09-07 2234:Mindat.org 2188:2023-09-07 2157:"Hematite" 1520:Mindat.org 1516:"Hematite" 1453:"Hematite" 1364:References 1348:Mill scale 1144:al-maghrah 1048:Aram Chaos 981:iron mines 912:anisotropy 769:hematite ( 678:weathering 670:activity. 580:kidney ore 468:iron oxide 392:References 276:Mohs scale 162:H–M symbol 109:IMA symbol 51:Brazilian 4524:Iron ores 4390:Toadstone 4327:Operculum 4254:Variscite 4249:Turquoise 4229:Tanzanite 4164:Moonstone 4159:Marcasite 4154:Malachite 4079:Carnelian 4054:Amazonite 4041:gemstones 4015:Pinchbeck 3960:Argentium 3950:Shibuichi 3891:Palladium 3870:Materials 3806:Soldering 3796:Polishing 3771:Engraving 3766:Enameling 3732:Processes 3703:Goldsmith 3638:Tie chain 3613:Neck ring 3603:Lapel pin 3512:Jewellery 3381:quartzite 3333:(Porouse 3331:Cacholong 3293:feldspars 3263:Rhodonite 3258:Amazonite 3245:2nd order 3215:Malachite 3192:1st order 3169:Turquoise 3149:Almandine 3145:Rhodolite 3096:4th order 3056:3rd order 3046:Tanzanite 3031:Tsavorite 3026:Demantoid 3013:2nd order 2969:1st order 2943:Gemstones 2789:Scheelite 2770:beryllium 2758:aluminium 2718:Malachite 2711:magnesium 2706:Magnesite 2699:magnesium 2609:Cobaltite 2549:Argentite 2537:Acanthite 2512:Uraninite 2500:Tantalite 2493:manganese 2476:Magnetite 2440:Columbite 1901:137598876 1785:(1): 91. 1438:235729616 1079:spherules 1013:spherules 989:Minnesota 927:Enhanced 902:to cause 846:Magnetism 837:Etruscans 797:red chalk 616:Maghemite 596:iron rose 592:magnetite 464:haematite 191:Unit cell 185:(no. 167) 4458:Gemology 4432:Fineness 4423:(purity) 4358:Bog-wood 4305:Precious 4285:Ammolite 4224:Sunstone 4214:Sodalite 4209:Sapphire 4169:Obsidian 4109:Fluorite 4099:Diopside 4059:Amethyst 4039:Mineral 4030:Tungsten 4025:Titanium 3940:Electrum 3896:Platinum 3781:Kazaziye 3776:Filigree 3754:lost-wax 3653:Toe ring 3643:Tie clip 3618:Pectoral 3608:Necklace 3583:Cufflink 3558:Bracelet 3553:Bolo tie 3533:Barrette 3400:Pagodite 3368:Fluorite 3363:Selenite 3347:Obsidian 3281:Hematite 3235:Charoite 3210:Nephrite 3200:Lazurite 3158:Amethyst 3120:Heliodor 2806:tungsten 2794:tungsten 2782:platinum 2694:Dolomite 2597:Cinnabar 2529:Sulfides 2505:tantalum 2469:titanium 2464:Ilmenite 2452:Hematite 2433:tantalum 2417:chromium 2412:Chromite 2137:: 2159. 2109:53489327 1843:94031594 1565:96031931 1342:See also 1128:colcotar 1107:Hematine 997:Falu red 991:'s vast 977:tailings 934:oersteds 767:hydrated 694:tropical 690:goethite 688:such as 668:volcanic 604:specular 549:ilmenite 524:corundum 401:Hematite 279:hardness 266:Tenacity 256:Fracture 242:Cleavage 232:Twinning 144:Trigonal 66:Category 53:trigonal 40:Hematite 4529:Glances 4453:Fashion 4427:Finding 4275:Abalone 4184:Peridot 4149:Larimar 4134:Kyanite 4119:Howlite 4104:Emerald 4094:Diamond 3967:Tumbaga 3945:Shakudō 3901:Rhodium 3852:Mandrel 3791:Plating 3744:Casting 3739:Carving 3648:Tie pin 3623:Pendant 3598:Genital 3588:Earring 3418:Related 3394:Calcite 3340:Marble 3321:granite 3318:Graphic 3285:Common 3205:Jadeite 3163:Citrine 3137:Garnets 3132:Peridot 3081:Elbaite 3073:Orange 2988:Emerald 2978:Diamond 2958:Jewelry 2873:Uranium 2753:Bauxite 2602:mercury 2561:Bornite 2517:uranium 2445:niobium 2429:niobium 2139:Bibcode 2087:Bibcode 2046:Bibcode 2002:Bibcode 1881:Bibcode 1823:Bibcode 1787:Bibcode 1745:Bibcode 1609:"Ochre" 1416:Bibcode 1358:Wüstite 1284:Wyoming 1171:Gallery 1140:almagra 1136:almagre 1117:Pigment 1099:gilding 1089:Jewelry 1027:on the 824:at the 818:Hungary 727:pigment 723:(haima) 612:brittle 584:martite 377:= 0.280 329:Density 283:5.5–6.5 270:Brittle 133:4.3.1.2 123:4.CB.05 77:Formula 61:General 4417:(mass) 4353:Bezoar 4259:Zircon 4219:Spinel 4194:Quartz 4129:Jasper 4114:Garnet 4010:Pewter 3995:Copper 3990:Bronze 3917:alloys 3906:Silver 3857:Pliers 3847:Hammer 3759:vacuum 3686:People 3679:Making 3663:pocket 3563:Brooch 3528:Anklet 3313:Jasper 3276:quartz 3184:stones 3153:Pyrope 3036:Spinel 2960:stones 2746:barium 2741:Baryte 2723:copper 2662:nickel 2645:Pyrite 2621:Galena 2614:cobalt 2590:copper 2578:copper 2566:copper 2554:silver 2542:silver 2424:Coltan 2392:Oxides 2266:  2212:  2159:. NASA 2107:  1899:  1841:  1675:: 9–23 1563:  1553:  1466:  1436:  1385:  1210:rutile 1154:, and 896:cation 864:canted 810:Poland 608:harder 590:after 547:) and 313:Opaque 299:Streak 289:Luster 96:, α-Fe 4421:Carat 4415:Carat 4403:Terms 4378:Shell 4332:Pearl 4322:Nacre 4312:Ivory 4300:Black 4295:Coral 4290:Copal 4280:Amber 4239:Topaz 4198:smoky 4069:Beryl 4049:Agate 3985:Brass 3830:Tools 3668:strap 3658:Watch 3633:Tiara 3578:Crown 3548:Bindi 3520:Forms 3269:smoky 3253:Agate 3220:Amber 3167:Blue 3126:Topaz 3116:Beryl 3075:topaz 2765:Beryl 2734:Other 2258:[ 2127:(PDF) 2105:S2CID 2034:(PDF) 1897:S2CID 1869:(PDF) 1839:S2CID 1775:(PDF) 1665:(PDF) 1456:(PDF) 1434:S2CID 1071:rover 814:Lovas 806:Rydno 763:Ochre 738:Latin 712:Greek 706:Ochre 572:mined 553:FeTiO 487:soils 483:rocks 213:Color 4373:Hair 4204:Ruby 4179:Opal 4174:Onyx 4124:Jade 3886:Gold 3842:File 3628:Ring 3408:Talc 3342:onyx 3335:opal 3287:opal 3273:pink 3271:and 2983:Ruby 2674:zinc 2650:iron 2626:lead 2481:iron 2457:iron 2431:and 2383:Ores 2264:ISBN 2241:2018 2210:ISBN 2165:2018 1975:2018 1949:2018 1927:2018 1681:2018 1647:2018 1625:2018 1572:2018 1561:LCCN 1551:ISBN 1527:2018 1502:2018 1477:2018 1464:ISBN 1383:ISBN 1130:and 1036:and 1029:NASA 1021:Mars 1003:Mars 833:Elba 812:and 718:αἷμα 682:soil 674:Clay 598:and 485:and 323:5.26 168:2/m) 88:, Fe 4317:Jet 4073:red 3358:Jet 2405:tin 2095:doi 2083:110 2054:doi 2042:107 2010:doi 1998:109 1889:doi 1831:doi 1819:117 1795:doi 1783:120 1753:doi 1704:doi 1673:126 1424:doi 1282:in 1138:or 979:of 816:in 808:in 658:in 594:), 522:as 497:of 459:), 333:5.3 164:: ( 159:m) 113:Hem 4490:: 3151:, 3147:, 3139:– 3118:– 2310:. 2286:. 2232:. 2181:. 2135:36 2133:. 2129:. 2103:. 2093:. 2081:. 2077:. 2052:. 2040:. 2036:. 2008:. 1996:. 1992:. 1918:. 1895:. 1887:. 1877:16 1875:. 1871:. 1837:. 1829:. 1817:. 1793:. 1781:. 1777:. 1751:. 1739:. 1700:55 1698:. 1671:. 1667:. 1611:. 1600:^ 1580:^ 1559:. 1535:^ 1518:. 1493:. 1458:. 1432:. 1422:. 1412:85 1410:. 1406:. 1150:, 1113:. 1105:. 878:. 839:. 828:. 771:Fe 744:c. 620:Fe 614:. 582:, 528:Al 499:Fe 472:Fe 455:-/ 431:aɪ 416:iː 250:1} 4200:) 4196:( 4075:) 4071:( 3504:e 3497:t 3490:v 3410:) 3406:/ 3402:( 3396:) 3392:/ 3388:( 3337:) 3226:) 3222:( 2935:e 2928:t 2921:v 2808:) 2804:( 2796:) 2792:( 2784:) 2780:( 2772:) 2768:( 2760:) 2756:( 2748:) 2744:( 2725:) 2721:( 2713:) 2709:( 2701:) 2697:( 2676:) 2672:( 2664:) 2660:( 2652:) 2648:( 2640:) 2636:( 2628:) 2624:( 2616:) 2612:( 2604:) 2600:( 2592:) 2588:( 2580:) 2576:( 2568:) 2564:( 2556:) 2552:( 2544:) 2540:( 2519:) 2515:( 2507:) 2503:( 2495:) 2491:( 2483:) 2479:( 2471:) 2467:( 2459:) 2455:( 2447:) 2443:( 2435:) 2427:( 2419:) 2415:( 2407:) 2403:( 2363:e 2356:t 2349:v 2320:. 2296:. 2272:. 2243:. 2218:. 2191:. 2167:. 2145:. 2141:: 2111:. 2097:: 2089:: 2062:. 2056:: 2048:: 2018:. 2012:: 2004:: 1977:. 1951:. 1929:. 1903:. 1891:: 1883:: 1864:3 1862:O 1860:2 1845:. 1833:: 1825:: 1801:. 1797:: 1789:: 1759:. 1755:: 1747:: 1741:4 1724:. 1710:. 1706:: 1683:. 1649:. 1627:. 1574:. 1529:. 1504:. 1479:. 1440:. 1426:: 1418:: 1391:. 916:c 908:c 790:O 787:2 784:H 780:3 777:O 774:2 755:( 634:3 629:O 625:2 602:( 586:( 558:3 551:( 542:3 537:O 533:2 526:( 513:3 508:O 504:2 478:3 476:O 474:2 452:ə 449:m 446:ɛ 443:h 440:ˈ 437:, 434:t 428:t 425:ˌ 422:ə 419:m 413:h 410:ˈ 407:/ 403:( 375:δ 362:ε 359:n 355:ω 352:n 248:1 201:c 196:a 183:c 181:3 179:R 166:3 157:3 102:3 100:O 98:2 94:3 92:O 90:2 34:. 20:)

Index

Specularite
Hematite (disambiguation)

trigonal
Oxide minerals
Formula
iron(III) oxide
IMA symbol
Strunz classification
Dana classification
Crystal system
Trigonal
Crystal class
H–M symbol
Space group
Unit cell
Crystal habit
Twinning
Cleavage
Fracture
Tenacity
Mohs scale
Luster
Streak
Diaphaneity
Specific gravity
Density
Refractive index
Birefringence
Pleochroism

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