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Allan Hills A81005

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where many meteorites are gathered by expeditions. The large number of meteorites collected in Antarctica and the lack of geographic terms that could be used for names have led to the adaption of the "Antarctic rules" for meteorite naming. Every meteorite found in Antarctica receives the names of the
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expeditions and can be considered optional. The definition of the year is used because the year changes during the Austral summer season (December to March) and this avoids samples from one expedition having different years. This is the reason ALH A81005 has the year "81" in its name despite being
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collection area (Allan Hills) and a number. The number consists of the year the expedition started "81" and a three digit number that is given out consecutively (005). The "A" in front of the number stands for meteorites collected by
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astronauts from lunar highland areas. Evidence that ALHA 81005 is a lunar sample, was presented at the 18 March 1983 meeting of the
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ALH A81005 measures 3 × 2.5 × 3 centimetres (1.18 × 0.98 × 1.18 in). It has a dark
343:. ALH A81005 is classified as a "lunar anorthosite breccia" and belongs to the group "lunar anorthosite" (abbreviated Lun-A). 142: 1357: 1306: 673: 206:
or ALH A81005 (sometimes also named without the "A" in front of the number) was the first meteorite to be recognised as a
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was discovered in 1979 but its lunar origin was not recognised until 1984. ALH A81005 was found in 1982 in the
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that the meteorite was similar in chemical and isotopic composition to rocks returned by the
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on the outside. The interior is made up of a black to dark grey groundmass (
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The determination that ALH A81005 was of lunar origin was made by
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was very calcium-rich. The crystals are a solid solution of 97%
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Thin section analysis revealed that the crystals are mostly
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Meteorites, Ice, and Antarctica: A personal account
627:. Cambridge: Cambridge University Press. pp.  572:. Regina, Saskatchewan. March 16, 1983. p. A5 432: 430: 428: 426: 424: 422: 420: 600:. Spokane, Washington. March 16, 1983. p. A9 536: 534: 2472: 457: 455: 417: 272:) with larger grey and white angular crystals ( 681: 531: 1459: 667: 452: 234:ALH A81005 was found on 17 January 1982 by 222:, during a meteorite gathering expedition ( 1466: 1452: 674: 660: 319:have a variable composition lying between 38: 27:First lunar meteorite discovered on Earth 618: 464:"Lunar Meteorite Compendium ALH A81005" 229: 14: 2473: 1473: 612: 379:. The evidence included fabric data, 303:. Microprobe analysis showed that the 1447: 655: 24: 508: 276:). This appearance is typical for 25: 2507: 363:, following the determination by 335:is a solid solution of 11 to 40% 517:"The Lunar Meteorite Compendium" 2233:Santa Rosa de Viterbo Meteorite 33:Allan Hills A81005 (ALH A81005) 2491:Meteorites found in Antarctica 584: 556: 484: 259: 13: 1: 515:Kevin Righter; John Gruener. 462:Kevin Righter; John Gruener. 410: 377:Lunar and Planetary Institute 7: 1485:Largest meteorites on Earth 10: 2512: 1312:extraterrestrial materials 564:"Meteorite came from moon" 383:data, compositional data, 346: 256:found on 17 January 1982. 2454: 2413: 2377: 2356: 2225: 2199: 2103: 2002: 1941: 1920: 1844: 1803: 1717: 1491: 1482: 1388: 1347: 1252: 1227: 1201: 1157: 1103: 1032: 1004: 959: 911: 902: 808: 771: 693: 619:Cassidy, William (2003). 242:. It is named after the 197:31.4 grams (1.11 oz) 191: 183: 173: 136: 126: 116: 106: 94: 82: 70: 58: 46: 37: 32: 2496:Transantarctic Mountains 220:Transantarctic Mountains 2238:Santa Vitoria do Palmar 1887:Heat Shield Rock (Mars) 1091:Meteorites on Mars list 1086:Martian meteorites list 365:Smithsonian Institution 2010:Mackinac Island (Mars) 544:. Meteoritical Society 440:. Meteoritical Society 246:, a mountain chain in 158:76.83028°S 158.25889°E 2481:Achondrite meteorites 2253:Shelter Island (Mars) 2085:Northwest Africa 7325 2080:Northwest Africa 7034 2075:Northwest Africa 3009 1240:Nonmagmatic meteorite 361:University of Chicago 359:, researchers at the 2111:Oileán Ruaidh (Mars) 1307:Ca–Al-rich inclusion 438:"Allan Hills A81005" 339:with the rest being 230:Discovery and naming 163:-76.83028; 158.25889 2243:Sayh al Uhaymir 169 1882:Hadley Rille (Moon) 1679:Block Island (Mars) 1659:Bench Crater (Moon) 397:magnetic properties 154: /  1549:Allan Hills A81005 405:thermoluminescence 395:exposure history, 369:Brian Harold Mason 218:at the end of the 204:Allan Hills A81005 2468: 2467: 1554:Allan Hills 84001 1544:Allan Hills 77005 1441: 1440: 1433:Near-Earth object 1401:Atmospheric entry 1248: 1247: 1197: 1196: 1099: 1098: 597:Spokane Chronicle 542:"Antarctic Rules" 201: 200: 77:Lunar anorthosite 16:(Redirected from 2503: 2486:Lunar meteorites 1468: 1461: 1454: 1445: 1444: 1266:Characteristics 1042:Basaltic Breccia 909: 908: 806: 805: 778: 777: 676: 669: 662: 653: 652: 643: 642: 626: 616: 610: 609: 607: 605: 588: 582: 581: 579: 577: 560: 554: 553: 551: 549: 538: 529: 528: 526: 524: 512: 506: 505: 503: 502: 488: 482: 481: 479: 477: 468: 459: 450: 449: 447: 445: 434: 401:nuclear particle 210:. The meteorite 169: 168: 166: 165: 164: 159: 155: 152: 151: 150: 147: 108:Weathering grade 42: 30: 29: 21: 2511: 2510: 2506: 2505: 2504: 2502: 2501: 2500: 2471: 2470: 2469: 2464: 2450: 2409: 2373: 2352: 2221: 2195: 2099: 1998: 1937: 1916: 1840: 1799: 1725:Campo del Cielo 1713: 1487: 1478: 1472: 1442: 1437: 1384: 1343: 1256: 1244: 1223: 1193: 1153: 1095: 1069:Orthopyroxenite 1028: 1000: 955: 898: 798: 790: 767: 689: 680: 649: 647: 646: 639: 617: 613: 603: 601: 590: 589: 585: 575: 573: 569:The Leader-Post 562: 561: 557: 547: 545: 540: 539: 532: 522: 520: 513: 509: 500: 498: 496:sites.wustl.edu 490: 489: 485: 475: 473: 466: 460: 453: 443: 441: 436: 435: 418: 413: 349: 262: 232: 208:lunar meteorite 187:17 January 1982 162: 160: 156: 153: 148: 145: 143: 141: 140: 65:Lunar meteorite 28: 23: 22: 15: 12: 11: 5: 2509: 2499: 2498: 2493: 2488: 2483: 2466: 2465: 2463: 2462: 2460:Meteorite fall 2455: 2452: 2451: 2449: 2448: 2443: 2438: 2433: 2428: 2423: 2417: 2415: 2411: 2410: 2408: 2407: 2402: 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2263:Sikhote-Alin 2035:Monte Milone 1699:Braunschweig 1548: 1411:Impact event 1392: 1167:Mesosiderite 1081:Shergottites 1054:Chassignites 1019:Mare basalts 818:Carbonaceous 729:strewn field 648: 622: 614: 602:. 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Retrieved 403:tracks, and 350: 329:wollastonite 287:, with some 282: 266:fusion crust 263: 240:Ian Whillans 233: 203: 202: 2308:Tagish Lake 2273:Springwater 2171:Peace River 2161:Park Forest 2045:Mundrabilla 1974:Krasnojarsk 1892:High Possil 1862:Gebel Kamil 1755:Chelyabinsk 1634:Avanhandava 1519:Adzhi-Bogdo 1509:Adelie Land 1339:CI1 fossils 1235:Amphoterite 1219:Octahedrite 1214:Hexahedrite 921:Acapulcoite 848:C ungrouped 763:Parent body 687:meteoritics 631:-185, 320. 604:27 February 576:27 February 548:26 February 325:ferrosilite 305:plagioclase 285:plagioclase 260:Description 244:Allan Hills 236:John Schutt 216:Allan Hills 161: / 149:158°15′32″E 137:Coordinates 131:Allan Hills 100:plagioclase 95:Composition 84:Parent body 2475:Categories 2421:Yamato 691 2395:Winchcombe 2390:Willamette 2369:Vermillion 2328:Tlacotepec 2288:Strathmore 2212:Richardton 2151:Pallasovka 1872:Goose Lake 1852:Gao–Guenie 1785:Cranbourne 1770:Chinguetti 1674:Blithfield 1609:Arbol Solo 1475:Meteorites 1280:weathering 1254:Mineralogy 1202:Structural 1177:Main group 1159:Stony-iron 961:Asteroidal 926:Brachinite 904:Achondrite 724:statistics 683:Meteorites 523:11 January 501:2024-08-04 476:11 January 444:11 January 411:References 393:cosmic ray 367:scientist 341:forsterite 248:Antarctica 184:Found date 146:76°49′49″S 121:Antarctica 53:Achondrite 2446:Zaklodzie 2348:Twannberg 2303:Sylacauga 2278:St-Robert 2258:Shergotty 2181:Penouille 2176:Peekskill 2156:Paragould 2121:Oldenburg 2116:Old Woman 2055:Murchison 1984:Lac Dodon 1907:Hraschina 1902:Homestead 1857:Gay Gulch 1826:Ensisheim 1790:D'Orbigny 1750:Chassigny 1735:Cape York 1669:Białystok 1654:Bellsbank 1644:Beardsley 1639:Baszkówka 1428:Meteoroid 1393:See also: 1323:Patterns 1290:chondrule 1259:petrology 1172:Pallasite 1064:Nakhlites 994:Howardite 984:Diogenite 951:Winonaite 941:Lodranite 913:Primitive 867:Kakangari 854:Enstatite 810:Chondrite 719:impactite 695:Meteorite 389:noble gas 321:enstatite 317:pyroxenes 309:anorthite 18:ALH 81005 2431:Yardymly 2313:Tamdakht 2293:Sulagiri 2283:Stannern 2268:Sołtmany 2248:Seymchan 2166:Pavlovka 1969:Khatyrka 1959:Karoonda 1912:Huckitta 1780:Coahuila 1760:Chergach 1745:Chambord 1740:Carancas 1689:Brachina 1599:Annaheim 1534:Albareto 1529:Akbarpur 1514:Adhi Kot 1396:Asteroid 1375:Journals 1302:Minerals 1295:presolar 1187:Pyroxene 1074:ALH84001 1047:NWA 7034 946:Ureilite 894:Rumuruti 872:Ordinary 801:grouplet 704:Glossary 337:fayalite 289:pyroxene 278:breccias 2323:Tissint 2217:Renazzo 2191:Pultusk 2186:Příbram 2146:Ourique 2131:Orgueil 1979:L'Aigle 1954:Kainsaz 1821:Elbogen 1795:Dronino 1775:Claxton 1704:Brenham 1649:Bendegó 1589:Ankober 1564:Allende 1559:Allegan 1477:by name 1286:Grains 1209:Ataxite 1034:Martian 989:Eucrite 974:Aubrite 969:Angrite 758:Notable 748:Largest 741:hunting 347:History 333:olivine 311:and 3% 293:olivine 117:Country 102:clasts. 2458:List: 2441:Zaisho 2436:Zagami 2400:Winona 2385:Weston 2343:Tsarev 2338:Treysa 2333:Toluca 2318:Tenham 2207:Qidong 2136:Ornans 2126:Omolon 2095:Novato 2065:Nantan 2060:Nakhla 1994:Łowicz 1989:Loreto 1949:Kaidun 1928:Imilac 1867:Gibeon 1836:Fukang 1831:Esquel 1816:El Ali 1765:Chinga 1694:Brahin 1684:Bovedy 1664:Benton 1624:Assisi 1614:Archie 1594:Anlong 1579:Angers 1574:Andura 1539:Aletai 1499:Aarhus 1421:shower 1416:Meteor 1370:Awards 1059:Kaidun 714:bolide 635:  519:. NASA 407:data. 391:data, 387:data, 331:. The 315:. The 313:albite 301:basalt 297:gabbro 274:clasts 270:matrix 253:ANSMET 224:ANSMET 127:Region 2141:Osseo 2030:Mineo 2015:Mbosi 1964:Kesen 1933:Itqiy 1877:Grant 1629:Atoka 1406:Comet 1348:Lists 1270:shock 1136:IIIAB 1006:Lunar 936:IIICD 796:group 787:class 467:(PDF) 72:Group 2040:Moss 1897:Hoba 1524:Agen 1504:Abee 1363:type 1257:and 1142:IIIF 1139:IIIE 1116:IIAB 1105:Iron 1024:List 799:and 792:clan 783:type 736:Find 709:Fall 685:and 633:ISBN 606:2013 578:2013 550:2013 525:2013 478:2013 471:NASA 446:2013 355:and 327:and 291:and 238:and 89:Moon 60:Clan 48:Type 2414:Y–Z 2378:W–X 2357:U–V 2226:S–T 2200:Q–R 2104:O–P 2003:M–N 1942:K–L 1921:I–J 1845:G–H 1804:E–F 1718:C–D 1492:A–B 1275:TKW 1149:IVB 1145:IVA 1132:IIG 1127:IIE 1123:IID 1120:IIC 979:HED 931:IAB 781:By 697:... 629:144 299:or 226:). 193:TKW 112:A/B 2477:: 1112:IC 887:LL 861:EL 858:EH 845:CV 842:CR 839:CO 836:CM 833:CK 829:CI 825:CH 822:CB 794:, 785:, 594:. 566:. 533:^ 494:. 469:. 454:^ 419:^ 399:, 323:, 179:No 1467:e 1460:t 1453:v 882:L 877:H 789:, 675:e 668:t 661:v 641:. 608:. 580:. 552:. 527:. 504:. 480:. 448:. 20:)

Index

ALH 81005

Type
Achondrite
Clan
Lunar meteorite
Group
Lunar anorthosite
Parent body
Moon
plagioclase
Weathering grade
Antarctica
Allan Hills
76°49′49″S 158°15′32″E / 76.83028°S 158.25889°E / -76.83028; 158.25889
Observed fall
TKW
lunar meteorite
Yamato 791197
Allan Hills
Transantarctic Mountains
ANSMET
John Schutt
Ian Whillans
Allan Hills
Antarctica
ANSMET
fusion crust
matrix
clasts

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