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Ordinary chondrite NWA 3189 sliced. Field of view c. 2.2 cm across. NWA 3189 has been classified as an LL3.2–3.4 ordinary chondrite ("LL" means very low total iron content; "3" refers to well-preserved chondrules – the rock has not been subjected to metamorphism intense enough to disrupt the
180:
It is likely that the ordinary chondrites comprise a detailed sample of but a few select asteroids which happen to have been in the right place at the right time to send many fragments toward Earth at the present moment in solar system history. On the other hand, observations of
126:. They are by far the most numerous group, comprising 87% of all finds. Hence, they have been dubbed "ordinary". The ordinary chondrites are thought to have originated from three parent asteroids, with the fragments making up the
185:
by the
Galileo spacecraft found weathering of Ida's surface, and the reflection spectra of freshly exposed parts of the surface resembled that of OC meteorites, while the older regions matched the spectra of common
198:
The ordinary chondrites comprise three mineralogically and chemically distinct groupings. They differ in the amount of total iron, of iron metal and iron oxide in the silicates:
150:
parent bodies, but rather of a select few which are advantageously placed to send impact fragments to Earth-crossing orbits. Such positions are e.g. near
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325:"Asteroid 6 Hebe: The probable parent body of the H-Type ordinary chondrites and the IIE iron meteorites"
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chondritic texture). This chondrite has a multicolored mix of chondrules of varying size and shape.
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Ochansk
Meteorite, an ordinary chondrite with a fusion crust, found in 1887 in Russia.
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ower total iron, lower metal, but higher iron oxide (Fa) in the silicates
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ighest total iron, high metal, but lower iron oxide (Fa) in the silicates
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has been identified to have a spectrum close to the ordinary chondrites.
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ow metal, but the highest iron oxide content (Fa) in the silicates
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Asteroid
Initiative Workshop Cosmic Explorations Speakers Session
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367:"Classification – Stony Meteorites – Ordinary tauch.Chondrites"
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It is suspected that they are not representative of typical
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by James St. John, a geologist at Ohio State
University
162:. In fact, only the one rather insignificant asteroid
173:(comprising about 46% of the ordinary chondrites) is
313:". NASA (via YouTube). Retrieved 16 February 2019.
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323:Gaffey, M. J.; Gilbert, S. L. (1998).
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330:Meteoritics & Planetary Science
13:
400:A Pictorial of Ordinary Chondrites
352:10.1111/j.1945-5100.1998.tb01312.x
269:
14:
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388:
309:David Kring (21 November 2013). "
406:Gallery of Ordinary Chondrites
359:
303:
169:A probable parent body of the
1:
262:
7:
395:The Catalogue of Meteorites
282:The Catalogue of Meteorites
240:
10:
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1072:extraterrestrial materials
284:. Natural History Museum.
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16:Class of stony meteorites
851:Meteorites on Mars list
846:Martian meteorites list
343:1998M&PS...33.1281G
247:Glossary of meteoritics
119:) are a class of stony
402:- Meteorites Australia
276:Grady, Monica (2022).
115:(sometimes called the
108:
100:
1000:Nonmagmatic meteorite
138:groups respectively.
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97:
1067:Ca–Al-rich inclusion
194:Chemical composition
113:ordinary chondrites
42:Ordinary chondrite
232:ow total iron and
160:main asteroid belt
156:secular resonances
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101:
52:Compositional type
22:Ordinary chondrite
1214:Meteorite classes
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1193:Near-Earth object
1161:Atmospheric entry
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85:Alternative names
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1026:Characteristics
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337:(6): 1281–1295.
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188:S-type asteroids
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27:—
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1171:Impact event
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927:Mesosiderite
841:Shergottites
814:Chassignites
779:Mare basalts
631:
578:Carbonaceous
489:strewn field
374:. Retrieved
370:
361:
334:
328:
318:
305:
293:. Retrieved
281:
278:"Meteorites"
271:
233:
229:
218:
215:L chondrites
207:
204:H chondrites
197:
179:
171:H chondrites
168:
145:
136:LL chondrite
117:O chondrites
116:
112:
110:
88:O chondrites
43:
1099:CI1 fossils
995:Amphoterite
979:Octahedrite
974:Hexahedrite
681:Acapulcoite
608:C ungrouped
523:Parent body
447:meteoritics
132:L chondrite
128:H chondrite
76:Parent body
1040:weathering
1014:Mineralogy
962:Structural
937:Main group
919:Stony-iron
721:Asteroidal
686:Brachinite
664:Achondrite
484:statistics
443:Meteorites
263:References
124:meteorites
121:chondritic
1188:Meteoroid
1153:See also:
1083:Patterns
1050:chondrule
1019:petrology
932:Pallasite
824:Nakhlites
754:Howardite
744:Diogenite
711:Winonaite
701:Lodranite
673:Primitive
627:Kakangari
614:Enstatite
570:Chondrite
479:impactite
455:Meteorite
376:10 August
257:Chondrule
252:Chondrite
206:have the
69:Chondrite
1208:Category
1156:Asteroid
1135:Journals
1062:Minerals
1055:presolar
947:Pyroxene
834:ALH84001
807:NWA 7034
706:Ureilite
654:Rumuruti
632:Ordinary
561:grouplet
464:Glossary
241:See also
148:asteroid
1046:Grains
969:Ataxite
794:Martian
749:Eucrite
734:Aubrite
729:Angrite
518:Notable
508:Largest
501:hunting
339:Bibcode
183:243 Ida
158:in the
154:and/or
80:unknown
44:NWA 869
1181:shower
1176:Meteor
1130:Awards
819:Kaidun
474:bolide
295:28 May
175:6 Hebe
142:Origin
1166:Comet
1108:Lists
1030:shock
896:IIIAB
766:Lunar
696:IIICD
556:group
547:class
228:have
217:have
57:Stony
29:Class
1123:type
1017:and
902:IIIF
899:IIIE
876:IIAB
865:Iron
784:List
559:and
552:clan
543:type
496:Find
469:Fall
445:and
378:2017
297:2020
224:The
213:The
202:The
134:and
111:The
64:Type
1035:TKW
909:IVB
905:IVA
892:IIG
887:IIE
883:IID
880:IIC
739:HED
691:IAB
541:By
457:...
347:doi
286:doi
1210::
872:IC
647:LL
621:EL
618:EH
605:CV
602:CR
599:CO
596:CM
593:CK
589:CI
585:CH
582:CB
554:,
545:,
369:.
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335:33
333:.
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130:,
642:L
637:H
549:,
435:e
428:t
421:v
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349::
341::
299:.
288::
234:L
230:L
219:L
208:H
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
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