38:
257:
They contain 19–22% total iron and only 0.3–3% metallic iron. That means that most of the iron is present as iron oxide (FeO) in the silicates; olivine contains 26 to 32 mol%
381:"The Microscopic Properties of Meteorites" by Gustav Tschermak (Die Mikroskopische Beschaffenheit der Meteoriten, translated by John A. Wood and K. Mathilde Wood).
420:
1135:
1084:
451:
525:
206:). The ordinary chondrites are thought to have originated from three parent asteroids, with the fragments making up the
1152:
308:
5 and 6, meaning that their minerals are homogeneous in composition and chondrule borders are difficult to discern.
1157:
312:
107:
82:
70:
48:
28:
578:
1140:
964:
329:. We know now that LL chondrites and achondrites are quite different, so this name is no longer in use.
60:
202:, accounting for about 10–11% of observed ordinary-chondrite falls and 8–9% of all meteorite falls (see
1089:
1079:
868:
863:
564:
230:
spacecraft which landed on it and brought particles back to Earth also proved to be type LL chondrite.
1231:
1147:
573:
501:
203:
370:
NASA (YouTube) – Dr. David Kring – Asteroid
Initiative Workshop Cosmic Explorations Speakers Session
801:
569:
560:
550:
444:
1109:
858:
481:
345:
300:
The LL group includes many of the most primitive ordinary chondrites, including the well-studied
595:
1047:
1017:
824:
819:
738:
219:
144:
1057:
954:
936:
690:
369:
644:
297:
of the ordinary chondrite groups, averaging around 1 millimetre (0.039 in) diameter.
8:
959:
671:
631:
437:
535:
304:(type 3.0) chondrite. However, most LL chondrites have been thermally metamorphosed to
1052:
904:
649:
199:
75:
402:
301:
1210:
1178:
851:
811:
518:
416:
380:
836:
408:
1072:
893:
846:
783:
713:
350:
305:
168:
311:
This, together with the low content of metal, led the 19th century mineralogist
882:
791:
708:
530:
513:
486:
412:
1225:
1198:
1104:
1094:
926:
909:
756:
429:
223:
1188:
944:
831:
796:
606:
506:
1116:
1012:
996:
991:
698:
659:
654:
540:
464:
325:
262:
211:
207:
182:
136:
1031:
703:
681:
320:
160:
128:
558:
1205:
1067:
1036:
949:
771:
761:
728:
718:
587:
496:
472:
460:
316:
294:
195:
53:
37:
1173:
841:
723:
282:
278:
274:
266:
258:
227:
156:
152:
148:
140:
986:
766:
751:
746:
333:
270:
132:
1193:
491:
1183:
222:
is that of a LL chondrite meteorite. The material makeup of
315:
to determine that they formed a transitional stage between
124:
120:
16:
Group of chondrites with low iron and low metal content
1223:
135:(characteristic fayalite (Fa) 26 to 32 mol%),
459:
445:
400:
218:groups respectively. The composition of the
452:
438:
383:Smithsonian Contributions to Astrophysics,
181:LL chondrites, LL chondrite meteorites,
36:
288:
252:
1224:
433:
261:(Fa). The most abundant minerals are
13:
401:Heide, Fritz; Wlotzka, F. (1995).
385:vol. 4, p. 137–239
293:LL chondrites contain the largest
198:, the least abundant group of the
14:
1243:
404:Meteorites: messengers from space
273:. Other minerals include Fe–Ni,
394:
374:
363:
332:Many of the LL chondrites are
226:, the asteroid visited by the
1:
356:
7:
339:
42:Ragland meteorite, an LL3.4
10:
1248:
1090:extraterrestrial materials
1166:
1125:
1030:
1005:
979:
935:
881:
810:
782:
737:
689:
680:
586:
549:
471:
413:10.1007/978-3-642-57786-4
204:meteorite fall statistics
177:
167:
116:
106:
81:
69:
61:Structural classification
59:
47:
35:
26:
21:
869:Meteorites on Mars list
864:Martian meteorites list
346:Glossary of meteoritics
233:
289:Structural composition
281:or feldspathic glass,
155:or feldspathic glass,
1018:Nonmagmatic meteorite
220:Chelyabinsk meteorite
194:are a group of stony
1085:Ca–Al-rich inclusion
253:Chemical composition
407:. Springer-Verlag.
200:ordinary chondrites
285:, and phosphates.
76:Ordinary chondrite
1219:
1218:
1211:Near-Earth object
1179:Atmospheric entry
1026:
1025:
975:
974:
877:
876:
422:978-3-540-58105-5
323:and to name them
245:ow (total) iron,
188:
187:
178:Alternative names
131:(FeO) the rest),
1239:
1232:Meteorite groups
1044:Characteristics
820:Basaltic Breccia
687:
686:
584:
583:
556:
555:
454:
447:
440:
431:
430:
426:
388:
378:
372:
367:
306:petrologic types
173:Mostly 5 & 6
40:
19:
18:
1247:
1246:
1242:
1241:
1240:
1238:
1237:
1236:
1222:
1221:
1220:
1215:
1162:
1121:
1034:
1022:
1001:
971:
931:
873:
847:Orthopyroxenite
806:
778:
733:
676:
576:
568:
545:
467:
458:
423:
397:
392:
391:
379:
375:
368:
364:
359:
351:S-type asteroid
342:
291:
255:
236:
169:Petrologic type
102:
43:
17:
12:
11:
5:
1245:
1235:
1234:
1217:
1216:
1214:
1213:
1208:
1203:
1202:
1201:
1191:
1186:
1181:
1176:
1167:
1164:
1163:
1161:
1160:
1155:
1150:
1145:
1144:
1143:
1138:
1132:Meteorites by
1129:
1127:
1123:
1122:
1120:
1119:
1114:
1113:
1112:
1107:
1099:
1098:
1097:
1092:
1087:
1077:
1076:
1075:
1070:
1062:
1061:
1060:
1055:
1050:
1041:
1039:
1028:
1027:
1024:
1023:
1021:
1020:
1015:
1009:
1007:
1006:Obsolete terms
1003:
1002:
1000:
999:
994:
989:
983:
981:
977:
976:
973:
972:
970:
969:
968:
967:
962:
957:
947:
941:
939:
933:
932:
930:
929:
924:
921:
918:
915:
912:
907:
902:
899:
896:
891:
887:
885:
879:
878:
875:
874:
872:
871:
866:
861:
856:
855:
854:
844:
839:
834:
829:
828:
827:
816:
814:
808:
807:
805:
804:
799:
794:
792:Impact breccia
788:
786:
780:
779:
777:
776:
775:
774:
769:
764:
754:
749:
743:
741:
735:
734:
732:
731:
726:
721:
716:
711:
706:
701:
695:
693:
684:
678:
677:
675:
674:
669:
668:
667:
662:
657:
647:
642:
641:
640:
637:
629:
628:
627:
624:
621:
618:
615:
612:
609:
604:
601:
592:
590:
581:
553:
551:Classification
547:
546:
544:
543:
538:
533:
531:Micrometeorite
528:
523:
522:
521:
511:
510:
509:
504:
499:
494:
484:
478:
476:
469:
468:
457:
456:
449:
442:
434:
428:
427:
421:
396:
393:
390:
389:
373:
361:
360:
358:
355:
354:
353:
348:
341:
338:
290:
287:
254:
251:
235:
232:
186:
185:
179:
175:
174:
171:
165:
164:
118:
114:
113:
110:
104:
103:
101:
100:
97:
94:
91:
87:
85:
79:
78:
73:
67:
66:
63:
57:
56:
51:
45:
44:
41:
33:
32:
24:
23:
15:
9:
6:
4:
3:
2:
1244:
1233:
1230:
1229:
1227:
1212:
1209:
1207:
1204:
1200:
1197:
1196:
1195:
1192:
1190:
1187:
1185:
1182:
1180:
1177:
1175:
1172:
1169:
1168:
1165:
1159:
1158:Organizations
1156:
1154:
1151:
1149:
1146:
1142:
1139:
1137:
1136:find location
1134:
1133:
1131:
1130:
1128:
1124:
1118:
1115:
1111:
1110:Widmanstätten
1108:
1106:
1105:Neumann lines
1103:
1102:
1100:
1096:
1095:meteoric iron
1093:
1091:
1088:
1086:
1083:
1082:
1081:
1078:
1074:
1071:
1069:
1066:
1065:
1063:
1059:
1056:
1054:
1051:
1049:
1046:
1045:
1043:
1042:
1040:
1038:
1033:
1029:
1019:
1016:
1014:
1011:
1010:
1008:
1004:
998:
995:
993:
990:
988:
985:
984:
982:
978:
966:
963:
961:
960:Eagle Station
958:
956:
953:
952:
951:
948:
946:
943:
942:
940:
938:
934:
928:
925:
922:
919:
916:
913:
911:
908:
906:
903:
900:
897:
895:
892:
889:
888:
886:
884:
880:
870:
867:
865:
862:
860:
857:
853:
850:
849:
848:
845:
843:
840:
838:
835:
833:
830:
826:
823:
822:
821:
818:
817:
815:
813:
809:
803:
800:
798:
795:
793:
790:
789:
787:
785:
781:
773:
770:
768:
765:
763:
760:
759:
758:
755:
753:
750:
748:
745:
744:
742:
740:
736:
730:
727:
725:
722:
720:
717:
715:
712:
710:
707:
705:
702:
700:
697:
696:
694:
692:
688:
685:
683:
679:
673:
670:
666:
663:
661:
658:
656:
653:
652:
651:
648:
646:
643:
638:
635:
634:
633:
630:
625:
622:
619:
616:
613:
610:
608:
605:
602:
599:
598:
597:
594:
593:
591:
589:
585:
582:
580:
575:
571:
566:
562:
557:
554:
552:
548:
542:
539:
537:
534:
532:
529:
527:
524:
520:
517:
516:
515:
512:
508:
505:
503:
500:
498:
495:
493:
490:
489:
488:
485:
483:
480:
479:
477:
474:
470:
466:
462:
455:
450:
448:
443:
441:
436:
435:
432:
424:
418:
414:
410:
406:
405:
399:
398:
386:
384:
377:
371:
366:
362:
352:
349:
347:
344:
343:
337:
335:
330:
328:
327:
322:
318:
314:
309:
307:
303:
298:
296:
286:
284:
280:
276:
272:
268:
264:
260:
250:
248:
244:
240:
231:
229:
225:
221:
217:
213:
209:
205:
201:
197:
193:
192:LL chondrites
184:
180:
176:
172:
170:
166:
162:
158:
154:
150:
146:
142:
138:
134:
130:
127:(Fe) 0.3–3%,
126:
125:metallic iron
122:
119:
115:
111:
109:
105:
98:
95:
92:
89:
88:
86:
84:
80:
77:
74:
72:
68:
64:
62:
58:
55:
52:
50:
46:
39:
34:
31: —
30:
27:—
25:
20:
1189:Impact event
1170:
945:Mesosiderite
859:Shergottites
832:Chassignites
797:Mare basalts
664:
596:Carbonaceous
507:strewn field
403:
395:Bibliography
382:
376:
365:
331:
326:amphoterites
324:
310:
299:
292:
256:
246:
242:
238:
237:
216:LL chondrite
215:
191:
189:
183:Amphoterites
22:LL chondrite
1117:CI1 fossils
1013:Amphoterite
997:Octahedrite
992:Hexahedrite
699:Acapulcoite
626:C ungrouped
541:Parent body
465:meteoritics
321:achondrites
263:hypersthene
241:stands for
212:L chondrite
208:H chondrite
137:hypersthene
117:Composition
108:Parent body
1058:weathering
1032:Mineralogy
980:Structural
955:Main group
937:Stony-iron
739:Asteroidal
704:Brachinite
682:Achondrite
502:statistics
461:Meteorites
357:References
317:chondrites
295:chondrules
249:ow metal.
196:meteorites
161:phosphates
129:iron oxide
1206:Meteoroid
1171:See also:
1101:Patterns
1068:chondrule
1037:petrology
950:Pallasite
842:Nakhlites
772:Howardite
762:Diogenite
729:Winonaite
719:Lodranite
691:Primitive
645:Kakangari
632:Enstatite
588:Chondrite
497:impactite
473:Meteorite
313:Tschermak
302:Semarkona
83:Subgroups
54:Chondrite
1226:Category
1174:Asteroid
1153:Journals
1080:Minerals
1073:presolar
965:Pyroxene
852:ALH84001
825:NWA 7034
724:Ureilite
672:Rumuruti
650:Ordinary
579:grouplet
482:Glossary
340:See also
334:breccias
283:chromite
279:feldspar
275:troilite
267:pyroxene
259:fayalite
228:Hayabusa
157:chromite
153:feldspar
149:troilite
141:pyroxene
123:19–22% (
1064:Grains
987:Ataxite
812:Martian
767:Eucrite
752:Aubrite
747:Angrite
536:Notable
526:Largest
519:hunting
277:(FeS),
271:olivine
224:Itokawa
151:(FeS),
133:olivine
112:Unknown
1199:shower
1194:Meteor
1148:Awards
837:Kaidun
492:bolide
419:
269:) and
1184:Comet
1126:Lists
1048:shock
914:IIIAB
784:Lunar
714:IIICD
574:group
565:class
145:Fe–Ni
90:LL3.4
71:Class
29:Group
1141:type
1035:and
920:IIIF
917:IIIE
894:IIAB
883:Iron
802:List
577:and
570:clan
561:type
514:Find
487:Fall
463:and
417:ISBN
319:and
234:Name
214:and
190:The
121:Iron
49:Type
1053:TKW
927:IVB
923:IVA
910:IIG
905:IIE
901:IID
898:IIC
757:HED
709:IAB
559:By
475:...
409:doi
265:(a
143:),
139:(a
99:etc
96:LL6
93:LL5
1228::
890:IC
665:LL
639:EL
636:EH
623:CV
620:CR
617:CO
614:CM
611:CK
607:CI
603:CH
600:CB
572:,
563:,
415:.
336:.
239:LL
210:,
159:,
147:,
660:L
655:H
567:,
453:e
446:t
439:v
425:.
411::
387:.
247:L
243:L
163:.
65:?
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
