Table 1. Newly Classified Antarctic Meteorites
Sample Number | Weight (g) | Classification | Weathering |
Fracturing |
%Fa |
%Fs |
|
---|---|---|---|---|---|---|---|
PAT 10203 | 538.4 | L5 CHONDRITE | B/C | B | 26 | ||
PAT 10311 | 7.7 | LL6 CHONDRITE | B/C | A/B | 30 | ||
GDR 12540 | 254.9 | L5 CHONDRITE | A | A | 26 | ||
GDR 12541 | 97.0 | L5 CHONDRITE | A | A | 26 | ||
GRA 12502 | 30.0 | H6 CHONDRITE | B | A | 18 | ||
GRA 12503 | 47.9 | H6 CHONDRITE | B | A | 18 | ||
GRA 12504 | 80.8 | H5 CHONDRITE | B | A | 18 | ||
GRA 12505 | 153.6 | H6 CHONDRITE | B/C | A | 20 | ||
GRA 12506 | 36.8 | H5 CHONDRITE | B | A | 18 | ||
GRA 12507 | 21.8 | H5 CHONDRITE | B/C | A | 19 | ||
GRA 12508 | 25.9 | H5 CHONDRITE | B | A | 18 | ||
GRA 12509 | 7.0 | H5 CHONDRITE | A/B | A/B | 20 | ||
GRO 12520 | 154.9 | H5 CHONDRITE | B | A/B | 19 | ||
GRO 12521 | 8.7 | H5 CHONDRITE | A | A | 19 | ||
GRO 12522 | 11.1 | H6 CHONDRITE | A/B | A | 20 | ||
GRO 12523 | 23.9 | H5 CHONDRITE | A/B | A/B | 19 | ||
GRO 12524 | 11.4 | L6 CHONDRITE | A | A | 26 | ||
LAR 12001 | 6328.2 | EH3 CHONDRITE | BE | B/C | 3 | 0-2 | |
LAR 12003 | 2600.1 | H6 CHONDRITE | A/B | A/B | 19 | ||
LAR 12004 | 4016.3 | L6 CHONDRITE | A/B | A | 25 | ||
LAR 12005 | 1199.5 | L6 CHONDRITE | A/BE | A/B | 25 | ||
LAR 12006 | 1532.9 | H5 CHONDRITE | B | B | 19 | ||
LAR 12007 | 1618.3 | H6 CHONDRITE | BE | A | 19 | ||
LAR 12008 | 1119.5 | H6 CHONDRITE | BE | A/B | 19 | ||
LAR 12009 | 1002.9 | H6 CHONDRITE | B | A/B | 19 | ||
LAR 12013 | 972.9 | H5 CHONDRITE | BE | A/B | 20 | ||
LAR 12014 | 2121.0 | H5 CHONDRITE | B/C | A | 20 | ||
LAR 12015 | 1646.9 | H6 CHONDRITE | BE | A | 19 | ||
LAR 12016 | 4535.5 | H6 CHONDRITE | BE | A/B | 20 | ||
LAR 12017 | 1053.5 | L6 CHONDRITE | A/B | A/B | 26 | ||
LAR 12018 | 906.2 | H6 CHONDRITE | B | A/B | 20 | ||
LAR 12019 | 2488.9 | H6 CHONDRITE | B | A | 19 | ||
LAR 12020 | 984.7 | H6 CHONDRITE | BE | B | 20 | ||
LAR 12021 | 926.2 | H6 CHONDRITE | B | B | 20 | ||
LAR 12022 | 1710.1 | H5 CHONDRITE | B | A | 20 | ||
LAR 12023 | 967.7 | H6 CHONDRITE | BE | A | 17 | ||
LAR 12024 | 848.7 | L5 CHONDRITE | B | A/B | 20 | ||
LAR 12025 | 661.3 | H5 CHONDRITE | B | A/B | 19 | ||
LAR 12026 | 930.5 | H6 CHONDRITE | B | B | 20 | ||
LAR 12027 | 1139.7 | H6 CHONDRITE | A/BE | A/B | 19 | ||
LAR 12028 | 1297.7 | H5 CHONDRITE | BE | A/B | 19 | ||
LAR 12030 | 931.8 | H6 CHONDRITE | A/B | B | 20 | ||
LAR 12031 | 1807.5 | H6 CHONDRITE | B | B | 19 | ||
LAR 12032 | 1068.0 | H6 CHONDRITE | B | B | 20 | ||
LAR 12033 | 2585.7 | H5 CHONDRITE | B | B | 20 | ||
LAR 12035 | 258.4 | L5 CHONDRITE | A/B | A/B | 25 | ||
LAR 12036 | 522.9 | LL6 CHONDRITE | A/B | A | 26 | ||
LAR 12037 | 620.9 | LL6 CHONDRITE | B/C | B | 26 | ||
LAR 12038 | 260.5 | H6 CHONDRITE | B | A/B | 20 | ||
LAR 12039 | 270.4 | H5 CHONDRITE | B | A/B | 20 | ||
LAR 12040 | 137.4 | H6 CHONDRITE | A/BE | A/B | 20 | ||
LAR 12041 | 176.8 | H6 CHONDRITE | B | A | 20 | ||
LAR 12042 | 381.1 | H6 CHONDRITE | B | A | 20 | ||
LAR 12043 | 524.1 | H5 CHONDRITE | BE | A/B | 18 | 16 | |
LAR 12050 | 27.9 | H5 CHONDRITE | A/B | A | 19 | ||
LAR 12051 | 40.8 | H5 CHONDRITE | B/C | A | 20 | ||
LAR 12052 | 89.9 | L6 CHONDRITE | B | A/B | 26 | ||
LAR 12053 | 100.8 | L6 CHONDRITE | B/C | A | 23 | ||
LAR 12054 | 56.4 | L6 CHONDRITE | B/C | A/B | 26 | ||
LAR 12055 | 114.4 | H6 CHONDRITE | B/C | A | 19 | ||
LAR 12057 | 61.1 | H5 CHONDRITE | B/C | A | 19 | ||
LAR 12058 | 77.2 | H6 CHONDRITE | B/C | A | 19 | ||
LAR 12061 | 109.7 | H6 CHONDRITE | B/C | B/C | 19 | ||
LAR 12062 | 663.8 | H5 CHONDRITE | BE | A/B | 20 | ||
LAR 12063 | 109.1 | H5 CHONDRITE | B/C | A/B | 19 | ||
LAR 12064 | 70.2 | L5 CHONDRITE | A/B | B/C | 26 | ||
LAR 12065 | 24.5 | H5 CHONDRITE | B | B | 19 | ||
LAR 12066 | 29.8 | L5 CHONDRITE | A | B/C | 25 | ||
LAR 12067 | 51.3 | H6 CHONDRITE | B | A/B | 19 | ||
LAR 12068 | 72.7 | L5 CHONDRITE | BE | B | 25 | 21 | |
LAR 12069 | 33.7 | H5 CHONDRITE | B/C | B/C | 19 | ||
LAR 12070 | 20.2 | H6 CHONDRITE | B | A/B | 19 | ||
LAR 12071 | 34.3 | H6 CHONDRITE | B | A/B | 19 | ||
LAR 12072 | 27.8 | H6 CHONDRITE | B | A/B | 20 | ||
LAR 12073 | 25.9 | H6 CHONDRITE | B | A | 20 | ||
LAR 12074 | 15.6 | H6 CHONDRITE | A/B | A | 19 | ||
LAR 12076 | 20.8 | H6 CHONDRITE | B | A | 19 | ||
LAR 12077 | 30.7 | H5 CHONDRITE | B/C | A/B | 19 | ||
LAR 12079 | 45.8 | H6 CHONDRITE | A/B | A | 21 | ||
LAR 12080 | 39.8 | H6 CHONDRITE | B | A | 20 | ||
LAR 12081 | 35.4 | H5 CHONDRITE | B | A | 21 | ||
LAR 12083 | 8.4 | H6 CHONDRITE | B | A | 20 | ||
LAR 12084 | 53.1 | H6 CHONDRITE | B | A | 21 | ||
LAR 12085 | 30.2 | H6 CHONDRITE | B | A/B | 19 | ||
LAR 12086 | 14.2 | H6 CHONDRITE | A/B | A | 20 | ||
LAR 12087 | 22.0 | H5 CHONDRITE | A/B | A/B | 20 | ||
LAR 12088 | 21.9 | H6 CHONDRITE | A/B | A/B | 20 | ||
LAR 12089 | 6.7 | H6 CHONDRITE | A/B | A | 19 | ||
LAR 12090 | 251.9 | L3.8 CHONDRITE | B/CE | A/B | 20-31 | ||
LAR 12091 | 543.6 | H4 CHONDRITE | B/CE | A | 19 | 17 | |
LAR 12092 | 171.8 | H6 CHONDRITE | B/CE | A/B | 19 | ||
LAR 12093 | 97.1 | L5 CHONDRITE | B/CE | B | 25 | 21 | |
LAR 12094 | 97.3 | H6 CHONDRITE | B/CE | A/B | 19 | ||
LAR 12096 | 160.1 | L5 CHONDRITE | AE | A/B | 26 | ||
LAR 12097 | 194.7 | H5 CHONDRITE | A/B | A | 20 | ||
LAR 12098 | 375.7 | L6 CHONDRITE | A/B | A/B | 24 | 20 | |
LAR 12106 | 41.7 | UREILITE | AE | A/B | 3-17 | 6-10 | |
LAR 12111 | 5.2 | L6 CHONDRITE | B | B | 26 | ||
LAR 12112 | 5.2 | H6 CHONDRITE | A/B | B | 20 | ||
LAR 12113 | 9.7 | L6 CHONDRITE | A/B | A | 26 | ||
LAR 12114 | 8.7 | H6 CHONDRITE | B/C | A/B | 20 | ||
LAR 12115 | 11.3 | H6 CHONDRITE | B/C | A | 20 | ||
LAR 12116 | 5.6 | LL6 CHONDRITE | B | A/B | 29 | ||
LAR 12118 | 18.9 | H6 CHONDRITE | B | B/C | 20 | ||
LAR 12119 | 15.8 | H6 CHONDRITE | B | A/B | 20 | ||
LAR 12120 | 724.4 | L6 CHONDRITE | A/B | A | 26 | ||
LAR 12121 | 347.1 | H6 CHONDRITE | B/CE | A/B | 20 | ||
LAR 12122 | 428.0 | H6 CHONDRITE | B/C | A | 20 | ||
LAR 12123 | 376.6 | H5 CHONDRITE | A/BE | A/B | 18 | ||
LAR 12124 | 214.1 | LL5 CHONDRITE | BE | A/B | 28 | 25 | |
LAR 12125 | 578.9 | H6 CHONDRITE | B/CE | A | 19 | ||
LAR 12126 | 190.8 | H5 CHONDRITE | B/CE | A/B | 19 | ||
LAR 12128 | 222.3 | EH3 CHONDRITE | C | B/C | 0.4 | 1 | |
LAR 12129 | 373.1 | L6 CHONDRITE | A/B | A | 26 | ||
LAR 12141 | 57.1 | H6 CHONDRITE | A/B | A | 20 | ||
LAR 12142 | 68.4 | L3.6 CHONDRITE | AE | A | 2-40 | 26 | |
LAR 12143 | 51.2 | H6 CHONDRITE | A/BE | A/B | 20 | ||
LAR 12144 | 83.0 | L6 CHONDRITE | BE | A | 26 | ||
LAR 12145 | 102.1 | H6 CHONDRITE | BE | A | 20 | ||
LAR 12146 | 98.4 | L6 CHONDRITE | BE | A/B | 26 | ||
LAR 12147 | 103.0 | LL6 CHONDRITE | B | A | 27 | ||
LAR 12148 | 80.0 | H6 CHONDRITE | BE | A | 19 | ||
LAR 12149 | 89.7 | L6 CHONDRITE | A/BE | B | 25 | ||
LAR 12160 | 77.8 | H6 CHONDRITE | B/CE | A/B | 20 | ||
LAR 12161 | 43.5 | H6 CHONDRITE | B/CE | A/B | 20 | ||
LAR 12162 | 43.6 | H6 CHONDRITE | B/CE | A/B | 20 | ||
LAR 12165 | 28.2 | H6 CHONDRITE | B/C | A/B | 20 | ||
LAR 12166 | 30.3 | H6 CHONDRITE | B/C | A | 20 | ||
LAR 12167 | 18.1 | H6 CHONDRITE | B/C | A | 20 | ||
LAR 12168 | 43.8 | H5 CHONDRITE | B/C | A | 20 | ||
LAR 12170 | 20.0 | H6 CHONDRITE | B | A/B | 19 | ||
LAR 12171 | 16.5 | H6 CHONDRITE | B | A/B | 20 | ||
LAR 12172 | 17.6 | H6 CHONDRITE | B | A | 20 | ||
LAR 12173 | 24.3 | H6 CHONDRITE | B | A | 20 | ||
LAR 12174 | 9.0 | H6 CHONDRITE | B | B | 18 | ||
LAR 12175 | 15.0 | H6 CHONDRITE | B | A | 19 | ||
LAR 12177 | 9.9 | H6 CHONDRITE | A/B | A | 20 | ||
LAR 12178 | 5.7 | L6 CHONDRITE | A/B | A | 26 | ||
LAR 12179 | 15.3 | L6 CHONDRITE | B/C | A/B | 26 | ||
LAR 12181 | 25.3 | H5 CHONDRITE | B/C | A | 19 | ||
LAR 12183 | 6.2 | L6 CHONDRITE | B/C | A | 26 | ||
LAR 12184 | 6.5 | H6 CHONDRITE | B/C | A | 20 | ||
LAR 12185 | 4.4 | H6 CHONDRITE | B/C | A | 20 | ||
LAR 12186 | 11.5 | H6 CHONDRITE | B/C | A | 20 | ||
LAR 12187 | 11.9 | H6 CHONDRITE | B/C | A | 20 | ||
LAR 12188 | 5.0 | H5 CHONDRITE | B/C | A | 21 | ||
LAR 12195 | 16.1 | L4 CHONDRITE | A/B | A | 23 | ||
LAR 12200 | 3.5 | H6 CHONDRITE | B | A | 19 | ||
LAR 12201 | 12.5 | H6 CHONDRITE | B/C | A | 21 | ||
LAR 12202 | 13.3 | H5 CHONDRITE | B/C | A/B | 19 | ||
LAR 12206 | 9.2 | L6 CHONDRITE | B | A | 26 | ||
LAR 12207 | 8.0 | H6 CHONDRITE | B/C | A | 19 | ||
LAR 12208 | 10.3 | H6 CHONDRITE | B/C | A | 20 | ||
LAR 12209 | 2.8 | LL5 CHONDRITE | B/C | A | 27 | ||
LAR 12210 | 26.4 | H5 CHONDRITE | B/C | A/B | 16 | ||
LAR 12211 | 20.6 | H5 CHONDRITE | B/C | A/B | 20 | ||
LAR 12212 | 27.5 | L5 CHONDRITE | B/C | A/B | 26 | ||
LAR 12213 | 39.4 | H6 CHONDRITE | B/C | A/B | 19 | ||
LAR 12214 | 8.4 | L6 CHONDRITE | C | A | 26 | ||
LAR 12216 | 16.3 | L3.5 CHONDRITE | B | A | 3-33 | 13-18 | |
LAR 12217 | 13.6 | H6 CHONDRITE | B | B | 20 | ||
LAR 12218 | 24.6 | H6 CHONDRITE | B | A | 19 | ||
LAR 12219 | 17.6 | H6 CHONDRITE | B | A | 19 | ||
LAR 12220 | 467.5 | H5 CHONDRITE | B | A/B | 20 | ||
LAR 12230 | 40.7 | L5 CHONDRITE | A/B | A/B | 25 | ||
LAR 12231 | 21.8 | H5 CHONDRITE | A/BE | B | 19 | ||
LAR 12232 | 43.2 | H6 CHONDRITE | B | A/B | 19 | ||
LAR 12233 | 60.3 | L5 CHONDRITE | B | A | 25 | ||
LAR 12234 | 35.6 | L3.6 CHONDRITE | A/B | A/B | 1-25 | 4 | |
LAR 12235 | 33.9 | L6 CHONDRITE | B/C | A | 26 | ||
LAR 12236 | 33.9 | H6 CHONDRITE | B | A | 19 | ||
LAR 12237 | 24.2 | H6 CHONDRITE | A/B | A | 19 | ||
LAR 12239 | 24.6 | L5 CHONDRITE | AE | A/B | 25 | ||
LAR 12300 | 14.0 | LL5 CHONDRITE | B/C | A | 28 | ||
LAR 12321 | 39.0 | L5 CHONDRITE | A/B | B | 26 | ||
LAR 12324 | 258.3 | L5 CHONDRITE | A/B | A | 26 | ||
SCO 12531 | 132.3 | L6 CHONDRITE | A/B | A/B | 26 | ||
SCO 12532 | 48.5 | H5 CHONDRITE | A | A | 20 | ||
SCO 12533 | 11.1 | L5 CHONDRITE | B | B/C | 26 | ||
SCO 12534 | 18.1 | L5 CHONDRITE | A/B | A/B | 26 | ||
SZA 12405 | 1181.4 | H5 CHONDRITE | A/B | A/B | 19 | ||
SZA 12440 | 33.9 | H5 CHONDRITE | B/C | A/B | 20 | ||
SZA 12442 | 3.9 | H5 CHONDRITE | B/C | A/B | 20 | ||
SZA 12443 | 22.0 | L5 CHONDRITE | B/C | B | 26 | ||
MIL 13001 | 5596.9 | L5 CHONDRITE | BE | A | 26 | ||
MIL 13003 | 1038.1 | H5 CHONDRITE | B | A/B | 20 | ||
MIL 13006 | 627.4 | L6 CHONDRITE | B/C | A/B | 26 | ||
MIL 13007 | 436.1 | H4 CHONDRITE | BE | B | 18 | ||
MIL 13050 | 0.4 | LL4 CHONDRITE | B | A | 28 | 24 | |
MIL 13051 | 29.0 | H5 CHONDRITE | B/C | A | 19 | ||
MIL 13052 | 2.2 | L3.6 CHONDRITE | B | A | 1-27 | 9-15 | |
MIL 13053 | 0.4 | L6 CHONDRITE | B | A | 26 | ||
MIL 13054 | 6.7 | H5 CHONDRITE | B/C | A | 20 | ||
MIL 13055 | 0.9 | H6 CHONDRITE | B | A | 20 | ||
MIL 13057 | 3.1 | LL5 CHONDRITE | B/C | A/B | 27 | ||
MIL 13058 | 1.9 | L6 CHONDRITE | B/C | A | 26 | ||
MIL 13280 | 1.8 | LL6 CHONDRITE | B/C | A | 27 | ||
MIL 13281 | 0.5 | H6 CHONDRITE | B | A | 19 | ||
MIL 13282 | 1.0 | LL4 CHONDRITE | A/B | A | 28 | 24 | |
MIL 13283 | 0.5 | H5 CHONDRITE | B | A/B | 19 | ||
MIL 13284 | 1.1 | L5 CHONDRITE | B/C | A | 26 | ||
MIL 13285 | 1.0 | EH3 CHONDRITE | B/C | B | 0-3 | ||
MIL 13286 | 0.2 | H6 CHONDRITE | B | A | 20 | ||
MIL 13287 | 0.2 | LL5 CHONDRITE | B | A | 27 | ||
MIL 13288 | 2.0 | LL5 CHONDRITE | B/C | A | 29 | ||
MIL 13289 | 1.2 | L5 CHONDRITE | B/C | A | 26 | ||
DOM 14003 | 1261.2 | L3.6 CHONDRITE | BE | A/B | 9-27 | 4-14 | |
DOM 14019 | 158.3 | CO3 CHONDRITE | BE | A/B | 1-39 | 2 | |
DOM 14127 | 103.9 | CO3 CHONDRITE | B | B | 22-42 | 1 | |
DOM 14169 | 20.0 | HOWARDITE | AE | B | 22-62 | ||
DOM 14219 | 38.1 | CM2 CHONDRITE | AE | A/B | 1-46 | 2 | |
DOM 14238 | 10.5 | CK5 CHONDRITE | B | B/C | 30 | ||
DOM 14239 | 9.9 | CM1 CHONDRITE | BE | B/C | |||
DOM 14305 | 133.1 | CO3 CHONDRITE | A/BE | A/B | 1-56 | 51 | |
DOM 14359 | 393.0 | CO3 CHONDRITE | BE | A/B | 1-45 | 1-63 | |
Classification of the ordinary chondrites in Table 1 & 2 was done by Energy Dispersive Spectroscopic (EDS) methods using a Scanning Electron Microscope (SEM). This can include the analysis of several olivine and pyroxene grains to determine the approximate Fayalite and Ferrosilite values of the silicates, grouping them into H, L or LL chondrites. Petrologic types are determined by optical microscopy and are assigned based on the distinctiveness of chondrule boundaries on broken surfaces of a 1-3 g chip. While this technique is suitable for general characterization and delineation of equilibrated ordinary chondrites, those undertaking detailed study of any meteorite classified by optical methods alone should use caution. It is recommended that a polished thin section be requested to accompany any chip and appropriate steps for a more detailed characterization should be undertaken by the user. (Cari Corrigan, Smithsonian Institution) |