Table 1. Newly Classified Antarctic Meteorites
Sample Number | Weight (g) | Classification | Weathering |
Fracturing |
%Fa |
%Fs |
Magnetic Susceptibility | |
---|---|---|---|---|---|---|---|---|
DOM 18001 | probe | 1820.0 | H5 Chondrite | B/C | B | 19 | 16 | 5.000 |
DOM 18005 | 1074.5 | H6 Chondrite | B/C | A | 20 | 17 | 5.280 | |
DOM 18007 | probe | 964.3 | H4 Chondrite | B/C | A/B | 18 | 16 | 5.330 |
DOM 18011 | 366.2 | H6 Chondrite | B/Ce | A | 20 | 17 | 5.200 | |
DOM 18012 | 196.9 | L6 Chondrite | B/C | A | 25 | 20 | 4.810 | |
DOM 18014 | 282.8 | L6 Chondrite | B/C | A/B | 25 | 22 | 4.680 | |
DOM 18015 | probe | 303.5 | L5 Chondrite | B/C | A/B | 24 | 20 | 4.420 |
DOM 18016 | 298.5 | L6 Chondrite | B/C | A | 25 | 22 | 4.810 | |
DOM 18017 | 249.5 | L6 Chondrite | B/C | A/B | 25 | 21 | 4.800 | |
DOM 18018 | 401.9 | L5 Chondrite | B/C | A/B | 25 | 22 | 4.470 | |
DOM 18025 | 129.5 | H6 Chondrite | B/C | A | 20 | 17 | 4.830 | |
DOM 18026 | 108.4 | L5 Chondrite | B | A | 25 | 21 | 5.090 | |
DOM 18028 | 148.0 | H5 Chondrite | B | B | 19 | 17 | 4.940 | |
DOM 18029 | 168.2 | L6 Chondrite | B | A/B | 26 | 22 | 4.770 | |
DOM 18030 | 99.9 | H6 Chondrite | B/C | A | 20 | 17 | 5.240 | |
DOM 18031 | 81.4 | LL6 Chondrite | A/B | A/B | 29 | 24 | 3.920 | |
DOM 18032 | 66.8 | L6 Chondrite | B/C | A | 26 | 23 | 4.350 | |
DOM 18040 | probe | 62.0 | H4 Chondrite | B/C | A/B | 18 | 12-16 | 5.070 |
DOM 18041 | 59.4 | H5 Chondrite | B/C | A | 20 | 16 | 5.080 | |
DOM 18042 | probe | 90.5 | H4 Chondrite | B | A | 18 | 16 | 5.080 |
DOM 18043 | 54.2 | L5 Chondrite | B | A | 26 | 21 | 4.610 | |
DOM 18044 | 124.0 | L6 Chondrite | B | A/B | 26 | 22 | 4.860 | |
DOM 18060 | 100.2 | L5 Chondrite | B | A/B | 26 | 21 | 4.650 | |
DOM 18061 | 113.1 | L5 Chondrite | A/B | A | 26 | 22 | 4.720 | |
DOM 18062 | 111.5 | H6 Chondrite | B/C | A | 20 | 18 | 5.230 | |
DOM 18063 | 132.8 | H5 Chondrite | B/C | A | 19 | 17 | 5.260 | |
DOM 18064 | 82.3 | L5 Chondrite | A/B | A | 25 | 22 | 4.740 | |
DOM 18065 | 121.0 | H6 Chondrite | B/C | A/B | 19 | 5.210 | ||
DOM 18066 | 79.8 | L6 Chondrite | B | A/B | 25 | 22 | 4.620 | |
DOM 18067 | 47.3 | L6 Chondrite | A/B | A | 25 | 21 | 4.660 | |
DOM 18068 | 98.8 | L5 Chondrite | B/C | A | 25 | 22 | 4.620 | |
DOM 18090 | 24.6 | L5 Chondrite | A/B | A | 25 | 22 | 4.550 | |
DOM 18091 | 22.1 | L6 Chondrite | A/B | A | 25 | 20 | 4.540 | |
DOM 18092 | 30.0 | L5 Chondrite | A/B | A | 25 | 22 | 4.640 | |
DOM 18094 | 23.8 | L6 Chondrite | A/B | A | 26 | 22 | 4.580 | |
DOM 18095 | 24.6 | L6 Chondrite | B/C | A | 25 | 22 | 4.510 | |
DOM 18096 | 16.1 | L6 Chondrite | B/C | A | 26 | 22 | 4.510 | |
DOM 18098 | 44.5 | L6 Chondrite | A/B | A | 25 | 21 | 4.660 | |
DOM 18099 | 10.1 | L6 Chondrite | B/C | A | 26 | 22 | 4.510 | |
DOM 18110 | 8.0 | L6 Chondrite | B/C | B/C | 25 | 22 | 4.480 | |
DOM 18111 | 17.2 | L6 Chondrite | B/C | B/C | 25 | 22 | 4.620 | |
DOM 18112 | 18.2 | L5 Chondrite | B/C | B | 26 | 21 | 4.620 | |
DOM 18113 | 20.3 | L6 Chondrite | B/C | B | 25 | 21 | 4.550 | |
DOM 18114 | 20.7 | L5 Chondrite | B/C | B | 25 | 22 | 4.600 | |
DOM 18115 | probe | 27.1 | L4 Chondrite | B/C | B/C | 24 | 20 | 4.570 |
DOM 18116 | 10.8 | L6 Chondrite | B/C | B | 25 | 21 | 4.630 | |
DOM 18117 | 14.9 | L6 Chondrite | B/C | B/C | 25 | 21 | 4.580 | |
DOM 18118 | 10.0 | L6 Chondrite | B/C | B | 26 | 22 | 4.660 | |
DOM 18119 | 22.4 | L6 Chondrite | B/Ce | B | 25 | 22 | 4.570 | |
DOM 18132 | probe | 7.6 | L5 Chondrite | B/C | B/C | 24 | 20 | 4.600 |
DOM 18133 | 15.1 | L5 Chondrite | B/C | B/C | 25 | 21 | 4.580 | |
DOM 18134 | 17.2 | L6 Chondrite | B/C | B | 26 | 22 | 4.610 | |
DOM 18135 | 26.6 | L6 Chondrite | B/C | B | 25 | 21 | 4.660 | |
DOM 18136 | 25.4 | L6 Chondrite | B/C | B/C | 25 | 22 | 4.540 | |
DOM 18137 | probe | 30.2 | L5 Chondrite | B/Ce | B/C | 24 | 20 | 4.400 |
DOM 18138 | 31.8 | H6 Chondrite | B/C | B | 20 | 17 | 5.090 | |
DOM 18139 | 19.0 | L6 Chondrite | B/C | B | 25 | 21 | 4.670 | |
DOM 18170 | 7.0 | L6 Chondrite | B/C | A | 26 | 23 | 4.560 | |
DOM 18171 | 15.2 | L6 Chondrite | A/B | A | 26 | 22 | 4.590 | |
DOM 18172 | 8.3 | L6 Chondrite | A/B | A | 25 | 22 | 4.610 | |
DOM 18174 | 9.1 | H6 Chondrite | B/c | A | 19 | 17 | 5.120 | |
DOM 18175 | 18.2 | L5 Chondrite | B/C | A | 25 | 22 | 4.550 | |
DOM 18176 | 12.7 | L6 Chondrite | B/C | A | 25 | 21 | 4.570 | |
DOM 18177 | 15.1 | L6 Chondrite | B/C | A | 25 | 22 | 4.490 | |
DOM 18178 | 15.1 | L6 Chondrite | B/C | A | 25 | 22 | 4.640 | |
DOM 18179 | 17.0 | L6 Chondrite | B | A | 25 | 22 | 4.580 | |
DOM 18190 | 20.5 | L6 Chondrite | B/Ce | B/C | 25 | 23 | 4.610 | |
DOM 18191 | 28.8 | L6 Chondrite | B/C | B/C | 25 | 20 | 4.590 | |
DOM 18192 | 26.3 | H5 Chondrite | B/C | B | 19 | 16 | 4.890 | |
DOM 18193 | 26.9 | L6 Chondrite | B/C | B/C | 26 | 22 | 4.560 | |
DOM 18194 | 14.0 | L6 Chondrite | B/C | B/C | 25 | 22 | 4.550 | |
DOM 18195 | 22.7 | L6 Chondrite | B/Ce | B | 25 | 20 | 4.530 | |
DOM 18196 | 15.0 | L6 Chondrite | B/Ce | B/C | 25 | 21 | 4.530 | |
DOM 18197 | probe | 12.0 | L5 Chondrite | B/C | B/C | 24 | 20 | 4.540 |
DOM 18198 | 16.3 | L6 Chondrite | B/C | B | 26 | 21 | 4.470 | |
DOM 18199 | 10.5 | L6 Chondrite | B/Ce | B | 25 | 21 | 4.460 | |
DOM 18270 | 26.6 | L6 Chondrite | B/C | A | 25 | 21 | 4.820 | |
DOM 18271 | 33.3 | L6 Chondrite | A/B | A | 25 | 22 | 4.860 | |
DOM 18272 | 62.1 | L6 Chondrite | A/B | A/B | 25 | 21 | 5.030 | |
DOM 18273 | 23.7 | H6 Chondrite | B/Ce | A | 18 | 17 | 4.960 | |
DOM 18274 | 39.7 | L6 Chondrite | B | A/B | 26 | 21 | 4.990 | |
DOM 18275 | 51.6 | L6 Chondrite | B | A | 25 | 22 | 4.840 | |
DOM 18276 | 39.5 | L5 Chondrite | B | A | 25 | 22 | 4.830 | |
DOM 18277 | 105.3 | L6 Chondrite | A/B | A/B | 25 | 22 | 5.150 | |
DOM 18278 | probe | 52.5 | L6 Chondrite | B/Ce | B | 24 | 20 | 5.330 |
DOM 18279 | 34.8 | L5 Chondrite | A/B | C | 25 | 21 | 4.660 | |
DOM 18290 | 73.8 | L6 Chondrite | B/C | B | 22 | 4.450 | ||
DOM 18294 | 36.2 | H6 Chondrite | B/Ce | B/C | 20 | 16 | 4.820 | |
DOM 18295 | 23.5 | H6 Chondrite | B/Ce | B | 20 | 15 | 4.950 | |
DOM 18296 | 37.9 | L6 Chondrite | B/C | A/B | 25 | 22 | 4.240 | |
DOM 18297 | 25.8 | H6 Chondrite | B/Ce | B/C | 20 | 17 | 4.830 | |
DOM 18298 | 35.7 | H5 Chondrite | B | B | 19 | 16 | 5.000 | |
DOM 18299 | 60.0 | L6 Chondrite | B/Ce | A/B | 25 | 22 | 4.710 | |
DOM 18310 | 36.4 | H6 Chondrite | B/Ce | A/B | 20 | 16 | 5.110 | |
DOM 18311 | 12.3 | H6 Chondrite | B/C | A/B | 19 | 17 | 4.940 | |
DOM 18312 | 16.5 | H5 Chondrite | B/C | A | 20 | 18 | 5.050 | |
DOM 18313 | 33.4 | H6 Chondrite | B/C | A | 20 | 16 | 4.860 | |
DOM 18314 | 42.6 | H5 Chondrite | A/B | B | 19 | 17 | 5.050 | |
DOM 18315 | 42.6 | H6 Chondrite | B/C | A/B | 20 | 17 | 5.070 | |
DOM 18316 | 33.1 | H6 Chondrite | B/C | A | 19 | 17 | 5.080 | |
DOM 18317 | 15.5 | H6 Chondrite | B/Ce | A | 20 | 17 | 4.890 | |
DOM 18318 | 22.6 | H6 Chondrite | B/C | A | 19 | 17 | 4.780 | |
DOM 18319 | probe | 33.9 | CO3 Chondrite | Ae | A/B | 1-44 | 1-8 | 4.780 |
DOM 18320 | 19.9 | H6 Chondrite | B/C | A | 20 | 16 | 5.100 | |
DOM 18321 | 15.6 | H6 Chondrite | B/c | A | 19 | 15 | 4.720 | |
DOM 18322 | 26.2 | H6 Chondrite | B/C | A | 20 | 17 | 4.940 | |
DOM 18323 | 22.8 | H6 Chondrite | B/C | A | 20 | 17 | 4.900 | |
DOM 18324 | probe | 30.8 | H5 Chondrite | B/C | A | 18 | 16 | 4.980 |
DOM 18325 | 12.8 | H6 Chondrite | B/C | A | 20 | 17 | 4.880 | |
DOM 18326 | 33.8 | H6 Chondrite | B/C | A | 20 | 17 | 5.070 | |
DOM 18327 | 18.1 | H6 Chondrite | B/C | A | 20 | 17 | 5.070 | |
DOM 18328 | 25.7 | H5 Chondrite | B/C | A | 19 | 15 | 4.980 | |
DOM 18330 | 25.8 | H6 Chondrite | B | A/B | 20 | 18 | 4.920 | |
DOM 18331 | 23.6 | H6 Chondrite | B/C | B | 19 | 16 | 4.800 | |
DOM 18332 | 29.9 | H6 Chondrite | B | A/B | 20 | 16 | 4.780 | |
DOM 18333 | 19.4 | H6 Chondrite | Be | A | 20 | 17 | 4.880 | |
DOM 18334 | probe | 18.1 | L5 Chondrite | A/Be | A/B | 24 | 20 | 4.430 |
DOM 18335 | 19.7 | L5 Chondrite | B | A/B | 26 | 22 | 4.620 | |
DOM 18336 | probe | 21.3 | H4 Chondrite | B/Ce | A/B | 18 | 16 | 4.690 |
DOM 18337 | 19.0 | L6 Chondrite | Be | A | 25 | 22 | 4.570 | |
DOM 18338 | 14.3 | L6 Chondrite | B | A | 25 | 22 | 4.510 | |
DOM 18339 | 37.5 | L5 Chondrite | A/B | A/B | 26 | 22 | 4.480 | |
DOM 18370 | probe | 1.1 | H6 Chondrite | B | A | 18 | 16 | 4.530 |
DOM 18371 | probe | 4.2 | H5 Chondrite | B/C | A | 18 | 16 | 5.010 |
DOM 18372 | 6.5 | H6 Chondrite | B/Ce | A | 20 | 16 | 4.920 | |
DOM 18373 | 3.5 | H5 Chondrite | B/C | A | 19 | 16 | 4.610 | |
DOM 18374 | 3.0 | L6 Chondrite | B/C | A | 26 | 21 | 4.360 | |
DOM 18375 | probe | 2.4 | H4 Chondrite | A/B | A | 17 | 16 | 5.020 |
DOM 18376 | 5.9 | L5 Chondrite | B/C | A | 26 | 21 | 4.290 | |
DOM 18377 | 3.5 | H6 Chondrite | B | A | 20 | 16 | 4.800 | |
DOM 18378 | 4.1 | H6 Chondrite | B | A | 19 | 16 | 4.980 | |
DOM 18379 | 2.8 | H6 Chondrite | B/C | A | 19 | 16 | 4.850 | |
DOM 18380 | probe | 3.9 | H4 Chondrite | Ae | A/B | 18 | 16 | 4.640 |
DOM 18382 | 12.9 | H5 Chondrite | B | A | 19 | 16 | 4.720 | |
DOM 18383 | 7.6 | H6 Chondrite | B/Ce | A/B | 20 | 17 | 4.680 | |
DOM 18384 | 10.1 | L6 Chondrite | B | A | 25 | 22 | 4.640 | |
DOM 18386 | 14.7 | L5 Chondrite | B/C | A | 25 | 22 | 4.670 | |
DOM 18387 | 12.1 | H6 Chondrite | B/C | A | 20 | 16 | 4.710 | |
DOM 18390 | 24.1 | L6 Chondrite | B | A | 25 | 22 | 4.530 | |
DOM 18391 | 11.5 | L5 Chondrite | B | A | 26 | 22 | 4.470 | |
DOM 18392 | 21.3 | L5 Chondrite | B/C | A | 26 | 22 | 4.580 | |
DOM 18393 | 10.5 | L6 Chondrite | B | A | 26 | 22 | 4.580 | |
DOM 18394 | 16.3 | L5 Chondrite | B | A | 26 | 21 | 4.660 | |
DOM 18395 | 17.5 | L6 Chondrite | A/B | A | 25 | 21 | 4.700 | |
DOM 18397 | 24.5 | L6 Chondrite | A/B | A | 26 | 21 | 4.590 | |
DOM 18398 | 19.9 | L5 Chondrite | A/B | A | 26 | 22 | 4.680 | |
DOM 18399 | 18.8 | L5 Chondrite | B | A | 25 | 22 | 4.560 | |
DOM 18500 | 8.1 | L6 Chondrite | B | A | 25 | 22 | 4.620 | |
DOM 18501 | 9.9 | L6 Chondrite | B | A | 26 | 20 | 4.630 | |
DOM 18502 | 5.0 | L6 Chondrite | B | A | 25 | 21 | 4.630 | |
DOM 18503 | 12.2 | L5 Chondrite | B | A | 26 | 22 | 4.630 | |
DOM 18504 | 10.8 | L5 Chondrite | B | A | 25 | 22 | 4.660 | |
DOM 18505 | 11.2 | L5 Chondrite | B | A | 25 | 22 | 4.700 | |
DOM 18507 | 10.6 | L6 Chondrite | B | A | 25 | 22 | 4.430 | |
DOM 18508 | 10.6 | L6 Chondrite | B | A | 25 | 21 | 4.130 | |
DOM 18521 | 9.7 | H6 Chondrite | B | A | 20 | 16 | 4.920 | |
DOM 18522 | 6.5 | L5 Chondrite | B/C | A | 25 | 22 | 4.380 | |
DOM 18523 | 16.5 | L6 Chondrite | B/C | A | 25 | 22 | 4.620 | |
DOM 18524 | 16.1 | L6 Chondrite | B | A/B | 25 | 22 | 4.610 | |
DOM 18525 | 14.7 | L6 Chondrite | B | B | 25 | 22 | 4.560 | |
DOM 18526 | 10.6 | L6 Chondrite | B/C | A | 26 | 22 | 4.650 | |
DOM 18527 | 5.6 | L6 Chondrite | B/C | A | 26 | 22 | 4.610 | |
DOM 18528 | 2.7 | L6 Chondrite | B/C | A | 26 | 22 | 4.560 | |
DOM 18530 | probe | 32.3 | L3.6 Chondrite | B | A/B | 19-27 | 9-48 | 4.380 |
DOM 18531 | 19.7 | L6 Chondrite | B | A | 26 | 22 | 4.510 | |
DOM 18532 | probe | 32.5 | L5 Chondrite | A/B | A/B | 25 | 20 | 4.500 |
DOM 18533 | 35.4 | L5 Chondrite | A/B | A | 25 | 21 | 4.610 | |
DOM 18534 | 18.8 | L6 Chondrite | B | A | 26 | 22 | 4.660 | |
DOM 18535 | 13.4 | L5 Chondrite | A/B | A | 25 | 21 | 4.630 | |
DOM 18536 | 15.7 | L6 Chondrite | A/B | A | 26 | 21 | 4.540 | |
DOM 18537 | 12.5 | L5 Chondrite | A/B | A | 25 | 22 | 4.560 | |
DOM 18538 | 10.5 | L5 Chondrite | A/B | A | 25 | 22 | 4.770 | |
DOM 18539 | 9.2 | L5 Chondrite | A/B | A | 25 | 22 | 4.580 | |
DOM 18660 | 13.2 | H5 Chondrite | B | A/B | 20 | 15 | 5.240 | |
DOM 18661 | 9.1 | H6 Chondrite | B/Ce | A | 21 | 18 | 4.850 | |
DOM 18662 | probe | 11.1 | L5 Chondrite | B/C | A | 24 | 20 | 4.520 |
DOM 18663 | 16.8 | L5 Chondrite | B | A/B | 26 | 22 | 4.540 | |
DOM 18664 | 10.2 | L5 Chondrite | A/B | B | 26 | 22 | 4.580 | |
DOM 18665 | 10.2 | L5 Chondrite | B | A/B | 26 | 21 | 4.540 | |
DOM 18667 | 12.6 | H5 Chondrite | B | A | 19 | 15 | 5.010 | |
DOM 18668 | probe | 13.2 | L5 Chondrite | A/B | A/B | 24 | 20 | 4.210 |
DOM 18669 | 11.3 | L6 Chondrite | B | A | 26 | 22 | 4.460 | |
DOM 18840 | 10.9 | L6 Chondrite | B/C | A/B | 26 | 21 | 4.500 | |
DOM 18841 | 8.7 | L6 Chondrite | B/Ce | A | 25 | 22 | 4.310 | |
DOM 18842 | 6.1 | H6 Chondrite | B/C | A | 21 | 17 | 4.820 | |
DOM 18843 | 10.2 | H6 Chondrite | B/C | A/B | 19 | 16 | 5.100 | |
DOM 18844 | 5.8 | H6 Chondrite | B/C | A/B | 20 | 16 | 4.950 | |
DOM 18846 | 4.1 | H6 Chondrite | B/C | A | 20 | 17 | 4.970 | |
DOM 18847 | 3.3 | H6 Chondrite | B/C | A | 20 | 16 | 4.980 | |
DOM 18848 | 8.8 | H6 Chondrite | B/Ce | A/B | 20 | 17 | 4.960 | |
DOM 18849 | 4.9 | H6 Chondrite | B/C | A | 20 | 18 | 5.000 | |
Classification of achondrites, carbonaceous chondrites and other unusual chondrites was done using electron microprobe analysis. 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) |