AMN 44,2 Table 1. Newly Classified Meteorites

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Home Antarctic MeteoritesAntarctic Meteorite NewslettersAMN 44,2 Table 1. Newly Classified Meteorites
Volume 44 No. 2 – September 2021

Table 1. Newly Classified Antarctic Meteorites

Sample Number Weight (g) Classification Weathering Fracturing %Fa %Fs Magnetic Susceptibility
DOM 18220 13.7L6 CHONDRITE CB/C25214.670
DOM 18221 9.4L6 CHONDRITE B/CB25204.630
DOM 18222 13.2H5 CHONDRITE B/CB19175.000
DOM 18223 16.1L5 CHONDRITE CB25204.830
DOM 18224 8.6L MELT BRECCIACA/B24214.540
DOM 18225 32.0L5 CHONDRITE BB26214.740
DOM 18226 24.0L6 CHONDRITE B/CB25214.520
DOM 18227 13.2L5 CHONDRITE BA/B26204.550
DOM 18228 39.2L5 CHONDRITE B/CB/C26214.620
DOM 18229 29.7H6 CHONDRITEB/CA/B19175.070
DOM 18400 7.4H6 CHONDRITEBA195.140
DOM 18401 14.9L5 CHONDRITE BB26204.670
DOM 18402 12.9H6 CHONDRITEBA20185.070
DOM 18403 10.7L5 CHONDRITE BB25204.620
DOM 18404 6.1L6 CHONDRITE B/CeB/C25214.510
DOM 18405 7.5H3.8 CHONDRITE BA17-338-184.980
DOM 18406 10.4L5 CHONDRITE BA/B25214.590
DOM 18407 8.6H6 CHONDRITEB/CA20175.210
DOM 18408 11.6L6 CHONDRITE B/CA/B25214.610
DOM 18409 8.2L5 CHONDRITE BeA/B25204.560
DOM 18410 7.6H6 CHONDRITEB/CA/B20174.960
DOM 18411 8.1H6 CHONDRITEB/CeB/C20174.840
DOM 18412 15.6L5 CHONDRITE A/BA/B25214.650
DOM 18413 21.1L6 CHONDRITE BB25214.620
DOM 18414 7.6L5 CHONDRITE BA/B25214.690
DOM 18415 6.7L5 CHONDRITE BA/B25204.500
DOM 18416 6.9L5 CHONDRITE BB25204.220
DOM 18417 12.7H4 CHONDRITE B/CA/B18164.980
DOM 18418 6.2H5 CHONDRITE BA/B20175.020
DOM 18419 11.7L5 CHONDRITE B/CB25214.680
DOM 18540 5.4H6 CHONDRITEB/CB20175.030
DOM 18541 4.6L5 CHONDRITE B/CA/B26204.450
DOM 18542 9.5L5 CHONDRITE BA25204.430
DOM 18544 9.1L5 CHONDRITE BA25204.480
DOM 18546 2.3L6 CHONDRITE B/CA/B24214.420
DOM 18547 9.3L5 CHONDRITE BA26204.480
DOM 18548 12.8L6 CHONDRITE B/CB25214.340
DOM 18549 8.4H5 CHONDRITE B/CA20164.810
DOM 18560 1.2L5 CHONDRITE B/CA/B25204.500
DOM 18561 0.8H6 CHONDRITEBB19175.010
DOM 18562 1.9H6 CHONDRITEB/CB20185.010
DOM 18563 1.6L6 CHONDRITE B/CB25214.490
DOM 18564 3.4H6 CHONDRITEB/CB20185.090
DOM 18565 3.7H5 CHONDRITE B/CA20175.210
DOM 18566 7.8L5 CHONDRITE BA25204.570
DOM 18569 9.5L6 CHONDRITE A/BA25224.730
DOM 18590 6.9L6 CHONDRITE A/BA25214.230
DOM 18591 20.2L5 CHONDRITE BA26204.590
DOM 18592 24.8L6 CHONDRITE B/CA26204.490
DOM 18593 14.6L5 CHONDRITE B/CA26204.600
DOM 18594 12.0L5 CHONDRITE B/CA26214.620
DOM 18595 18.5L5 CHONDRITE B/CA26204.550
DOM 18596 22.1L6 CHONDRITE B/CA25214.710
DOM 18597 41.4L5 CHONDRITE B/CA26214.700
DOM 18598 21.6L5 CHONDRITE B/CA26204.580
DOM 18599 17.3H6 CHONDRITEB/CA20175.070
DOM 18600 1.1H5 CHONDRITE BA/B19175.050
DOM 18601 2.0L5 CHONDRITE B/CB25204.530
DOM 18602 1.8H6 CHONDRITEB/CB20175.070
DOM 18603 2.3L5 CHONDRITE B/CB/C26204.520
DOM 18604 3.6L5 CHONDRITE B/CB/C26214.590
DOM 18605 1.9L5 CHONDRITE BA/B25214.510
DOM 18606 5.5H5 CHONDRITE B/CB19165.070
DOM 18607 12.8L6 CHONDRITE B/CB/C25214.530
DOM 18608 8.0L5 CHONDRITE BB25204.630
DOM 18609 13.6L5 CHONDRITE B/CB/C26204.540
DOM 18650 11.3L5 CHONDRITE BA/B26204.630
DOM 18651 10.5L6 CHONDRITE B/CB26204.180
DOM 18652 19.5L5 CHONDRITE A/BeA/B26204.560
DOM 18653 12.4L6 CHONDRITE BeB25214.580
DOM 18654 17.6L5 CHONDRITE BB25214.690
DOM 18659 29.6L6 CHONDRITE A/BeA/B24214.550
DOM 18673 9.3L6 CHONDRITE B/CB/C25214.510
DOM 18674 8.5L6 CHONDRITE B/CB25214.470
DOM 18675 4.3L6 CHONDRITE B/CA/B24204.660
DOM 18676 6.6H4 CHONDRITE B/CB18165.210
DOM 18724 15.7L6 CHONDRITE B/CeB/C25214.610
DOM 19019 58.5CM2 CHONDRITE AeB/C1-4612.770
DOM 19034 59.5CO3 CHONDRITE A/BA/B0-491-334.170
DOM 19035 18.5CK6 CHONDRITE A/BA/B324-274.650
DOM 19049 34.9CO3 CHONDRITE A/BeB1-561-24.750
DOM 19068 3.0CO3 CHONDRITE A/BeA1-444.780
DOM 19069 11.6CM2 CHONDRITE B/CeB/C1-48314.040
DOM 19099 24.3CO3 CHONDRITE A/BeA/B1-531-24.680
DOM 19117 15.9UREILITE A/BeB22194.360
DOM 19170 32.8CO3 CHONDRITE BeA/B14-2518-224.780
DOM 19179 30.9CO3 CHONDRITE BeA/B0-604.800
DOM 19340 13.8L MELT BRECCIABA0-5310-354.190
DOM 19346 326.4EUCRITE (BRECCIATED) A/BA/B20-603.470
GRO 17128 38.7CO3 CHONDRITE BA1-511-74.740

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)