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   Antarctic Meteorite Newsletter, Volume 29, No. 2 - September 2006
Petrographic Descriptions   (Select a sample)


 
CRA 03540
GRO 03116
LAP 03639
LAP 03721
LAP 03722
LAP 03731
LAP 03781
LAP 03786
LAP 03793
LAP 03796
LAP 03822
LAP 03824
LAP 03902
LAP 031000
LAP 031043
 
LAP 031046
LAP 031047
LAP 031062
LAP 031079
LAP 031109
LAP 031113
LAP 031117
LAP 031125
LAP 031144
LAP 031165
LAP 031166
LAP 031190
LAP 031195
LAP 031220
LAP 031223
 
LAP 031252
LAP 031268
LAP 031275
LAP 031299
LAP 031308
LAP 031309
LAP 031316
LAP 031321
LAP 031342
LAP 031346
LAP 031347
LAP 031371
LAP 031379
LAP 031387
MIL 03377
 
MIL 03439
MIL 03442
MIL 03443
SAN 03472
SAN 03473
LAP 04836
LAP 04837
LAP 04838
LAP 04839
LAP 04841
LAP 04845
LAP 04846
MAC 041193
MAC 041219
RBT 04114
 
RBT 04162
RBT 04186
RBT 04228
RBT 04239
RBT 04299
RBT 04302
RBT 04309
MCY 05218
MCY 05219
MCY 05229
MCY 05230
MCY 05231
MCY 05232
MCY 05234
MCY 05242
MCY 05245
MCY 05251
MIL 05024
MIL 05029
MIL 05035
MIL 05050
MIL 05082
MIL 05085
MIL 05104
MIL 05112
MIL 05119
MIL 05124
MIL 05136
MIL 05137
MIL 05139
MIL 05152


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Sample No.: LAP 03781; LAP 03796; LAP 031000; LAP 031309; LAP 04836; LAP 04837; LAP 04839
Location: LaPaz Ice Field
Field No.: 16027; 16383; 16254; 16962; 16911; 16384; 16375
Dimensions (cm):   4.5x2.0x2.5; 3.0x2.0x2.0; 3.0x2.75x2.0; 3.0x2.0x2.0; 7.0x4.5x4.5; 9.0x6.5x5.0; 9.5x6.0x5.5
Weight (g): 35.004; 16.525; 27.874; 14.062; 263.100; 542.000; 569.400
Meteorite Type: Diogenite


Macroscopic Description: Kathleen McBride
The exterior of these diogenites has chocolate brown patches of fusion crust. The exposed interior has a rough texture and light green to white clasts. The interior is a light matrix, stained in areas with a washed out rusty color. Green clasts ranging in size from < 2 mm are visible.


Thin Section (,2) Description: Valerie Reynolds and Tim McCoy
The sections show a groundmass of coarse (up to 1.5 mm) comminuted pyroxene of composition of Fs23Wo2. The meteorites are diogenites and are compositionally similar to LAP 91900, with which they may be paired.



Thin Section Images

Cross-Polarized
Light LAP 03781
Plane-Polarized Light
LAP 03781
Cross-Polarized Light
LAP 03796
Plane-Polarized Light
LAP 03796
LAP 03781 - Cross-Polarized Light LAP 03781 - Plane-Polarized Light
LAP 03796 - Cross-Polarized Light LAP 03796 - Plane-Polarized Light
Cross-Polarized
Light LAP 031000
Plane-Polarized Light
LAP 031000
Cross-Polarized Light
LAP 031309
Plane-Polarized Light
LAP 031309
LAP 031000 - Cross-Polarized Light LAP 031000 - Plane-Polarized Light
LAP 031309 - Cross-Polarized Light LAP 031309 - Plane-Polarized Light
Cross-Polarized Light
LAP 04836
Plane-Polarized Light
LAP 04836
Cross-Polarized Light
LAP 04837
Plane-Polarized Light
LAP 04837
LAP 04836 - Cross-Polarized Light LAP 04836 - Plane-Polarized Light
LAP 04837 - Cross-Polarized Light LAP 04837 - Plane-Polarized Light
Cross-Polarized
Light LAP 04839
Plane-Polarized
Light LAP 04839
LAP 04839 - Cross-Polarized Light LAP 04839 - Plane-Polarized Light


Lab Images

LAP 03781,0 and ,1 Image Interior
LAP 03781 and 031000 Image North
LAP 03781 and 031000 Image North
LAP 03796,0 and ,1 Image Interior
LAP 031309,0 and ,1 Image Interior
LAP 031308 and 031309 Image North
LAP 04836,0 ,1 ,2 Image P
LAP 04837,0 ,1 ,2 Image Interior
LAP 04837,0 ,1 ,2 Image Interior