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   Antarctic Meteorite Newsletter, Volume 30, No. 2 - August 2007
Volume 30, No. 2 - August 2006
Petrographic Descriptions   (Select a sample)


 
DNG 06004
GRA 06100
GRA 06101
GRA 06128
GRA 06129
GRA 06130
GRA 06131
GRA 06157
GRA 06172
GRA 06173
GRA 06189
LAP 04462
LAP 04475
LAP 04514
LAP 04516
LAP 04521
LAP 04527
LAP 04552
LAP 04565
LAP 04572
LAP 04581
LAP 04588
LAP 04592
LAP 04612
LAP 04614
LAP 04672
LAP 04675
LAP 04680
LAP 04689
LAP 04741
LAP 04745
LAP 04760
LAP 04796
LAP 04807
LAP 04809
LAP 04824
LAR 04364
LAR 04369
LAR 04380
LAR 04382
LAR 06319
LAR 06621
LAR 06638
LAR 06870
LAR 06875
LAR 06876
LAR 06877
MIL 05069
MIL 05147
RBT 04143
RBT 04251
RBT 04255
SCO 06040
SCO 06041
TYR 05181
 


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Sample No.: LAP 04527; LAP 04588; LAP 04675; LAP04680; LAP04760; LAP 04796; LAP04807
Location: LaPaz Ice Field
Field No.: 17697; 17473; 17629; 17644; 17619; 17186; 17028
Dimensions (cm):   1.5 x 1.5 x 0.75; 3.0 x 2.0 x 1.5; 2.5 x 2.0 x 1.5; 4.0 x 3.0 x 1.25;
1.0 x 1.0 x 1.0; 2.0 x 1.5 x 3.5; 15.695; 3.0 x 2.5 x 2.0
Weight (g): 1.964; 10.984; 6.573; 14.047; 1.119; 11.590
Meteorite Type:

CM2 Chondrite



Macroscopic Description: Kathleen McBride
The exteriors of these paired carbonaceous chondrites have varying amounts of fusion crust (40%-90%) and the colors range from purplish black to brown. The interiors are generally black with some oxidation, most have a powdery texture and contain chondrules of various colors. Varying degrees of oxidation exist in all these meteorites.

 

Thin Section (,2) Description: Tim McCoy, Lauren LaCroix and Linda Welzenbach
The meteorites are likely paired and a common description suffices. The sections consist of a few small chondrules (up to 1 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa1-61, orthopyroxene is Fs1-42. The meteorites are CM2 chondrites.



Thin Section Images

Reflected Light
LAP04527
Reflected Light
LAP04675
Reflected Light
LAP04680
Reflected Light
LAP04760
Reflected Light
LAP04807
LAP04527 - Reflected Light LAP04675 - Reflected Light LAP04680 - Reflected Light LAP04760 - Reflected Light LAP04807 - Reflected Light
Plane-Polarized Light
LAP04675
Cross Polarized Light
LAP04675
LAP04675 - Plane-Polarized Light LAP04675 - Cross Polarized Light



Lab Images

LAP 04527; LAP 04588; LAP 04675; LAP04680; LAP04760; LAP 04796; LAP04807