Macroscopic Description: Kathleen McBride
The exterior surface has patches of thin, dark brown fusion crust. The interior has a sandy textured cream colored matrix that is friable. Clasts and <mm black minerals are visible.

Thin Section (,3) Description: Cari Corrigan, Tim McCoy

Cross-Polarized Light	Plane-Polarized Light

The section shows a groundmass of essentially monominerallic, coarse (up to 1.5 mm) comminuted orthopyroxene of uniform composition (Fs₂₂Wo₂). The Fe/Mn ratio of the pyroxene is ~30. The meteorite is a diogenite and is possibly paired with QUE 99050.

Macroscopic Description: Kathleen McBride
The exterior has fractured, purplish fusion crust on ~40% of its surface. The surface is rough with polygonal fractures. The black matrix has <mm sized light inclusions.

Thin Section (,2) Description: Linda Welzenbach, Tim McCoy

Cross-Polarized Light	Plane-Polarized Light

The section consists of abundant 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 Fa_0-30, with many grains Fa_0-2; orthopyroxene is Fs_1-2. The matrix consists dominantly of an Fe-rich serpentine. The meteorite is a CM2 chondrite.

Macroscopic Description: Kathleen McBride
85% of the exterior is covered with purplish fusion crust with polygonal fractures. The interior has a black matrix with dark chondrules.

Thin Section (,2) Description: Linda Welzenbach, Tim McCoy

Cross-Polarized Light	Plane-Polarized Light

The section consists of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa_0-38, with many grains Fa_0-2. The matrix consists dominantly of an Fe-rich serpentine. The meteorite is a CM2 chondrite.

Macroscopic Description: Kathleen McBride
90% of the exterior has brown/black fusion crust with oxidation haloes and polygonal fractures. The interior is dark gray with high metal content and gray and rusty chondrules 1-2 mm sized.

Thin Section (,2) Description: Linda Welzenbach, Tim McCoy

Cross-Polarized Light	Plane-Polarized Light

The section exhibits numerous small, well-defined chondrules (up to 3 mm) in a black matrix of fine-grained silicates, metal and troilite. Weak shock effects are present. Polysynthetically twinned pyroxene is extremely abundant. The meteorite is highly weathered. Silicates are unequilibrated; olivines range from Fa_15-29 and pyroxenes from Fs_6-24. The meteorites are L3 chondrites (estimated subtype 3.7).

Sample No.: LAP 03587 Location: LaPaz Ice Field Field No.: 16871 Dimensions (cm):   6.0x4.5x3.0 Weight (g): 130.24 Meteorite Type: Ureilite

Macroscopic Description: Kathleen McBride
40% of the exterior has thick brown/black fusion crust with polygonal fractures. The exposed interior is weathered brown and friable, appearing like rounded lumps. The interior reveals a dark gray matrix with angular, interlocking mineral grains with rounded lighter gray inclusions. Small rust haloes and fractures are visible.

Thin Section (,2) Description: Cari Corrigan, Tim McCoy

Cross-Polarized Light	Plane-Polarized Light

The section consists of an aggregate of large olivine and pyroxene grains up to 2 mm across. Individual olivine grains are rimmed by carbon-rich material containing traces of metal. Shock effects in olivine are minor; pyroxenes exhibit mosaicism. Olivine has cores of Fa₂₅, with rims reduced to Fa₁₀. Pigeonite is Fs_14-20,Wo_8-10. The meteorite is a ureilite.

Macroscopic Description: Kathleen McBride
Black fusion crust with polygonal fractures covers 60% of the exterior. The interior has a medium gray matrix with black and gray inclusions. This meteorite has a high metal content with rust and an oxidation rind.

Thin Section (,2) Description: Linda Welzenbach, Tim McCoy

Cross-Polarized Light	Plane-Polarized Light

This meteorite is similar to and almost certainly paired with LAP 02238, the original description of which is given below:
The section consists of relatively few chondrules (up to 1 mm) and chondrule fragments in a fine-grained brecciated matrix, with very abundant iron sulfide and pentlandite and lesser abundances of oxides and graphite. Mineral compositions are olivine of Fa_27-46 (most Fa_38-40), orthopyroxene of Fs_18-36Wo_1-3 and augite Fs_9-15Wo_44-48. The olivine composition is similar to R chondrites, although graphite has not been previously reported in this group.

Sample No.: LAP 03718; LAP 03785 Location: LaPaz Ice Field Field No.: 16841; 16284 Dimensions (cm):   5.5x5.0x3.0 5.0x4.0x2.0 Weight (g): 95.209; 43.434 Meteorite Type: CM2 Chondrite

Macroscopic Description: Kathleen McBride
The exterior has purplish black fusion crust with some fractures. The interior is black with a few mm sized light colored chondrules. 718 has an evaporate rim.

Thin Section (,2) Description: Cari Corrigan, Tim McCoy
The sections consist of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa_1-48, with a peak at Fa_0-2; orthopyroxene is Fs₁. The matrix consists dominantly of an Fe-rich serpentine. The meteorites are CM2 chondrites.

LAP 03718 Cross-Polarized Light	LAP 03718 Plane-Polarized Light	LAP 03785 Cross-Polarized Light	LAP 03785 Plane-Polarized Light

Sample No.: LAP 03784 Location: LaPaz Ice Field Field No.: 16186 Dimensions (cm):   5.5x4.0x2.75 Weight (g): 50.922 Meteorite Type: CK5 Chondrite

Macroscopic Description: Kathleen McBride
50% of the exterior has rough, black fusion crust with polygonal fractures. The interior is steel gray matrix with mm sized gray chondrules.

Thin Section (,2) Description: Cari Corrigan, Tim McCoy

Cross-Polarized Light	Plane-Polarized Light

The section consists of chondrules up to 2 mm in a matrix of finer-grained silicates, sulfides and magnetite. Weathering is minor. Silicates are homogeneous with olivine of Fa₃₃. The meteorite is a CK5 chondrite.

Macroscopic Description: Kathleen McBride
The exterior is dull and rusty with oxidation haloes. This iron is shaped like a fish.

Thin Section (,2) Description: Cari Corrigan, Tim McCoy
We examined this small meteorite in polished section from a central slice. The section consists of ~90% kamacite with abundant Neumann bands that vary in spacing from a few to a hundred microns. No heat altered zone or a₂ structure was observed. Included within the metal are polyminerallic silicate inclusions that reach a few mm in diameter with included metal, troilite, chromite and pentlandite and a kidney-shaped troilite inclusion 1.2 mm in length. The silicates are broadly chondritic and relict barred chondrules are present. Silicates are homogeneous with olivine of Fa₂₄ and orthopyroxene of Fs₂₁. The meteorite is an ungrouped iron.

Sample No.: MIL 03368 Location: Miller Range Field No.: 13943 Dimensions (cm):   3.5x3.5x5.0 Weight (g): 80.930 Meteorite Type: Diogenite

Macroscopic Description: Kathleen McBride
50% of the exterior has chocolate brown fusion crust. The exposed interior is yellow brown in color with small, dark clasts. The interior is brecciated with numerous clasts (cm sized). Clasts vary in size and color with some being rusty and having crystalline rims. Fractures are visible.

Thin Section (,2) Description: Cari Corrigan, Tim McCoy

Cross-Polarized Light	Plane-Polarized Light

The section shows a groundmass of coarse (up to 5 mm) comminuted pyroxene, with minor olivine. Orthopyroxene has a composition of Fs₂₇Wo₃ and olivine is Fa₂₉. The Fe/Mn ratio of the pyroxene is ~30. The meteorite is a diogenite.

Sample No.: RBT 03522 Location: Robert Massif Field No.: 15348 Dimensions (cm):   6.0x5.5x4.0 Weight (g): 282.4 Meteorite Type: CK5 Chondrite

Macroscopic Description: Kathleen McBride
Small patches of brown/black fusion crust are visible on the exterior. The exposed interior is dark gray, with a rough texture and patches of white evaporites. The interior is steel gray matrix with mm sized gray chondrules. This carbonaceous chondrite is hard.

Thin Section (,2) Description: Cari Corrigan, Tim McCoy

Cross-Polarized Light	Plane-Polarized Light

The section consists of relict chondrules up to 2 mm in a matrix of finer-grained silicates, sulfides and magnetite. Weathering is minor, but shock-blackening is extensive. Silicates are homogeneous. Olivine is Fa_27-30 and orthopyroxene is Fs₂₈. The meteorite is a CK5 chondrite.

Macroscopic Description: Kathleen McBride
The exterior has a dull, black fusion crust with polygonal fractures. The black interior matrix contains small light colored chondrules. This carbonaceous chondrite is soft.

Thin Section (,2) Description: Linda Welzenbach, Tim McCoy

Cross-Polarized Light	Plane-Polarized Light

The section consists of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa_1-57. The matrix consists dominantly of an Fe-rich serpentine. The meteorite is a CM2 chondrite

Sample No.: SAN 03489 Location: Sandford Range Field No.: 13921 Dimensions (cm):   3.5x2.0x3.0 Weight (g): 29.188 Meteorite Type: Eucrite (Brecciated)

Macroscopic Description: Kathleen McBride
100% of the exterior has rough, black fusion crust with small glassy patches. The interior gray matrix has gray and white inclusions with thin hairline fractures.

Thin Section (,2) Description: Cari Corrigan, Tim McCoy

Cross-Polarized Light	Plane-Polarized Light

This section includes coarse- to fine-grained basaltic clasts up to 2 mm in a comminuted matrix of plagioclase and pyroxene. Pyroxene is dominantly pigeonite to subcalcic augite (Fs_48-59Wo_4-16) and plagioclase is An_82-95. The Fe/Mn ratio of the pyroxene is ~30. The meteorite is a brecciated eucrite.