Sample No.:	LAP 03639; LAP 03731; LAP 03793; LAP 03902; LAP 031144; LAP 031387; LAP 04845
Location:	LaPaz Ice Field
Field No.:	16019; 16519; 16071; 16379; 16623; 16593; 17199
Dimensions (cm):	9.0x5.5x3.6; 4.0x2.5x3.0; 3.0x2.0x2.0; 2.0x1.5x1.25; 1.5x1.0x1.0; 1.25x0.5x1.0; 1.5x1.0x0.75
Weight (g):	139.938; 55.963; 15.043; 6.162; 2.479; 1.093; 1.137
Meteorite Type:	R Chondrite

Macroscopic Description: Kathleen McBride and Cecilia Satterwhite
The exteriors of these R chondrites have brown/black fusion crust with some evaporites. The interiors are gray with some large light and dark inclusions. Some oxidation and rust is present.

Thin Section (,2) Description: Valerie Reynolds and Tim McCoy
The sections are so similar that a single description suffices. The sections consist of ~50% of well-defined, small (up to 1 mm) chondrules set in a slightly recrystallized matrix of silicates and sulfides (both troilite and pentlandite). Olivines are nearly homogeneous (Fa_35-38, with a small tail of analyses down to Fa₆) and pyroxenes exhibit a larger range (Fs_1-30). The meteorites are R chondrites, probably of petrologic type 4.

Thin Section Images

Cross-Polarized Light LAP 03639	Plane-Polarized Light LAP 03639	Cross-Polarized Light LAP 03731	Plane-Polarized Light LAP 03731

Cross-Polarized Light LAP 03793	Plane-Polarized Light LAP 03793	Cross-Polarized Light LAP 03902	Plane-Polarized Light LAP 03902

Cross-Polarized Light LAP 031144	Plane-Polarized Light LAP 031144	Cross-Polarized Light LAP 031387	Plane-Polarized Light LAP 031387

Cross-Polarized Light Light LAP 04845	Plane-Polarized Light Light LAP 04845

Lab Images