Name: LaPaz Icefield 02216 This is an OFFICIAL meteorite name. Abbreviation: LAP 02216 Observed fall: No Year found: 2002 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 613 g
Macroscopic Description: Kathleen McBride 50% of the exterior has a chocolate brown fusion crust. The fusion crust is in patches and has a dull luster with polygonal fractures. The exposed interior has a greenish gray color and shows numerous inclusions. The interior is composed of a concrete gray matrix containing numerous olivine clasts of various sizes (mm to cm). The clasts range in color from a deep gray-green to light areas. There are a few black minerals with a rusty stain around them. The rock has a 0.5 to 0.75 cm weathering rind, yellow to rust in color. The clasts are easily plucked. There are many "casts" where olivine grains had been.
Thin Section (,6) Description: Tim McCoy, Linda Welzenbach
Plane-Polarized Light
Cross-Polarized Light
The section shows a groundmass of coarse (up to 1.5 mm) comminuted pyroxene, with minor SiO2. Orthopyroxene has a composition of Fs23Wo2 and an Fe/Mn ratio of ~28. The meteorite is a diogenite and is compositionally similar to LAP 91900, with which it may be paired.
613 g
