Name: Grosvenor Mountains 95574 This is an OFFICIAL meteorite name. Abbreviation: GRO 95574 Observed fall: No Year found: 1995 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 90.6 g
Macroscopic Description: Kathleen McBride Ninety five percent of the exterior of this achondrite has smooth, black fusion crust, that appears shiny in some small patches. The interior is gray in color and resembles concrete. Almost no rust is present. There are light colored clasts approximately 1-2 mm in size and a few dark clasts < 1 mm in size.
Thin Section (,2) Description: Brian Mason The section shows a groundmass of comminuted pyroxene and plagioclase grains (up to 0.3 mm) with a few larger plagioclase clasts (up to 1 mm). Microprobe analyses show that most of the pyroxene is hypersthene (Wo1-5, Fs22-34); one grain of augite, Wo36Fs37, was analyzed, and several grains of intermediate composition. Plagioclase composition is An91-96. The meteorite is a howardite, very similar in texture and mineral compositions to GRO95534, 95535, 95581, and 95602, with which it is probably paired.
90.6 g
