BH250-205
Title
BH250-205
Subject
Pyroxenite, Stillwater Complex
Description
Major Minerals: enstatite (orthopyroxene), augite (clinopyroxene)
Minor Minerals: serpentine, plagioclase, sulfides, oxides, calcite (secondary)
Texture: course grained, intrusive ultramafic rock
Alteration: pyrxenes are heavily altered to serpentine due to hyrdorthermal fulids
Minor Minerals: serpentine, plagioclase, sulfides, oxides, calcite (secondary)
Texture: course grained, intrusive ultramafic rock
Alteration: pyrxenes are heavily altered to serpentine due to hyrdorthermal fulids
Coverage
Location: Stillwater, Montana, USA
GPS Coordinates: 45°23'19.69"N, 109°52'44.31"W
GPS Coordinates: 45°23'19.69"N, 109°52'44.31"W
Creator
Bereket Haileab
Source
From the rock collection of Bereket Haileab. Sample BH250-205. Housed at Carleton College in Minnesota.
Type
Thin section and hand sample
Relation
Collection
Citation
Bereket Haileab, “BH250-205,” BH250 Mineralogy Teaching Collection, accessed April 26, 2026, https://bereket-haileab.geology.sites.carleton.edu/items/show/257.