BH250-110
Title
BH250-110
Subject
Garnet Biotite Schist
Description
Major Minerals: garnet, biotite, muscovite, plagioclase, quartz
Schistosity: Well-developed foliation due to the alignment of biotite and muscovite.
Porphyroblastic Texture: Garnets occur as porphyroblasts, growing large amidst a finer-grained matrix with quartz inclusions.
Schistosity: Well-developed foliation due to the alignment of biotite and muscovite.
Porphyroblastic Texture: Garnets occur as porphyroblasts, growing large amidst a finer-grained matrix with quartz inclusions.
Coverage
Location: Black Hills, South Dakota, USA
Creator
Bereket Haileab
Source
From the rock collection of Bereket Haileab. Sample BH250-110. Housed at Carleton College in Minnesota.
Type
Thin section and hand sample
Relation
Collection
Citation
Bereket Haileab, “BH250-110,” BH250 Mineralogy Teaching Collection, accessed April 25, 2026, https://bereket-haileab.geology.sites.carleton.edu/items/show/129.