BH250-152

Title

BH250-152

Subject

Granite

Description

Major Minerals: quartz, microcline, orthoclase
Minor Minerals: biotite, clinopyroxene, oxides, some sericite (secondary), iddingsite
Mineralogy Comments: some myrmekitic patterns

Coverage

Location: Black Hills, South Dakota, USA

Creator

Bereket Haileab

Source

From the rock collection of Bereket Haileab. Sample 152. Housed at Carleton College in Minnesota.

Type

Thin section and hand sample

Relation


View on ArcGIS Online here














































TAS diagram of sample BH250-152.

Collection

Igneous Rocks

Citation

Bereket Haileab, “BH250-152,” BH250 Mineralogy Teaching Collection, accessed April 26, 2026, https://bereket-haileab.geology.sites.carleton.edu/items/show/190.

Output Formats