BH250-164

Title

BH250-164

Subject

Diorite

Description

Major Minerals: plagioclase, hornblende, quartz, epidote, orthoclase
Minor Minerals: titanite (sphene), epidote, iron-titanium oxides, perthite
Mineralogy Comments: myrmekite, magmatic epidote
Optics: bird's eye maple extinction, undulose extinction

Coverage

Location: Northfield, Minnesota, USA

Creator

Bereket Haileab

Source

From the rock collection of Bereket Haileab. Sample 164. Housed at Carleton College in Minnesota.

Type

Thin section and hand sample

Relation


View on ArcGIS Online here


















TAS diagram of sample BH250-164.

Collection

Igneous Rocks

Citation

Bereket Haileab, “BH250-164,” BH250 Mineralogy Teaching Collection, accessed April 25, 2026, https://bereket-haileab.geology.sites.carleton.edu/items/show/203.

Output Formats