BH250-6
Title
BH250-6
Subject
Breccia
Description
Major Mineral: muscovite, biotite, pyrite, anorthite, quartz
Texture Note: evidence of fluids through veins and depositing minerals such as calcite, sulfide
BH250-6 is a breccia composed of angular rock fragments containing muscovite, biotite, anorthite and quartz. Numerous veins record the movement of mineral-rich fluids through fractures after brecciation. As the fluids cooled or reacted with the surrounding rock, they deposited calcite and sulfide minerals, including pyrite, along the veins and in open spaces.
Texture Note: evidence of fluids through veins and depositing minerals such as calcite, sulfide
BH250-6 is a breccia composed of angular rock fragments containing muscovite, biotite, anorthite and quartz. Numerous veins record the movement of mineral-rich fluids through fractures after brecciation. As the fluids cooled or reacted with the surrounding rock, they deposited calcite and sulfide minerals, including pyrite, along the veins and in open spaces.
Creator
Bereket Haileab
Source
From the rock collection of Bereket Haileab. Sample 6. Housed at Carleton College in Minnesota.
Type
Thin section and hand sample
Relation
Collection
Citation
Bereket Haileab, “BH250-6,” BH250 Mineralogy Teaching Collection, accessed October 22, 2026, https://bereket-haileab.geology.sites.carleton.edu/items/show/6.