BH250-233
Title
BH250-233
Subject
Dike (phonolitic compostion)
Description
Major Minerals: aegirine, aegirine-augite, riebeckite, orthoclase, plagioclase, nepheline
Minor Mineral: sphene
Minor Mineral: sphene
Coverage
Location: Lead, South Dakota, USA
Nearby Geographic Feature: Black Hills, South Dakota
GPS Coordinates: 44.356578, -103.787958
Nearby Geographic Feature: Black Hills, South Dakota
GPS Coordinates: 44.356578, -103.787958
Creator
Bereket Haileab
Source
From the rock collection of Bereket Haileab. Sample 233. Housed at Carleton College in Minnesota.
Type
Thin section and hand sample
Relation
Collection
Citation
Bereket Haileab, “BH250-233,” BH250 Mineralogy Teaching Collection, accessed April 24, 2026, https://bereket-haileab.geology.sites.carleton.edu/items/show/306.