Title
Granite (medium-grained)
Identifier
SFM-5
Description
Hand Sample: Holocrystalline, phaneritic, medium-grained granite composed predominantly of smaller alkali feldspar crystals with larger crystals of smoky quartz, biotite, and plagioclase feldspar
Thin Section, XPL: Medium-grained euhedral and fine-grained anhedral crystals with moderate weathering observed. Minerals include 70% alkali feldspar, 20% quartz, 5% biotite
Date
1/20/1969
Contributor
Western Minerals, Inc.
Is Part Of
Spatial Coverage
St. Francois Mts. Batholith, Missouri red quarry of Missouri Granite Wares
Accrual Method
Purchased from Western Minerals, Inc
Unit
Butler Hill Granite
Number of Thin Sections
1