Granite (medium-grained)

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.

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

Geolocation