Granite (pink medium-grained)

Title

Granite (pink medium-grained)

Identifier

SFM-3

Description

Hand Sample: Holocrystalline, phaneritic, medium-grained granitoid with an abundance of alkali feldspar. Other minerals include quartz and biotite. Some chemical weathering has produced a white coating.
Thin Section, XPL: 70% quartz, 15% potassium feldspar, 10% plagioclase feldspar, 5% biotite. Quartz grains are subhedral and moderately fractured

Date

1/20/1969

Spatial Coverage

St. Francois Mts. Batholith, Missouri at Scott's Quarry

Accrual Method

Purchased from Western Minerals, Inc.

Unit

Butler Hill granite of Boros Group

Number of Thin Sections

1

Geolocation