Granite (pink medium-grained)
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
Is Part Of
St. Francois Mts. Batholith, Missouri at Scott's Quarry
Purchased from Western Minerals, Inc.
Butler Hill granite of Boros Group
Number of Thin Sections