Title
Sillimanite Granite
Identifier
NH-10
Description
Granite from the Spaulding Quartz Diorite. Thin section contains plagioclase, biotite, quartz, alkali feldspar, some garnet, and sillimanite. Hand sample shows quartz, feldspars, sillimanite, and mica.
Date
August 1979
Contributor
Western Minerals Inc.
Is Part Of
Spatial Coverage
Hillsboro Quad., very NE corner, about 0.25 mi N of Diamond
Temporal Coverage
Devonian
Accrual Method
Purchased from Western Minerals, Inc.
Unit
Spaulding Quartz Diorite
Number of Thin Sections
1