Title
Graywacke
Alternative Title
Sandstone
Identifier
FR-7
Description
Angular sand size grains, dominated by quartz, have a brown color with a greenish tint. Calcite found on weathered bedding planes after lithification. Slight folding of the bedding planes in one direction. (FOV: 1.28)
Date
Not given
Contributor
Western Minerals, Inc.
Spatial Coverage
From summit of pass (White's Hill) just east of Forest Knolls on Sir Francis Drake Highway,
Temporal Coverage
Mesozoic
Accrual Method
Purchased from Western Minerals, Inc.
Number of Thin Sections
1