Black Silty Shale

Alternative Title

Shale

Identifier

FR-14

Description

Clay sized feldspars and quartz present, but majority of crystal grains too small to identify in thin section. Surface contains some calcite that formed after lithification. Fresh surfaces do not effervesce with acid meaning reaction is caused by secondary calcite growth.

(Thin Section FOV: 0.64mm)

Date

Not given

Spatial Coverage

Temporal Coverage

Accrual Method

Purchased from Western Minerals, Inc.

Number of Thin Sections

1