Title
Diabase
Identifier
FR-6
Description
Holocrystalline, medium grained, anhedral, ophitic, dibastic crystals. Low silica percentage (46.3%) for a Diabase, bordering on ultramafic compostion. Calcite is present on weathered surfaces, but not on fresh surfaces. (FOV: 3.2mm)
Date
Not given
Contributor
Western Minerals, Inc.
Spatial Coverage
Same as FR-5.
Temporal Coverage
Mesozoic
Accrual Method
Purchased from Western Minerals, Inc.
Number of Thin Sections
1