Title
Altered Basalt Flow
Identifier
SFM-16
Description
Hand Sample: Aphanitic grey-black color. Weathers to yellow-tan and orange. Small vesicles present.
Thin Section: Primarily matrix of opaques and some mica. Clusters of very-fine grained olivine and feldspar crystals present
Date
1/20/1969
Contributor
Western Minerals, Inc.
Is Part Of
Spatial Coverage
St. Francois Mountains Batholith, Missouri
Accrual Method
Purchased from Western Minerals, Inc
Number of Thin Sections
1