Title
Mudlick Latite
Identifier
SFM-27
Description
Hand Sample: Porphyritic latite with medium-to-coarse-grained subhedral plagioclase phenocrysts in a brown-black groundmass. Thin black veins present with green margin of contact on either side.
Thin Section, XPL: Medium-grained subhedral phenocrysts of plagioclase feldspar, quartz, and microcline feldspar in a matrix that appears to be made from the same minerals. Very fine vein of greenish minerals runs through sample.
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