Mudlick Latite

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.

Spatial Coverage

St. Francois Mountains Batholith, Missouri

Accrual Method

Purchased from Western Minerals, Inc.

Number of Thin Sections

1

Geolocation