Title
Skrainka Diabase
Identifier
SFM-11
Description
Hand Sample: Porphyritic diabase with light crystals in a dark-grey-to-black groundmass. Plagioclase 45%, Pyroxene 45%, Hornblende 5%, Olivine and Biotite 5%
Thin Section, XPL: 70% medium-grained interlocking plagioclase laths, 8% olivine, 7% opaques, 15% groundmass.
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