Amphibole (actinolite) in epidote, chlorite, garnet calcsilicate rock
Macroscopic: Porphyroblastic amphibole in epidote, chlorite, and garnet calcsilicate rock. This sample represent the metamorphism of calcarious concretions in beds of quartzite to a schist. The formation this samples comes from has considerable mineralogical variation yielding some garnet rich and some epidote rich zones. The hand sample has a mineral zone consisting of garnets. Microscopic: Large amphibole phenocryst observed as well as quartz and chlorite. Thin section pictures in XPL unless otherwise noted in the title of the picuture. Thin sections are 3mm across.
Western Minerals, Inc.
Number of Thin Sections