Amphibolite, with some anthophyllite

Title

Amphibolite, with some anthophyllite

Alternative Title

Amphibolite

Identifier

TMJ-08

Description

Rock Sample:
The sample is a dark greenish blue with brown layering. On one side of the sample there is a sand-like residue that is tan in color. The sample is aphanitic and possesses micro-folds. The sample appears to have experienced some banding and rippling foliations. There is some evidence of chemical weathering which is dark brown orange in color. There is some talc or ash-like residue on some sides. It has a silty texture.

Thin Section:
The sample is hypocrystalline with very fine sized glass crystals. There is evidence of high-grade metamorphism. It has very fined grained grains especially under the microscope. The sample experiences micro-banding, micro-veins and micro-fractures.
-Quartz (70%)
-Augite (30%)
-Magnification at 4x/0.10

Scanning Electron Microscope:
The tan rough filament on the outside of the sample is made up of calcium, silicon, aluminum, oxygen, carbon. There were small signals of iron, potassium, and magnesium as well.

Date

1969

Contributor

Western Minerals, Inc.

Spatial Coverage

Tanzawa Mountains, Japan - 0.15Km south of South Contact of Quartz Diorite (Zone V)

Temporal Coverage

N/A

Accrual Method

Purchased from Western Minerals Inc.

Unit

(Zone V)

Number of Thin Sections

1

Geolocation