Hornfels, Green Diopside bearing

Title

Hornfels, Green Diopside bearing

Alternative Title

Slate - Hornfels - Whetstone

Identifier

TMJ-1

Description

Rock Sample:
The sample is metamorphic. It is green to light-green in color. There are very course grained tabular zones of metamorphism (12x4cm) and light to dark layering with non-uniform shapes and patterns. The grains are aphanitic. The majority of the sample has an overall smooth texture.

Thin Section:
The thin section has small vein-like fractures filled in by larger quartz crystals.There are some fractures that are not filled in. It is Quartz-rich, though the size of the quartz crystals are small.
-Quartz (80%)
-Pyroxene (20%)
-Magnification at 4x/0.10

Date

1969

Contributor

Western Minerals, Inc.

Spatial Coverage

Tanzawa Mountains, Japan South Portal of tunnel (Zone V)

Temporal Coverage

N/A

Accrual Method

Purchased from Western Minerals Inc.

Unit

(Zone V)

Number of Thin Sections

1

Geolocation