Quartz Diorite

Title

Quartz Diorite

Alternative Title

Plagioclase - Quartz - Diorite

Identifier

TMJ-07

Description

Rock Sample:
The color of the crystals within the sample is half-white and half-black in color. The internal part of the sample feels rough, but the outside layer of the sample feels more like a fine-grained. This could be due to erosion on the exterior of the sample. There are dark and white crystals that are ≤1cm in length. There are some areas of small, light green crystal blotches. Minor chemical weathering has taken place on this sample.

Thin Section:
There is micro-twinnings within some of the plagioclase crystals. There are also some large fractures within some of the coarse-sized quartz.
-Plagioclase (45%)
-Quartz (25%)
-Clinopyroxene (30%)
-Magnification at 4x/0.10

Date

1969

Contributor

Western Minerals, Inc.

Spatial Coverage

Tanzawa Mountains, Japan - North of South Contact

Temporal Coverage

N/A

Accrual Method

Purchased from Western Minerals Inc.

Unit

N/A

Number of Thin Sections

1

Geolocation