Trachyte

$4.00 inc GST

A light-colored, fine-grained igneous rock consisting primarily of alkali feldspar together with pyroxene minerals. This specimen’s characters are:
– a basic volcanic rock
-fine-grained
-dominantly alkali feldspar and pyroxene minerals, 3% intermediate
volcanic glass, 14% weak minerals (iddingsite, calcite and brown
smectite clay)
-belongs to the mapping unit Tertiary, “Tia” on the Morton 1:250000 map sheet, Geological Survey of Queensland, 1980.

Images are examples of specimens only.

Size and shape may vary.

Specimens are usually no smaller than 75mm in one dimension.

91 in stock

Category: Tag:

Description

A light-colored, fine-grained igneous rock consisting primarily of alkali feldspar together with pyroxene minerals. This specimen’s characters are:
– a basic volcanic rock
-fine-grained
-dominantly alkali feldspar and pyroxene minerals, 3% intermediate
volcanic glass, 14% weak minerals (iddingsite, calcite and brown
smectite clay)
-belongs to the mapping unit Tertiary, “Tia” on the Morton 1:250000 map sheet, Geological Survey of Queensland, 1980.

Images are examples of specimens only.

Size and shape may vary.

Specimens are usually no smaller than 75mm in one dimension.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.