Sanidine Trachyte

Sanidine Trachyte
Sanidine Trachyte
Excl. Tax: £1.00 Incl. Tax: £1.20

Availability: In stock

Sanidine trachyte rock specimens, named for the sanidine feldspar found within the rock. Specimens are a pale brown colour, and highly crystalline. Specimens are supplied in a labelled card tray.

* Required Fields

Excl. Tax: £1.00 Incl. Tax: £1.20
Description

Details

Sanidine trachyte is an igneous rock with an aphanitic to porphyritic texture. Chemically it is the volcanic equivalent of syenite. It contains up 65 % silica which rarely appears as quartz crystals. The dominant feldspar is sanidine (potassium feldspar). Trachyte can show a banded or streaky flow structure. The flow is picked out in thin section by aligned tabular phenocrysts & sanidine laths. The rock often contains minute irregular steam cavities which give specimens a rough texture & hence the name.
Reviews

You may also be interested in the following product(s)

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.