analcime

views updated May 08 2018

analcime (analcite) Mineral, Na(AlSi2O6)H2O; sp. gr. 2.2–2.3; hardness 5.0–5.5; cubic; can be colourless or white, with grey, red, and greenish tints, sometimes pigmented with iron oxides; vitreous lustre; crystals polyhedra and tetragonal trioctahedra, also found in granular aggregates; cleavage poor, cubic; occurs in rocks of low-temperature igneous origin that are rich in soda and water (e.g. nepheline syenites), and also volcanic tuffs.

A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY

analcite

views updated May 08 2018

analcite See ANALCIME.

A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY

More From encyclopedia.com

About this article

Analcime

All Sources -
Updated Aug 08 2016 About encyclopedia.com content Print Topic

You Might Also Like