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Mineralati

Minerals

Microcline

microcline

KAlSi3O8

Microcline mineral - Stock Image - C017/9258 - Science Photo Library

Microcline mineral - Stock Image - C017/9258 - Science Photo Library — via www.sciencephoto.com · Source

Overview

Microcline (KAlSi3O8) is an important igneous rock-forming tectosilicate mineral. It is a potassium-rich alkali feldspar. It is common in granite and pegmatites. Microcline forms during slow cooling of orthoclase. Sanidine is a polymorph of alkali feldspar stable at yet higher temperature. Microcline has cross-hatch twinning that forms as a result of the transformation of monoclinic orthoclase into triclinic microcline. The chemical compound name is potassium aluminium silicate, and it is known as E number reference E555.

Identification characteristics

  • Mohs hardness 6

Scientific references

  1. Microcline — Wikidata. https://www.wikidata.org/wiki/Q421841 Link
  2. Microcline — Wikipedia. https://en.wikipedia.org/wiki/Microcline Link