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Mineralati

Minerals

Cookeite

cookeite

(Al,Li)3Al2(Si,Al)4O10(OH)8

Cookeite: Mineral information, data and localities.

Cookeite: Mineral information, data and localities. — via www.mindat.org · Source

Overview

Cookeite is a mineral species of the silicate group and the phyllosilicate subgroup, part of the chlorite family, with the formula LiAl4(Si3Al)O10(OH)8. This soft, low-density mineral of variable color has a crystalline structure made up of alternating layers LiAl2(OH)6 and Al2O4(OH)2Si8O12 having several polytypes. Cookeite is often found as a product of hydrothermal alteration of silicates in pegmatites. It forms at relatively low temperatures (below 200 °C) and variable pressures.

Scientific references

  1. Cookeite — Wikidata. https://www.wikidata.org/wiki/Q1071116 Link
  2. Cookeite — Wikipedia. https://en.wikipedia.org/wiki/Cookeite Link