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Mineralati

Minerals

Pollucite

pollucite

Cs(Si2Al)O6·nH2O

Pollucite Crystal Specimen Afghanistan Rare Cesium Mineral Collector ...

Pollucite Crystal Specimen Afghanistan Rare Cesium Mineral Collector ... — via www.etsy.com · Source

Overview

Pollucite is a zeolite mineral with the formula (Cs,Na)2Al2Si4O12·2H2O with iron, calcium, rubidium and potassium as common substituting elements. It is important as a significant ore of caesium and sometimes rubidium. It forms a solid solution series with analcime. It crystallizes in the isometric-hexoctahedral crystal system as colorless, white, gray, or rarely pink and blue masses. Well-formed crystals are rare. It has a Mohs hardness of 6.5 and a specific gravity of 2.9, with a brittle fracture and no cleavage.

Identification characteristics

  • Mohs hardness 6.5

Scientific references

  1. Pollucite — Wikidata. https://www.wikidata.org/wiki/Q419274 Link
  2. Pollucite — Wikipedia. https://en.wikipedia.org/wiki/Pollucite Link