polucita
Sign in to savePollucite is a zeolite mineral with the formula 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.
Key facts
- Mineral.name
- Pollucite
- Mineral.category
- Tectosilicate minerals
- Mineral.group
- Zeolite group
- Mineral.image
- Pollucite-193819.jpg
- Mineral.imagesize
- 260px
- Mineral.caption
- Euhedral, tabular crystal of colorless, translucent and lustrous pollucite with frosted crystal faces from Afghanistan (size: 2.7 x 2.4 x 1.2 cm)
- Mineral.IMAsymbol
- Pol
- Mineral.strunz
- 9.GB.05
- Mineral.dana
- 77.1.1.2
- Mineral.system
- Isometric
- Mineral.class
- Hexoctahedral (mm) H-M symbol: (4/m 2/m)
- Mineral.symmetry
- Iad
- Mineral.unit cell
- a = 13.67 Å; Z = 16
- Mineral.color
- Usually colorless; also white, grey, pink, blue or violet
- Mineral.habit
- Usually massive; rare crystals are normally trapezohedral or cubic
- Mineral.cleavage
- None observed
- Mineral.fracture
- Conchoidal to uneven
- Mineral.tenacity
- Brittle
via Wikipedia infobox
Wikidata facts
- Named after
- Pollux
- Image
- Pollucite(CesiumMineral)USGOV.jpg
Show 11 more facts
- described by source
- Encyclopædia Britannica 11th edition
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.GB.05
- Commons category
- Pollucite
- Nickel-Strunz 9th edition (updated 2009)
- 9.GB.05
- solid solution series with
- analcime
- crystal system
- cubic crystal system
- type locality (geology)
- San Piero in Campo
- streak color
- white
- IMA Mineral Symbol
- Pol
- chemical formula
- Cs(Si₂Al)O₆·nH₂O
- Strunz 8th edition (series ID, updated)
- VIII/F.02
Sources (2)
via Wikidata · CC0
Article · Português
A Polucita é um mineral do tipo zeólito de fórmula química (Cs,Na)2Al2Si4O12•2H2O. Também contém com frequência ferro, cálcio, rubídio ou potássio como elementos substituintes. É importante como minério de césio e às vezes de rubídio. Forma uma solução sólida com analcima.
Abstract from DBpedia / Wikipedia · CC BY-SA