ポルックス石
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 · 日本語
ポルックス石もしくはポルサイト (Pollucite)は、ゼオライト鉱物であり、一般的に鉄、カルシウム、カリウム、ルビジウムが置換元素として含まれる。構造式は、(Cs,Na)2Al2Si4O12·2H2O。 セシウムおよび時としてルビジウムの貴重な鉱石として重要である。 方沸石との間に、一連の固溶体系列を形成する。等軸六八面体の結晶系として分類され、白色、灰色、まれに桃色や青色の塊として結晶化するが、結晶性のよいものが形成されることはまれである。モース硬度6.5、比重2.9。脆性破壊を起こし、へき開はない。
Abstract from DBpedia / Wikipedia · CC BY-SA