آنکریت
Sign in to saveAnkerite, also known as brown spar () is a calcium, iron, magnesium, manganese carbonate mineral of the group of rhombohedral carbonates with the chemical formula . In composition it is closely related to dolomite, but differs from this in having magnesium replaced by varying amounts of iron(II) and manganese. It forms a series with dolomite and kutnohorite.
Key facts
- Mineral.name
- Ankerite
- Mineral.image
- Ankérite (Grandfontaine)-Musée de minéralogie de Strasbourg.jpg
- Mineral.imagesize
- 260px
- Mineral.category
- Carbonate mineral
- Mineral.IMAsymbol
- Ank
- Mineral.strunz
- 5.AB.10
- Mineral.system
- Trigonal
- Mineral.class
- Rhombohedral () H–M symbol: ()
- Mineral.symmetry
- R
- Mineral.unit cell
- a = 4.8312(2) c = 16.1663(3) [Å]; Z = 3
- Mineral.color
- Brown, yellow, white
- Mineral.habit
- Chrystals rhombohedral with curved faces; columnar, stalactitic, granular, massive
- Mineral.twinning
- Simple t {0001}, {100}. {110}
- Mineral.cleavage
- Perfect on {101}
- Mineral.fracture
- Subconchoidal
- Mineral.tenacity
- Brittle
- Mineral.mohs
- 3.5–4.0
- Mineral.luster
- Vitreous to pearly
via Wikipedia infobox
Wikidata facts
- Named after
- Matthias Joseph Anker
- Image
- Quartz; ankerite (48723944433).jpg
Show 12 more facts
- Commons category
- Ankerite
- discoverer or inventor
- Wilhelm Karl von Haidinger
- Nickel-Strunz 9th edition (updated 2009)
- 5.AB.10
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 5.AB.10
- solid solution series with
- kutnohorite
- crystal system
- trigonal crystal system
- streak color
- white
- described by source
- Encyclopædia Britannica 11th edition
- IMA Mineral Symbol
- Ank
- density
- 3
- chemical formula
- CaFe²⁺(CO₃)₂
- Strunz 8th edition (series ID, updated)
- Vb/A.03a
via Wikidata · CC0
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