barytocalcite
Sign in to saveBarytocalcite is an anhydrous barium calcium carbonate mineral with the chemical formula BaCa(CO3)2. It is trimorphous with alstonite and paralstonite, that is to say the three minerals have the same formula but different structures. Baryte and quartz pseudomorphs after barytocalcite have been observed.
Key facts
- Mineral.name
- Barytocalcite
- Mineral.image
- Barytocalcite w - rock Calcium barium carbonate Blaygill Alston Cumberland England 2302.jpg
- Mineral.caption
- Barytocalcite from England
- Mineral.category
- Carbonate mineral
- Mineral.formula
- BaCa(CO3)2
- Mineral.IMAsymbol
- Bcal
- Mineral.molweight
- 297.42 g/mol
- Mineral.strunz
- 5.AB.45
- Mineral.dana
- 14.02.06.01
- Mineral.system
- Monoclinic
- Mineral.class
- Prismatic (2/m) (same H-M symbol)
- Mineral.symmetry
- P21/m
- Mineral.unit cell
- a = 8.1 Å, b = 5.2 Å, c = 6.5 Å, β = 106°; Z = 2
- Mineral.colour
- Colourless, white, greyish, greenish, yellowish
- Mineral.habit
- Prismatic, drusy, massive – granular
- Mineral.cleavage
- Perfect in at least two directions
- Mineral.tenacity
- Brittle
- Mineral.mohs
- 4
via Wikipedia infobox
Wikidata facts
- Subclass of
- carbonate and nitrate class of minerals
- Named after
- calcium
- Image
- Barytocalcite-230536.jpg
Show 9 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 5.AB.45
- Commons category
- Barytocalcite
- Nickel-Strunz 9th edition (updated 2009)
- 5.AB.45
- streak color
- white
- crystal system
- monoclinic crystal system
- described by source
- Encyclopædia Britannica 11th edition
- IMA Mineral Symbol
- Bcal
- chemical formula
- BaCa(CO₃)₂
- Strunz 8th edition (series ID, updated)
- Vb/A.04 – Anhang
Sources (1)
via Wikidata · CC0
~6 min read
Encyclopedic overview
8 sectionsContents
- Structure
- Unit cell
- Appearance
- Optical properties
- Physical properties
- Type locality
- Other localities
- References
Barytocalcite is an anhydrous barium calcium carbonate mineral with the chemical formula BaCa(CO3)2. It is trimorphous with alstonite and paralstonite, that is to say the three minerals have the same formula but different structures. Baryte and quartz pseudomorphs after barytocalcite have been observed.
Barytocalcite crystallizes in the monoclinic crystal system, typically as massive to druzy accumulations of transparent white to yellow to grey aggregates of slender prismatic crystals. It has a Mohs hardness of 4 and a specific gravity of 3.64 to 3.71.
Excerpted from Wikipedia’s “barytocalcite” article, available under the CC BY-SA 4.0 licence.