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
~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.