Chemistry:Svabite
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Short description: Chemical compound
| Svabite | |
|---|---|
 | |
| General | |
| Category | Mineral |
| Formula (repeating unit) | Ca 5(AsO 4) 3(F,OH) |
| Identification | |
| Color | Colorless yellowish white, gray, grayish green, colorless to pale lilac in transmitted light |
| Crystal habit | As stout prismatic hexagonal crystals, often modified by several bipyramids, up to 5 mm; also massive |
| Cleavage | Indistinct on {1010} |
| Fracture | Irregular/uneven |
| Tenacity | Brittle |
| Mohs scale hardness | 4.0 – 5.0 |
| Density | 3.50 – 3.80 (g/cm3) |
| Refractive index | 1.698 – 1.706 Uniaxial (−) |
| Other characteristics | Soluble in dilute acids |
Svabite is a arsenate mineral.[2] The mineral is rare and is also a member of the apatite group.[3]
It is named in 1891 by Hjalmar Sjögren after Anton von Swab.[4]
The mineral is isomorphous with apatite and mimetite.[3]
Occurrence
Svabite can be found in countries like Sweden or Germany .[3]
The mineral is rare in calc-silicate skarns and arsenate analogue.[5]
References
- ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W.
- ↑ "Svabite | mineral" (in en). https://www.britannica.com/science/svabite.
- ↑ 3.0 3.1 3.2 "Svabite" (in en-US). 25 March 2017. https://nationalgemlab.in/svabite/.
- ↑ "Svabite". https://www.mindat.org/min-3836.html.
- ↑ Ptáček, Petr (13 April 2016) (in en). Apatites and their Synthetic Analogues: Synthesis, Structure, Properties and Applications. BoD – Books on Demand. pp. 36. ISBN 978-953-51-2265-4. https://books.google.com/books?id=dmqQDwAAQBAJ&q=Svabite&pg=PA36.
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