Svabite
Svabite is a arsenate mineral.[1] The mineral is rare and is also a member of the Apatite group.[2]
| Svabite | |
|---|---|
| General | |
| Category | Mineral |
| Formula (repeating unit) | Ca5(AsO4)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 |
It is named in 1891 by Hjalmar Sjögren after Anton von Swab.[3]
The mineral is isomorphous with Apatite and Mimetite.[2]
Occurrence
Svabite can be found in countries like Sweden or Germany.[2]
The mineral is rare in calc-silicate skarns and arsenate analogue.[4]
References
- "Svabite | mineral". Encyclopedia Britannica. Retrieved 3 September 2021.
- "Svabite". National Gem Lab. 25 March 2017. Retrieved 5 September 2021.
- "Svabite". www.mindat.org. Retrieved 5 September 2021.
- Ptáček, Petr (13 April 2016). Apatites and their Synthetic Analogues: Synthesis, Structure, Properties and Applications. BoD – Books on Demand. p. 36. ISBN 978-953-51-2265-4.
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