Svabite
Svabite | |
---|---|
General | |
Category | Mineral |
Formula (repeating unit) | Ca5(AsO4)3(F,OH) |
IMA symbol | Sva[1] |
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 Sj��gren 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. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ "Svabite | mineral". Encyclopedia Britannica. Retrieved 3 September 2021.
- ^ a b c "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.
Categories:
- Arsenate minerals
- Fluorine minerals