uviet
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Fluor-uvite is a tourmaline mineral with the chemical formula CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3F. It is a rare mineral that is found in calcium rich contact metamorphic rocks with increased amounts of boron. Uvite is trigonal hexagonal, which means that it has three equal length axes at 120 degrees, all perpendicular to its fourth axis which has a different length. Uvite is part of the space group 3m. Uvite's hardness has been measured to be 7.5 on the Mohs hardness scale. The color of uvite widely varies, depending on the sample, but is mostly deep green or brown. In regard to uvite's optical p
Key facts
- Mineral.imagesize
- 260px
- Mineral.name
- Fluor-uvite
- Mineral.category
- Cyclosilicatetourmaline group
- Mineral.image
- Uvite sur quartz (Brésil) 4.JPG
- Mineral.caption
- Uvite on quartz
- Mineral.formula
- CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3F
- Mineral.IMAsymbol
- Fluvt
- Mineral.strunz
- 9.CK.05
- Mineral.system
- Trigonal
- Mineral.class
- Ditrigonal pyramidal (3m) H-M symbol: (3m)
- Mineral.symmetry
- R3m
- Mineral.color
- Black, greenish-black, brownish-black, brown, green, colorless
- Mineral.cleavage
- None Observed
- Mineral.fracture
- Irregular/Uneven, Conchoidal
- Mineral.tenacity
- Brittle
- Mineral.mohs
- 7.5
- Mineral.luster
- Vitreous, Resinous
- Mineral.opticalprop
- Uniaxial (-)
via Wikipedia infobox
Wikidata facts
- Named after
- Uva Province
- Image
- Uvite-155037.jpg
Show 7 more facts
- type locality (geology)
- Franklin
- Commons category
- Uvite
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.CK.05
- Nickel-Strunz 9th edition (updated 2009)
- 9.CK.05
- crystal system
- trigonal crystal system
- IMA Mineral Symbol
- Fluvt
- chemical formula
- CaMg₃(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃F
Sources (1)
via Wikidata · CC0
Article · Nederlands
Het mineraal uviet ((Ca,Na)(Mg,Fe+2)3Al5Mg(BO3)3Si6O18(OH,F)4) is een geelbruin, bruin tot zwart silicaat en behoort tot de groep der toermalijnen.
Abstract from DBpedia / Wikipedia · CC BY-SA