fluor-uvite
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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
- Image
- Uvite-155037.jpg
Show 5 more facts
- 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
- IMA Mineral Symbol
- Fluvt
- chemical formula
- CaMg₃(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃F
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Article
1 sectionsContents
- References
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 properties, it is uniaxial (-) and anisotropic, meaning that the velocity of light in the mineral depends on the path that it takes. In plane polarized light, uvite is colorless to pale yellow and shows weak pleochroism.
Uvite was first found in 1929 in Uva Province, Sri Lanka, hence the name.