bultfonteinite
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Bultfonteinite, originally dutoitspanite, is a pink, light-brown or colorless mineral with chemical formula Ca2SiO2(OH,F)4. It was discovered in 1903 or 1904 in the Bultfontein mine in South Africa, for which the mineral is named, and described in 1932.
Key facts
- Mineral.name
- Bultfonteinite
- Mineral.category
- Nesosilicates
- Mineral.image
- Bultfonteinite - Linxi, Chifeng City, Inner Mongolia, China.jpg
- Mineral.imagesize
- 260px
- Mineral.caption
- Bultfonteinite from Shijiangshan mine, China
- Mineral.formula
- Ca2SiO2(OH,F)4
- Mineral.IMAsymbol
- Bul
- Mineral.strunz
- 9.AG.80
- Mineral.dana
- 52.4.7.2
- Mineral.system
- Triclinic
- Mineral.class
- Pinacoidal ()(same H-M symbol)
- Mineral.symmetry
- P
- Mineral.unit cell
- a = 10.99 Å, b = 8.18 Åc = 5.67 Å, α = 93.95°β = 91.32°, γ = 89.85°; Z = 4
- Mineral.color
- Colorless, pink, light brown
- Mineral.twinning
- Interpenetrating on {100} and {010}; polysynthetic
- Mineral.cleavage
- Good on {100} and {010}
- Mineral.fracture
- Conchoidal
- Mineral.mohs
- 4.5
via Wikipedia infobox
Wikidata facts
- Image
- Bultfonteinite - Linxi, Chifeng City, Inner Mongolia, China.jpg
Show 6 more facts
- Commons category
- Bultfonteinite
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.AG.80
- Nickel-Strunz 9th edition (updated 2009)
- 9.AG.80
- IMA Mineral Symbol
- Bul
- chemical formula
- Ca₂[SiO₃(OH)]F·H₂O
- Strunz 8th edition (series ID, updated)
- VIII/A’.06b
Sources (2)
via Wikidata · CC0
~4 min read
Article
6 sectionsContents
- Description
- Structure
- History
- Occurrence
- References
- External links
{{infobox mineral | name = Bultfonteinite | category = Nesosilicates | image = Bultfonteinite - Linxi, Chifeng City, Inner Mongolia, China.jpg | imagesize = 260px | caption = Bultfonteinite from Shijiangshan mine, China | formula = Ca2SiO2(OH,F)4 | IMAsymbol=Bul | molweight = | strunz = 9.AG.80 | dana = 52.4.7.2 | system = Triclinic | class = Pinacoidal ()(same H-M symbol) | symmetry = P | unit cell = a = 10.99 Å, b = 8.18 Åc = 5.67 Å, α = 93.95°β = 91.32°, γ = 89.85°; Z = 4 | color = Colorless, pink, light brown | habit = | twinning = Interpenetrating on {100} and {010}; polysynthetic | cleavage = Good on {100} and {010} | fracture = Conchoidal | tenacity = | mohs = 4.5 | luster = Vitreous | polish = | refractive = nα = 1.587nβ = 1.590nγ = 1.597 | opticalprop = Biaxial (+) | birefringence = δ = 0.010 | 2V = 70° (measured) | dispersion = r > v; barely perceptible | pleochroism = | fluorescence= | absorption = | streak = White | gravity = | density = | melt = | fusibility = | diagnostic = | solubility = Soluble in hydrochloric acid | diaphaneity = Transparent | references = }}
Bultfonteinite, originally dutoitspanite, is a pink, light-brown or colorless mineral with chemical formula Ca2SiO2(OH,F)4. It was discovered in 1903 or 1904 in the Bultfontein mine in South Africa, for which the mineral is named, and described in 1932.