Anhydrite
Anhydrite, or anhydrous calcium sulfate, is a mineral with the chemical formula CaSO4. It is in the orthorhombic crystal system, with three directions of perfect cleavage parallel to the three planes of symmetry. It is not isomorphous with the orthorhombic barium (baryte) and strontium (celestine) sulfates, as might be expected from the chemical formulas. Distinctly developed crystals are somewhat rare, the mineral usually presenting the form of cleavage masses. The Mohs hardness is 3.5, and the specific gravity is 2.9. The color is white, sometimes greyish, bluish, or purple. On the best developed of the three cleavages, the lustre is pearly; on other surfaces it is glassy. When exposed to water, anhydrite readily transforms to the more commonly occurring gypsum, (CaSO4·2H2O) by the absor
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Anhydrite
Anhydrite, or anhydrous calcium sulfate, is a mineral with the chemical formula CaSO4. It is in the orthorhombic crystal system, with three directions of perfect cleavage parallel to the three planes of symmetry. It is not isomorphous with the orthorhombic barium (baryte) and strontium (celestine) sulfates, as might be expected from the chemical formulas. Distinctly developed crystals are somewhat rare, the mineral usually presenting the form of cleavage masses. The Mohs hardness is 3.5, and the specific gravity is 2.9. The color is white, sometimes greyish, bluish, or purple. On the best developed of the three cleavages, the lustre is pearly; on other surfaces it is glassy. When exposed to water, anhydrite readily transforms to the more commonly occurring gypsum, (CaSO4·2H2O) by the absor
has abstract
Anhidrita formula kimikoa duen ...... a, pirita) batera agertzen da.
@eu
Anhydrit (Werner, 1803), chemi ...... l od sádrovce neobsahuje vodu.
@cs
Anhydrit är ett bergartsbildan ...... ch strontiumsulfat (celestin).
@sv
Anhydrite, or anhydrous calciu ...... , and pyrite in vein deposits.
@en
Anhydryt (gr. an = bez i hydro ...... ie z gipsu, kalcytu, i halitu.
@pl
Anidrita ou anidrite é um mine ...... co de fertilizantes e cimento.
@pt
Het mineraal anhydriet is de o ...... it proces noemt men diagenese.
@nl
L'anhidrita és un mineral de l ...... é és coneguda com a muriacita.
@ca
L'anidrite è un minerale forma ...... mica anidra rispetto al gesso.
@it
La anhidrita es un mineral com ...... se usa como piedra ornamental.
@es
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Wikipage page ID
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997,522,922
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birefringence
δ = 0.042–0.044
@en
boxbgcolor
#b7dfda
@en
caption
Anhydrite, Chihuahua, Mexico
@en
category
class
Dipyramidal
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H–M symbol:
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cleavage
[001] good, resulting in pseudocubic fragments
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[010] perfect
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[100] perfect
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color
Colorless to pale blue or viol ...... gray from included impurities
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dana
diaphaneity
Transparent to translucent
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formula
Anhydrous calcium sulfate:CaSO4
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fracture
Conchoidal
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fusibility
gravity
habit
Rare tabular and prismatic cry ...... ny, massive, or nodular masses
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imagesize
luster
Pearly on {010}
@en
vitreous on {100}
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vitreous to greasy on {001}
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mohs
name
Anhydrite
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opticalprop
Biaxial
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Other
Some specimens fluoresce; many more fluoresce after heating
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pleochroism
For violet varieties
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X = colorless to pale yellow or rose
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Y = pale violet or rose
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Z = violet.
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refractive
nα = 1.567–1.574
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nβ = 1.574–1.579
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nγ = 1.609–1.618
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streak
White
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symmetry
Amma
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tenacity
Brittle
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twinning
Simple or repeatedly on {011} common; contact twins rare on {120}
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unit cell
a = 6.245 Å, b = 6.995 Å
@en
c = 6.993 Å; Z = 4
@en
wikiPageUsesTemplate
wordnet_type
subject
hypernym
comment
Anhidrita formula kimikoa duen ...... a, pirita) batera agertzen da.
@eu
Anhydrit (Werner, 1803), chemi ...... l od sádrovce neobsahuje vodu.
@cs
Anhydrit är ett bergartsbildan ...... ch strontiumsulfat (celestin).
@sv
Anhydrite, or anhydrous calciu ...... sum, (CaSO4·2H2O) by the absor
@en
Anhydryt (gr. an = bez i hydro ...... obejmuje dwa pokrewne pojęcia:
@pl
Anidrita ou anidrite é um mine ...... co de fertilizantes e cimento.
@pt
Het mineraal anhydriet is de o ...... it proces noemt men diagenese.
@nl
L'anhidrita és un mineral de l ...... é és coneguda com a muriacita.
@ca
L'anidrite è un minerale forma ...... mica anidra rispetto al gesso.
@it
La anhidrita es un mineral com ...... temente es la localidad tipo.
@es
label
Anhidrita
@ca
Anhidrita
@es
Anhidrita
@eu
Anhidrito
@eo
Anhydriet
@nl
Anhydrit
@cs
Anhydrit
@de
Anhydrit
@sv
Anhydrite
@en
Anhydrite
@fr
differentFrom
wasDerivedFrom
isPrimaryTopicOf
name
Anhydrite
@en