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celestine

File:Celestine_-_Sakoany_deposit,_Katsepy,_Mitsinjo,_Boeny,_Madagascar.jpg · Wikimedia Commons · See Wikimedia Commons

EntityQ407221· pop 47· linked from 80 articles

Also known as celestite

strontium sulfate mineral

Key facts

Category
Sulfate minerals
Formula
Sr S O 4 sometimes contains minor calcium and/or barium
Ima symbol
Clt
Strunz classification
7.AD.35
Crystal system
Orthorhombic
Crystal class
Dipyramidal (mmm) , H-M symbol : (2/m 2/m 2/m)
Space group
Pnma
Unit cell
a = 8.359 Å , b = 5.352 Å, c = 6.866 Å; Z = 4
Color
White, pink, pale green, pale brown, black, pale blue, reddish, greyish; colourless or lightly tinted in transmitted light
Crystal habit
Tabular to pyramidal crystals, also fibrous, lamellar, earthy, massive granular
Cleavage
Perfect on {001}, good on {210}, poor on {010}
Fracture
Uneven
Tenacity
Brittle
Mohs scale hardness
3.0–3.5
Luster
Vitreous, pearly on cleavages
Streak
white
Diaphaneity
Transparent to translucent
Specific gravity
3.95–3.97

via Wikipedia infobox

Wikidata facts

Image
Celestine - Sakoany deposit, Katsepy, Mitsinjo, Boeny, Madagascar.jpg
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Mohs' hardness
3.25
Commons category
Celestine
chemical formula
SrSO₄
Nickel-Strunz 9th edition (updated 2009)
7.AD.35
Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
7.AD.35
IMA Mineral Symbol
Clt
Strunz 8th edition (series ID, updated)
VI/A.08
Sources (2)

via Wikidata · CC0

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Article

Celestine (the IMA-accepted name) or celestite is a mineral consisting of strontium sulfate (SrSO4). The mineral is named after its occasional delicate blue color. Celestine and the carbonate mineral strontianite are the principal sources of the element strontium, commonly used in fireworks and in various metal alloys.

Etymology

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