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gptkbp:instanceOf
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Mineral group
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gptkbp:category
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Inosilicate minerals
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gptkbp:chemicalFormula
|
XY(Si,Al)2O6
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gptkbp:cleavage
|
Prismatic (two directions at nearly 90°)
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gptkbp:color
|
Black
Brown
Green
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gptkbp:commonIn
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gptkb:Amphibolite
gptkb:Gabbro
gptkb:Peridotite
Basalt
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gptkbp:containsMineral
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gptkb:Augite
gptkb:Jadeite
gptkb:Enstatite
gptkb:Spodumene
gptkb:Diopside
gptkb:Aegirine
gptkb:Bronzite
gptkb:Ferrosilite
gptkb:Hedenbergite
gptkb:Hypersthene
gptkb:Pigeonite
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gptkbp:crystalSystem
|
Monoclinic
Orthorhombic
|
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gptkbp:density
|
3.2–4.0 g/cm³
|
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gptkbp:discoveredIn
|
1796
|
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gptkbp:event
|
Igneous rocks
Metamorphic rocks
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gptkbp:fracture
|
Uneven
|
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gptkbp:habit
|
Granular
Massive
Short prismatic crystals
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gptkbp:hardnessMohs
|
5
6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Pyroxene group
|
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gptkbp:luster
|
Vitreous
|
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gptkbp:magnetType
|
Non-magnetic
|
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gptkbp:namedAfter
|
Greek words for 'fire' and 'stranger'
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gptkbp:opticalProperties
|
Biaxial (+/-)
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gptkbp:pleochroism
|
Weak to strong
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gptkbp:refractiveIndex
|
1.65–1.78
|
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gptkbp:solubility
|
Insoluble in water
|
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gptkbp:streak
|
White
|
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gptkbp:structureType
|
Single chain silicate
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gptkbp:tenacity
|
Brittle
|
|
gptkbp:transparency
|
Translucent to opaque
|
|
gptkbp:uses
|
Gemstone (jadeite, spodumene)
Industrial mineral
|
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gptkbp:bfsParent
|
gptkb:Jadeite
|
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gptkbp:bfsLayer
|
6
|