|
gptkbp:instanceOf
|
Mineral group
|
|
gptkbp:category
|
Inosilicate mineral
|
|
gptkbp:chemicalFormula
|
(XY)(Si,Al)2O6
|
|
gptkbp:cleavage
|
Prismatic (two at nearly 90°)
|
|
gptkbp:color
|
Black
Brown
Green
|
|
gptkbp:crystalSystem
|
Monoclinic
Orthorhombic
|
|
gptkbp:discoveredBy
|
gptkb:René_Just_Haüy
|
|
gptkbp:discoveredIn
|
1800
|
|
gptkbp:event
|
Igneous rocks
Metamorphic rocks
|
|
gptkbp:fracture
|
Uneven
|
|
gptkbp:habit
|
Granular
Massive
Short prismatic crystals
|
|
gptkbp:hardnessMohs
|
5
6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Pyroxene
|
|
gptkbp:luster
|
Vitreous
|
|
gptkbp:majorComponentOf
|
gptkb:Gabbro
gptkb:Peridotite
gptkb:Eclogite
Basalt
|
|
gptkbp:memberOf
|
gptkb:Silicate_minerals
|
|
gptkbp:namedAfter
|
Greek words for 'fire' and 'stranger'
|
|
gptkbp:notableMember
|
gptkb:Augite
gptkb:Jadeite
gptkb:Enstatite
gptkb:Spodumene
gptkb:Diopside
gptkb:Wollastonite
gptkb:Hedenbergite
gptkb:Pigeonite
|
|
gptkbp:opticalProperties
|
Biaxial (+/-)
|
|
gptkbp:refractiveIndex
|
1.75
1.65
|
|
gptkbp:relatedTo
|
gptkb:Amphibole
gptkb:Olivine
|
|
gptkbp:specificGravity
|
3.2
3.9
|
|
gptkbp:streak
|
White
|
|
gptkbp:tenacity
|
Brittle
|
|
gptkbp:transparency
|
Translucent
Opaque
|
|
gptkbp:uses
|
Gemstone (jadeite, spodumene)
Industrial mineral
|
|
gptkbp:bfsParent
|
gptkb:Feldspar
gptkb:Olivine
gptkb:Andesite
gptkb:Silicate_minerals
|
|
gptkbp:bfsLayer
|
6
|