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gptkbp:instanceOf
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gptkb:mineral_group
|
|
gptkbp:abundance
|
most abundant mineral group in Earth's crust
|
|
gptkbp:chemicalFormula
|
(K,Na,Ca)(Al,Si)4O8
|
|
gptkbp:cleavage
|
perfect
|
|
gptkbp:color
|
brown
gray
white
pink
|
|
gptkbp:contains
|
gptkb:plagioclase_feldspar
gptkb:orthoclase
gptkb:albite
anorthite
alkali feldspar
microcline
|
|
gptkbp:crystalSystem
|
monoclinic
triclinic
|
|
gptkbp:density
|
2.55–2.76 g/cm³
|
|
gptkbp:discoveredBy
|
18th century
|
|
gptkbp:event
|
metamorphic rocks
sedimentary rocks
igneous rocks
|
|
gptkbp:fracture
|
uneven
|
|
gptkbp:hardnessMohs
|
6–6.5
|
|
gptkbp:luster
|
vitreous
|
|
gptkbp:mainConstituent
|
gptkb:granite
schist
syenite
|
|
gptkbp:namedAfter
|
German Feld (field) and Spat (a rock that does not contain ore)
|
|
gptkbp:relatedTo
|
gptkb:zeolite_group
quartz
mica group
|
|
gptkbp:solubility
|
insoluble in water
|
|
gptkbp:streak
|
white
|
|
gptkbp:subclassOf
|
tectosilicate minerals
|
|
gptkbp:transparency
|
transparent to translucent
|
|
gptkbp:uses
|
gptkb:ceramics
plastics
glassmaking
fillers in paints
|
|
gptkbp:weatheringProduct
|
clay minerals
|
|
gptkbp:bfsParent
|
gptkb:Moonstone
|
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gptkbp:bfsLayer
|
6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
feldspar group
|