|
gptkbp:instanceOf
|
granite
|
|
gptkbp:alternativeName
|
gptkb:cordierite
dichroite
|
|
gptkbp:associatedMinerals
|
gptkb:biotite
feldspar
granite
quartz
kyanite
sillimanite
spinel
|
|
gptkbp:category
|
silicate mineral
|
|
gptkbp:chemicalFormula
|
(Mg,Fe)2Al4Si5O18
|
|
gptkbp:cleavage
|
poor
|
|
gptkbp:color
|
blue
light blue
violet
yellowish gray
|
|
gptkbp:containsMineral
|
cordierite group
|
|
gptkbp:crystalSystem
|
orthorhombic
|
|
gptkbp:discoveredIn
|
1813
|
|
gptkbp:event
|
granite
metamorphic rocks
|
|
gptkbp:fracture
|
conchoidal
|
|
gptkbp:hardnessMohs
|
7–7.5
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
iolite
|
|
gptkbp:luster
|
vitreous
|
|
gptkbp:namedAfter
|
Greek word for violet
|
|
gptkbp:namedFor
|
gptkb:Abraham_Gottlob_Werner
|
|
gptkbp:notablePlace
|
gptkb:Brazil
gptkb:Finland
gptkb:India
gptkb:Madagascar
gptkb:Mozambique
gptkb:Myanmar
gptkb:Norway
gptkb:Sri_Lanka
gptkb:Tanzania
gptkb:United_States
|
|
gptkbp:opticalProperties
|
trichroic
|
|
gptkbp:pleochroism
|
strong
|
|
gptkbp:refractiveIndex
|
1.53–1.55
|
|
gptkbp:specificGravity
|
2.58–2.66
|
|
gptkbp:streak
|
white
|
|
gptkbp:transparency
|
translucent
transparent
|
|
gptkbp:usedAs
|
granite
|
|
gptkbp:uses
|
gptkb:building
gptkb:jewelry
|
|
gptkbp:bfsParent
|
gptkb:cordierite
|
|
gptkbp:bfsLayer
|
7
|