|
gptkbp:instanceOf
|
granite
|
|
gptkbp:alternativeName
|
gptkb:iolite
dichroite
|
|
gptkbp:associatedElement
|
iron
oxygen
aluminum
magnesium
silicon
|
|
gptkbp:associatedMinerals
|
gptkb:biotite
gptkb:muscovite
feldspar
granite
andalusite
sillimanite
spinel
|
|
gptkbp:category
|
Cyclosilicate
|
|
gptkbp:chemicalFormula
|
(Mg,Fe)2Al4Si5O18
|
|
gptkbp:cleavage
|
poor
|
|
gptkbp:color
|
blue
gray
green
yellow
violet
|
|
gptkbp:crystalSystem
|
Orthorhombic
|
|
gptkbp:discoveredIn
|
1813
|
|
gptkbp:event
|
metamorphic rocks
igneous rocks
|
|
gptkbp:fracture
|
conchoidal
|
|
gptkbp:hardnessMohs
|
7–7.5
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Cordierite
|
|
gptkbp:IMAStatus
|
approved mineral
|
|
gptkbp:luster
|
vitreous
|
|
gptkbp:namedAfter
|
gptkb:Pierre_Louis_Antoine_Cordier
|
|
gptkbp:notablePlace
|
gptkb:Brazil
gptkb:India
gptkb:Madagascar
gptkb:Myanmar
gptkb:Norway
gptkb:Sri_Lanka
gptkb:USA
|
|
gptkbp:opticalProperties
|
pleochroic
|
|
gptkbp:pleochroism
|
strong
|
|
gptkbp:refractiveIndex
|
1.53–1.58
|
|
gptkbp:specificGravity
|
2.57–2.66
|
|
gptkbp:streak
|
white
|
|
gptkbp:symmetry
|
Cccm
|
|
gptkbp:tenacity
|
brittle
|
|
gptkbp:transparency
|
translucent
transparent
|
|
gptkbp:uses
|
gptkb:ceramics
granite
refractories
|
|
gptkbp:bfsParent
|
gptkb:Cyclosilicates
|
|
gptkbp:bfsLayer
|
7
|