|
gptkbp:instanceOf
|
granite
|
|
gptkbp:birefringence
|
0.008–0.010
|
|
gptkbp:category
|
oxide mineral
|
|
gptkbp:chemicalFormula
|
BeAl2O4
|
|
gptkbp:cleavage
|
distinct
|
|
gptkbp:color
|
brown
green
red
yellow
colorless
|
|
gptkbp:containsElement
|
oxygen
aluminum
beryllium
|
|
gptkbp:crystalSystem
|
orthorhombic
|
|
gptkbp:discoveredIn
|
1789
|
|
gptkbp:event
|
pegmatites
alluvial deposits
mica schists
|
|
gptkbp:fracture
|
conchoidal
|
|
gptkbp:hardnessMohs
|
8.5
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
chrysoberyl
|
|
gptkbp:IMAApprovalYear
|
1962
|
|
gptkbp:IMAStatus
|
approved mineral
|
|
gptkbp:luster
|
vitreous
|
|
gptkbp:namedFor
|
gptkb:Abraham_Gottlob_Werner
|
|
gptkbp:notableVariant
|
alexandrite
cat's eye
|
|
gptkbp:pleochroism
|
strong
|
|
gptkbp:refractiveIndex
|
1.746–1.755
|
|
gptkbp:source
|
gptkb:Brazil
gptkb:India
gptkb:Madagascar
gptkb:Myanmar
gptkb:Russia
gptkb:Sri_Lanka
gptkb:Tanzania
gptkb:Zimbabwe
|
|
gptkbp:specificGravity
|
3.5–3.8
|
|
gptkbp:streak
|
white
|
|
gptkbp:symmetry
|
Pbnm
|
|
gptkbp:transparency
|
translucent
transparent
|
|
gptkbp:uses
|
granite
|
|
gptkbp:bfsParent
|
gptkb:Royal_Alexandrite
|
|
gptkbp:bfsLayer
|
6
|