|
gptkbp:instanceOf
|
granite
|
|
gptkbp:birefringence
|
0.004–0.007
|
|
gptkbp:category
|
silicate mineral
|
|
gptkbp:chemicalFormula
|
Be3Al2(Si6O18)
|
|
gptkbp:cleavage
|
poor basal
|
|
gptkbp:color
|
blue
green
red
white
yellow
colorless
pink
|
|
gptkbp:crystalSystem
|
hexagonal
|
|
gptkbp:discoveredBy
|
antiquity
|
|
gptkbp:event
|
pegmatites
granitic rocks
mica schists
|
|
gptkbp:fracture
|
conchoidal
|
|
gptkbp:gemVariety
|
gptkb:jewelry
gptkb:goshenite
gptkb:heliodor
gptkb:morganite
gptkb:red_beryl
aquamarine
|
|
gptkbp:hardnessMohs
|
7.5–8
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
beryl (mineral)
|
|
gptkbp:IMA_symbol
|
Brl
|
|
gptkbp:luster
|
vitreous
|
|
gptkbp:mainConstituent
|
oxygen
aluminum
silicon
beryllium
|
|
gptkbp:notablePlace
|
gptkb:Brazil
gptkb:Colombia
gptkb:Pakistan
gptkb:Russia
gptkb:United_States
|
|
gptkbp:pleochroism
|
weak to distinct
|
|
gptkbp:radioactive
|
non-radioactive
|
|
gptkbp:refractiveIndex
|
1.57–1.60
|
|
gptkbp:specificGravity
|
2.63–2.92
|
|
gptkbp:streak
|
white
|
|
gptkbp:symmetry
|
P6/mcc
|
|
gptkbp:tenacity
|
brittle
|
|
gptkbp:transparency
|
translucent
transparent
|
|
gptkbp:uses
|
granite
source of beryllium
|
|
gptkbp:bfsParent
|
gptkb:Element_4
gptkb:Metrovick_Beryl_turbojet
gptkb:Beryl_oil_field
|
|
gptkbp:bfsLayer
|
8
|