Charoite

URI: https://gptkb.org/entity/Charoite
GPTKB entity
Statements (47)
Predicate Object
gptkbp:instanceOf granite
gptkbp:associatedMinerals gptkb:tinaksite
gptkb:calcite
gptkb:albite
feldspar
quartz
magnesite
apatite
aegirine
nepheline
microcline
canasite
gptkbp:birefringence 0.010
gptkbp:category silicate mineral
gptkbp:chemicalFormula (K,Na)Ca2Si4O10(OH,F)·H2O
gptkbp:cleavage good
gptkbp:color lavender
lilac
violet
gptkbp:crystalSystem monoclinic
gptkbp:discoveredBy 1940s
gptkbp:firstDescribed 1978
gptkbp:foundIn gptkb:Russia
gptkbp:fracture splintery
gptkbp:hardnessMohs 5
6
https://www.w3.org/2000/01/rdf-schema#label Charoite
gptkbp:luster vitreous
silky
gptkbp:mainDeposit gptkb:Murun_Massif
gptkbp:mainDepositLocation gptkb:Sakha_Republic
gptkb:Siberia
gptkbp:namedAfter gptkb:Chara_River
gptkbp:opticalProperties biaxial (+)
gptkbp:pleochroism strong
gptkbp:radioactive non-radioactive
gptkbp:refractiveIndex 1.550
1.559
gptkbp:specificGravity 2.54
gptkbp:streak white
gptkbp:tenacity tough
gptkbp:transparency opaque
translucent
gptkbp:uses gptkb:building
granite
gptkbp:bfsParent gptkb:Precious_Stone
gptkbp:bfsLayer 6