kyanite

GPTKB entity

Statements (48)
Predicate Object
gptkbp:instanceOf mineral
gptkbp:associatedWith quartz
sillimanite
andalusite
gptkbp:awards vitreous to pearly
gptkbp:challenges 4.5 to 7
gptkbp:chemicalFormula Al2SiO5
gptkbp:climate stable up to 1500 °C
gptkbp:colors black
blue
green
gptkbp:displacement conchoidal to uneven
gptkbp:environmentalImpact high
poor
minimal when mined responsibly
https://www.w3.org/2000/01/rdf-schema#label kyanite
gptkbp:locatedIn gptkb:Australia
gptkb:Brazil
gptkb:China
gptkb:India
gptkb:Nepal
gptkb:North_Carolina
gptkb:Tanzania
gptkb:United_States
gptkb:Virginia
gptkb:Alaska
gptkbp:market varies by quality
can be high for gem-quality stones
gptkbp:notableTracks Bokota Mine
Bokota_Mine,_Madagascar
Kyanite_Mining_Corporation
Kyanite_deposit,_Brazil
Kyanite_deposit,_India
gptkbp:occursAnnually gneiss
schist
metamorphic rocks
gptkbp:productionCompany quarrying
open-pit mining
underground mining
gptkbp:rootSystem triclinic
gptkbp:surface 3.56 to 3.67
gptkbp:sustainability recyclable in some applications
gptkbp:team perfect in one direction
gptkbp:uses in ceramics
in electronics
as a gemstone
as a refractory material
gptkbp:visibility transparent to opaque