|
gptkbp:instanceOf
|
granite
|
|
gptkbp:associatedMinerals
|
gptkb:braunite
gptkb:goethite
gptkb:hausmannite
gptkb:manganite
hematite
|
|
gptkbp:category
|
oxide mineral
|
|
gptkbp:chemicalFormula
|
MnO2
|
|
gptkbp:cleavage
|
perfect on {110}
|
|
gptkbp:color
|
black
|
|
gptkbp:containsElement
|
oxygen
manganese
|
|
gptkbp:crystalSystem
|
tetragonal
|
|
gptkbp:Dana_classification
|
04.04.01.02
|
|
gptkbp:density
|
4.4-5.0 g/cm³
|
|
gptkbp:discoveredBy
|
gptkb:Johann_Gottlob_Lehmann
|
|
gptkbp:discoveredIn
|
1774
|
|
gptkbp:event
|
hydrothermal veins
sedimentary deposits
|
|
gptkbp:fracture
|
uneven
|
|
gptkbp:habit
|
fibrous
granular
columnar
|
|
gptkbp:hardnessMohs
|
6-6.5
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
pyrolusite
|
|
gptkbp:IMASymbol
|
Pyr
|
|
gptkbp:luster
|
metallic
|
|
gptkbp:namedAfter
|
Greek words for 'fire' and 'to wash'
|
|
gptkbp:solubility
|
insoluble in water
|
|
gptkbp:streak
|
black
|
|
gptkbp:Strunz_classification
|
4.DB.05
|
|
gptkbp:transparency
|
opaque
|
|
gptkbp:uses
|
glass decolorization
manufacture of batteries
ore of manganese
|
|
gptkbp:bfsParent
|
gptkb:Appalachian_region
|
|
gptkbp:bfsLayer
|
5
|