|
gptkbp:instanceOf
|
gptkb:mineral_group
|
|
gptkbp:category
|
inosilicate minerals
|
|
gptkbp:chemicalFormula
|
(Ca,Na)2-3(Mg,Fe,Al)5(Si,Al)8O22(OH)2
|
|
gptkbp:cleavage
|
prismatic (56° and 124°)
|
|
gptkbp:color
|
black
blue
brown
green
|
|
gptkbp:commonIn
|
gptkb:granite
diorite
gabbro
andesite
amphibolite facies rocks
schists
|
|
gptkbp:containsAsbestosVarieties
|
crocidolite
actinolite asbestos
amosite
anthophyllite asbestos
grunerite asbestos
tremolite asbestos
|
|
gptkbp:containsMineral
|
gptkb:hornblende
gptkb:tremolite
gptkb:actinolite
gptkb:anthophyllite
gptkb:cummingtonite
gptkb:glaucophane
gptkb:riebeckite
grunerite
|
|
gptkbp:crystalSystem
|
monoclinic
orthorhombic
|
|
gptkbp:distinctiveFeature
|
gptkb:pyroxene_group
cleavage angles (56° and 124°)
double chain silicate structure
|
|
gptkbp:environmentalHazard
|
asbestos-related diseases
|
|
gptkbp:event
|
metamorphic rocks
hydrothermal veins
igneous rocks
|
|
gptkbp:fracture
|
uneven
|
|
gptkbp:hardnessMohs
|
5-6
|
|
gptkbp:luster
|
vitreous
dull
|
|
gptkbp:namedFor
|
gptkb:René_Just_Haüy
|
|
gptkbp:nameOrigin
|
Greek 'amphibolos' meaning 'ambiguous'
|
|
gptkbp:opticalProperties
|
biaxial (+/-)
|
|
gptkbp:silicateStructure
|
double chain
|
|
gptkbp:specificGravity
|
2.9–3.6
|
|
gptkbp:streak
|
white
|
|
gptkbp:uses
|
geological indicator
industrial asbestos (historically)
|
|
gptkbp:bfsParent
|
gptkb:Nephrite
|
|
gptkbp:bfsLayer
|
6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Amphibole group
|