|
gptkbp:instanceOf
|
mineral group
|
|
gptkbp:category
|
inosilicate
|
|
gptkbp:chemicalFormula
|
(Ca,Na)2-3(Mg,Fe,Al)5(Si,Al)8O22(OH)2
|
|
gptkbp:cleavage
|
56° and 124°
|
|
gptkbp:color
|
black
brown
green
colorless
|
|
gptkbp:crystalSystem
|
monoclinic
orthorhombic
|
|
gptkbp:event
|
metamorphic rocks
igneous rocks
|
|
gptkbp:fracture
|
uneven
|
|
gptkbp:habit
|
fibrous aggregates
prismatic crystals
columnar aggregates
|
|
gptkbp:hardnessMohs
|
5–6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
amphibole
|
|
gptkbp:luster
|
vitreous
dull
|
|
gptkbp:mainConstituent
|
hydrogen
iron
oxygen
aluminum
calcium
magnesium
silicon
|
|
gptkbp:namedFor
|
gptkb:René_Just_Haüy
|
|
gptkbp:nameOrigin
|
Greek 'amphibolos' meaning 'ambiguous'
|
|
gptkbp:notableMember
|
gptkb:hornblende
gptkb:tremolite
gptkb:actinolite
gptkb:anthophyllite
gptkb:arfvedsonite
gptkb:cummingtonite
gptkb:edenite
gptkb:ferrohornblende
gptkb:glaucophane
gptkb:magnesiohornblende
gptkb:pargasite
gptkb:riebeckite
|
|
gptkbp:opticalProperties
|
biaxial (+/-)
|
|
gptkbp:radioactive
|
non-radioactive
|
|
gptkbp:solubility
|
insoluble in water
|
|
gptkbp:specificGravity
|
2.9–3.6
|
|
gptkbp:streak
|
white
|
|
gptkbp:tenacity
|
brittle
|
|
gptkbp:transparency
|
translucent
transparent
|
|
gptkbp:uses
|
geological indicator
asbestos (some varieties)
|
|
gptkbp:bfsParent
|
gptkb:Bowen's_reaction_series
|
|
gptkbp:bfsLayer
|
5
|