Statements (35)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:granite
|
| gptkbp:associatedMinerals |
gptkb:epidote
gptkb:jadeite gptkb:lawsonite gptkb:albite |
| gptkbp:birefringence |
0.023
|
| gptkbp:category |
inosilicate
|
| gptkbp:chemicalFormula |
Na2(Mg3Al2)Si8O22(OH)2
|
| gptkbp:cleavage |
prismatic
|
| gptkbp:color |
blue
bluish-gray |
| gptkbp:containsMineral |
gptkb:amphibole
|
| gptkbp:crystalSystem |
monoclinic
|
| gptkbp:etymology |
from Greek 'glaukos' (bluish-green) and 'phanos' (appearance)
|
| gptkbp:event |
blueschist facies rocks
|
| gptkbp:firstDescribed |
1845
|
| gptkbp:foundIn |
gptkb:California
gptkb:Greece gptkb:Italy gptkb:Japan gptkb:Norway |
| gptkbp:hardnessMohs |
6
|
| gptkbp:IMA_symbol |
gptkb:Gln
|
| gptkbp:luster |
vitreous
|
| gptkbp:opticalProperties |
biaxial (-)
|
| gptkbp:pleochroism |
strong
|
| gptkbp:refractiveIndex |
nα = 1.606–1.637
nβ = 1.615–1.654 nγ = 1.629–1.655 |
| gptkbp:specificGravity |
3.0–3.2
|
| gptkbp:streak |
gray
|
| gptkbp:symmetry |
C2/m
|
| gptkbp:bfsParent |
gptkb:amphibole
|
| gptkbp:bfsLayer |
6
|
| http://www.w3.org/2000/01/rdf-schema#label |
glaucophane
|