Statements (52)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
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 |
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
|
| https://www.w3.org/2000/01/rdf-schema#label |
Amphibole group
|
| 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
|