Statements (33)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
mineral series
|
| gptkbp:chemicalFormula |
(Na,Ca)(Si,Al)4O8
|
| gptkbp:cleavage |
perfect on {001}
|
| gptkbp:color |
blue
gray white |
| gptkbp:composedOf |
gptkb:albite
anorthite |
| gptkbp:crystalSystem |
triclinic
|
| gptkbp:density |
2.62–2.76 g/cm³
|
| gptkbp:discoveredBy |
gptkb:Johann_Friedrich_Christian_Hessel
|
| gptkbp:hardnessMohs |
6-6.5
|
| gptkbp:hasMember |
gptkb:oligoclase
gptkb:albite anorthite andesine bytownite labradorite |
| https://www.w3.org/2000/01/rdf-schema#label |
plagioclase series
|
| gptkbp:luster |
vitreous
|
| gptkbp:namedAfter |
Greek words for 'oblique' and 'fracture'
|
| gptkbp:occurredIn |
metamorphic rocks
igneous rocks |
| gptkbp:opticalProperties |
twinning
striations on cleavage surfaces |
| gptkbp:streak |
white
|
| gptkbp:subclassOf |
gptkb:feldspar_group
|
| gptkbp:usedFor |
gptkb:ceramics
glass production gemstones |
| gptkbp:bfsParent |
gptkb:albite-anorthite_series
gptkb:albite |
| gptkbp:bfsLayer |
7
|