Statements (35)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
mineral group
|
| gptkbp:chemicalFormula |
BeAl2O4
|
| gptkbp:cleavage |
distinct on {110}
|
| gptkbp:color |
brown
green colorless yellow-green |
| gptkbp:containsElement |
oxygen
aluminum beryllium |
| gptkbp:crystalSystem |
orthorhombic
|
| gptkbp:discoveredBy |
1790
|
| gptkbp:fracture |
conchoidal
|
| gptkbp:hardnessMohs |
8.5
|
| https://www.w3.org/2000/01/rdf-schema#label |
chrysoberyl group
|
| gptkbp:includes |
gptkb:chrysoberyl
alexandrite cat's eye chrysoberyl |
| gptkbp:luster |
vitreous
|
| gptkbp:mainDeposits |
gptkb:Brazil
gptkb:Madagascar gptkb:Myanmar gptkb:Russia gptkb:Sri_Lanka |
| gptkbp:namedAfter |
Greek words for 'gold' and 'beryl'
|
| gptkbp:notableVariant |
alexandrite
cat's eye |
| gptkbp:opticalProperties |
biaxial (+)
|
| gptkbp:pleochroism |
strong in alexandrite
|
| gptkbp:refractiveIndex |
1.746–1.755
|
| gptkbp:specificGravity |
3.5–3.8
|
| gptkbp:transparency |
transparent to translucent
|
| gptkbp:uses |
granite
|
| gptkbp:bfsParent |
gptkb:Alexandrite
|
| gptkbp:bfsLayer |
7
|