Statements (27)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
granite
|
| gptkbp:category |
sulfate mineral
|
| gptkbp:chemicalFormula |
KAl3(SO4)2(OH)6
|
| gptkbp:cleavage |
perfect on {0001}
|
| gptkbp:color |
gray
reddish white yellow |
| gptkbp:crystalSystem |
trigonal
|
| gptkbp:discoveredBy |
15th century
|
| gptkbp:firstDescribed |
alunite, Italy
|
| gptkbp:hardnessMohs |
4
|
| https://www.w3.org/2000/01/rdf-schema#label |
alunite
|
| gptkbp:IMA_symbol |
Aln
|
| gptkbp:luster |
vitreous
pearly |
| gptkbp:namedAfter |
Alun, Italy
|
| gptkbp:relatedGroup |
alunite supergroup
|
| gptkbp:specificGravity |
2.6–2.8
|
| gptkbp:streak |
white
|
| gptkbp:tenacity |
brittle
|
| gptkbp:transparency |
opaque
translucent |
| gptkbp:uses |
source of alumina
source of potash |
| gptkbp:bfsParent |
gptkb:zunyite
|
| gptkbp:bfsLayer |
7
|