Cyanotrichite
Cu4Al2(SO4)(OH)12(H2O)2IMA symbol: Cyaapproved
Cyanotrichite is a sulfate mineral with the formula Cu4Al2(SO4)(OH)12(H2O)2, crystallizing in the orthorhombic system. It has a Mohs hardness of 2, with a pearly luster, a specific gravity of 2.737. Its streak is light blue.
Photos
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Physical properties
| Hardness (Mohs) | 2single sourceWikidata (CC0) |
|---|---|
| Specific gravity | 2.737 g/cm3single sourceDana, System of Mineralogy, 6th ed. (1892) |
| Streak | light bluesingle sourceWikidata (CC0) |
| Luster | pearlyDana, System of Mineralogy, 6th ed. (1892) |
Chemistry (calculated)
| Molecular weight | 644.33 g/molcalculated from the IMA formula |
|---|---|
| Composition (wt%) | Cu 39.45%, Al 8.38%, S 4.98%, O 44.7%, H 2.5% |
Classification
| Nickel-Strunz (10th) | 7.DE.10Wikidata (CC0) |
|---|---|
| Nickel-Strunz (9th) | 7.DE.10Wikidata (CC0) |
| Dana (8th) | 31.2.1.1Wikidata (CC0) |