Zinnwaldite
Wolframite, Zinnwaldite
Item-No.: MIN0159 Price: 130.00 EUR
Cínovec , Krušné Hory Mts, Ústí Region (Bohemia), Czech Republic
Zinnwaldite
Item-No.: MIN5491 Price: 95.00 EUR
Cínovec , Krusné Hory Mts, Ústí Region (Bohemia), Czech Republic
| Synonyms: | Lithioeisenglimmer |
| IMA Status: | Discredited, no longer a species - a series of trioctahedral micas on, or close to, the siderophyllite-polylithionite |
| Classification: | Silicates, Phyllosilicates, Mica Group |
| Chemical formula: | KLiFe2+Al(AlSi3O10)(F,OH)2 |
| Crystal system: | Monoclinic |
| Density (g/cm3): | 2,9 - 3,02 measured, 2,831 calculated |
| Tenacity: | Elastic, flexible |
| Cleavage: | Perfect on {001} |
| Fracture: | Micaceous |
| Hardness (Mohs): | 2,5 - 4 |
| Colour: | Silver-grey, green-grey, greyish-brown, yellowish-brown |
| Lustre: | Vitreous, Pearly |
| Streak: | White |
| Type locality: | Cínovec / Zinnwald (Cinvald), Erzgebirge; Krusné Hory Mts, Germany & Czech Republic |
| Application: | Important source of Lithium |