Volkonskoite from
Kleggåsen Ruby Quarry, Froland, Agder, Norway
| Locality type: | Quarry | |
| Classification | ||
|---|---|---|
| Species: | Volkonskoite | |
| Formula: | Ca0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O | |
| Comments: | Found at the locality in a small body of strong hydrothermal alteration as a thin green crust around altered corundum crystals. Nilssen & Raade (1973) found 1.5% Cr2O3 in this clay mineral, and identified it as volkonskoite based on the powder x-ray diffraction pattern. This is obviously too little Cr to qualify as volkonskoite, which requires Cr as a site dominant ion. See Foord et al. (1987) for discussion. | |
| Colour: | green | |
| Confirmation | ||
| Validity: | Erroneously Reported | |
| Data | ||
| Mineral Data: | Click here to view Volkonskoite data | |
| Locality Data: | Click here to view Kleggåsen Ruby Quarry, Froland, Agder, Norway | |
| Data Identifiers | ||
| Mindat Occurrence Record ID: | 170999 | |
| Long-form Identifier: | 1:3:170999:5 | |
| GUID (UUID V4): | b3f803dc-8c28-4e7f-8edc-bcb4f95a7fa9 | |
| References | ||
