Voltaite from
Les Vieux Travaux mine, Montdardier, Le Vigan, Gard, Occitanie, France
| Locality type: | Mine | |
| Classification | ||
|---|---|---|
| Species: | Voltaite | |
| Formula: | K2Fe52+Fe33+Al(SO4)12 · 18H2O | |
| Comments: | Found in oxidizing pyrite with römerite, krausite and halotrichite, in the upper part of the mine called Florence-Est. Very rare at site but locally abundant. Some rare crystals have also been found in the lower parts of Florence-West area. | |
| Habit: | Mainly octahedric with more or less (100) faces, sometimes polysynthetic, in Florence Est occurence. Crystals from Florence West area are more cubic with (110) faces ( https://www.mindat.org/photo-792886.html ) | |
| Colour: | Black. dark green in thin splinters. | |
| Abundance at site: | Very Rare | |
| Special Storage/ Display Requirements: | soluble in water and hygroscopic - Samples should be stored in hermetic boxes with a few "silica gel' marbles. | |
| Confirmation | ||
| Validity: | Believed Valid | |
| Associated Minerals Based on Photo Data: | ||
| Halotrichite | 39 | |
| Khademite | 17 | |
| Römerite | 14 | |
| Pyrite | 8 | |
| Melanterite | 5 | |
| Krausite | 3 | |
| Native Sulphur | 2 | |
| Magnesiocopiapite | 1 | |
| Data | ||
| Mineral Data: | Click here to view Voltaite data | |
| Locality Data: | Click here to view Les Vieux Travaux mine, Montdardier, Le Vigan, Gard, Occitanie, France | |
| Photo Gallery | View Gallery (38 photos) | |
| Data Identifiers | ||
| Mindat Occurrence Record ID: | 885689 | |
| Long-form Identifier: | 1:3:885689:0 | |
| GUID (UUID V4): | 0 | |
| References | ||
SEM-EDS analysed at Laboratoire "Magmas et Volcans - Université de Clermont-Ferrand" by Pascal Chollet & Yannick VesselyIdentified by Pascal Chollet: SEM-EDS | ||
Les Vieux Travaux mine, Montdardier, Le Vigan, Gard, Occitanie, France