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Clarkeite from
Bjertnes pegmatite, Krødsherad, Buskerud, Norway
| Locality type: | Pegmatite | |
| Classification | ||
|---|---|---|
| Species: | Clarkeite | |
| Formula: | (Na,Ca,Pb)(UO2)O(OH) · 0-1H2O | |
| Formation: | Secondary | |
| Comments: | Found in as the brownish inner layer closest to the uraninite in concentric alterations nodules after uraninite (cfr. Kristiansen 2007). According to Neumann (1985) the mineral was identified by Reidar Åmli (no further details are given on the method of identification in the present (2025) litterature). Newer investigation by PXRD and SEM-XEDS confirms that clarkeite occurs at the Bjertnes pegmatite. | |
| Quality for species: | Good crystals or rich for species - important (!) | |
| Abundance at site: | Rare | |
| Confirmation | ||
| Validity: | Believed Valid | |
| Associated Minerals Based on Photo Data: | ||
| Fourmarierite | 21 | |
| Kasolite | 21 | |
| Uranophane | 20 | |
| Uraninite | 16 | |
| Rutherfordine | 10 | |
| Muscovite | 9 | |
| Data | ||
| Mineral Data: | Click here to view Clarkeite data | |
| Locality Data: | Click here to view Bjertnes pegmatite, Krødsherad, Buskerud, Norway | |
| Photo Gallery | View Gallery (6 photos) | |
| Data Identifiers | ||
| Mindat Occurrence Record ID: | 57086 | |
| Long-form Identifier: | 1:3:57086:4 | |
| GUID (UUID V4): | 0 | |
| References | ||
Bjertnes pegmatite, Krødsherad, Buskerud, Norway