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Petscheckite : UFe(Nb,Ta)2O8 | |
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Tiltvika, Hamarøy, Nordland, Norway dimension area mm. 8 x 8 photo and collection Luigi Chiappino |
| © luigi chiappino | Photo ID: 229986 View Count: 49 |
Petscheckite : UFe(Nb,Ta)2O8 | |
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Case beryl prospects (Case quarries), Portland, Middlesex Co., Connecticut, USA Field of View: about 18 x 15 mm Individual Crystal Size: approx. 1.5 mm dia. Analysis: XRD: metamict - heated specimen; EDS Collected: October 2005 by Fred E Davis Photographer: Fred E Davis Third (or fourth) reported occurrence of Petscheckite in the world (Wisconsin ID is not confirmed) |
| © F E Davis 2006 | Photo ID: 77319 View Count: 637 |
Petscheckite : UFe(Nb,Ta)2O8, Liandratite : U(Nb,Ta)2O8 | |
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Case beryl prospects (Case quarries), Portland, Middlesex Co., Connecticut, USA Field of view: approx. 2 by 1.5 cm Collected by, photographed by, and in the collection of: Fred E. Davis Black, glassy petscheckite, yellow liandratite, with ferrocolumbite. This is the second occurrence of petscheckite from Case. Identification: XRD (heated specimen), EDS |
| © F E Davis | Photo ID: 117281 View Count: 357 |
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