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Steenstrupine-(Ce) : Na14Mn2+2(Fe3+,Mn3+)2Ce6(Zr,Th)[(OH)2|HPO4|(PO4)6|(Si6O18)2]·2H2O | |
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Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada Photographed by and in the collection of Doug Merson. |
| © 2005 DM | Photo ID: 31951 View Count: 318 |
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Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada The steenstrupine measures 1.5 x 1.1 cm. Via Jean-Pierre Beckerich. Very large (and quite rare) for MSH. Not analyzed but similar material from a similar find was determined to be steenstrupine-(Ce). The "xl" has a roughly hexagonal outline but the top and back have been sheared off and it may never have been truly euhedral. Only one or two ... |
| Photo ID: 188777 View Count: 64 | |
Steenstrupine-(Ce) : Na14Mn2+2(Fe3+,Mn3+)2Ce6(Zr,Th)[(OH)2|HPO4|(PO4)6|(Si6O18)2]·2H2O | |
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Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada Dark red blob of 0,6 mm Photo and collection Antonio Borrelli |
| © Antonio Borrelli | Photo ID: 212042 View Count: 27 |
Steenstrupine-(Ce) : Na14Mn2+2(Fe3+,Mn3+)2Ce6(Zr,Th)[(OH)2|HPO4|(PO4)6|(Si6O18)2]·2H2O | |
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Ilimaussaq complex, Narsaq, Kitaa (West Greenland) Province, Greenland Two sharp crystals of this extremely rare species, intergrown with each other on classic Greenland eudialyte-rich matrix. Though the cluster is larger, each crystal is to about 1 cm on edge 7.7 x 4.7 x 3.4 cm |
| © Rob Lavinsky | Photo ID: 21582 View Count: 487 |
Steenstrupine-(Ce) : Na14Mn2+2(Fe3+,Mn3+)2Ce6(Zr,Th)[(OH)2|HPO4|(PO4)6|(Si6O18)2]·2H2O | |
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Ilimaussaq complex, Narsaq, Kitaa (West Greenland) Province, Greenland 2.1 x 1.8 x 1.0 cm. This is a large, sharp crystal of the species and relatively aesthetic as well. Ex. Carlton Davis Collection. |
| © Rob Lavinsky | Photo ID: 177446 View Count: 67 |
Steenstrupine-(Ce) : Na14Mn2+2(Fe3+,Mn3+)2Ce6(Zr,Th)[(OH)2|HPO4|(PO4)6|(Si6O18)2]·2H2O | |
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Kangerdluarssuq (Kangerdluarssuk; Kangerdluarsuk) Firth, Ilimaussaq complex, Narsaq, Kitaa (West Greenland) Province, Greenland Rhombohedral Steenstrupine, crystal fragment, originally frozen in a coarse grained Albite-matrix, associated minerals are Epistolite and Aegirine, crystal is 8 mm in diameter, collection C. & H. Schäfer |
| © C.H.M.-Schäfer | Photo ID: 166087 View Count: 142 |
Steenstrupine-(Ce) : Na14Mn2+2(Fe3+,Mn3+)2Ce6(Zr,Th)[(OH)2|HPO4|(PO4)6|(Si6O18)2]·2H2O | |
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Kangerdluarssuq (Kangerdluarssuk; Kangerdluarsuk) Firth, Ilimaussaq complex, Narsaq, Kitaa (West Greenland) Province, Greenland Massive Steenstrupine with uneven fracture in a matrix consisting of a coarse grained Albite (rose-coloured to white), Aegirine (black) and Analcime (?, white), field of view is 50 mm, collection C. &H. Schäfer |
| © C.H.M.-Schäfer | Photo ID: 180231 View Count: 85 |
Steenstrupine-(Ce) : Na14Mn2+2(Fe3+,Mn3+)2Ce6(Zr,Th)[(OH)2|HPO4|(PO4)6|(Si6O18)2]·2H2O | |
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Kangerdluarssuq (Kangerdluarssuk; Kangerdluarsuk) Firth, Ilimaussaq complex, Narsaq, Kitaa (West Greenland) Province, Greenland 1.8 x 1.3 x 0.6 cm. A sharp, tabular, large crystal of the very rare rare-earth silicate with phosphate, steenstrupine, from the Type Locality in Greenland. This lustrous crystal has a sharp termination and is pristine. Rarely available. This is a superb, fine crystal. |
| © Rob Lavinsky | Photo ID: 251184 View Count: 18 |
Steenstrupine-(Ce) : Na14Mn2+2(Fe3+,Mn3+)2Ce6(Zr,Th)[(OH)2|HPO4|(PO4)6|(Si6O18)2]·2H2O, Ussingite : Na2AlSi3O8OH, Pectolite : NaCa2[HSi3O9] | |
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Lilleelv pegmatite, Lilleelv, Head of Kangerdluarssuq, Kangerdluarssuq (Kangerdluarssuk; Kangerdluarsuk) Firth, Ilimaussaq complex, Narsaq, Kitaa (West Greenland) Province, Greenland Tabular 3x2.5x0.5 cm unbroken crystal of dark-brown steenstrupine in violet ussingite from naujaite-pegmatite. Associated minerals are white pektolite and minor (unvisible from this side of the specimen) aegirine and epistolite. Specimen size is 4x4x2.5 cm and its radioactivity is 130 μR/h. Collected by Igor V. Pekov in July of 1994. Pavel M. ... |
| © Pavel M. Kartashov | Photo ID: 203416 View Count: 90 |
Steenstrupine-(Ce) : Na14Mn2+2(Fe3+,Mn3+)2Ce6(Zr,Th)[(OH)2|HPO4|(PO4)6|(Si6O18)2]·2H2O, Albite : Na[AlSi3O8] | |
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Kvanefjeld tunnel, Kvanefjeld Uranium deposit, Kuannersuit (Kvanefjeld) plateau, Ilimaussaq complex, Narsaq, Kitaa (West Greenland) Province, Greenland Grey grains and rough crystals of steenstrupine. Originally there was small grains of red villiaumite on the specimen too, but that mineral was dissolved with water. FOV: About 14 mm. The specimen was collected by the Danish collector Åse Mikkelsen, and it is now in the microcollection of OT. Ljostad |
| © OT. Ljostad | Photo ID: 201549 View Count: 66 |
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