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Yttrialite-(Y) : (Y,Th)2[Si2O7], Elpidite : Na2ZrSi6O15·3H2O | |
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Khaldzan Buragtag massif, Altai Mts, Hovd Aimag (Khovd Aimag), Mongolia SEM image of medium bright in BSE section of Yttrialite-(Y) crystal embeded into dark Elpidite (K-Ca variety). Very small and the most bright inclusions are crystals of Fluornatropyrochlore (pyrochlore-(NaF)). Yttrialite of this locality is chocolate-brown and visually indistinguishable from thorite very abundant in this pegmatite. This is the ... |
| © Pavel M. Kartashov | Photo ID: 252784 View Count: 19 |
Yttrialite-(Y) : (Y,Th)2[Si2O7] | |
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Stetind, Tysfjord, Nordland, Norway dimension area mm. 6 x 6 photo and collection Luigi Chiappino |
| © luigi chiappino | Photo ID: 229761 View Count: 155 |
Yttrialite-(Y) : (Y,Th)2[Si2O7], Kamphaugite-(Y) : Ca(Y,REE)[OH|(CO3)2] · H2O | |
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Tommotskii Massif, Tommot river, Selennyakh range, Cherskii range system, Polar Yakutia, Saha Republic (Sakha Republic; Yakutia), Eastern-Siberian Region, Russia Black shining grains of yttrialite-(Y) in alkaline syenite matrix. Associated minerals are gadolinite-(Y), fergusonite-(Y) and tengerite-(Y). White veinlet of kamphaugite-(Y) is well visible. Specimen size 6x4x4 cm. Collected in early 60th. Pavel M. Kartashov collection and photo. |
| © Pavel M. Kartashov | Photo ID: 72905 View Count: 479 |
Yttrialite-(Y) : (Y,Th)2[Si2O7] | |
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Holmtjärn pegmatite, Idkerberget, Borlänge, Dalarna, Sweden Massive dark brown yttrialite in feldspar. Field of view 5 cm. |
| © B. Otter | Photo ID: 23036 View Count: 930 |
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