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Allanite-(Y) : {CaY}{Al2Fe2+}[O|OH|SiO4|Si2O7] | |
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Boden, Marienberg District, Erzgebirge, Saxony, Germany Dark brown Allanite-(Y). Picture size 10 mm. Photographer and collection Thomas Witzke. |
| © Thomas Witzke | Photo ID: 12098 View Count: 632 |
Allanite-(Y) : {CaY}{Al2Fe2+}[O|OH|SiO4|Si2O7] | |
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Seula mine (ex Montecatini quarry), Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy a 2 mm group of brown, prismatic crystals on albite self collected april 1996 sergio varvello photo and collection |
| © sergio varvello | Photo ID: 211848 View Count: 93 |
Allanite-(Y) : {CaY}{Al2Fe2+}[O|OH|SiO4|Si2O7], Thalénite-(Y) : Y3Si3O10(OH), Kimuraite-(Y) : Ca(Y,Nd)2[CO3]4 · 6H2O | |
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Åskagen (Torskebäcken), Filipstad, Värmland, Sweden 2x2 mm black tabular crystal of allanite-(Y) into yellowish massive thalenite-(Y). Such allanite contain up to 5.5 wt.% of Y2O3 and have formula Ca.99(Y.35Nd.19Sm.17Gd.13Dy.10Ce.04).98((Fe".72Mn.08).90Fe"'.11Al2.08)2.99Si3O12(OH).98. White films are later formed kimuraite-(Y) with formula ... |
| © Pavel M. Kartashov | Photo ID: 70496 View Count: 322 |
Allanite-(Y) : {CaY}{Al2Fe2+}[O|OH|SiO4|Si2O7], Kimuraite-(Y) : Ca(Y,Nd)2[CO3]4 · 6H2O, Thalénite-(Y) : Y3Si3O10(OH) | |
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Åskagen (Torskebäcken), Filipstad, Värmland, Sweden FOV ~1x0.8 cm. Black grains of allanite-(Y) into yellowish massive thalenite-(Y). Such allanite contain up to 5.5 wt.% of Y2O3 and have formula Ca.99(Y.35Nd.19Sm.17Gd.13Dy.10Ce.04).98((Fe".72Mn.08).90Fe"'.11Al2.08)2.99Si3O12(OH).98. White films are later formed kimuraite-(Y) with formula ... |
| © Pavel M. Kartashov | Photo ID: 70497 View Count: 269 |
Allanite-(Y) : {CaY}{Al2Fe2+}[O|OH|SiO4|Si2O7], Kimuraite-(Y) : Ca(Y,Nd)2[CO3]4 · 6H2O, Thalénite-(Y) : Y3Si3O10(OH) | |
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Åskagen (Torskebäcken), Filipstad, Värmland, Sweden 7 mm thick black zone of allanite-(Y) divide yellowish massive thalenite-(Y) (lower part of the photo) from microcline (upper part of the photo). Such allanite contain up to 5.5 wt.% of Y2O3 and have formula Ca.99(Y.35Nd.19Sm.17Gd.13Dy.10Ce.04).98((Fe".72Mn.08).90Fe"'.11Al2.08)2.99Si3O12(OH).98. White films are later formed kimuraite-(Y) with ... |
| © Pavel M. Kartashov | Photo ID: 70498 View Count: 249 |
Allanite-(Y) : {CaY}{Al2Fe2+}[O|OH|SiO4|Si2O7] | |
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Eas a Bradain, Luib, Isle of Skye, North West Highlands (Inverness-shire), Scotland, UK 1mm tabular crystal. Collected 2001, from the Glas Bhienn Mhor granite. |
| © Steve Rust | Photo ID: 16765 View Count: 747 |
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