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Chevkinite-(Ce) : (Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2[O4|Si2O7]2 | |
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Pumice quarries, Wingertsberg Mt., Niedermendig, Mendig, Laach lake volcanic complex, Eifel Mts, Rhineland-Palatinate, Germany Chevkinite-(Ce) on Rhodonite/Bustamite matrix. Black prismatic crystals with an amphibole-like habit. Confirmed by XRD and SEM-EDS analysis. Ce/La ratio is about 52/48. Field of view 6 mm. Collected in 07/1982, photograph by Stephan Wolfsried. |
| © C.H.M.-Schäfer | Photo ID: 86184 View Count: 386 |
Chevkinite-(Ce) : (Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2[O4|Si2O7]2 | |
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Antanetinilapa (Estatoby), Sahatany Valley, Sahatany Pegmatite Field (Mt Bity (Ibity) area), Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar dimension area mm. 6 x 6 photo and collection Luigi Chiappino |
| © luigi chiappino | Photo ID: 230650 View Count: 29 |
Chevkinite-(Ce) : (Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2[O4|Si2O7]2 | |
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Ambatofinandrahana District, Amoron'i Mania Region, Fianarantsoa Province, Madagascar Size:9x8cm. Blocky crystals of Chevkinite-(Ce), relatively big for the mineral (ex-Tealdi collection). Paul Bongaerts specimen and photograph. |
| © Paul Bongaerts | Photo ID: 57628 View Count: 328 |
Chevkinite-(Ce) : (Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2[O4|Si2O7]2, Aluminocerite-(Ce) : (Ce,La,Ca)9(Al,Fe3+)(SiO4)3[SiO3(OH)]4(OH)3, Allanite-(Ce) : {CaCe}{Al2Fe2+}[O|OH|SiO4|Si2O7], Ferriallanite-(Ce) : {CaCe}{Fe3+AlFe2+}[O|OH|SiO4|Si2O7], Zircon : Zr[SiO4] | |
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Tsakhirin Khuduk Y-Zr-Nb deposit, Khaldzan Buragtag massif, Altai Mts, Hovd Aimag (Khovd Aimag), Mongolia Termination of large broken Chevkinite-(Ce) crystal from rare-metal alkaline pegmatite. Surface of the crystal (the right part of the picture) is altered and overgrown by later brown astrophyllite-like allanite-(Ce), pink crystals of IMA2007-060 (aluminoan cerite), and microscopic hingganites-(Ce) and -(Nd) (unvisible according to their small ... |
| © Pavel M. Kartashov | Photo ID: 210243 View Count: 83 |
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Tsakhirin Khuduk Y-Zr-Nb deposit, Khaldzan Buragtag massif, Altai Mts, Hovd Aimag (Khovd Aimag), Mongolia Prismatic crystals of black Nb-bearing Chevkinite-(Ce) in epidot-quartz metasomatites of the deposit. Largest crystal length is 2 cm. This metasomatite was appear after Ca matasomatic replacement of rare-metal alkaline pegmatite similar to located close to this place Tatyana pegmatite. Olive-green epidote had completely replace microcline ... |
| © Pavel M. Kartashov | Photo ID: 210233 View Count: 59 |
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Tsakhirin Khuduk Y-Zr-Nb deposit, Khaldzan Buragtag massif, Altai Mts, Hovd Aimag (Khovd Aimag), Mongolia Large broken grain of black niobian Chevkinite-(Ce) from rare-metal alkaline pegmatite. Associated minerals are: brown lustrous grain of fergusonite-(Y), pink masses of small crystals of aluminocerite-(Ce) (IMA2007-060), dark-grey veinlets of allanite-(Ce) in quartz. Microscopic hingganites-(Ce), -(Y) and -(Nd) (unvisible according to their small ... |
| © Pavel M. Kartashov | Photo ID: 211075 View Count: 54 |
Chevkinite-(Ce) : (Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2[O4|Si2O7]2 | |
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Midtmoen, Surka, Øståsen - Hadeland, Lunner, Oppland, Norway Field of view 6 mm. Depth of field is achieved with CombineZM. Specimen and photo Leon Hupperichs. |
| © Leon Hupperichs | Photo ID: 88665 View Count: 142 |
Chevkinite-(Ce) : (Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2[O4|Si2O7]2 | |
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Buer, Bjørkedalen, Porsgrunn, Telemark, Norway Crystals sections to 1,5 cm of Chevkinite-(Ce) embedded in Feldspar from Buer, Bjørkedalen, Porsgrunn, Langesundsfjord-area, Norway. Specimen and photo: Knut Eldjarn. |
| © Knut Eldjarn | Photo ID: 155637 View Count: 100 |
Chevkinite-(Ce) : (Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2[O4|Si2O7]2 | |
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Satil, Tangir Valley, Diamar District (Diamir District), Northern Areas, Pakistan Shiny and sharply edged crystals up to 1.7 cms. |
| © Christian Bracke | Photo ID: 82630 View Count: 435 |
Chevkinite-(Ce) : (Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2[O4|Si2O7]2 | |
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Satil, Tangir Valley, Diamar District (Diamir District), Northern Areas, Pakistan Very shiny, well terminated and big Chevkinite-(Ce) crystal from this location which brought most probably the best crystals worldwide. Specimen size: 6.2 x 3.1 x 2.1 cm |
| © Christian Bracke | Photo ID: 54350 View Count: 333 |
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