Polyakovite-(Ce) Image
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Polyakovite-(Ce)
Mineral:
Polyakovite-(Ce)
:
(Ce,La,Nd,Pr,Ca)4(Mg,Fe++)(Cr,Fe+++)2(Ti,Nb)2Si4O22
Comments:
Black, pitchy, polyakovite-(Ce) crystal showing conchoidal surfaces so typical for this mineral. Green fluororichterite overgrowth is just visible. Measured radioactivity is 146µR/h.
Location:
Pit No. 97 (N97 Mine), Ilmen Natural Reserve, Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia.
Scale:
Specimen size is 4.5x3x2.5 cm.
Copyright:
©
Pavel M. Kartashov
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