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Thorbastnasite Rontgenite-(Ce) Image

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 Thorbastnasite, Rontgenite-(Ce)

Large Thorbastnasite Image

Mineral: Thorbastnasite: Th(Ca,Ce)(CO3)2F2ยท3(H2O)  
Rontgenite-(Ce): Ca2(Ce,La)3(CO3)5F3
Comments: Tny white, acicular thorbastnasite crystals to less than 1 mm in sprays. The thorbastnasite forms the cores the 'needles', with white epitaxial rontgenite-(Ce) coating.
Location: Mont Saint-Hilaire, Quebec, Canada.
Scale: Needle Size < 1 mm.
Copyright: © William Lechner / Dakota Matrix
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