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Florencite-(Ce) from Russia

6DG-U74Florencite-(Ce) CeAl3(PO4)2(OH)6 , Florencite-(Nd) NdAl3(PO4)2(OH)6 , Florencite-(Sm) SmAl3(PO4)2(OH)6

01163650017362331776349.jpg
Svodovyi area, Grubependity Lake, Maldynyrd range, Kozhim River Basin, Komi Republic, Russia

Field of View: 1370 μm

Upper left: SEM image on a polished section of Florencite from Svodovyi area, Grubependity Lake, Russia, showing alternating zones of Florencite-(Sm), Florencite-(Nd), and Florencite-(Ce) (Zeiss Ultra, 30kV, SE2 detector, FOV of the SEM image ~460µm).
Lower row: EDS maps of the most prominent REE present in the sample, Ce (left), Nd (middle), Sm(right). EDS-spectra taken for Florencite-(Ce) at the site marked in the respective element map are reproduced in the upper row for energy range 0.4keV - 8.0keV (middle) and in more detail between 3.0keV and 7.0keV (right) (Bruker Xflash 6, 30kV). The latter spectrum shows good agreement between measured and deconvoluted data assuming presence of La, Pr, Nd, Sm, and Gd in addition to dominant Ce.
Photo ID: 1359775     Uploaded by: Matthias Boehringer   Approval date: 2024-03-17   View Count: 115   Approval status: Public galleries    Type: Photo - 2370 x 1165 pixels (2.8 Mpix)

Q97-DHPFlorencite-(Sm) SmAl3(PO4)2(OH)6 , Florencite-(Ce) CeAl3(PO4)2(OH)6 , Florencite-(Nd) NdAl3(PO4)2(OH)6 , Quartz SiO2

Multiple photos available
06194460017272300953666.jpg
Svodovyi area, Grubependity Lake, Maldynyrd range, Kozhim River Basin, Komi Republic, Russia

Dimensions: 6.5 cm x 3.5 cm x 3.5 cm

Pink complex crystal of Florencite-(Ce) - Florencite-(Sm) - Florencite-(Nd) (crust-intermediate zone-core) in white quartz from the type locality of the samarian IMA2009-074. Note that Sm-dominant zone is invisible on the photo, because of it is very narrow and located under surface, inside of the crystal, outer part of which is composed by Florencite-(Ce). This Florencite has very remarkable dichroism - under fluorescent lamps light it has salmon-pink colour, while under incandescent lamps one it is cranberry-pink (see daughter photo). Analytical data also are available on daughter photo. Specimen size is 6.5x3.5x3.5 cm. Specimens of such quality and size can be counted by fingers of one hand. Collected by the author - Svetlana A. Repina. Pavel M. Kartashov collection (#3394) and photo.
Copyright: © Pavel M. Kartashov collection & photo      Photo ID: 290961     Uploaded by: Pavel Kartashov   Approval date: 2010-03-04   View Count: 2353   Approval status: Public galleries    Type: Photo - 960 x 720 pixels (0.7 Mpix)

7WR-3RTFlorencite-(Nd) NdAl3(PO4)2(OH)6 , Florencite-(Ce) CeAl3(PO4)2(OH)6

Annotations available
03621990017770511446502.jpg
Grubependity Lake, Maldynyrd range, Kozhim River Basin, Komi Republic, Russia

Largest Crystal Size: 0.1 mm

Polished section showing typical zonation between Nd, Ce and Sm in florcenite. This particular specimen has thin zones (1,2,3) with florcenite-(Nd) in florcenite-(Ce). Thicker zones which consist of the thin zones of Nd and Ce florcenite are enriched in Sm and Nd. This particular specimen is dominated by florcenite-(Nd)

Photo uploaded courtesy of Carsten Slotta (namesake of Slottaite), with permission from Carsten. This specimen was auctioned by him and is now in a private collection. Photo copyright Carsten Slotta.
Copyright: © Carsten Slotta/Mintreasure.com      Photo ID: 1694919     Uploaded by: Hamza Ilhan Å ito   Approval date: 2026-04-24   View Count: 32   Approval status: Public galleries    Type: Photo - 1250 x 948 pixels (1.2 Mpix)
 
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