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Bastnäsite-(Ce) & Allanite-(Ce)

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SMM691361

Bastnäsite-(Ce) & Allanite-(Ce)

Description Tabs

Description
Locality: 
Trimouns, Luzenac, Ariège, Occitanie, France
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 1.5 × 1 cm
Description

The head of an allanite-(Ce) crystal of 5.0 mm, rests on a group of 10.0 mm hexagonal-tabular, pink, bastnäsite-(Ce) crystals that is wedged on a portion of milky quartz crystal. Intriguing.

Boxed with Label
Mineral Data
What's on the rock

Bastnäsite-(Ce)

Formula: 
(Ce,La)(CO3)F
Strunz: 
5.BD.20a
Crystal System: 
Hexagonal
Hardness: 
4.0 - 4.5
Type Locality: 
Bastnäs mines, Riddarhyttan, Skinnskatteberg, Västmanland, Sweden

Allanite-(Ce)

Formula: 
{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Type Locality: 
Qáqarssuatsiaq, Aluk Island, Kap Farvel, Kujalleq, Greenland

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