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Allanite-(Ce) - Dissakisite-(Ce)

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SMM871050

Allanite-(Ce) - Dissakisite-(Ce)

Classic Locality

Description Tabs

Description
Locality: 
Trimouns, Luzenac, Ariège, Occitanie, France
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 5.5 × 3 cm
Largest Crystal: 
1.10cm
Description

Wonderful miniature. A brown, vitreous, well finished 11.00 mm allanite-(Ce) / dissakisite-(Ce)  crystal, stands straight on the matrix with a nice group of small calcite crystals alongside.
Exceptional sample for the beauty and uncommon size of the crystal. From a classic French locality.  Also perfect for display in showcase.

"Personal Selection"

Boxed with Label
Mineral Data
What's on the rock

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

Dissakisite-(Ce)

Formula: 
{CaCe}{Al2Mg}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Hardness: 
6.5 - 7.0
Type Locality: 
Balchen Mt, Sør Rondane Mts, Queen Maud Land (Dronning Maud Land), Eastern Antarctica, Antarctica

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