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Iimoriite-(Y) & Allanite-(Ce)

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DPJ687809

Iimoriite-(Y) & Allanite-(Ce)

Description Tabs

Description
Locality: 
Trimouns, Luzenac, Ariège, Occitanie, France
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2 × 1.5 cm
Weight: 
10.00gr
Description

crystal of iimoriite-(Y) and allanite-(Ce) on dolomite. Rare for the locality 

Mineral Data
What's on the rock

Iimoriite-(Y)

Formula: 
Y2[SiO4][CO3]
Strunz: 
9.AH.05
Crystal System: 
Triclinic
Hardness: 
5.5 - 6.0
Colour: 
Buff-tan
Streak: 
White
Type Locality: 
Suishoyama pegmatite (Suishouyama; Suisyoyama; Suishyoyama), Iizaka Village (Iisaka), Kawamata, Fukushima Prefecture, Tohoku Region, Honshu Island, Japan

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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 Les minerals Provenant de la et en Micromounts cristalisés Découvertes Principalement Particulier