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Caysichite-(Y)

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SKY1056416

Caysichite-(Y)

Rare Mineral

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Description
Locality: 
Evans-Lou Mine, Lac Saint-Pierre, Val-des-Monts, Outaouais, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2 × 1.7 cm
Description

White crystal aggregates of the extremely rare Er-Yb mineral caysichite-(Y) from the type locality for the mineral in Canada.

Caysichite-(Y) has the particularity of being the ONLY MINERAL from more than 6046 minerals known with the very rare chemical element Erbium in its chemical composition!! (source Mindat after a search of IMA approved Erbium minerals).

In addition , it is an Ytterbium mineral. Only 6 Yb minerals exist after a total of 6046 IMA approved mineral species !!.

IMA approved Formula: (Ca,Yb,Er)4Y4(Si8O20)(CO3)6(OH) · 7H2O

Don't miss the opportunity to get this extreme rarity and chemical oddity !

Ex Vandenbroucke Museum collection from Waregem, Belgium.

Mineral Data
What's on the rock

Caysichite-(Y)

Formula: 
Ca2Y2Si4O10(CO3)3·4H2O
Strunz: 
9.DJ.15
Hardness: 
4.5
Type Locality: 
Evans-Lou Mine, Lac Saint-Pierre (Wakefield Lake), Val-des-Monts, Les Collines-de-l'Outaouais RCM, Outaouais, Québec, Canada...

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Start 01 Jul 18:00
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