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Berthierine & Ancylite-(Ce) & Aegirine

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SYM170377

Berthierine & Ancylite-(Ce) & Aegirine

Rare Mineral

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.2 × 4 × 2 cm
Description

Barrel shaped berthierine crystals on aegirine with may sprays of ancylite crystals.

Mineral Data
What's on the rock

Berthierine

Formula: 
(Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4
Strunz: 
9.ED.15
Crystal System: 
Monoclinic, Hexagonal
Hardness: 
2.5
Type Locality: 
Hayange, Meurthe-et-Moselle, Lorraine, France

Ancylite-(Ce)

Formula: 
SrCe(CO3)2(OH)·H2O
Strunz: 
5.DC.05
Crystal System: 
Orthorhombic
Hardness: 
4.0 - 4.5
Streak: 
White
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland

Aegirine

Formula: 
NaFe3+Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.25
Crystal System: 
Monoclinic
Hardness: 
6.0
Type Locality: 
Rundemyr, Øvre Eiker, Buskerud, Norway
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