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Cordylite-(Ce) & Manganoneptunite

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SYM163042

Cordylite-(Ce) & Manganoneptunite

Rare Mineral

Description Tabs

Description
Locality: 
Demix-Varennes Quarry, Varennes & St-Amable, Montérégie, Québec, Canada
Size Range: 
Small cabinet (7-10 cm)
Size: 
9 × 4 × 3 cm
Description

Many stacked green cordylite-ce crystals and minor astrophyllite. On the back side there is a sharp red crystal of mangan-neptunite.

Mineral Data
What's on the rock

Cordylite-(Ce)

Formula: 
NaBaCe2(CO3)4F
Strunz: 
5.BD.05
Hardness: 
4.5
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland

Manganoneptunite

Formula: 
Na2KLi(Mn2+,Fe2+)2Ti2[Si8O24]
Strunz: 
9.EH.05
Crystal System: 
Monoclinic
Hardness: 
5.0 - 6.0
Colour: 
Red
Type Locality: 
Maly Mannepakhk Mt (Malyi Mannepakhk Mt), Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...