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Manganoneptunite Sérandite & Leifite

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SYM828760

Manganoneptunite Sérandite & Leifite

Rare Mineral

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3 × 1.7 cm
Description

Deep red manganoneptunite crystals on serandite with clear leifite crystals. 

Mineral Data
What's on the rock

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...

Sérandite

Formula: 
Na(Mn2+,Ca)2(HSi3O9)
Strunz: 
9.DG.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Rouma Island (Roume Island; Roma Island; Ruma Island), Los Archipelago (Los Islands), Guinea

Leifite

Formula: 
(Na,H2O)Na6[Be2Al2(Al,Si)Si15O39]F2
Strunz: 
9.EH.25
Hardness: 
6.0
Colour: 
Colorless
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland