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Varennesite & Nenadkevichite

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CHP852196

Varennesite & Nenadkevichite

Classic Locality

Description Tabs

Description
Locality: 
Demix-Varennes Quarry, Varennes & St-Amable, Montérégie, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.2 × 1 cm
Description

specimen with some nice colourless crystals of nenadkevichite with associate crystalline light brown varennesite from the type and only locality.

c. 2269

Mineral Data
What's on the rock

Varennesite

Formula: 
Na8Mn2Si10O25(OH,Cl)2·12H2O
Strunz: 
9.EE.50
Crystal System: 
Orthorhombic
Hardness: 
4.0
Streak: 
White
Type Locality: 
Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada

Nenadkevichite

Formula: 
(Na,◻)8Nb4(Si4O12)2(O,OH)4·
Strunz: 
9.CE.30a
Hardness: 
5.0
Type Locality: 
Natrolite Stock (Pegmatite No. 61), Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

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