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Sérandite Manganoneptunite & Petarasite

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BCK673612

Sérandite Manganoneptunite & Petarasite

Type Locality

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 4.2 × 2.7 cm
Description

You are bidding on a very rich small miniature sample covered on both side with hundreds of small prismatic serandite crystals, sharp singles and twins of manganoneptunite and dozens of tiny pink petarasite crystals. There are also catapleiite and epididymite crystals present. Very rich and exceptionals under the scope. 

Mineral Data
What's on the rock

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

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...

Petarasite

Formula: 
Na5Zr2(Si6O18)(Cl,OH)·2H2O
Strunz: 
9.CJ.40
Hardness: 
5.0 - 5.5
Type Locality: 
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Seller Information

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