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Labuntsovite-Mn

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BCK656785

Labuntsovite-Mn

William Henderson collection
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 × 3.9 × 1.6 cm
Description

You are bidding on a small sample with dozens of small labuntsovite-Mn crystals in vugs with radial sprays of natrolite. A note on Bill's label says "delhayelite?, upper right, tan". This species isn't known from MSH, and could be another species. 

Mineral Data
What's on the rock

Labuntsovite-Mn

Formula: 
Na4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8·10-12H2O
Strunz: 
9.CE.30e
Hardness: 
6.0
Type Locality: 
Pegmatite No. 19, Kuftn'yun Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

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