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Groutite & Cahnite

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BCK796282

Groutite & Cahnite

Steven Phillips collection
Type Locality

Description Tabs

Description
Locality: 
Franklin Mine, Franklin, Sussex County, New Jersey, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.4 × 0.8 × 0.5 cm
Description

You are bidding on a small sample with rich needles of groutite growing on and with a very large, but unfortunately incomplete cahnite crystal from Franklin. From the Steven Phillips collection of Franklin District rarities and micromounts. 

Mineral Data
What's on the rock

Groutite

Formula: 
Mn3+O(OH)
Strunz: 
4.FD.10
Hardness: 
3.5 - 4.0
Type Locality: 
Sagamore Mangan No. 2 pit, Ironton, Cuyuna North Range, Crow Wing Co., Minnesota, USA

Cahnite

Formula: 
Ca2[B(OH)4](AsO4)
Strunz: 
6.AC.70
Hardness: 
3.0
Streak: 
White
Type Locality: 
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Seller Information

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