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Hancockite & Axinite-(Mn)

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BCK796270

Hancockite & Axinite-(Mn)

Steven Phillips collection
Type Locality

Description Tabs

Description
Locality: 
Franklin Mine, Franklin, Houghton County, Michigan, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1 × 0.9 cm
Description

You are bidding on a small sample with a nice vug of axinite-Mn tabular crystals with some nice, single, bladed, deep-red hancockite crystals. From the Steven Phillips collection of Franklin District rarities and micromounts. 

Mineral Data
What's on the rock

Hancockite

Variety Of: 

Epidote-(Pb)

Formula: 
{CaPb}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05
Hardness: 
6.0 - 7.0
Formula: 
{CaPb}{Al2(Fe3+,Mn3+)}(Si2O7)(SiO4)O(OH)
Hardness: 
6.0 - 7.0
Streak: 
White
Type Locality: 
Parker Mine (Parker shaft), Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Axinite-(Mn)

Formula: 
Ca2Mn2+Al2BSi4O15(OH)
Strunz: 
9.BD.20
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Harz, Lower Saxony, Germany

Seller Information

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