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Kastningite & Rittmannite

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BCK516183

Kastningite & Rittmannite

Classic Locality

Description Tabs

Description
Locality: 
Foote Mine, Cleveland County, North Carolina, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.9 × 1.3 × 1.2 cm
Description

You are bidding on a small specimen with a vug hosting very good crystals of rare kastningite with yellow sprays of rittmannite. 

Mineral Data
What's on the rock

Kastningite

Formula: 
(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2·8H2O
Strunz: 
8.DC.30
Crystal System: 
Triclinic
Hardness: 
1.0 - 2.0
Streak: 
White
Type Locality: 
Silbergrube, Waidhaus, Upper Palatinate, Bavaria, Germany

Rittmannite

Formula: 
{(Mn2+,Ca)}{Mn2+}{(Fe2+,Mn2+,Mg)2}{(Al,Fe3+)2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
3.5
Type Locality: 
Cubos-Mesquitela-Mangualde area, Mangualde, Viseu District, Portugal

Seller Information

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