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Cahnite Roweite Magnetite & Andradite

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PMN756602

Cahnite Roweite Magnetite & Andradite

Description Tabs

Description
Locality: 
Shijiangshan Mine, Hexigten Banner, Chifeng City, Inner Mongolia, China (Peoples Republic)
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
5 × 8.5 × 5 cm
Largest Crystal: 
1.00cm
Weight: 
280.00gr
Description

This location is the only location in the world where combination specimens like this have been found - and it seems to have been a limited occurance as well. this specimen shows cahnite / johnbaumite (white) on orange/brown roweite (a borate that has never before been seen in crystals) on andradite with magnetite making it a relatively heavy specimen. 

Mineral Data
What's on the rock

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

Roweite

Formula: 
Ca2Mn2+2B4O7(OH)6
Strunz: 
6.DA.25
Hardness: 
5.0
Type Locality: 
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Magnetite

Formula: 
Fe2+Fe3+2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
5.5 - 6.5
Streak: 
Black

Andradite

Formula: 
Ca3Fe3+2(SiO4)3
Strunz: 
9.AD.25
Crystal System: 
Isometric
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Drammen, Buskerud, Norway