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Roweite On Andradite With Cahnite

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PMN756600

Roweite On Andradite With Cahnite

Description Tabs

Description
Locality: 
Shijiangshan Mine, Hexigten Banner, Chifeng City, Inner Mongolia, China (Peoples Republic)
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 2.5 cm
Largest Crystal: 
1.30cm
Weight: 
35.00gr
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 a mix of cahnite / johnbaumite (white) on orange/brown roweite (a borate that has never before been seen in crystals). To add interest, the matrix actually consists of bright green and brown andradite. This piece sits up by itself without support to show all these rare minerals. An excellent specimen! From a find made in 2017.

Mineral Data
What's on the rock

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

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

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