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Olshanskyite On Magnetite With Johnbaumite

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PMN687471

Olshanskyite On Magnetite With Johnbaumite

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: 
5.5 × 6.5 × 5 cm
Largest Crystal: 
4.00cm
Weight: 
143.00gr
Description

Combination specimen with good olshanskyite on magnetite and a small amount johnbaumite crystals ( up to 3mm) on the disctinctive matrix consisting of a mix green andradite and white johnbaumite. From the 2017 find that re-defined the standard for roweite, olshanskyite and johnbaumite.
We do combine shipping - just let us know!

 

Mineral Data
What's on the rock

Olshanskyite

Formula: 
Ca3[B(OH)4]4(OH)2
Strunz: 
6.CA.55
Hardness: 
4.0
Type Locality: 
Titovskoe B deposit, Tas-Khayakhtakh Range, Dogdo River Basin, Polar Yakutia, Sakha Republic (Saha Republic; Yakutia), Eastern-Siberian Region, Russia

Magnetite

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

Johnbaumite

Formula: 
Ca5(AsO4)3OH
Strunz: 
8.BN.05
Hardness: 
4.5
Streak: 
White
Type Locality: 
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA