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Olshanskyite Roweite Magnetite & Johnbaumite On Andradite

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PMN698399

Olshanskyite Roweite Magnetite & Johnbaumite On Andradite

Description Tabs

Description
Locality: 
Shijiangshan Mine, Hexigten Banner, Chifeng City, Inner Mongolia, China (Peoples Republic)
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
3 × 6.5 × 3 cm
Largest Crystal: 
1.00cm
Weight: 
64.00gr
Description

A complex combination specimen of the now famous find in Inner Mongolia - it features small clusters of orange roweite and patches of good olshanskyite with crevices with the other minerals the find is famous for such as johnbaumite (white) and cahnite on the typical andradite (green) matrix. There is a lot to discover with a microscope as well, but it is notable as a good olshanskyite with roweite specimen without magnification. You'll also find magnetite on the piece. No damage. From the 2018 finds.

We are happy to combine shipping or stockpile until it makes sense to ship due to shipping price. We only charge actual shipping costs.

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

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

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

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