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Pleonaste & Fassaite

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Watches:
MNR737600

Pleonaste & Fassaite

ex. Milan Okruhlica collection

Description Tabs

Description
Locality: 
Hodruša-Hámre, Žarnovica County, Banská Bystrica Region, Slovakia (Slovak Republic)
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.2 × 6.8 × 3.4 cm
Description

Black spinels (pleonast) on green fassaite matrix as well as fassaite crystals.

ex.Milan Okruhlica collection

 

Mineral Data
What's on the rock

Pleonaste

Variety Of: 

Spinel

Formula: 
MgAl2O4
Strunz: 
4.BB.05
Hardness: 
7.5 - 8.0
Hardness: 
0.0

Fassaite

Variety Of: 

Augite

Formula: 
(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Strunz: 
9.DA.15
Hardness: 
5.5 - 6.0
Hardness: 
0.0