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Robertsite & Kryzhanovskite

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RSG955552

Robertsite & Kryzhanovskite

Description Tabs

Description
Locality: 
Mrirat Pegmatite, Sidi Bou Othmane, Rehamna Province, Marrakesh-Safi Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 2.5 × 2.5 cm
Description

Black crystals of robertsite along some beige Kryzhanovskite.

In a box 2.8x2.8cm, labelled

FoV : 3.8mm

Mineral Data
What's on the rock

Robertsite

Formula: 
Ca3Mn3+4(PO4)3O2·3H2O
Strunz: 
8.DH.30
Hardness: 
3.5
Streak: 
Red-brown
Type Locality: 
Tip Top Mine (Tip Top pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USA

Kryzhanovskite

Formula: 
(Fe3+,Mn2+)3(PO4)2(OH,H2O)3
Strunz: 
8.CC.05
Hardness: 
3.5 - 4.0
Type Locality: 
Ak-Kezen' pegmatite, Belogorskii Town, Kalba Range, Eastern Kazakhstan Province (Shyghys Qazaqstan Oblysy; Vostochno-Kazakhstanskaya Oblast'), Kazakhstan...

Seller Information

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