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Girvasite

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JYJ582728

Girvasite

SEM-EDS & P-XRD analysed
Rare Mineral

Description Tabs

Description
Locality: 
Cerro Mejillones, Mejillones Peninsula, Antofagasta Province, Antofagasta Region, Chile
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.7 × 1.2 cm
Description

SEM-EDS and P-XRD analysed girvasite occuring as white filigrane spheres closely associated with also analytical confirmed bakhchisaraitsevite crystals. Colourless hollow patterns in  rhombs are a silicate mineral (not visible on photos). 

Second locality after the Kovdor massif in completely different mineral assemblage. 

Very rare, analysis attached in the correspoding section

Mineral Data
What's on the rock

Girvasite

Formula: 
NaCa2Mg3(PO4)2(H2PO4)(CO3)(OH)2·4H2O
Strunz: 
8.DO.05
Hardness: 
3.5
Type Locality: 
Kovdor Zheleznyi Mine (Iron Mine), Kovdor Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...
Analysis
Analysis Report - only: Girvasite
Analysis Report - only: Girvasite