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Prehnite & Epidote

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MGR812263

Prehnite & Epidote

Description Tabs

Description
Locality: 
Sandaré, Arrondissement Sandaré, Cercle de Nioro du Sahel, Kayes Region, Mali
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 3.1 × 2.1 cm
Description

Probably the most aesthetic piece I ever had from the locality. The sphere is 23mm across, complete and undamaged. It shows a very fine quality and excellent translucency without any cracks or inclusions. It is set on a single crystal of Epidote, which is sharp terminated and lustrous all around. There is no repair at all - this is the natural state of the piece - really fantastic, looks great in each angle!

Mineral Data
What's on the rock

Prehnite

Formula: 
Ca2Al2Si3O10(OH)2
Strunz: 
9.DP.20
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Karoo dolerites, Cradock, Chris Hani District, Eastern Cape Province, South Africa

Epidote

Formula: 
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05a
Crystal System: 
Monoclinic
Hardness: 
6.0
Streak: 
Colorless
Type Locality: 
Bourg d'Oisans, Isère, Rhône-Alpes, France...