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Senegalite On Turquoise

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RHT798618

Senegalite On Turquoise

Hu Hühne expedition 2007, Lapis magazine 11/2007
Type Locality

Description Tabs

Description
Locality: 
Kourou Diakouma Mountain, Falémé River basin, Tambacounda Region, Senegal
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 3 × 2.8 cm
Weight: 
46.00gr
Description

Very nice senegalite specimen from the type locality. Yellow-green crystals on a thin crust of pale blue turquoise.

Senegalite is  a rare aluminium phosphate, only known from four localities.

Mineral Data
What's on the rock

Senegalite

Formula: 
Al2(PO4)(OH)(OH)2·H2O
Strunz: 
8.DE.05
Hardness: 
5.5
Type Locality: 
Mount Kourou Diakouma (Kouroudiako), Saraya, Falémé River basin, Tambacounda Region, Senegal

Turquoise

Formula: 
Cu(Al,Fe3+)6(PO4)4(OH)8·4H2O
Strunz: 
8.DD.15
Crystal System: 
Triclinic
Hardness: 
5.0 - 6.0
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