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Heliophyllite

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CR622097

Heliophyllite

Rare Mineral

Description Tabs

Description
Locality: 
Lavrion District Mines, Attiki Prefecture, Greece
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 5 × 3 cm
Description

Beautiful yellow lenticular heliophyllite crystals in numerous vugs of the  slag matrix. 

Very rich !

Mineral Data
What's on the rock

Heliophyllite

Formula: 
Pb6As2O7Cl4
Strunz: 
3/D.10-110
Crystal System: 
Orthorhombic
Hardness: 
2
Type Locality: 
Långban, Filipstad, Värmland, Sweden
Dimorph Of: 

Ecdemite

Formula: 
Pb6Cl4(As2O7)
Strunz: 
3.DC.65
Hardness: 
2.5 - 3.0