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Laurionite Nealite & Barstowite

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CR959026

Laurionite Nealite & Barstowite

Description Tabs

Description
Locality: 
Mazarrón, Murcia, Spain
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 3 × 1.5 cm
Description

Very rich and good specimen of lustrous and gemmy Laurionite crystals with a hexagonal Penfieldite crystal, a yellow spray of Nealite and a white barstowite spray in vugs of an ancient slag.

Beautiful specimen.

Mineral Data
What's on the rock

Laurionite

Formula: 
PbCl(OH)
Strunz: 
3.DC.05
Hardness: 
3.0 - 3.5
Type Locality: 
Lavrion District Mines, Lavrion District (Laurion; Laurium), Attikí Prefecture (Attica; Attika), Greece

Nealite

Formula: 
Pb4Fe2+(As3+O3)2Cl4·2H2O
Strunz: 
4.JD.05
Hardness: 
4.0
Type Locality: 
Lavrion District slag localities, Lavrion District (Laurion; Laurium), Attikí Prefecture (Attica; Attika), Greece

Barstowite

Formula: 
Pb4Cl6(CO3)·H2O
Strunz: 
3.DC.95
Crystal System: 
Monoclinic
Hardness: 
3.0
Streak: 
White
Type Locality: 
Bounds Cliff, St Endellion, Wadebridge District, Cornwall, England, UK