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Mattheddleite & Leadhillite

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BCK621412

Mattheddleite & Leadhillite

Rare Mineral

Description Tabs

Description
Locality: 
Thief Gills, Roughton Gill, Caldbeck, Cumbria, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.9 × 0.6 × 0.7 cm
Description

You are bidding on a small sample with several cavities and fracture surfaces lined with thousands of tiny mattheddleite crystals, with thick leadhillite plates and an unknown brown rhombohedral crystal. 

Mineral Data
What's on the rock

Mattheddleite

Formula: 
Pb5(SiO4)1.5(SO4)1.5(Cl,OH)
Strunz: 
9.AH.25
Hardness: 
3.5 - 4.5
Streak: 
white
Type Locality: 
Leadhills, South Lanarkshire, Strathclyde (Lanarkshire), Scotland, UK

Leadhillite

Formula: 
Pb4(CO3)2(SO4)(OH)2
Strunz: 
5.BF.40
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Streak: 
White
Type Locality: 
Susanna Mine (Glennery Scar Vein; Susanna Vein [Scar Vein]; Portobello Vein; Humby Vein; Lead Vein), Leadhills, South Lanarkshire, Strathclyde (Lanarkshire), Scotland, UK

Seller Information

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