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Lepidocrocite & Segnitite

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PAV912360

Lepidocrocite & Segnitite

Classic Locality

Description Tabs

Description
Locality: 
Lagoa Mine, Estorãos, Ponte de Lima, Viana do Castelo District, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 1.2 × 1.4 cm
Description

Segnitite crystals covered (not replaced, underneath they are intact) by a layer of tiny spheroidal lepidocrocite. On the top of these, we have lepidocrocite in different sizes and shapes.
EDS and PXRD analyzed.

Collected: 
2018
Boxed with Label
Mineral Data
What's on the rock

Lepidocrocite

Formula: 
γ-Fe3+O(OH)
Strunz: 
4.FE.15
Crystal System: 
Orthorhombic
Hardness: 
5.0
Streak: 
Orange
Type Locality: 
Zlaté Hory (Zuckmantel), Olomouc Region, Moravia (Mähren; Maehren), Czech Republic

Segnitite

Formula: 
PbFe3+3(AsO4)2(OH,H2O)6
Strunz: 
8.BL.10
Crystal System: 
Trigonal
Hardness: 
4.0
Type Locality: 
Kintore opencut, Broken Hill, Yancowinna Co., New South Wales, Australia