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Corkite & Plumbogummite On Goethite

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CLB212196

Corkite & Plumbogummite On Goethite

Description Tabs

Description
Locality: 
Serra da Mina Mine, Cercal, Santiago do Cacém, Setúbal District, Portugal
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 4.4 × 4 cm
Description

Lustrous greenish corkite crystals and more yellowish crusts of plumbogummite on dark brown goethite matrix (pseudomorph after baryte?). Sprayed with colorless, transparent cerussite (not analyzed).

Mineral Data
What's on the rock

Corkite

Formula: 
PbFe3(PO4)(SO4)(OH)6
Strunz: 
8.BL.05
Hardness: 
3.5 - 4.5
Type Locality: 
Glandore Mine (Aghatubrid Mine; Glendore Mine), Glandore, Co. Cork, Ireland

Plumbogummite

Formula: 
PbAl3(PO4)2(OH)5·H2O
Strunz: 
8.BL.10
Hardness: 
4.0 - 5.0
Type Locality: 
Huelgoat (Locmaria-Berrien), Finistère, Brittany, France

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany

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