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Corkite & Plumbogummite

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MNR759934

Corkite & Plumbogummite

Rare Mineral

Description Tabs

Description
Locality: 
Cercal, Santiago do Cacém, Setúbal District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 2.5 × 1.7 cm
Description

Very rich specimen of well formed brown-orange corkite crystals in association with plumbogummite.

Beautiful sample.

 

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