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Pharmacosiderite & Whitmoreite

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SER687148

Pharmacosiderite & Whitmoreite

Description Tabs

Description
Locality: 
Sapucaia Mine, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.1 × 1.5 × 0.9 cm
Description

Green tetrahedra of pharmacosiderite with golden needles of whitmoreite and pale pink balls of strengite

Mineral Data
What's on the rock

Pharmacosiderite

Formula: 
KFe3+4(AsO4)3(OH)4·6-7H2O
Strunz: 
8.DK.10
Hardness: 
2.5
Streak: 
white
Type Locality: 
Carharrack Mine, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK

Whitmoreite

Formula: 
Fe2+Fe3+2(PO4)2(OH)2·4H2O
Strunz: 
8.DC.15
Hardness: 
3.0
Type Locality: 
Palermo No. 1 Mine (Palermo No. 1 pegmatite; Hartford Mine; GE Mine), Groton, Grafton Co., New Hampshire, USA