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Jahnsite-(CaFeMg) Hureaulite & Rockbridgeite

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SER707832

Jahnsite-(CaFeMg) Hureaulite & Rockbridgeite

Description Tabs

Description
Locality: 
Lagoa do Andres, Picuí, Borborema Province, Paraiba, Brazil
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4.5 × 2.6 cm
Description

in a pegmatite fragment some vugs filled with black rokbridgeite crystals hosting light brown jahnsite and pink lustrous hureaulite; self collected on 2016

Mineral Data
What's on the rock

Jahnsite-(CaFeMg)

Formula: 
CaFe2+Mg2Fe3+2(PO4)4(OH)2·8H2O
Hardness: 
0.0
Type Locality: 
Tom's quarry (Tom's Phosphate quarry; Clutterbuck Bros; PM 315; Sobey; BHP; ML 4993), Kapunda, North Mt Lofty Ranges, Mt Lofty Ranges, South Australia, Australia...

Hureaulite

Formula: 
(Mn,Fe)5(PO4)2(HPO4)2·4H2O
Strunz: 
8.CB.10
Hardness: 
5.0
Type Locality: 
Les Hureaux, Saint-Sylvestre, Haute-Vienne, Limousin, France

Rockbridgeite

Formula: 
Fe2+Fe3+4(PO4)3(OH)5
Strunz: 
8.BC.10
Crystal System: 
Orthorhombic
Hardness: 
3.5 - 4.5
Type Locality: 
Midvale Mine, South Mountain, Midvale, Rockbridge Co., Virginia, USA