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Giniite & Whiteite

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SER637147

Giniite & Whiteite

Description Tabs

Description
Locality: 
Sandamap Pegmatite, Sandamap North Farm 115, Dâures, Erongo Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.8 × 1.7 cm
Description

Some very tiny, platy giniite crystals with minor, brown whiteite

Mineral Data
What's on the rock

Giniite

Formula: 
Fe2+Fe3+4(PO4)3(OH)5·2H2O
Strunz: 
8.DB.50
Hardness: 
3.0 - 4.0
Type Locality: 
Sandamap pegmatite (Sandamab pegmatite), Sandamap North Farm 115 (Sandamab), Usakos, Karibib District, Erongo Region, Namibia

Whiteite

Synonym Of: 

Whiteite-(CaFeMg)

Formula: 
{Ca}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0

Whiteite-(CaMnMg)

Formula: 
{Ca}{Mn2+}{Mg2}{Al2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
3.5

Whiteite-(MnFeMg)

Formula: 
{(Mn2+,Ca)}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0