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Wilhelmgümbelite & Phosphophyllite

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CR844336

Wilhelmgümbelite & Phosphophyllite

New Mineral type

Description Tabs

Description
Locality: 
Hagendorf South Pegmatite, Bavaria, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 1.8 × 1.2 cm
Description

Wilhelmgümbelite is a brandnew mineral from the famous Hagendorf Pegmatite. Wilhelmgümbelite is related to schoonerite - an oxidized form of schoonerite with Mn2+ largely replaced by Fe3+.

Wilhelmgümbelite shows yellow-brown lathlike crystals intergrown in phosphophyllite.

Without analytic it is not possible to differ between the minerals of the "schoonerite group".

This specimen has been EDS confirmed.

Mineral Data
What's on the rock

Wilhelmgümbelite

Formula: 
ZnFe2+Fe3+3(PO4)3(OH)4(H2O)5·2H2O
Crystal System: 
Orthorhombic
Colour: 
Light yellow-brown to orange-red
Type Locality: 
Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Hagendorf, Waidhaus, Upper Palatinate, Bavaria, Germany

Phosphophyllite

Formula: 
Zn2Fe(PO4)2·4H2O
Strunz: 
8.CA.40
Crystal System: 
Monoclinic Prismatic crystals, often twinned
Hardness: 
3.0 - 3.5
Type Locality: 
Hagendorf North Pegmatite (Meixner Feldspar Pit), Hagendorf, Waidhaus, Upper Palatinate, Bavaria, Germany
Analysis
Analysis Report - only: Wilhelmgümbelite & Phosphophyllite
Analysis Report - only: Wilhelmgümbelite & Phosphophyllite