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Strengite & Kidwellite

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BCK664817

Strengite & Kidwellite

Kay Robertson collection
Classic Locality

Description Tabs

Description
Locality: 
Rotläufchen Mine, Waldgirmes, Lahnau, Lahn-Dill, Giessen Region, Hesse, Germany
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.3 × 3.1 × 2.7 cm
Description

You are bidding on a large sample with a fracture surface covered in nice small clusters of strengite with thousands of green balls of kidwellite. Strengite is rare at this old locality and good specimens are hard to find! Kay Robertson collection. 

Mineral Data
What's on the rock

Strengite

Formula: 
FePO4·2H2O
Strunz: 
8.CD.10
Hardness: 
3.5 - 4.0
Streak: 
white
Type Locality: 
Eleonore Mine, Rodheim-Bieber, Wetzlar, Hesse, Germany

Kidwellite

Formula: 
NaFe3+9(PO4)6(OH)11·3H2O
Strunz: 
8.DK.20
Hardness: 
3.0
Streak: 
yellow
Type Locality: 
Fodderstack Mountain, Norman, Montgomery Co., Arkansas, USA

Seller Information

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