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Goethite Psm Pyromorphite

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CLB536636

Goethite Psm Pyromorphite

Pseudomorph

Description Tabs

Description
Locality: 
Pfingstwiese Mine, Bad Ems, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.3 × 1.6 cm
Description

I was completely astonished by this specimen. I had thought I couldn't be surprised by Bad Ems material anymore. But this kind of pseudomorph/epimorph (perimorph) was completely new to me.

Typical pyromorphite crystals have been covered by goethite and then dissolved, leaving a hollow cast (at least I guess that the 'not opened' goethite pseudomorphs are hollow too). 

It seems that this material might be as rare as the galena pseudomorphs after pyromorphite ('blaubleierz') from Kautenbach. At least I haven't seen another sample before.

Mineral Data
What's on the rock

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany

Pyromorphite

Formula: 
Pb5(PO4)3Cl
Strunz: 
8.BN.05
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Zschopau, Erzgebirge, Saxony, Germany

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