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Pyromorphite & Plumbogummite With Phosphohedyphane On Quartz

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RHT710205

Pyromorphite & Plumbogummite With Phosphohedyphane On Quartz

ex collection Peter Schöning
Classic Locality

Description Tabs

Description
Locality: 
Roughton Gill Mine, Roughton Gill, Caldbeck, Cumbria, United Kingdom
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.2 × 5.7 × 2.8 cm
Weight: 
146.00gr
Description

A great British classic. Dozens of moss-green, barrel-shaped pyromorphite crystals, tightly packed on the front, grey plumbogummite-phosphohedyphane crystals (an unique mix - analysed!) on the back and thin crusts on pyromorphite crystals on the side and a bit on the front. Weird hollow shapes at the side show another generation of pyromorphite - a cast after ...?

Not only a very good esthetic classic, but also very interesting. Hard to find something comparable ...

Was sold to us and listed in the last auction with the locality 'Wheal Alfred', which proved to be impossible. We had the gray material analyzed. The result was a mix of plumbogummite and phosphohedyphane - quite unique, but both minerals are present in Roughton Gill. So, we're pretty sure we got this specimen's locality right now. However: there's never a 100% guarantee.

Mineral Data
What's on the rock

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

Plumbogummite

Formula: 
PbAl3(PO4)2(OH)5·H2O
Strunz: 
8.BL.10
Hardness: 
4.0 - 5.0
Type Locality: 
Huelgoat (Locmaria-Berrien), Finistère, Brittany, France

Phosphohedyphane

Formula: 
Ca2Pb3(PO4)3Cl
Strunz: 
8.BN.05
Hardness: 
4.0
Streak: 
White
Type Locality: 
Capitana Mine, Copiapó Province, Atacama Region, Chile

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

Rockhunter does not sell by size or weight. Sizes and weights given are just for the basic orientation of the buyer and shipment planning and might not be exact, even though we're always trying to be as exact as possible.

Photos might show the item in an enlarged or reduced dimension. Please refer to the given sizes. Please note that all photos have been adjusted – e.g., trimmed to show a certain aspect/a detail, colours adjusted, contrasts highlighted etc. to give the customer an optimal impression, while we try to stay as close to the natural appearance as possible. If it shows that photos cannot depict the natural appearance correctly, we will usually mention this (e.g., all Dioptase photos will never show the rich colour and lustre of the mineral). However, the colours on other photos might be a little off too. Also, computer screens might show colours differently.

We assume that the buyer has a basic knowledge of minerals and, on the one hand, has informed himself about possible toxicity and is aware of dangers in handling them. On the other hand, he must also have informed himself about how certain minerals are to be handled and stored – e.g., about resistance to cleaning agents and solvents, sensitivity to light and the like. Rockhunter accepts no liability whatsoever for injuries, health consequences and incorrect treatment of any kind.

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