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Parsonsite

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RSG1171423

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Description
Locality: 
Lachaux, Puy-Guillaume, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2 × 3.5 × 2.2 cm
Description

Covering the dark matrix, an abundant crystallization of parsonsite forms radiating sprays of honey-yellow to golden tabular crystals.

The crystals are elongated and bladed, commonly arranged in diverging sprays and fan-like aggregates that intergrow to create a dense and visually striking structure. Their variable transparency and vitreous to pearly luster highlight fine striations visible on some crystal faces.

The richness of the crystallization is remarkable: numerous well-developed crystals densely cover the specimen, producing a highly dynamic appearance typical of the best occurrences from this locality.

The uranium deposit of Lachaux is a classic French locality for parsonsite, where this lead-uranium phosphate can form beautiful yellow bladed aggregates within cavities of the host rock.

This specimen represents a particularly rich and impressive example illustrating the characteristic habit of the mineral.

In a box 3.5x4cm, labelled

FoV : 3.2mm

Ex Coll J. Valverde

Mineral Data
What's on the rock

Parsonsite

Formula: 
Pb2(UO2)(PO4)2·2H2O
Strunz: 
8.EA.10
Hardness: 
2.5 - 3.0
Type Locality: 
Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)

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Start 11 Mar 18:00
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Shipping Information

Postage Area Price
FRANCE
6
EUROPE
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MONDE / WORLD
10
USA - Packages
40

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