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Chervetite Francevillite & Curienite

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RSG1169783

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Description
Locality: 
Mounana Mine, Franceville, Haut-Ogooué Province, Gabon
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 2.9 × 2 cm
Description

Outstanding micromount from the famous uranium deposit of Mounana, a world-class locality renowned for rare uranium mineral associations. This specimen displays a rich and visually striking mineral assemblage with numerous well-developed crystals.

The dominant feature consists of spectacular bright orange rosettes of francevillite, formed by clusters of radiating prismatic crystals creating spherical aggregates with exceptional brilliance. These rosettes are well developed and highly luminous, typical of the finest occurrences of this sought-after mineral.

Behind these vibrant crystals occur greyish chervetite crystals, clearly visible and providing a subtle contrast to the intense coloration of the uranium minerals.

The specimen is also abundantly coated with curienite, occurring as bright yellow microcrystalline aggregates covering parts of the matrix and surrounding the francevillite rosettes. These coatings produce a spectacular color contrast between vivid yellow and intense orange tones.

The entire assemblage sits on a dark siliceous matrix supporting numerous crystals distributed across the specimen, giving the piece a dense and highly aesthetic appearance.

This chervetite–francevillite–curienite association from Mounana (Gabon) represents a particularly desirable combination highly sought after by collectors of rare uranium minerals.

A top-quality specimen for the locality, featuring abundant crystallization, spectacular colors, and a classic association from this historic African uranium deposit.

In a box 3.5x4x3.2cm, Labelled

FoV : 3.00mm

Ex J. Valverde

In a package only, no padded letter

Mineral Data
What's on the rock

Chervetite

Formula: 
Pb2(V2O7)
Strunz: 
8.FA.15
Hardness: 
2.0 - 2.5
Type Locality: 
Mounana Mine (Mouana Mine), Franceville, Haut-Ogooué Province, Gabon

Francevillite

Formula: 
(Ba,Pb)(UO2)2(VO4)2·5H2O
Strunz: 
4.HB.15
Hardness: 
3.0
Type Locality: 
Mounana Mine (Mouana Mine), Franceville, Haut-Ogooué Province, Gabon

Curienite

Formula: 
Pb(UO2)2(VO4)2·5H2O
Strunz: 
4.HB.15
Hardness: 
3.0
Type Locality: 
Mounana Mine (Mouana Mine), Franceville, Haut-Ogooué Province, Gabon

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$20
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Start 04 Mar 18:00
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Shipping Information

Postage Area Price
FRANCE
12
EUROPE
20
MONDE / WORLD
40
USA - Packages
40

Seller Information

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Seller's terms and conditions

No refund on the items

When you win an auction, please pay within the end of the month of the auction. If you have not paid by the end of this selling period the item will be relisted or a litigation will be open.

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