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Bassetite & Schoepite

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JYJ548008

Bassetite & Schoepite

Description Tabs

Description
Locality: 
Arcu su Linnarbu, Capoterra, Cagliari Province, Sardinia, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3 × 1.5 cm
Description

This specimen hosts filigrane needles which are formed out of platy crystals at high magnification, as you can see in corresponding section. The EDS analysis confirms bassetite. the yellow spheres are schoepite aggregates. On the top there is a large area hosting phosphuranylite and sabugalite. This locality has a widespread uranium mineralisation where analytical investigation is needed to distinguish between the minerals. 

Mineral Data
What's on the rock

Bassetite

Formula: 
Fe2+(UO2)2(PO4)2·8H2O
Strunz: 
8.EB.10
Crystal System: 
Monoclinic
Hardness: 
2.5
Type Locality: 
Wheal Basset, Basset Mines, Carn Brea, Camborne - Redruth - St Day District, Cornwall, England, UK
Isostructural with: 
Autunite
Nováčekite-II
Saléeite

Schoepite

Formula: 
(UO2)8O2(OH)12·12H2O
Strunz: 
4.GA.05
Hardness: 
2.5
Streak: 
Yellow
Type Locality: 
Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)
Analysis
Analysis Report - only: Bassetite & Schoepite
Analysis Report - only: Bassetite & Schoepite
Analysis Report - only: Bassetite & Schoepite