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Fiemmeite

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GFM1044616

Fiemmeite

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Description
Locality: 
Passo di Costalunga, Welschnofen, South Tirol, Trentino-Alto Adige, Italy
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.8 × 0.6 × 0.2 cm
Description

Fiemmeite is probably the rarest of 5 Copper Oxalates known to date. It forms aggregates of small pale blue long-prismatic crystals on a black Coal matrix. All known samples were found in a small piece of fossilized wood of few centimeter in size.

Mineral Data
What's on the rock

Fiemmeite

Formula: 
Cu2(C2O4)(OH)2·2H2O
Crystal System: 
Monoclinic
Colour: 
Sky blue
Streak: 
Pale blue
Type Locality: 
Val Gardena Sandstone exposure near San Lugano pass, Fiemme Valley, Trento Province, Trentino-Alto Adige, Italy