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RM2918   Willemite

Can Rovira quarry, Sant Fost de Campsentelles, Barcelona, Catalunya, Spain

The Sant Fost willemite appears in small crystals with a pseudohexagonal prismatic habit (twinned), with striated faces. All of them are sub-millimetric in size and form druses of crystals with a resinous or adamantine luster, with colors ranging from dark brown to honey-yellow, or they may appear colorless and transparent. In Sant Fost the willemite appears associated to a sphalerite vein together with silicates (quartz and clays), calcite, fluorite, and baryte. Willemite is fluorescent under SW-UV light. Very unusual locality for the species.


Size: 3.8 x 1.7 x 0.9 cm.
Found in 2021.

Con análisis / With analytical report
Fluorescent under short wave UV


 

RM2917   Surite with cerussite and fluorite

Can Rovira quarry, Sant Fost de Campsentelles, Barcelona, Catalunya, Spain

This is one of the few samples obtained in our last studies in this quarry. We saw a mica-like platy crystals, with a pearly luster and hexagonal form. The results of the different analytical techniques indicated that it was surite (SEM-EDS, EPMA, XRD, Raman). It is accompanied by cerussite, fluorite (purple), baryte and galena.
Surite is a very rare species based on a cerussite-like layer intercalated with a 2:1 layer of smectite. Can Rovira is the second locality in Europe and one of the few localities worldwide.


Size: 3.9 x 3.7 x 2.5 cm.
Found in ±2020.

Analyzed specimen with report


 
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