An small new find with with dark green bluish quartz crystals was found in the famous Panasqueira Mines during late 2013.
Panasqueira is well known for its superb colorless and trasparent quartz crystals (See article about the Panasqueira Mines in the Mineralogical Record Vol.45, 1 by Jordi Fabre and Carles Curto).
Well crystallized inclusions are not rare (see photo below) but coloured crystals are a novelty from this mine. At the moment it is not known which mineral causes this nice green bluish colour.
The collected specimens are associated with two different generations of what it seems to be calcite. Some of them present colorless apatite crystals and very minor sulfides.
Juan Fernandez Buelga