Puig de la Banya de Boc volcano

Llorà, Sant Martí de Llémena, Girona, Catalonia, Spain

A pleistocene era volcanic cinder cone from approximately 120,000 years ago.

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The site produces olivine-pyroxene specimens, often known as peridotite, in basalt strombolian projection bombs – they were fired from the volcano and then cooled under the right conditions to form green gemmy crystals.

Mindat lists 8 minerals including olivine and pyroxene group minerals.

 

Further reading

 

 

If you are interested in other classic Spanish locales we may have stock from the following locales.

Spanish locales


Andalusia Aragon Asturias Cantabria Castile-La Mancha Castile and Leon Catalonia Extremadura La Rioja Murcia Navarre Valencia  

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Minerals from Spain