7 results about "Andalusite" patented technology

Andalusite is an aluminium nesosilicate mineral with the chemical formula Al₂SiO₅. This mineral was called andalousite by Delamétehrie, who thought it came from Andalusia. It soon became clear that it was a locality error, and that the specimens studied were actually from El Cardoso de la Sierra, in the province of Guadalajara, not Andalusia.