Andalucite. The Andalucite was studied for the first time by Werner, from specimens from Spain. Both this mineralogist and Delamétherie believed that the specimens came from Andalusia, so the latter gave the mineral the name it now bears. However, it seems that the specimens they studied came from El Cardoso (Guadalajara), a town that they assumed was located in Andalusia. It is a polymorph with two other gemstones: Kyanite and Sillimanite
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