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RM1686   Mellite and calcite

Csordakúti Mine, Bicske-Zsámbéki Basin, Bicske-Csordakút, Fejér Co., Hungary

Mellita, also called xylocriptite or honeystone, is an organometallic compound. It is an aluminum salt of the melitic acid; that is, an aluminum benzene-hexacarboxylate hydrate with a chemical formula Al2C6(COO)6·16H2O. This is a rare rare secondary mineral in lignite deposits. In this sample we can observe rich facets and transparence. Nice specimen. Fluorescent under SW-UV.

Size: 5.0 x 3.8 x 3.0 cm
Main crystal: 14 x 10 mm.

Fluorescent under short wave UV