EXEMPLARY OF MOLYBDENITE. EXTRACTED IN THE MINES OF GUALBA, MONTSENY, BARCELONA. THESE SPECIMENS OF MOLYBDENITE ARE EXCLUSIVE BECAUSE OF THE SMALL QUANTITY THAT WAS EXTRACTED FROM THE MINE (TODAY CLOSED)
Molybdenite is a mineral that has the appearance and touch similar to graphite. It also has lubricating properties that are a consequence of its layered structure.
