“A plate of Calcite crystals 18 cm by 12 cm. The specimen fluoresces various colours under shortwave light. Its highly likely that there are other minerals in the specimen beyond Calcite. The specimen also reacts under longwave light as well. Even though in the photo it appears the crystals are sheered off, the face of the plate of Calcite crystals is virtually complete. ”
Jeff Collens - 9th July 2018