2016-11-1 (Copper)

A sample of raw copper ore found by the donors dad in Lake Michigan. Often found as distorted masses or extremely distorted crystals. Crystals, which are uncommon, are usually cubic or dodecahedral with modified faces. Octahedral crystals do occur, but are very rare. Also occurs as flattened crystals, scales, dendrites, and wires. This example has a defined crystle structure throught the sample.