This copper crystal is from the Itauz Mine, Zhilandy group, Satpayev, Karaganda Region, Kazakhstan. This locale is mined for the recovery of copper and copper ores and is well known for its quality collector specimens. This crystal is a spinel twin and it has well defined features. It is a good sized crystal for the locale. It measures approximately1 11/16 x 3/4 x 7/16 inches or 42 x 19 x 11 mm.