Volkovskite is a very rare species found in Panel 848, Boulby Mine, North Yorkshire. The rich specimen we have from the David Green collection shows a translucent pearly fan shaped cleavage of this rare complex mineral. The outer surface of the specimen has crystals of translucent orange Hilgardite, to around 4mm. There are believed to have been very few specimens of Volkovskite found from this occurrence.