Approx Weight (per piece):  25

Dimensions: 36x36x32 mm / 1

Specimen Size:  Miniature Sized

This is a beautiful 21

Quartz and Galena Crystal Cluster | 59 grams | Mogila, Madan, Bulgaria Volcanic Olivine Approx Weight (per piece): 25The LeadZinc deposits of Madan Ore Field (Southwest Rhodopy Mountains) were operated by the Turks in the Middle Ages. Greek coins from Tassos island dating from 14th century AD, have been found in the ancient galleries. As well, the name of the Madan field, which in Turkish means Ore, originates from that time. The Madan Ore Field is built up mainly of the highly crystalline rocks of the lower (Ar) and upper (Pt) metamorphic units which form the Madan