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Homogenous set of cleophane green blende and galena extracted from the Madan mine in Bulgaria (year 90).
Stone dimensions: L: 63mm x W: 29mm x H: 74mm x weight with base: 188g.
The stone is presented on the bevelled acrylic base.
Specific details of these minerals:
- Galena: This is the main ore of lead (PbS). Galena is a lead sulphide and is often associated with silver ores.
- Green blende (or sphalerite) : Green blende, better known as sphalerite, is the main zinc ore (ZnS). It also contains iron.
- Cleophane: This is a transparent variety of sphalerite, also used for zinc extraction. The term cleophane refers to the purity and clarity of this variety of sphalerite.