SPHALERITE GALENA CRYSTALS
A superb combination of Sphalerite Galena Crystals. This is a top specimen that beautifully displays both crystal shapes in one amazing collectible piece. You will be hard pressed to find a better quality piece than this and we will miss seeing it in the cabinet. Even non-collectors admire pieces of this rarity and it would bring any collection up a notch. Museum quality, it looks even better in person. RocknCrystals specialise in metal specimens from Australia and around the World.
9cm x 5.4cm x 2.8cm 187g.
Borieva Mine, Madan, Bulgaria.
Sphalerite, also known as Blende or Zinc Blende, is the major ore of zinc. When pure (with little or no iron) it forms clear crystals with colours ranging from pale yellow (known as Cleiophane) to orange and red shades (known as Ruby Blende), but as iron content increases it forms dark, opaque metallic crystals (known as Marmatite).
Galena is the primary ore mineral of lead. Worked for its lead content as early as 3000 BC, it is found in ore veins with sphalerite, pyrite, chalcopyrite, tennantite-tetrahedrite, etc. and in skarns, as well as in sedimentary rocks where it may replace carbonate beds or be deposited in pore spaces. The crystals are bright when fresh but often tarnish after exposure to air.