GALENA SPHALERITE CRYSTALS
An interesting little specimen of Galena Sphalerite Crystals. The Galena appears in perfect crystal form, a triangle look for a cubic form element. Add great looking Sphalerite Crystals for a super piece! Recognisably Bulgarian in form and association.
4.3cm x 1.9cm x 3.1cm, 43g.
Madan ore fields, Bulgaria.
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.
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).