A superb specimen of Quartz Sphalerite crystals. Clusters of Sphalerite sit atop terminated milky Quartz crystals! This is a super specimen for any collector of minerals, metals or quartz. A very aesthetic specimen from a sought after locale.
Borieva Mine, Madan, Bulgaria
12cm x 11cm x 5cm, 927g
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 Cleophane) to orange and red shades (known as Ruby Blende), but as iron content increases it forms dark, opaque metallic crystals (known as Marmatite).
Quartz, Silicon Dioxide:
One of the most common minerals found in the Earth’s crust. If pure, quartz forms colourless, transparent and very hard crystals with a glass-like luster. Quartz is a significant component of many igneous, metamorphic and sedimentary rocks. Silicon dioxide is found in a wide range of varieties and colours. Quartz in its polished form, was the most advanced technology thousands of years ago.