QUARTZ SPHALERITE CLUSTER
A rustic Quartz Sphalerite Cluster for the collection. This specimen has a few dings but is an interesting specimen with its Sphalerite, Galena and Chalcopyrite inclusions. Many small Sphalerite crystals are ‘sprinkled’ among the quartz crystals, some on or inside the quartz. The Galena appears with the Sphalerite in a couple of different forms. One photo shows how what may initially appear as a Galena crystal is actually translucent green Sphalerite. This is Cleiophane and note the crystal has been backlit to show the colour. A great piece!
12cm x 9.5cm x 5cm, 445g.
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).
Quartz is the most common mineral found on the surface of the Earth. A significant component of many igneous, metamorphic and sedimentary rocks.