2.05" Translucent Sphalerite Crystals on Druzy Quartz - China

Here is a beautiful 2.05" wide sphalerite var. cleiophane and druzy quartz crystal association, collected from the Shuikoushan ore field of China.

Cleiophane is a variety of sphalerite with a low iron and Manganese content. It typically forms orange-yellowish or greenish crystals.
Sphalerite is a part of the sulfides group and typically exhibits a grey/black appearance due to high concentrations of impurities. When sphalerite is in it's purest state, the chemical composition is ZnS, and can display a gemmy transparent light tan/yellow color. This is one of the few minerals that can form crystals ranging anywhere between gemmy and transparent to opaque and metallic-like. Opaque or cloudy sphalerite tends to be most abundant, due to the ease of iron replacing zinc in the process of formation.

Silicon Dioxide, also known as SiO2 or Quartz, is the second most abundant mineral in the Earth's crust. Quartz crystals generally grow in silica-rich, hot watery solutions called hydrothermal environments, at temperatures between 100°C and 450°C, and usually under very high pressure. Quartz veins are formed when open fissures are filled with hot water during the closing stages of mountains forming, and can be hundreds of millions of years old.

Sphalerite var Cleiophane & Quartz
Shuikoushan Ore Field, China
2.05" wide