This specimen, 15 cm across, contains wedge shaped calcite (CaCO3) crystals on brown sphalerite (ZnS). The sample comes from an unknown location in Missouri.
Location
USA ▹ Missouri
Photographer
Twyla Baker. 2001-06-11.
Collection
University of North Dakota Mineralogy Collection #4011.
Key words
Calcite, Sphalerite
Tech details
977 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.