Jensenite

Small green crystals of jensenite
Origin: Centennial Eureka Mine, Eureka, Tintic District, Juab Co., Utah, USA
Picture size: 1.2 mm
Owner: Thomas Witzke
 

Photo courtesy of: 

Thomas Witzke

Institut für Mineralogie und Lagerstättenlehre
Aachen, Germany

 

  
This specimen has a micro crystal to perhaps 0.25mm tucked away deep in a quartz lined vug
  
There are at least 8 crystals to about 0.2 mm in this sugary siliceous matrix. The crystals are deep emerald green, reflective, indicating good crystal faces. This is a portion of the Type Specimen and was microprobe confirmed. Also associated are platy yellow leisingite to maybe 0.75 mm.
Origin: Centennial Eureka mine, Juab Co., Utah, United States (type locality)
Sample size: 6 x 3 x 2 cm (top), 3 x 2 x 2 cm (bottom)
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

Back to Alphabetical list Physical, chemical and crystallographic description Optical properties/Thin sections SEM images TEM images vibrational spectra description IR spectra Raman spectra N-IR spectra F-IR spectra IES spectra