Biotite

  
 
     
Biotite pseudomorph after tourmaline
Origin: Willow Springs, Oracle, Pinal County, Arizona, U.S.A.
Ex. Don Belsher collection
Sample size: 3.8 x 1.6 x 1.4 cm (top), 3.5 x 1.6 x 1.2 cm (bottom)
 
  
  
Origin: Spruce Pine District, North Carolina, U.S.A.
Ex. George Elling collection
Sample size: 6.0 x 5.0 x 3.8 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
  
Origin: Bear Lake Diggings, near Gooderham, Ontario, Canada
Sample size: 4.5 x 5 x 7.3 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

Back to Page 1

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