Francevillite

 
 
 
Francevillite with curienite
 
 
 
Origin: Mounana, Haut-Ogoue, Gabon
Owner: Lou Perloff
Microscopic image
 

Photo courtesy of: 

Lou Perloff

Photo-Atlas of Minerals

 

  
 
  
 
  
 
  
Origin: Pandora mine, San Juan Co., Utah, U.S.A.
Sample size: 5 x 4 x 3 cm covered with hundreds of  less than 0.25 mm crystals (top), 7 x 4 x 3 cm (2nd row), 4.5 x 2 x 1 cm (3rd row), 9 x 6 x 2 cm (bottom)
 
  
Origin: Carbon Co., Pennsylvania, United States
Sample size: 5 x 3.5 x 2 cm, crystals to 0.1 mm
 
  
The Francevillite is in orange, spherical aggregates, and the curienite is a bright yellow crust on the francevillite.
Origin: Mounana Mine Haut-Ogoue, Gabon
Sample size: 9 x 8 x 6 mm and 6 x 4 x 2 mm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

Page 2     Page 3

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