Robertsite

Robertsite (black) on montgomeryite (pink)
Robertsite (black) on montgomeryite
Robertsite on whitlockite
Robertsite and carbonate-hydroxylapatite
Origin: Tip Top mine, Custer, Custer Co., South Dakota, U.S.A.
Owner: Lou Perloff
Microscopic image
 

Photo courtesy of: 

Lou Perloff

Photo-Atlas of Minerals

 

  
Brown microcrystals of robertsite with whitlockite
Origin: Tip Top Mine, Custer Co., South Dakota, United States
Sample size: 13 x 7 x 4 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

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