Jahnsite

 

Jahnsite with mitridatite

Jahnsite on hureaulite

 

Jahnsite on whitlockite

Origin: Tip Top mine, Custer, Custer Co., South Dakota, U.S.A.

Owner: Lou Perloff

Microscopic image

 

 

Jahnsite on whitlockite

Origin: Big Chief mine, Keystone, Pennington Co., South Dakota, U.S.A.

Owner: Lou Perloff

Microscopic image

 

Jahnsite with rockbridgeite (black)

Origin: Sapucaia, Minas Gerais, Brazil

Owner: Lou Perloff

Microscopic image

 

Origin: Mangualde, Beira Alta, Portugal

Owner: Lou Perloff

Microscopic image

 

Photo courtesy of: 

Photo-Atlas of Minerals

  

Amber brown striated crystals to 2 mm with good coverage across face. These are very nice and very distinct crystals. Associated with mitridatite and fairfieldite-messelite. Quartz matrix.

Origin: Tip Top mine, Custer Co., South Dakota, United States (type locality)
Ex. Grenier Collection

Sample size: 7 x 5 x 3 cm

 

Photo courtesy of: 

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