Kryzhanovskite

  

Crystals to 0.75 mm of kryzhanovite with minor vivianite and ludlamite on siderite matrix

  

 

  

  

Dark brown or reddish brown fairly lusterous crude orthorhombic dipyramidal crystals to less than 0.3 mm in clusters intimately associated with nice crystals of ludlamite to 3 mm. The white zones are messelite.

Origin: Big Chief mine, Pennington Co., South Dakota, USA

Sample size: 6 x 5 x 4 cm (top), 1 cm x 6 x 5 mm with a 0.7 5mm octahedral, brassy red looking crystal in siderite matrix (2nd row), 6.5 x 5 x 2 cm (3rd/4th/bottom row)

 

  

Siderite matrix with well-formed (hard to tell in photo), octahedral chocolate brown crystals to 1 mm in large vug with green ludlamite crystals to 5 mm. Also sprinkled about the vugs are whitmoreite crystals to less than 0.5 mm, possible eosphorite and phosphoferrite.

Origin: Bull Moose mine, Custer Co., South Dakota, United States

Sample size: 6 x 5 x 4 cm

Photo courtesy of: 

Origin: Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Waidhaus, Vohenstrauß, Oberpfalz, Bavaria, Germany

Picture size: 6 mm

Owner: Thomas Witzke

 

Photo courtesy of: 

  

  

  

  

  

  

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