Sinkankasite

Origin: Barker mine, Keystone, Pennington Co., South Dakota, U.S.A. (type locality)

Owner: Lou Perloff

Microscopic image

 

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Photo-Atlas of Minerals

  

 

  

Very vuggy specimen with several pockets of white to clear, acicular radial sprays of sinkankasite to 2 mm associated with white fluellite crystals

  

Origin: Barker mine, near Keystone, Pennington Co., South Dakota, U.S.A. (type locality)

Sample size: 4 x 3 x 2 cm, crystal smaller than 1 mm (top), 6 x 5 x 4 cm (2nd row), 5 x 3 x 3 cm (bottom)

 

  

White acucular crystals to 1 mm in vug quartz

  

This specimen contains several magnificant white radial sprays to 2 mm associated with light pink hureaulite along a quartz/triphylite contact. The specimen is from the late Bill Roberts' collection, who named it after the late John Sinkankas.

Ex. Roberts, Ex Sinkankas Collection

  

White acicular crystals to 1 mm in small 4mm vug associated with spheroidal, light lavender strengite and vivianite.

  

White, long bladed crystals in radial patern to about 1mm nicely exposed in vug with probably hureaulite.

Origin: Barker - Ferguson mine, Pennington Co., South Dakota, United States (type locality)

Sample size: 3 x 1.5 x1.5 cm (top), 9 x 7 x 3 cm (2nd row), 5 x 4 x 3 cm (3rd row), 5.5 x 4 x 3 cm (bottom)

 

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This specimen of quartz has a vug filled with acicular crystals of sinkankasite and scattered crystals of barbosalite.

  

This specimen of quartz is exceptionally rich in acicular crystalline sprays of sinkankasite to 0.5 cm across!

Origin: Barker-Ferguson, Pennington Co., South Dakota, USA (type locality)
Ex - Chris Korpi Collection

Sample size: 10 x 7 x 5 cm (top/2nd row), 10.5 x 7.5 x 7 cm (3rd/bottom row)

 

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