Manganite

  

This is a specimen of both manganite and pyrolusite. The term varvicit is used to describe this as a mixture of the two minerals. Essentially there are crystals of manganite with soft pyrolusite filling the gaps between crystals.

Origin: Ilfeld, nr. Nordhausen, Thuringa, Germany

Sample size: 6.2 x 4.5 x 2.8 cm

 

  

Manganite on calcite

Origin: Bolet Mine, Vastergotland, Sweden

Sample size: 9.5 x 9 x 5.5 cm

 

Photo courtesy of: 

Trinityminerals.com

 

  

Origin: Ilfeld, Harz Mts., Germany

Sample size: 3.3 x 1.3 x 0.6 cm

 

  

Origin: N'Chwaning Mine, Kuruman, South Africa

Sample size: 2.8 x 2.5 x 1.5 cm

 

  

 

  

Origin: Ilfeld, Harz Mountains, Germany

Sample size: 7.5 x 3.25 x 1.5 cm (top), 6 x 5.5 x 4.5 cm (2nd/bottom row)

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  

Origin: Aguila, Arizona, U.S.A.

Sample size: 33 x 20 x 12 mm

 

  

Manganite on quartz

Origin: Albany Co., Wyoming, U.S.A.

Ex. Don Belsher collection

Sample size: 6.3 x 3.9 x 3.4 cm

 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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