Bertrandite

  

 

  

Thin violet colored crystal of fluorapatite nearly 100% covered with gemmy crystals of bertrandite. The largest bertrandite crystal is 3.5 mm across

Origin: Governador Valadares, Minas Gerais, Brazil

Sample size: 4.5 x 2.6 cm (top/middle), 3 x 1.5 cm (bottom)

 

  

  

Peach coloured bertrandite with pyrite and muscovite

Origin: Kounrad nr. Balkhash, Karaganda Oblast', Kazakhstan

Sample size: 5.5 x 5 x 3 cm

 

  

This specimen of crystalline quartz has several scattered steeply angled rhombahedral crystals of rhodochrosite and numerous scattered sprays of milky white bertrandite. The largest rhodochrosite is 1.5 cm across and the largest crystal of bertrandite is just under 1 cm in length.

Origin: Akchatan, Karaganda Oblast, Kazakhstan

Sample size: 5.8 x 4 x 2.7 cm

 

  

This cluster of fully terminated quartz crystals has numerous blocky crystals of bertrandite to 0.8 cm in length.

Origin: Kara Oba, Karaganda Oblast, Kazakhstan

Sample size: 5.2 x 4.5 x 3.5 cm

 

Photo courtesy of: 

Trinityminerals.com

 

  

Origin: Golconda Mine, Gov. Valadares, Minas Gerais, Brazil

Ex. Marty Zinn collection

Sample size: 5.3 x 4.1 x 2.7 cm

 

  

  

Bertrandite on smoky quartz

Origin: Akchatau, Karaganda Oblast, Kazakhstan

Ex. Mark Mauthner collection

Sample size: 3.5 x 2.2 x 1.9 cm

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  

  

Bertrandite with rhodochrosite and sphalerite

Origin:  Kara-Oba W deposit, Betpakdala Desert (Bet-Pak-Dal Desert), Qaraghandy Oblysy (Karaganda Oblast'), Kazakhstan

Ex. Scott and Ann Williams collection

Sample size: 4.1 x 2.3 x 3.3 cm

 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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