Dolomite

Origin: Eugui quarries, Cantera Azkarate, Navarre (Navarra; Nafarroa), Spain

Sample size: 4.5 x 3.6 x 2.5 cm

 

  

Dolomite on pale purple amethyst

Origin: Valenciana Mine, Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico

Sample size: 4.8 x 5.2 x 2.2 cm

 

  

Sparkling colorless crystals of calcite to 5 mm in size scattered nicely about a matrix coated by micro colorless dolomite crystals. 

Origin: Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia

Sample size: 5.5 x 4.5 x 3.5 cm

 

  

matrix covered by a sugary coating of colourless micro crystalline quartz. Scattered nicely about this matrix are pale pink saddle shape dolomite crystals to 6 mm in size.

Origin: Rush, Rush Creek district, Marion Co., Arkansas, U.S.A.

Sample size: 7.5 x 6.5 x 4 cm

 

  

Origin: Walker Quarry, Saint Catherines, Niagara Region, Ontario, Canada

Sample size: 9.7 x 5.8 x 4.5 cm

 

  

Dolomite with minor marcasite

Origin: Nanisivik Mine, Nanisivik, Baffin Island, Nunavut Territory, Canada

Sample size: 9.5 x 8 x 6.5 cm

 

 

Dan Weinrich

Dealer in fine mineral specimens

John Veevaert, Trinity Mineral Co

Trinityminerals.com