Yanomamite

Pale green crust of small yanomamite crystals with scorodite, cassiterite, topaz and quartz in greisen matrix
Origin: Mangabeira Tin Deposit, Monte Alegre, Goias, Brazil
Sample size: thumbnail
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

  
As light greenish waxy coatings in vuggy matrix
Origin: Mangabeira Tin Mine, Monte Alegre, Goiás, Brazil (type locality)
Sample size: 3 x 3.5 x 3 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

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