Barite toupes on Manganite

white snowball-sized barite crystals on black manganite crystals

AE Seaman Mineral Museum, Michigan Technological University, Houghton Michigan

 

John Biczok's set of Seaman Museum minerals

flic.kr/s/aHskqDGsWa

 

www.museum.mtu.edu/

 

en.wikipedia.org/wiki/A._E._Seaman_Mineral_Museum

Done