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Baotite: Ba4(Ti,Nb)8Si4O28Cl
Comments: Brown masses of crystalline baotite in white quartz matrix. Location: Inner Mongolia, Autonomous Region, China. Scale: Picture size 2 cm. © Tom Loomis / Dakota Matrix
Baotite: Ba4(Ti,Nb)8Si4O28Cl Columbite-(Fe): Fe++Nb2O6
Comments: Minute brown crystalline grains of baotite in dark ferrocolumbite (columbite-(Fe)). Location: Sheep Creek, Ravalli County, Montana. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species