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 - Hübnerite, Cassiterite
 
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 - Quartz and oxides
 
Large lustrous black hübnerite to 61 mm long with overgrowth on rear of transparent colorless quartz crystals to 7 mm and microcrystals of mica. There are several sharp, lustrous, stubby, black crystals of cassiterite beautifully oriented and intergrown in hübnerite crystal.
    
                
                                 China
                
                
                
                                 Yaogangxian Mine, Hunan Prov.
                
                
         6,1x3,6x2,2 cm
         90.5g
    


                
                
                






