Silicates[22 from 152] Arfvedsonite Prismatic black crustal    
 
            
                     
            
            The name, a brief visual description:
            Arfvedsonite
            Prismatic black crustal
            Sample size:
            Crystal. 3,2x 1,8x1,6 cm. 0,022kg.
            Place of sampling:
            Grinite array Czahirin- Hudug, West Mongolia
                     
        