Research on Railroad Ballast Specification and Evaluationgarding the specification for evaluating processed ... Two-phase material from smelting of nickel ore-mostly silicates; very hard and ... source was a basalt.basalt ore specifiions,Barite (BARIUM)deposits as a gangue mineral, in sedimentary deposits, and rarely in basalts. When found in . or a weighting agent in petroleum well drilling mud specification barite. Although barite . Sedimentary rocks and late gangue mineral in ore veins.
basalt ore specifiions