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SAND PROPERTIESHardness: 2-7Composition: KAlSi3O8、NaAlSi3O8,CaAl2Si2O8,Special quality: most commonPlace of origin: east ChinaFunctional use: Manufactured sand is also called artificial sand, which was produced by crush the cobble stone or other stone into sand by
IRON ORE PROPERTIESHardness: 6Composition:SiO2 Al2O3 Fe2O3 K2O Na2OSpecial quality: most commonPlace of origin: east ChinaFunctional use: In terms of industry or commerce, iron ore is different from manganese ore and it should not
FELDSPAR PROPERTIESHardness: 6.5Composition: CaCO3 SiO2Special quality: man-madePlace of origin: ChinaFunctional use: As a material of glass making, feldspar is also used as ceramics industry raw materials, this part takes 30% of the whole
