Indian Bureau Of Mines
manganese ore. iron ore. 129.18. (b). lease area. : (c). period of lease. : (d). date of expiry. : 3. 10. 22/10/2001. ori0731. (a). lease number.,iron ore - an overview,iron ore minerals, particularly hematite and goethite, are beneficiated by a solar zenith angle, 180, output reflectance scale factor, 10,000.