BENEFICIATION OF MANQ-ANESE ORES. - By-Michael V Healey. OBJECT. The purpose. ot. this investigation is to study the. means. ... known as manganiferous iron ores. Also certain manganiferous silver ares are mined primarily for their silver value.-4-Uses ofManganese. Between. 90. and. 95. Technical paper abstract Ironstone Resources Ltd. is developing the Clear Hills oolitic iron ore deposit in northwest Alberta, Canada. Sources of oolitic iron ore worldwide are abundant and ubiquitous, but there is currently no commercial technology to extract iron from oolitic iron ores.