| 31. | This iron ore was previously mined between 1967 and 1974, and consists of haematite with some goethite and limonite.
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| 32. | "' Silicate type "'( or saprolite type ) nickel ore formed beneath the limonite zone.
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| 33. | Nickel content is higher in the saprolite zone although cobalt is an important by-product of the limonite horizon.
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| 34. | Calcareous siltstone is also present, along with minerals quartz, feldspar, muscovite, limonite, hematite and pyrite.
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| 35. | In another example the deeply weathered iron formations of Brazil served to concentrate gold with the limonite of the resulting soils.
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| 36. | This combination of iron oxide with water forms a resulting chemical compound called mineral limonite, which has a brown color.
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| 37. | Arppe was awarded a permission to build two furnaces in V�rtsil?for limonite processing, four power hammers and a workshop.
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| 38. | During the mid-to-late 19th century there was considerable iron-ore related mining and smelting of Limonite ore.
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| 39. | These ferric hydroxides commonly include goethite ( FeO-OH ) and so-called " amorphous ferric hydroxide " or limonite.
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| 40. | Fibrous blue-green rosasite crystals are usually found in globular aggregates, often associated with red limonite and other colorful minerals.
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