| 21. | Such examples include biotite-rich zones, amphibolite-calcite-scapolite alteration and other unusual skarn assemblages.
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| 22. | However, these manto deposits are analogous to skarn deposits, and in some cases terminology may be misused.
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| 23. | Typical skarn minerals include pyroxene, garnet, idocrase, wollastonite, actinolite, magnetite or hematite, and epidote.
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| 24. | This alteration gives rise to wollastonite and pyroxene-containing skarn depending on the distance from the magma chamber walls.
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| 25. | It produced some mineral veins with lead, silver, zinc, copper and tin-tungsten skarn at Kara.
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| 26. | The gems form in sedimentary residual gem deposits, eluvial deposits, metamorphic deposits, skarn and calcium-rich rocks.
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| 27. | Some magnetite skarn and hydrothermal deposits have been worked in the past as high-grade iron ore deposits requiring little beneficiation.
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| 28. | Skarn mineralisation, which often contains magnetite, can also be detected though the ore minerals themselves would be non-magnetic.
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| 29. | Canavesite is a secondary mineral that occurs due to the weathering of ludwigite-magnetite skarn on the surface of mine walls.
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| 30. | Samples taken within Clifton Mining's skarn system have values in excess of 0.3 oz . / ton gold.
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