| 21. | Native copper was an important ore of copper in historic times and was used by pre-historic peoples.
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| 22. | In addition, they used native copper, silver and gold for metalworking, in which they used very advanced methods.
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| 23. | Indians guided missionary Claude Dablon to the Ontonagon Boulder, a 1.5-ton piece of native copper along the Ontonagon River.
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| 24. | Some native silver is found, and it is said that a small amount of native copper is also present.
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| 25. | The copper was discovered in 1843 by a prospector, presumably panning for gold, who found nuggets of native copper.
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| 26. | The Cape was named by French explorers ( Cape of Gold ) because bright native copper deposits appeared golden.
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| 27. | Native copper occurs rarely as isometric cubic and octahedral crystals, but more typically as irregular masses and fracture fillings.
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| 28. | The latter describes a break along a rough, jagged surface; an example of this property is found in native copper.
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| 29. | The central skeleton was accompanied by a fish-dart, a lance-head, and a sheet of hammered native copper near the head.
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| 30. | It is associated with aurichalcite, shattuckite, ajoite and baryte in Arizona, and with quartz, native copper and ajoite in South Africa.
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