Native copper definition

Native copper means copper in its elemental form.

Native copper means copper in its elemental form. The bill applies to a mining operation to excavate or remove earth material that generates not less than 10,000 tons and not more than 75,000 tons of waste rock in a calendar year or disturbs not less than 1 acre and not more than 10 acres of land in a calendar year.

Examples of Native copper in a sentence

• Native copper, although sparse, occurs primarily as a coating on joint surfaces in the ore.

• Native copper mineralisation whilst soft, has metallurgical recoveries of 55 to 65% and consequently these deposits were not considered in the initial development plan.

• Ranking of the Long Term Adaptive Management Plan Alternatives44 List of Figures Figure 1 - Native copper and silver mines along the Keweenaw Peninsula and the amounts of discharged tailings from coastline “stamp” mills 01 Figure 2 - Stamp Sands deposit near Gay, MI 01 Figure 3 - Above-water and underwater extent of the Stamp Sand tailings in Grand Traverse Bay, a small bay off Keweenaw Bay.

• The stamps crushed the amygdaloid and conglomerate ores, Figure 1 Native copper and silver mines along the Keweenaw Peninsula and theamounts of discharged tailings from coastline “stamp” mills.and mills sluiced approximately one half billion tons ofcopper-rich mine tailings that were dumped along rivers, waterways, lakes, and the Lake Superior shores of the Keweenaw Peninsula region.

• Native copper, silver, and gold accessible to early metallurgists.

• Copper Cu Native copper was reported already in mid-19th century at Horní Slavkov as coatings or dendritic aggregates ob- served in cavities of ore veins (Krejčí 1855).During the present study, three genetically distinct types of copper have been distinguished.

• Levine MA (1999) Native copper in the Northeast: An overview of potential sources available to indigenous peoples.

• Megascopic study and identification of the following minerals: Native copper, sulphur, graphite, chalcopyrite, bomite, galena, sphalerite, pyrrhotite, cinnabar, chromite, realgar, orpiment, stibnite, pyrite, cobaltite, marcasite, molybdenite, cuprite, zincite and important non-silicate minerals.

• Figure 2: Native copper sample recovered from adjacent to the Discovery Zone in 1994.

• Native copper was intersected in several holes at the McLean Well Prospect, part of the Auris JV, and further work is required to determine the significance.