 | | Journal (article/letter/editorial) | | and hasa lower as a guide to ore at E1 Teniente (Braden), Chile [abs.]: K/Rb ratio relative to the original... and Billings, G. K., 1970,Rubidium: abundance Chile and produceenlargedtargetsfor mineral ex- Heier...weatheringis taking place Considerable amounts of limonite and kaolin are associated with the ore minerals...coppersulfidesand secalteration, southern Atacama desert, Chile: Inst. Mining ondary sulfide enrichment: EcoN. G•...: Ecoa. GEOId., v. 31, p. 331-354. Brouillan, Province of Quebec,Canada: Jour. Geochem. Brown, P. E. |  | | Book | | Orogen . 3 ¢ Radiometric Ages Near El Salvador and Potteriics, Chile . 4 ¢ Section Through Arequipa, Peru...Through Potrerillos, Chile . ; 6 ¢ Potash Index of Igneous Rocks, Atacama Rego Chile : 7 ¢ Michiquillay...Geology (Peru) . 8 © Structure at Chuquicamata, Chile . 9 ¢ Surface Geologic Map, Michiquillay 10 © Surface...Plutonic Belt, ies 27 @ Geology of the Kobuk-Koyukuk Province (Alaska). 28 © Interior Belt (Alaska). 3 ; ,...: tbe ge genes ie a Structure Visible in Gurr at El Nie : Structural Outline at Copper Basin. ; 48 ¢ |  | | Book | | disseminating the information, the mine geologists and mine managers who have made the mine visits a rewarding experience...concentration required to achieve the break-even point for a mine in terms of revenue and costs. Any detailed exploration...epochs. Following Tumeaure (1955), a metallogenic province may be defined as a mineralized area or region...The size of a metallogenic province can be as large as the Superior Province (Canadian Shield) or as small...as the Upper Michigan Peninsula native copper province. Similarly, a metallogenic epoch can be as broad |  | | Book | | used. Where high-grade ore occurs at some depth, a mine shaft may be sunk and drifts (tunnels) run from...setting, which may be referred to as a metallogenic province. The porphyry copper belt in the western part...North and South America is one such well-defined province, as is the sedimentary copper belt in Zambia-Zaire...to meet our needs rather than mine our own resources. Only if we mine U.S. copper will gold production...Oklo uranium mine, Republic of Gabon. This view not only shows a typical small open pit mine, but several |
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