WebOct 21, 2005 · 3 ) and significantly higher P-wave velocity ( Δ V P ∼ 1.0–1.5 km/s) than the dioritic host rocks. The seismic surveys used 0.6- to 0.9-kg shallow dynamite sources, … WebDec 31, 2024 · Porphyry Cu deposits in China contain a total resource of ~47 million tonnes (Mt) Cu at average grades rangingmostly from 0.2 to 0.7% Cu (most Approximately 50% …
Mineralized Granitic Porphyry of the Yangla Copper Deposit
WebFind many great new & used options and get the best deals for 194 Rare Rainbows Porphyry Copper Ore &Siderite Iron ore Mineral Speimen/China at the best online prices at eBay! Free shipping for many products! WebJul 6, 2024 · Indeed, porphyry Cu deposits define two distinct trends on a Cu versus Au endowment plot, suggesting that porphyry deposits are either Au-rich (Au/Cu ∼ 80 × 10 −6) or Au-poor (Au/Cu ∼ 4 × ... list of western bahr el ghazal tribes
The Largest Copper Mines in the World by Capacity - Elements by …
WebReference information. Li, Zeng and others (2011) report an average Pt grade 1.34 ppb, Pd, 4.95 ppb; Chen and others (2008) report 6,400 t of Mo at 0.004% Mo, 29 t of Au at 0.18 g/t … WebPorphyry deposits are the dominant sources of copper and major sources of several base and precious metals. They are commonly formed via the repeated emplacement of hydrous magmas and associated fluid exsolution. As a result, mineralized hydrothermal veins may undergo multiple deposition and reopening processes that are not fully accounted for by … WebTRANSITION TO TOPS OF PORPHYRY DEPOSITS: POTENTIAL FOR PORPHYRY CU-AU DISCOVERY IN PERU Jeffrey W. Hedenquist Hedenquist Consulting, Inc. 160 George Street, Suite 2501 Ottawa, K1N9M2 Canada INTRODUCTION Most of the significant porphyry copper deposits in Peru that are now mines or in advanced stages of development are … list of west coast states in usa