WebThe .gov means it’s official. Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site. WebMay 28, 2014 · Grasberg is the world’s largest gold mine and second-largest copper mine. It was originally discovered by geologists looking for the source of the rich alluvial gold deposits in the lowlands of Irian Jaya. Between 1990 and 2024, the Grasberg district produced 33 billion pounds of copper and 53 million ounces of gold.
Azucar Prepares to Drill Significant New Porphyry Lithocap
WebSee the latest wildfire information for the Porphyry Fire near . This is a large wildfire that has burned 2,930 acres since August 12, 2024. More information is available on the Fire, … WebEmergency Fire Area Closure, August 18 , 2024 Porphyry Fire Wildfire Closures – 8/18/2024. The South Fork is open for floating the river through the fire area - stopping or camping … early help referral form stockton
Discovery about how porphyry-type copper deposits form could be …
WebJan 1, 2024 · In porphyry copper systems, advanced argillic alteration forms from the near-surface to about 1.5 km depth (e.g., Dilles and John, 2024) and has been termed the lithocap environment that lies ... WebSee the latest wildfire information for the 2024 Porphyry Peak Fire near . This fire burned an unknown number of acres since July 29, 2024 and is considered out. More information is … WebMar 1, 2024 · Plagioclase compositions in the porphyry intrusions are consistent with magmatic H 2 O contents of ~7 wt %. Copper sulfides in the high-grade phyllic alteration zones at Tuwu are characterized by elevated δ 65 Cu values consistent with deposits from oxidized and hydrous magmatic-hydrothermal fluids, whereas lower δ 65 Cu values and … early help referral form middlesbrough