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What is sulfide mining

  • Copper Mining and Extraction Sulfide Ores

    Mining Metals. Metals are often found as compounds in ores. An ore is a rock or mineral that has enough metal in it to make it worth extracting. Mining copper About 200 years ago the UK was an important world source of copper and tin and there were mines in Cornwall and Devon.

  • Concerns Over Sulfide Mining Resurface With Tiffany's Bill

    Sep 20, 2017· Sulfide mining is one of the ways we get metals such as copper, gold, silver and zinc. Tons of rock loaded with the metallic minerals are crushed and processed to extract the valuable metals. But that rock is also loaded with other minerals called …

  • Well-regulated sulfide mining can be done effectively

    Jan 27, 2014· Well-regulated sulfide mining can be done effectively. An example of an effective sulfide mine is the smaller Flambeau Mine at Ladysmith, Wis. By Rolf Westgard. Jan. 27, 2014.

  • Sulfide mineral - Wikipedia

    The sulfide minerals are a class of minerals containing sulfide (S 2−) or persulfide (S 22−) as the major anion. Some sulfide minerals are economically important as metal ores. The sulfide class also includes the selenides, the tellurides, the arsenides, the antimonides, …

  • Sulfide Minerals - an overview ScienceDirect Topics

    Mining and Pollution. When iron sulfide minerals are exposed to the atmosphere and water, the water becomes acid and enriched in iron that eventually leaves yellow and reddish deposits in its wake. Other metal sulfides also react with the atmosphere and water to release toxic metals such as arsenic, cadmium, cobalt, copper, nickel, and zinc.

  • Save the Boundary Waters Environment Minnesota

    Sulfide mines cause acid mine drainage, which could leach into the Boundary Waters watershed, threatening these pristine waters with sulfuric acid, heavy metals, increased mercury levels and other toxic pollution. The Boundary Waters are too important to put at risk of this dangerous mining pollution.

  • Science Desk: How Sulfide-Ore Copper Mines Pollute Save

    May 08, 2015· Sulfide-ore copper mining is a risky type of mining that has never been done before in Minnesota. No matter the method, sulfide-ore copper mines proposed near the Boundary Waters would extract trace amounts of metals from large volumes of rock. Rock is blasted from pit walls and sorted into metal-bearing ore and waste rock.

  • Great Lakes Mining

    Mining for copper, nickel and other heavy metals is often referred to as “sulfide mining,” because these metals are found bonded to sulfur in sulfide ores. Mining proposals in the region would produce millions of tons of waste rock containing sulfides, which when exposed to air and moisture will generate sulfuric acid that can leach into

  • Reader's View: Sulfide mines and wilderness don’t mix

    May 01, 2021· However, it’s disheartening to know that the pristine waterways and watersheds of the Boundary Waters, Voyageurs National Park, and beyond are at risk due to sulfide-ore copper mining …

  • What's Next for PolyMet, Minnesota's First Permitted

    If sulfide mining, the most polluting industry in the country, comes to Minnesota, the state doesn’t have the laws or safeguards in place to regulate this toxic industry. There are no standards the industry must meet when it comes to clean water, land reclamation, containing the toxic mining waste,

  • Irreparable Harm: Sulfide Mining Interests and the Land

    In designating land for use by sulfide mining companies, what is the fate of critical habitats identified for lynx, moose, etc.? So, H.R. 5544 must have a companion bill in the Senate in order to

  • Recent and potential metallic mining projects in Wisconsin

    Feb 11, 2020· It is primarily a zinc sulfide ore with significant lead and silver and minor amounts of gold and copper. The deposit is estimated to be approximately 5.6 million tons recoverable by open pit mining. Mining companies are considering further exploration and are working with Oneida County's forestry department and the county's mining impact

  • Mining - River Alliance of WI

    Sulfide Mines & Pollution. Sulfide mines are notorious polluters, as they produce sulfuric acid, among other toxins, as a byproduct. Sulfuric acid is produced when sulfide ores, which also contain metals like gold, copper and nickel, are dug up, react with air and water to form sulfuric acid.

  • The Threat Save the Boundary Waters

    Sulfide-ore copper mining is much more toxic than Minnesota’s taconite mining. It produces giant waste piles that, when exposed to air and water, leach sulfuric acid, heavy metals and sulfates. Sulfide-ore copper mines pollute groundwater, rivers and lakes. In the history of sulfide mining…

  • Sulfur Mining & Processing: What to Know General Kinematics

    In Ancient Egypt and Greece, documents refer to sulfur as being used for medication and fumigation. The early days of sulfur mining involved miners finding the element on the earth’s surface in volcanic regions, such as Sicily. Up until the 20th century, sulfur could also be found on salt domes.

  • Sulfide Mining Minnesota Center for Environmental Advocacy

    Sulfide Mining Since our founding in 1974, MCEA has led the legal and policy fight against dangerous sulfide-ore mining proposals in Minnesota. Quite simply, there is no other organization in the state that has the resources and expertise that MCEA does to protect the health and well being of all Minnesotans.

  • Copper Ore Types: Sulfides vs. Oxides An Investor's

    Copper sulfide ores are typically the most profitable copper ore type to mine. That is because they have high copper content, and the copper in them can more easily be separated from unwanted

  • Trump clears way for toxic mine in Boundary Waters

    Jun 29, 2020· Copper sulfide mining carries a very high threat of water pollution – much greater than that of iron mining. While there has been a history of iron ore mining in the region, there is no history of copper sulfide mining in the Boundary Waters region. Background.

  • Sulfide Mining Sierra Club

    The mining of copper/nickel sulfide ores is a toxic type of mining that is risky to our environment, our workers and communities, and local economies. Mining sulfide rock releases acid and toxic metals and contaminants that pollute rivers and groundwater for hundreds of years, long after the profits are spent and the products buried in landfills.

  • Potential Sulfide Mines - WaterLegacy

    Kennecott is a division of global mining company Rio Tinto and Talon is a joint venturer with Rio Tinto. This potential mine poses a unique threat because the area being explored is a massive sulfide mineralized zone bearing concentrated copper, nickel, and cobalt ore (with recoverable platinum, palladium, and gold as well).

  • Differences Between Sulfides And Oxides Difference Between

    Differences Between Sulfides And Oxides Mining has always been a popular business sector in industry. Because of mining, we get to enjoy different jewelries that are made to be durable even over a long period of time. Research has shown that in 2011 mining earned approximately 805 million dollars for the government, which an increase of 114 million dollars from […]

  • Tailings Dams: Where Mining Waste is Stored Forever

    Jul 30, 2012· “The minerals that we’re trying to mine are what are called sulfide minerals,” Chambers explained in our film Alaska Gold. “ The most common sulfide mineral is iron sulfide, pyrite. And what

  • Scott Walker signs bill lifting Wisconsin's sulfide mining

    Dec 11, 2017· In sulfide mining, once rock is extracted from the pit, a chemical process separates the unwanted “tailings” — about 90 percent of the material — from the desired metals — for instance, gold, zinc, copper and silver. One of the chemicals used in the separation process is cyanide.

  • Sulfide mineral - Wikipedia

    The sulfide minerals are a class of minerals containing sulfide (S 2−) or persulfide (S 2 2−) as the major anion.Some sulfide minerals are economically important as metal ores.The sulfide class also includes the selenides, the tellurides, the arsenides, the antimonides, the bismuthinides, the sulfarsenides and the sulfosalts. Sulfide minerals are inorganic compounds

  • About – Sulfide Mining in the BWCA

    Sulfide mining would be toxic to the water, air, and organisms of the Boundary Waters. Sulfur is a naturally occurring substance inside the Earth. When left untouched underground, it …

  • Sulfur Mining & Processing: What to Know General Kinematics

    Sulfur mining takes place in countries such as Poland, Russia, Ukraine, United States and Turkmenistan. Ijen, a quiet but active volcano in East Java, Indonesia contains a one kilometer wide crater lake; a well known site of sulfur mining.Sulfur miners break off large chunks of sulfur from the crater floor and carry the chunks out in large baskets nearly 3 kilometers to town.

  • Concerns Over Sulfide Mining Resurface With Tiffany's Bill

    Sep 20, 2017· Sulfide mining is one of the ways we get metals such as copper, gold, silver and zinc. Tons of rock loaded with the metallic minerals are crushed and processed to extract the valuable metals. But that rock is also loaded with other minerals called sulfides, and when exposed to air and water they can leach acid into nearby streams and groundwater.

  • Sulfide Mining and Human Health - Save the Boundary …

    sulfide mining proposals. In addition, Minnesota physicians need to understand the potential adverse mental and physical health effects of sulfide mining on mine workers and residents of communities near mining operations. T he Duluth Complex is a geological formation that contains deposits of copper, nickel and palladium group metals.

  • Sulphide Mineral Indicators For Gold – BC Gold Adventures

    Sulfide minerals can provide important clues for small-scale gold miners and prospectors in locating both placer and lode deposits. This is especially true when it comes to lode or vein gold. The following are some of the main sulfide mineral indicators you should keep an eye out for when prospecting. Bear in mind, mineral indicators…

  • Concerns Over Sulfide Mining Resurface With Tiffany's Bill

    Sep 20, 2017· Sulfide mining is one of the ways we get metals such as copper, gold, silver and zinc. Tons of rock loaded with the metallic minerals are crushed and processed to extract the valuable metals. But that rock is also loaded with other minerals called sulfides, and when exposed to air and water they can leach acid into nearby streams and

  • Mining - River Alliance of WI

    Sulfide Mines & Pollution Sulfide mines are notorious polluters, as they produce sulfuric acid, among other toxins, as a byproduct. Sulfuric acid is produced when sulfide ores, which also contain metals like gold, copper and nickel, are dug up, react with air and water to form sulfuric acid.

  • Opinion: Sulfides and Uranium in Michigan

    If we define “sulfide mining” as mining that targets sulfide ore minerals (or encounters significant sulfide gangue) with “acid generating potential”, then most types of mining in Michigan history (e.g., Cu, Au, Pb/Zn/Ag, Fe, graphite, coal) could be called “sulfide mining.”

  • Choose this over sulfide mining: renewables, jobs and

    Jan 06, 2021· Choose this over sulfide mining: renewables, jobs and metals recycling Recycling copper and other metals can help address the climate crisis, increase jobs, …

  • What is "Sulfide Mining"? - YouTube

    Aug 18, 2016· The mining industry hates the term, but Paula Maccabee explains why "sulfide mine" is a much more appropriate way to describe PolyMet's proposed project than

  • Everything you need to know about VMS deposits - MINING.COM

    Volcanogenic Massive Sulphide (VMS) deposits are one of the richest sources of metals such as copper, lead, and zinc globally. VMS deposits can also produce economic amounts of gold and silver as

  • Seafloor Mining - Woods Hole Oceanographic Institution

    Many sulfide deposits on land likely were formed the same way and were later were raised above sea level during the formation of islands and continents over millions of years. The island of Cyprus, for example, holds 30 massive sulfide deposits, which were a main source of copper for ancient Rome.

  • New mining opportunities in northern Minn. pose

    Mining opponents, like Betsy Daub with the group Friends of the Boundary Waters, worry about sulfide mining's track record in western states. "What we haven't yet seen is the mining companies – the industry – be able to hold up some shining star examples of sulfide mining where we haven't seen really horrifying pollution problems," Daub said.

  • Sulfide Mine Permit Denied: “A Win for Wetlands”! Mining

    In addition to exposing sulfide based ore, the mining process would use cyanide and other toxins, a stone’s throw from one of the largest tributaries to Lake Michigan. The risks to wetlands, groundwater, surface water, the Great Lakes and the cultural legacy of …

  • Boundary Waters (BWCA) Sulfide Mining

    Sulfide mining is the process of extracting trace amounts of copper, nickel and other metals from sulfide-bearing ores, which produces sulfuric acid. This is the same as battery acid. In addition to acidifying lakes and rivers, sulfuric acid leaches out heavy metals such as mercury, lead, arsenic and other toxins from the rock to produce acid

  • Sulfide Minerals - an overview ScienceDirect Topics

    The sulfide minerals are the major source of world supplies of a very wide range of metals and are the most important group of ore minerals. In addition to their concentrated occurrence in ore deposits and areas of mineralization, a limited number of sulfide minerals are found as accessory minerals in rocks.

  • Wisconsin’s Mining Moratorium Under Attack Indigenous

    Wisconsin Governor Scott Walker and the mining industry have begun a major lobbying effort to overturn Wisconsin’s landmark Mining Moratorium Law. The law, also known as Wisconsin’s “Prove it First” law, was developed to address the problem of acid mine drainage from metallic sulfide mining.

  • What is Sulfide Mining? Mining Action Group

    What is Sulfide Mining? Metallic sulfide mining (aka hard rock mining) is the practice of extracting metals such as nickel, gold and copper from a sulfide-rich ore body.

  • Sulfide Mining, Mining Methods, Techniques, Copper, Zinc

    Sulfide Mining Mining is the method of tacking materials from the earth to get valuable metal ores like copper, zinc, and lead, which are known as target minerals in mining terms. Metal ores like copper, zinc and lead are minute quantities contrasted to the whole composition of the earth.

  • Copper Sulfide Mining - Earthworks

    Copper Sulfide Mining A peer-reviewed study of the track record of water quality impacts from copper sulfide mines found severe impacts to drinking water aquifers, contamination of farmland, contamination and loss of fish and wildlife and their habitat, and risks to public health.

  • sulfide mineral Definition, Examples, Identification

    The composition of the sulfide minerals can be expressed with the general chemical formula A m S n, in which A is a metal, S is sulfur, and m and n are integers, giving A 2 S, AS, A 3 S 4 and AS 2 stoichiometries. The metals that occur most commonly in sulfides are iron, copper, nickel, lead, cobalt, silver, and zinc, though about fifteen others enter sulfide structures.

  • Lime in Gold Ore Mining Process Flotation, Cyanidation

    This phenomenon especially includes arsenic sulfide, barium sulfide and ore in the ore. It is especially serious when strontium sulfide is used. Once this phenomenon occurs, the production of lime can be increased by increasing the amount of lime, increasing the pH of the slurry and inhibiting the activity of the sulfide.