what is sulfide mining

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what is sulfide mining

Copper Ore Types: Sulfides vs. Oxides | INN

What are copper sulfide ores? Different methods are used to process copper sulfide ores depending on the concentration of copper within the ore — higher-concentrated ores can be separated via ...

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Defending the Boundary Waters from sulfide mine pollution

The following year, the Biden administration announced a 20-year moratorium on mining in 225,000 acres of the Superior National Forest that would protect the Boundary Waters from mining pollution. Although Twin Metals has brought a lawsuit to reinstate the leases, at this point the project cannot move forward.

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Maps | Mining Action Group

The Mining Action Group is a volunteer, grassroots effort to defend the clean water and wild places of Michigan's Upper Peninsula from the dangers of sulfide mining – previously known as Save the Wild U.P.

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sulfide mineral summary | Britannica

sulfide mineral, or sulphide mineral, Any member of a group of compounds of sulfur with one or more metals. The metals that occur most commonly are iron, copper, nickel, lead, cobalt, silver, and zinc. They are the ore minerals of most metals used by industry (e.g., antimony, bismuth, copper, lead, nickel, and zinc).

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Sulfide mineral | Definition, Examples, Identification, & Facts

The most common sulfide crystalling in this manner is galena (PbS), the ore mineral of lead. A type of packing that involves two sulfide ions in each of the octahedral positions in the sodium chloride structure is the pyrite structure. This is a high-symmetry structure characteristic of the iron sulfide, pyrite (FeS 2 O).

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Everything you need to know about VMS deposits

Today's visualization comes to us from Foran Mining Corp. and goes in depth to show how one type of mineral deposit, Volcanogenic Massive Sulphide or "VMS", forms and is the primary source ...

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Sulfide Mining

Learn why MCEA opposes sulfide-ore mining proposals in Minnesota, such as PolyMet, and how they threaten water, wetlands, climate and communities. Find out the latest …

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Sulfide Mining and Human Health

Sulfide mining (specifically copper-nickel sulfide mining) represents a significant departure from Minnesota's iron mining tradition. Sulfide mining can produce acid waste and sulfates that mobilize the release of heavy metals into the environment. These metals include known neurotoxins such as lead and mercury.

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In Minnesota, when it comes to pro-sulfide …

On July 18, 2019, Twin Metals Minnesota suddenly announced it would use dry stacking for tailings waste at its proposed copper-nickel sulfide mine adjacent to Minnesota's Boundary Waters …

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Science Desk: How Sulfide-Ore Copper Mines …

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 …

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Pyrite Mineral | Uses and Properties

What is Pyrite? Pyrite is a brass-yellow mineral with a bright metallic luster.It has a chemical composition of iron sulfide (FeS 2) and is the most common sulfide mineral.It forms at high and low temperatures and occurs, usually in small quantities, in igneous, metamorphic, and sedimentary rocks worldwide. Pyrite is so common that many …

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What you need to know about the Twin Metals …

Copper-nickel and other sulfide mining has a long legacy of water pollution across the U.S. Unlike iron ore mining, copper-nickel mining has the potential to create an acidic runoff that can leach ...

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Sulfide Mining Overview

What is Sulfide Mining? Sulfide mining (also known as metallic mining) refers to mining operations which remove metals, such as copper, nickel, platinum and others, from …

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Protect the Boundary Waters from sulfide-ore copper mining.

Proposed sulfide-ore copper mining threatens these waters and forests. A copper mine in the Boundary Waters watershed will pollute the Wilderness for generations to come, causing irreversible harm to water quality, wildlife, public health, and a sustainable outdoor recreation-based economy.

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In Minnesota, when it comes to pro-sulfide-mining rhetoric …

Sulfide Mining is a process, like open pit mining, hard rock mining. Please try to keep up, this is important. Log in to Reply. Eric Snyder says: 09/07/2019 at 07:37 pm

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Will Sulfide Mines Bring Employment and Economic …

"Sulfide mining" is a term used to refer to mining metals that are found in sulfide-bearing rock. In Minnesota, the sulfide mining proposals and exploration activities are focused primarily on extracting copper, nickel, platinum, palladium and gold. While the state has a history of iron mining, sulfide mining has never been conducted in

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Choose this over sulfide mining: renewables, jobs and …

Across the United States, every sulfide mine in a water-rich environment has resulted in acid mine drainage and/or toxic metal pollution of lakes, streams or groundwater aquifers. That is a ...

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Sulfide Mining & Voyageurs National Park

Sulfide Mining & Voyageurs National Park Protecting Our Pristine Waters. Voyageurs National Park encompasses more than 84,000 acres of water! These waters are home to loons, snapping turtles and wood frogs, otters, and 53 species of fish, including lake sturgeon, walleye, and smallmouth bass. These native species rely on clean water to …

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What Is Acid Mine Drainage? Definition, Causes, and …

Acid mine drainage refers to the acidic water that forms when surface water (which can mean rainwater, snowmelt, pond water, etc.) and air are exposed to iron sulfide, typically pyrite, a solid ...

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Eagle Mine Facts | Mining Action Group

Eagle Mine is a sulfide mine, which threatens to leach sulfuric acid into fresh waterways— including the Yellow Dog River, Salmon Trout River, and Lake Superior! Don't let this type of mining change our Michigan lifestyle. Great Lakes water quality and Michigan's wild lands are our legacy and our responsibility. Work with the UPEC Mining ...

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9.2.2: Sulfides and Sulfosalts

Sulfide minerals, however, show lots of variation in appearance, especially if they are tarnished. Space does not permit including photos of all the different sulfides here, but some examples are below. The most common gold and goldish sulfides are pyrite, chalcopyrite, and pyrrhotite (shown in Figures below). They can be very hard to tell apart.

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Global Trends and Environmental Issues in Nickel Mining: …

Nickel sulfide mining and processing had historical environmental impacts, including damaging lakes and wetlands, as reported by Mudd (2010). Wanger (2011) raises concerns over water contamination ...

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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.

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Sulfide Mining and Human Health

Sulfide mining (specifically copper-nickel sulfide mining) represents a significant departure from Minnesota's iron mining tradition. Sulfide mining can produce acid …

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How does mine drainage occur? | U.S. Geological Survey

Mine drainage is surface water or groundwater that drains from an active or abandoned mine. In some cases, pyrite (an iron sulfide mineral) is exposed and reacts with air and water to form sulfuric acid and dissolved iron. Some or all of this iron can precipitate to form the red, orange, or yellow sediments in the bottom of streams containing mine drainage.

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Hydrogen Sulfide

Hydrogen sulfide (also known as H 2 S, sewer gas, swamp gas, stink damp, and sour damp) is a colorless gas known for its pungent "rotten egg" odor at low concentrations. It is extremely flammable and highly toxic. Hydrogen sulfide is used or produced in a number of industries, such as. Oil and gas refining; Mining; Tanning; Pulp and paper ...

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What is Sulfide Mining? | Mining Action Group

Sulfide mining is the extraction of metals from sulfide-rich ore bodies, which can create acid mine drainage and pollute water and environment. Learn why sulfide mining is dangerous, a bad deal for the U.P., and what is happening with sulfide mining projects …

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Copperwood Mine Facts | Mining Action Group

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Here's what you need to know about recent …

Day by day, here's a synopsis of how recent developments fit into the larger picture of the fight against sulfide mining in northeastern Minnesota: From cancelled mineral leases to grooving on from PolyMet on the Capitol …

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Tenor and Magmatic Ni Deposits | Geology for Investors

Tenor (AKA sulphide metal content) is defined as the concentration of a metal, usually Ni, contained in sulfides. This is the nickel that can actually be extracted from the ore. Grade can be calculated from the product of tenor multiplied by the proportion of sulfides in the rock, a property which is easily estimated from basic core …

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