Interaction of acid mine drainage with ... - SpringerLink

The fragmentation and incoherence of the waste material enhance chemical (oxidation) reactions, particularly when iron sulphides are present, producing acid mine drainage (AMD). Oxidation of metal sulphides in mines, mine dumps and tailings impoundments originates acidic, metal-rich waters which can contaminate local surface water, …


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RIDGELAND SERIES MLRA(s): 153A, 153B ... TAXONOMIC CLASS: Sandy, siliceous, thermic Oxyaquic Alorthods. TYPICAL PEDON: ... Rock Fragment content: 0 to 15 percent, by volume, iron concretions, in some pedons Soil Reaction: extremely acid to slightly acid, except where limed.


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WHAT ABOUT ACID ROCK DRAINAGE? - Mining …

WHAT ABOUT ACID ROCK DRAINAGE? What is acid rock drainage? Acid rock drainage (ARD) is the natural result of oxidizing or "rusting" of certain types of sulfur-bearing minerals in the presence of water, air and bacteria. ARD is a very weak form ... Pyrite + Oxygen + Water Iron oxide + sulfuric acid


The Drenchwater deposit, Alaska: An example of a …

Acid rock drainage is typically produced by weathering of sulfidic (and commonly pyrite-rich) rocks exposed to the surficial environment. ... Pb–Ag massive sulfide deposits of the northern Brooks Range, consists of dark gray to black carbonaceous and variably siliceous shale, mudstone and chert. ... Kuna Fm whole rock data from Slack et al ...


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samples were selected to represent the range of lithologies with the highest acid rock drainage (ARD) potential within the Wabush 3 area. ... three sub-units consisting of the lower siliceous horizon, the middle low silica (<5% SiO2) ... The Wishart Fm. can be subdivided into the Lower,


Acid mine drainage - Wikipedia

Acid mine drainage, acid and metalliferous drainage (AMD), or acid rock drainage (ARD) ... (often pyrite, which is iron-sulfide) within the surrounding rock and overburden generates acidity. Colonies of bacteria and archaea greatly accelerate the decomposition of metal ions, ...


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Acid rock drainage (ARD) or acid mine drainage refers to the acidic water which is created when sulphide minerals are exposed to air and water and, through a natural chemical reaction, produce sulphuric acid. ... 14 Hedin, R.S., Recovery of Marketable Iron Oxide From Mine Drainage in the USA. Land Contamination and Reclamation, 2003. 11(2): p ...


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Official Series Description - TARKINGTON Series

The Tarkington series consists of very deep, moderately well drained soils. These nearly level soils are on mounds that formed in loamy fluviomarine deposits derived from the Lissie Formation of early Pleistocene age. ... TAXONOMIC CLASS: Coarse-loamy, siliceous, semiactive, thermic Oxyaquic Glossudalfs TYPICAL PEDON: Tarkington …