pyrite mineral problem

  • What should you do if pyrite is found on your property ...

    Pyrite is a mineral (FeS2) found in the backfill material used during construction. When it comes into contact with moisture and oxygen, a chemical reaction produces sulphate and can turn it into gypsum, and crystallisation can cause the stone to shatter. Expansion then occurs, also causing the concrete to expand and crumble.

  • safety

     · $begingroup$ Evidently if the pyrite specimen is kept in a very dry case then it will last a very long time. In humid climates perhaps just centuries. The problem became known because museum mineral collections date back over several centuries. $endgroup$ – MaxW Nov 11 ''16 at 14:32

  • Fool''s Gold – Utah Geological Survey

    Pyrite cannot be scratched. (Beware – chalcopyrite looks similar to pyrite, but is softer and can be scratched with a knife. It is a very brassy yellow, often with a bronze or iridescent tarnish.) Odor: Rub the mineral vigorously with a hard object. Gold has no odor, but pyrite gives off …

  • Pyrite + Mica | Continuing Problems | BRegsForum

     · 02 June 2016. Significant problems with construction materials re-emerged this week when RTÉ broadcast a Prime Time special on mica infested blocks in Donegal (See "Crumbling Donegal Homes"). This is a major structural problem for homes affected and in many cases complete demolition and rebuilding is the only remedy, similar to pyrite problems identified in concrete blocks.

  • The causes behind pyrite oxidation

     · "Pyrite oxidation is a classic geologic and environmental problem, but we know little about the rate of pyrite oxidation occurring in deep rock," Xin Gu, assistant research professor in Penn ...

  • How do pyrite and pyrrhotite damage building foundations ...

    The PYRITE guide - Surveyors Journal

  • PaleoPortal Fossil Preparation | Pyrite "Disease"

    Pyrite "Disease". Pyrite (or iron persulfide: FeS2), also known as "fool''s gold," is a common mineral that is often found in sedimentary rock. In some fossil deposits pyrite gets incorporated into bone, invertebrate shell, and plant fossils during the process of …

  • amrclearinghouse :::AMD Basics

    Wherever pyrite can come into contact with oxygen and water a potential problem exists. This trio of pyrite, oxygen and water gets the ball rolling in the formation of AMD. Let''s examine how. When pyrite is initially exposed to oxygen and water the following reaction can occur. 4FeS 2(s) + 14O 2(g) + 4H 2 O (l) ---> 4Fe 2+ (aq) + 8SO 4 2-(aq ...

  • Pyrite

    Pyrite is a cool mineral that forms a range of beautiful and interesting crystal shapes, all with pyrite''s distinctive brassy yellow color (Amethyst Galleries shows examples) is associated with a range of economically important ore minerals, and it often takes interesting forms in marine sediments.

  • Building Defects, Defective Blocks, Pyrite

    Pyrite or Iron Pyrite (FeS2) is a very common mineral that is present in many sedimentary rocks as framboidal crystals. Subject to certain conditions, pyrite is problematic in confined construction, such as under floor filling and bridge embankments. This is due to a …

  • Pyrite Healing Properties & Benefits | Crystal Curious

    Pyrite Mineral & Gemstone Information. Pyrite is called "fool''s gold" due to its shiny appearance fooling prospectors into thinking they had found gold. It consists of iron sulfide and its hardness is a 6 to 6.5. It is found in a variety of interesting shapes, sometimes forming natural cubes.

  • Pyrite problem

    Pyrite Problems relating to pyrite in the backfill beneath concrete slabs. Pyrite is a sulphite mineral. Traces are found in sedimentary rock used to make crushed stone for backfill. In the presence of humidity and oxygen, pyrite oxidizes and produces sulphuric acid.

  • (PDF) Pyrite

    Pyrite (FeS2) is the most abundant sulphide mineral in the Earth''s crust, and with its characteristic shape and appearance, is easily one of the most recognizable. Yet, pyrite has a somewhat tarnished reputation with many considering it to be waste material and of little economic importance, never- …

  • Pyrite – Showglade

    Pyrite or Iron Pyrite is a very common mineral that is present in many sedimentary rocks as framboidal crystals. Subject to certain conditions, pyrite is problematic in confined construction, such as under floor filling and bridge embankments. This is due to a chemical reaction that can cause pyritic backfill to swell.

  • Pyrite Disease: Keeping Fool''s Gold Challenges Museums ...

     · Pyrite Disease: Keeping Fool''s Gold Challenges Museums. Pyrite, or fool''s gold, has duped prospectors for millennia, and now it''s providing a tricky challenge for museums. Pyrite is a very common mineral found worldwide and in a very large variety of rocks. The Canadian Museum of Nature collection holds about 800 pyrite specimens.

  • What Is Pyrite? How to Check for it and Find Solutions ...

     · Pyrite is an iron sulphide, known as "fool''s gold" whose crystallization shimmers with gilded reflections. If the brilliance of this worthless mineral deceived gold prospectors of their time, its oxidization when in contact with moisture and oxygen, producing sulfuric acid, stirs up a bitterness in many owners today.

  • Landscape to atomic scales: Researchers apply new approach ...

     · "When pyrite reacts with oxygen, it releases sulfuric acid, which can cause acid mine drainage, a serious environmental problem across the globe and especially here in Pennsylvania." When exposed to air, like in a mine, pyrite will fully oxidize in a matter of years, Gu said. Microorganisms can also form on the mineral and speed up the ...

  • Pyrite: The Real Story Behind "Fool''s Gold"

     · Pyrite is called "Fool''s Gold" because it resembles gold to the untrained eye. While pyrite has a brass-yellow color and metallic luster similar to gold, pyrite is brittle and will break rather than bend as gold does. Gold leaves a yellow streak, while pyrite''s streak is brownish black. Read more about this sulfide (FeS2) mineral here.

  • Removal of all pyrite not needed, says report

     · AN ESTIMATED 10,000 homes believed to have structurally damaging mineral pyrite in their foundations should not automatically have the material removed, a report on the problem has found.

  • Pyrite Mineral Data

    McDougall Minerals Google Search for Pyrite Mineral News Website Link Rock and Mineral Shows Google Search for Pyrite Weinrich Minerals, Inc. Google Search for Pyrite. Ask about Pyrite here : Ask-A-Mineralogist from the Mineralogical Society of America Mindat ''s Discussion Groups

  • Devastating ''pyrite epidemic'' hits 20,000 newly built ...

     · UP to 20,000 homeowners are facing the devastating "pyrite problem" which is destroying recently built houses. T he Irish Independent has learned that this many claims for pyrite-related damage ...

  • Pyrite: The mineral pyrite information and pictures

    Pyrite has the same chemical formula as the rarer mineral Marcasite, but it crystallizes in a different crystal system, thereby classifying it as a separate mineral species. Aggregates of iron sulfide (FeS 2 ) where the crystal structure cannot be determined without complex analyzing material may be wrongly labeled by dealers.

  • How do pyrite and pyrrhotite damage building foundations ...

    This is a particular problem for concrete foundations and basements when water seeps in from the surrounding ground. Pyrite in underlying rocks. Pyrite is a common mineral in shale, coalbeds, and adjacent rocks. However, rocks containing pyrite generally don''t cause swelling problems unless they are disturbed by human activity.

  • Deep abiotic weathering of pyrite | Science

     · Pyrite, also called fool''s gold, is an iron sulfide mineral that is very commonly found in rock but is almost nonexistent in sediments today. Pyrite oxidizes quickly and is a major source of sulfur to the ocean, but it is also a proxy for the oxygen content historically in Earth''s atmosphere. Gu et al. conducted a set of detailed observations of the pyrite oxidation process in a shale unit.

  • thehealingchest

     · Wear pyrite crystal jewelry like a bracelet, necklace and earrings that keep the healing iron sulfide mineral near the problem area. A necklace or brooch made with pyrite are perfect for improving circulatory and upper respiratory function.

  • Pyrite | Minerals Education Coalition

    Pyrite. Commonly called fool''s gold, pyrite is the Earth''s most abundant sulfide mineral. Recognized for its brass-yellow color which resembles that of gold, pyrite is a source of iron and sulfur and is used for the production of sulfuric acid. Some types of pyrite contain enough microscopic gold to warrant mining them as a gold ore.

  • Group call for pyrite scheme extension after homes ...

     · Marita Moloney. 10.37 6 Nov 2020. A group in Clare is calling for the extension of a pyrite scheme to their county after their homes were "diseased" by the mineral. The scheme is currently only ...

  • Pyrite

    Pyrite in some aggregates derived from tin mining waste has been involved in the general deterioration of low-grade concrete and concrete building blocks in Cornwall and parts of Devon in the UK. 86–88 However, this so-called ''mundic'' problem (''mundic'' is the old Cornish word for pyrite) also appears to involve moisture movement ...

  • Effect of pyrite content of feed and configuration of ...

     · It leads to some problems such as enhancement of pyrite''s proportion in gangue minerals, over-consumption of reagents, declination of ultimate copper grade, the increase of SiO 2 in concentrate which in turn results in higher temperature requirement in further copper smelting process as well as increase in sulfur emission.

  • Pyrite

    Pyrite''s metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fool''s gold.The color has also led to the nicknames brass, brazzle, and Brazil, primarily used to refer to pyrite found in coal.. The name pyrite is derived from the Greek πυρίτης λίθος (pyritēs lithos), "stone or mineral which strikes fire", in turn from ...

  • Stone cold

     · Arsenic-containing pyrite in coals still poses a severe health problem for millions of people in the Guizhou province in China. Sulphur and sulphuric acid used to be produced from Pyrite ore but are currently obtained as by-products of natural gas and crude oil processing leaving very limited economic value to Pyrite so the mineral is currently ...

  • Pyrite Guide

    Pyrite may only be "fool''s gold," but it is a captivating mineral nonetheless. Its role in history and industry is fascinating. While in some ways it is not an ideal mineral for jewelry, properly lacquered and cared for, it may make a beautiful choice.

  • Foundation Problems and Pyrite Oxidation in the ...

    concentrations of pyrite occur in the Chattanooga Shale across the state, and these mineral zones may be responsible for the high pyrite content in Estill County. Foundation Problems and Pyrite Oxidation in the Chattanooga Shale, Estill County, Kentucky Warren H. Anderson Introduction Significant foundation and structural problems

  • A revaluation of the Co/Ni ratio in pyrite as geochemical ...

    On the basis of a sound evaluation of literature''s data, the Co/Ni ratio in pyrite proves a more reliable indicator in ore genesis than previously retained. This is particularly true for volcanogenic pyritic ores which are constantly characterized by Co/Ni values (>5 but more often >10) definitely higher than those attained by sedimentary or hydrothermal pyrites.

  • Ultimate Guide to Pyrite

    What is Pyrite? Pyrite is a common mineral sometimes present in sedimentary rocks. When exposed to air and moisture, pyrite can oxidise and form gypsum. ... The pyrite problem first came to light in Ireland in 2007 and since then, more developments have been affected with current estimates being that approximately 20,000 homes are impacted.

  • Solved: Pyrite is a gold-colored mineral that is also ...

    Pyrite is a gold-colored mineral that is also known as fool''s gold to miners. It is an ionic compound of iron and sulfur. It has a cubic unit cell with four formula units in the cell and a density of 5.012 g/cm 3.If the unit cell parameter is 5.418 Å, what is the formula of this material?

  • What is Pyrite? Why is pyrite a problem? | test ...

    Pyrite or Iron Pyrite (FeS2) is a very common mineral that is present in many sedimentary rocks as framboidal crystals. Subject to certain conditions, pyrite is problematic in confined construction, such as under floor filling and bridge embankments. This is due to a …

  • Illinois State Geological Survey Pyrite Suns | ISGS

    Pyrite "suns," also called "miners'' dollars," are spectacular disk-shaped mineral concretions of pyrite [iron sulfide (FeS 2) arranged in a regular cubic configuration] with minor amounts of marcasite [also iron sulfide (FeS 2) but arranged in an orthorhombic configuration, i.e., a rectangular or stretched cube shape].The mineral disks range from the size of a small penny up to the ...