Sentences with phrase «mineral pyrite»

Acid mine drainage (AMD) refers to the outflow of acidic water from coal or metal mines, often abandoned ones where ore - or coal mining activities have exposed rocks containing the sulphur - bearing mineral pyrite.

The trilobites from this locality are replaced with the mineral pyrite.

Not exact matches

«As bacteria ate the tissues of the animals that fell to the bottom,» he says, «they deposited a mineral called iron pyrite over the animal.

The best idea, from Don Canfield [of the University of Southern Denmark], is that building up a little bit of atmospheric oxygen causes iron pyrite minerals in the continents to oxidize and form sulfate.

Dated to 3.43 billion years ago in sandstone from the Strelley Pool Formation in Western Australia, the microstructures were found with micrometer - sized pyrite crystals (fool's gold, an iron - sulfur mineral), as would be expected as the metabolic by - products of sulfur - based life that employ «sulphate - reduction and sulphur - disproportionation pathways.»

The breakdown of minerals such as pyrite produces sulfate, which then flows down rivers to the oceans.

DAVID ALTMEJD The Swarm 2011 Plexiglas, chain, metal wire, thread, acrylic paint, epoxy resin, epoxy clay, acrylic gel, granular medium, synthetic hair, plaster, foam, sand, quartz, pyrite, amethyst, assorted minerals, adhesive, wire, pins, needles 102 1/2 x 244 x 84 1/2 inches (260.4 x 619.8 x 214.6 cm) ARG # AD2011 - 003

DAVID ALTMEJD The Vessel 2011 Plexiglas, chain, plaster, wood, thread, wire, acrylic paint, epoxy resin, epoxy clay, acrylic gel, granular medium, quartz, pyrite, assorted minerals, adhesive, wire, pins, needles 102 1/2 x 244 x 86 1/2 inches (260.4 x 619.8 x 219.7 cm) ARG # AD2011 - 002

The artist scanned small pieces of pyrite — also known as fool's gold — and discovered unique interpretations of the mineral content.

Foam, wood, glass, mirror, Plexiglas, resin, silicone, taxidermy birds and animals, synthetic plants, paint, pinecones, horse hair, burlap, chains, wire, feathers, quartz, pyrite, other minerals, jewelry, beads, glitter

Steel, foam, wood, glass, mirror, Plexiglas, lighting system, silicone, resin, taxidermy birds and animals, synthetic plants, synthetic tree branches, bronze, fiberglass, paint, burlap, leather, pinecones, horse hair, synthetic hair, chains, wire, feathers, quartz, pyrite, other minerals, glass eyes, clothing, shoes, jewelry, beads, monofilament, glitter

Up to 20,000 homes may now be infected with pyrite, a mineral that can cause some construction materials to expand and crack if exposed to air and water (7).

«Pyrite is a mineral which is found in stone and produces sulfuric acid when it oxidizes upon contact with humidity and oxygen.