Greigite is an iron sulfide mineral with the chemical formula Fe2+Fe3+2S4. It is the sulfur equivalent of the iron oxide magnetite (Fe3O4). It was first...
7 KB (562 words) - 20:55, 22 December 2023
iron and sulfur. By increasing order of stability: Iron(II) sulfide, FeS Greigite, Fe3S4 (cubic) Pyrrhotite, Fe1−xS (where x = 0 to 0.2) (monoclinic or hexagonal)...
1 KB (128 words) - 23:21, 14 March 2022
and in association with chalcopyrite, cubanite, pentlandite, pyrrhotite, greigite, maucherite, and troilite. Mackinawite also occurs in reducing environments...
12 KB (1,014 words) - 20:49, 9 January 2024
mollusc species, the scaly-foot gastropod, even uses the iron sulfides greigite and pyrite.[citation needed] Some organisms, such as some foraminifera...
19 KB (2,162 words) - 07:30, 27 January 2025
Iron(III) sulfide (section Greigite)
to the following reaction equation: Fe2S3 + 4 HCl → 2 FeCl2 + 2 H2S + S Greigite, with the chemical formula Fe2+Fe3+2S4, is a mixed valence compound containing...
3 KB (221 words) - 08:10, 19 January 2025
smell is mainly due to its sulphur content. Because of the presence of greigite (Fe3S4, Iron(II,III) sulphide) in the mineral, it forms brownish-pink to...
9 KB (965 words) - 13:09, 20 November 2024
magnetite (Fe3O4), or iron sulfide magnetosomes, which contain crystals of greigite (Fe3S4). Several other iron sulfide minerals have also been identified...
14 KB (1,717 words) - 15:27, 28 January 2025
Joseph W. Greig (section Greigite (Fe3S4))
oxides and sulfides. His name has been assigned to a new magnetic mineral, greigite (Fe 3S 4) discovered in 1963, increasing to nine the number of minerals...
3 KB (278 words) - 04:21, 18 May 2023
similar to iron(II,III) oxide. It occurs naturally as the sulfide mineral greigite and is magnetic. It is a bio-mineral produced by and found in magnetotactic...
7 KB (612 words) - 05:06, 25 December 2023
about the environments in which greigite magnetofossils are created and the magnetic properties of the preserved greigite particles. Existence of magnetotactic...
13 KB (1,564 words) - 20:43, 7 January 2025
to exhibit framboidal structures include magnetite, hematite, and greigite. Greigite is considered an essential precursor of framboidal pyrite formation...
2 KB (287 words) - 22:15, 11 October 2023
sulfides greigite and pyrite. Each sclerite has a soft epithelial tissue core, a conchiolin cover, and an uppermost layer containing pyrite and greigite. Prior...
63 KB (6,299 words) - 18:17, 21 November 2024
extremophile bacteria from sulfurous environments have been isolated with greigite (an iron-sulfide compound Fe3S4). Some magnetotactic bacteria also contain...
8 KB (899 words) - 05:14, 22 August 2024
Bornhardtite, 05 Florensovite, 05 Carrollite, 05 Fletcherite, 05 Daubréelite, 05 Greigite, 05 Linnaeite, 05 Kalininite, 05 Polydymite, 05 Violarite, 05 Tyrrellite...
14 KB (1,533 words) - 10:36, 2 December 2024
magnetotactic bacteria are reported to precipitate either magnetite or greigite. These crystals, and sometimes the chains of crystals, can be preserved...
39 KB (4,843 words) - 07:47, 24 October 2024
Grandreefite Graphite Gratonite Greenalite Greenockite Gregoryite Greifensteinite Greigite Grossite Grossular Groutite Grunerite Guettardite Gugiaite Guilleminite...
43 KB (2,848 words) - 04:05, 30 January 2025
Kairei hydrothermal vent field. The latter uses iron sulfides (pyrite and greigite) for the structure of its dermal sclerites (hardened body parts), instead...
116 KB (13,501 words) - 22:31, 9 December 2024
Cadmoindite – CdIn2S4 Carrollite – CuCo2S4 Fletcherite – Cu(Ni,Co)2S4 Greigite – Fe2+Fe3+2S4 Indite – FeIn2S4 Kalininite – ZnCr2S4 Linnaeite – Co2+Co3+2S4...
2 KB (166 words) - 19:24, 22 September 2021
iron-sulphur minerals pyrite and greigite. Magnetotactic bacteria also employ magnetic iron minerals magnetite and greigite to produce magnetosomes to aid...
100 KB (10,410 words) - 02:37, 4 December 2024
Goldichite Gol Greifensteinite Gfs Gaspéite Gpé Gianellaite Gia Goldmanite Glm Greigite Grg Gatedalite Gtd Gibbsite Gbs Goldquarryite Gqy Grenmarite Grn Gatehouseite...
180 KB (418 words) - 12:01, 15 December 2024
layer of magnetite Buena Vista Iron Ore District Corrosion product Ferrite Greigite Magnesia (in natural mixtures with magnetite) Mill scale Magnes the shepherd...
51 KB (5,376 words) - 07:58, 15 October 2024
concentrations. Magnetosomes are composed of the mineral magnetite or greigite and are surrounded by a lipid bilayer membrane. The morphology of magnetosomes...
35 KB (4,590 words) - 05:56, 9 November 2024
Associated minerals include stibnite, realgar, orpiment, cinnabar, vrbaite, greigite, marcasite, pyrite, tetrahedrite, antimonian sphalerite, arsenic and barite...
8 KB (814 words) - 01:26, 7 April 2024
class of strongly magnetic minerals is the iron sulfides, particularly greigite and pyrrhotite. Extraterrestrial environments being low in oxygen, minerals...
6 KB (518 words) - 04:07, 17 December 2023
biochemistry, geology, phylogeny, and experimentation: Iron-Sulphur minerals like Greigite catalyse the reduction of carbon dioxide in hydrothermal vents to make...
79 KB (8,987 words) - 15:37, 11 January 2025
1995). "Controlled Biomineralization of Magnetite (Fe(inf3)O(inf4)) and Greigite (Fe(inf3)S(inf4)) in a Magnetotactic Bacterium". Applied and Environmental...
15 KB (1,509 words) - 12:00, 8 December 2024
its foot, and these are mineralized with the iron sulfides pyrite and greigite, which had never previously been found in any metazoan but whose ingredients...
40 KB (4,942 words) - 21:26, 13 December 2024
surface reactivity of such iron and manganese nanoparticles and pyrite−greigite nanocomposite when exposed to highly toxic contaminants present in water...
14 KB (1,778 words) - 19:48, 29 January 2025
, Schwab, M., J., Naumann, R., Striewski, B., Agnon, A. (July 2007). "Greigite Detected as Dominating Remanence Carrier in Late Pleistocene Sediments...
31 KB (3,703 words) - 18:08, 28 January 2025
including magnetite, maghemite, hematite; and iron sulfides (particularly greigite and pyrrhotite). These minerals are strongly magnetic because, at room...
6 KB (690 words) - 12:35, 27 October 2021