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...ancient marine evaporites at 10 to 35‰, and modern and ancient sedimentary pyrite at −50 to 15‰.]] ...lreview" /> [[Archean]] [[pyrite]] found in [[barite]] in the [[Warrawoona Group]], Western Australia, with sulfur fractionations as great as 21.1‰ hint at ...

...re is one subgroup with dihedral symmetry: Dih₁, and 2 [[cyclic group]] symmetries: Z₅, and Z₁. ...pentagon. [[John Horton Conway|John Conway]] labels these by a letter and group order.<ref>John H. Conway, Heidi Burgiel, [[Chaim Goodman-Strauss]], (2008) ...

...e the SMTZ and consists mainly of members of Euryarchaeotal Marine Benthic Group D.<ref name="Harrison 2009" /> ...still unknown as to whether there is a specific sulfate-reducing bacterial group associated with AOM. The ''Desulfosarcinales'' and ANME-2 consortia has now ...

...|icosahedral]] (<math>I_h</math>) [[Point groups in three dimensions|point group symmetry]].These forms occur for both elemental nanoparticles<ref>{{Cite jo ...=2022 |title=Crystal shapes, triglyphs, and twins in minerals: The case of pyrite |url=https://pubs.geoscienceworld.org/ammin/article/107/12/2251/619047/Crys ...

|bgcolor=#e7dcc3|[[Symmetry group]]||[[Tetrahedral symmetry|Tetrahedral]] (T_d) ...cted by chamfering the axial edges of a [[pyritohedron]]. This occurs in [[pyrite]] crystals. ...

...lectance spectroscopy]] have revealed how the replacement of the carbonate group with sulfate ion [[Tetrahedral molecular geometry|tetrahedra]] expands the ...aufman |first4=Alan J. |last5=Bottjer |first5=David J. |title=Oxidation of pyrite during extraction of carbonate associated sulfate |journal=Chemical Geology ...

...oup 10 element|group 10]] of the [[periodic table]]. Most compounds in the group have an [[oxidation state]] of +2. Nickel is classified as a [[transition m ...([[millerite]]) and two other NiS forms, NiS₂ ([[vaesite]]) in pyrite structure. Black nickel tetrasulfide NiS₄ is formed from [[ammon ...

...Properties of water|water]]-rock reactions, [[radiolysis]] of water, and [[pyrite]] formation, all of which produce [[Hydrogen|H₂]] that could the ...rs propose new mechanism as an explanation - An interdisciplinary research group from Aarhus University has proposed a previously overlooked physical-chemic ...

...ges=465–570 |title=CLIMATE CHANGE 2013 The Physical Science Basis, WORKING GROUP I CONTRIBUTION TO THE FIFTH ASSESSMENT REPORT OF THE INTERGOVERNMENTAL PANE ...blisher=Climate change 2001: the scientific basis: contribution of Working Group I to the Third Assessment Report of the Intergouvernmental Panel on Climate ...