Sentences with phrase «dissolved pyrite»

Not exact matches

On the seabed, dissolved iron (II) ions have combined with the hydrogen sulphide to form iron sulphides, for example pyrite, FeS2, which is unstable when the moist wood is exposed to oxygen: FeS2 (s) + 7 / 2O2 + (n +1) H2O → FeSO4 · n (H2O)(s) + H2SO4 (aq)

Warning: While it's fine for most, some gems can't be submerged in water, which can actually dissolve the stone (e.g., gypsum, halite, pyrite, calcite).

To replicate the observed isotopic offset, the model requires that enhanced levels of organic - carbon and pyrite burial continued a few hundred thousand years after peak organic - carbon burial, but that their isotope records responded differently due to dramatically different residence times for dissolved inorganic carbon and sulfate in seawater.