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Mineral redox buffer

In geology, a redox buffer is an assemblage of minerals or compounds that constrains oxygen fugacity as a function of temperature. Knowledge of the redox conditions (or equivalently, oxygen fugacities) at which a rock forms and evolves can be important for interpreting the rock history. Iron, sulfur, and manganese are three of the relatively abundant…

Characters, Minerals, rock types, and characteristic buffers & Redox effects and sulfur

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Minerals, rock types, and characteristic buffers

Silicate mineralOxide mineralOlivineLatticeMagnesium
21 related topics

Redox effects and sulfur

SulfidePyritePyrrhotitePolymorphMarcasite
16 related topics

Common redox buffers and mineralogy

Earth's crustMagnetiteHematiteNickelFayalite
7 related topics

Overview

FugacityRedoxIronSulfurManganese
9 related topics

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Overview

Common redox buffers and mineralogy

Minerals, rock types, and characteristic buffers

Redox effects and sulfur

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Mineral redox buffer

Nodes58
Edges57
Triples6
Avg. degree1.97
Density0.034483
Components1

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Important terminology

buffer redox minerals oxygen oxidizing rock conditions iron fugacities present fugacity fe3 sulfur rocks reducing earth's fe2 elements oxidation sedimentary

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
olivine if it is present as Fe2instance ofIron may only enter minerals0.80text
magnesiuminstance ofElements in olivine0.80text
howeverinstance ofElements in olivine0.80text
stabilize olivine containing Fe2instance ofElements in olivine0.80text
pyroxene can still contain Fe3instance ofminerals0.80text
pyriteinstance ofRedox effects and sulfurSulfide minerals0.80text

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