Über das Vorkommen von Chlorit im alpinen Salinar

Reinold, P.

doi:10.1007/bf01128084

Cited by 1 publication

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“…The Hallstatt chlorite (Table 5, column 3 and Figure 4, no. 3) occurs as an alteration product of basaltic tufts which were deposited in a halite-producing marine evaporite brine (Reinold, 1965 andBodine, 1971); the chlorite is somewhat richer in Fe 2+ and correspondingly depleted in Mg than the Retsof chlorite, but in other respects is essentially the same. Its occurrence as an alteration product of a pyrite-free but ferrous iron-rich rock undergoing recrystallization in an Mg-rich brine may well account for this variation but yet generate a composition close to the Si-maximum boundary of the "shale chlorite" region.…”

Section: Chlorite Composition and Genesismentioning

confidence: 99%

Chlorite and Illite Compositions from Upper Silurian Rock Salts, Retsof, New York

Bodine

1977

Clays and clay miner.

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Abstract~Chlorite and illite are the major clay minerals in silicate assemblages from a rock salt bed in the Vernon Formation (Upper Silurian) at Retsof, New York. Textural features and Br content of the salt indicate precipitation from shallow marine brine with no subsequent postdepositional recrystallization. Sample mounting procedure for electron microprobe analysis involves clay particle dispersion, sedimentation, and transferral to a planar silver print surface. The 001 face of the flake, rather than the conventional polished plane, constitutes the analyzed surface. with little variation among samples. The illite is distinctly less degraded than normal shale illite suggesting some recrystallization occurred in the hypersaline environment. Extensive compositional variation among illite flakes within each sample may reflect alteration of several different detrital micaceous minerals. The term hyperhalmyrolysis is introduced to denote mineral reactions which occur in the marine hypersaline environment.Diagenesis effected improved crystallinity and undoubtedly involved isochemical recrystallization of the bulk silicate assemblage. Metasomatism of the assemblage during diagenesis, however, appears to be negligible.

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Section: Chlorite Composition and Genesismentioning

confidence: 99%

Chlorite and Illite Compositions from Upper Silurian Rock Salts, Retsof, New York

Bodine

1977

Clays and clay miner.

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Über das Vorkommen von Chlorit im alpinen Salinar

Cited by 1 publication

References 5 publications

Chlorite and Illite Compositions from Upper Silurian Rock Salts, Retsof, New York

Chlorite and Illite Compositions from Upper Silurian Rock Salts, Retsof, New York

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