Dehydration and optical studies of alunogen, nontronite, and griffithite

Larsen, Erik Stoklund; Steiger, George

doi:10.2475/ajs.s5-15.85.1

Cited by 19 publications

(12 citation statements)

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“…) In 1935, several papers were published that added to the knowledge of the relationships of the various elements occurring in minerals of the montmorillonite group. The conclusion of Collins (1877) about the relationship of nontronite and montmorillonite, and those of Larsen and Steiger (1928) and Ross and Shannon (1925) about the relationships between beidellite and nontronite were confirmed by Gruner (1935), who concluded:…”

Section: Crystal Structuresupporting

confidence: 59%

“…Woody,' Calif. Nontronite with a somewhat different origin from sample 56, also described by Larsen and Steiger (1928). Found at the Woody locality and at many contact metamorphic garnet-hedenbergite zones.…”

Section: Montmorillonite-beidellite Seriesmentioning

confidence: 99%

“…Larsen and Steiger (1928) published a study of nontronite and compiled the chemical, dehydration, and optical properties of this and related minerals. They pointed out that nontronite and beidellite form an isomorphous series.…”

Section: Nontronitementioning

confidence: 99%

“…Woody, Calif. Nontronite from veinlets as much as 1 inch across in a garnet-pyroxene rock that represents roof pendents of a metamorphosed limestone included in granodiorite. Larsen and Steiger (1928). Earl V. Shannon, analyst. 67.…”

Section: Montmorillonite-beidellite Seriesmentioning

confidence: 99%

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Minerals of the montmorillonite group, their origin and relation to soils and clays

Ross¹,

Hendricks²

1945

Professional Paper

124

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Section: Crystal Structuresupporting

confidence: 59%

Section: Montmorillonite-beidellite Seriesmentioning

confidence: 99%

Section: Nontronitementioning

confidence: 99%

Section: Montmorillonite-beidellite Seriesmentioning

confidence: 99%

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Minerals of the montmorillonite group, their origin and relation to soils and clays

Ross¹,

Hendricks²

1945

Professional Paper

124

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“…Griffithite, a member with ferrous iron = 7.83 percent and ferric iron = 7.32 percent, was described by Larsen and Steiger (1928). Ross (1946) grouped it as an iron-rich saponite, a relationship confirmed by Faust (1955).…”

mentioning

confidence: 49%

Review of the Relationships in the Montmorillonite Group of Clay Minerals

Ross

1958

Clays clay miner. (Natl. Conf. Clays Clay Miner.)

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Since the publication of the paper on the minerals of the montmorillonite group by Ross and Hendricks (1945) some species have been added to the group, and minor changes in the acceptable species have become advisable. No radical changes are proposed, but a review of the members and their grouping will be presented. The acceptable dioctahedral members of the group appear to be montmorfllonite, nontronite and volehonskoite. Beidellite should be discontinued. The acceptable trioctahedral members of the group appear to include saponite, hectorite, sauconlte, stevensite and medmontite. Griffithite is probably a useful term for an iron-rich saponite. Representative chemical analyses and formulas have been assembled to illustrate relationships.

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