Myrmekite and Albite in some Granites of the New England Batholith, new south Wales

Phillips, Evan R.

doi:10.1080/00167616408728558

Cited by 25 publications

(15 citation statements)

References 6 publications

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“…These forms are closely related to myrmekite developed around plagioclase inclusions in subhedral alkali feldspar megacrysts (Fig. All of these examples come from massive, undeformed granitoids and they provide examples of myrmekite development which may be explained by the Schwantke model (Phillips, 1964;Phillips & Carr, 1973). 1C).…”

Section: Differences In Myrmekite Morphologymentioning

confidence: 92%

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On polygenetic myrmekite

Phillips

1980

Geol. Mag.

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A brief review of Becke's (1908) replacement and Schwantke's (1909) exsolution models for myrmekite genesis and further consideration of the morphology and spatial distribution of myrmekite as outlined by Phillips (1974) lead to the conclusion that both hypotheses have a place in explaining the origin of myrmekite. The Schwantke model is generally best applied, for example, to high-level undeformed massive granitoids and the Becke model to deformed metamorphic rocks. The latter hypothesis and a third model involving interaction between exsolution and replacement (Ashworth, 1972) may be used especially to explain the association of muscovite and myrmekite in rocks whose mineral assemblages have undergone retrograde modification, involving either redistribution of Na, Ca and K by local metasomatic reactions among the mineral grains, or metasomatic change of bulk rock composition.

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Section: Differences In Myrmekite Morphologymentioning

confidence: 92%

“…Becke, 1908;Sederholm, 1916;Barker, 1970) and solid-state exsolution (e.g. Schwantke, 1909;Phillips, 1964;Hubbard, 1966). For reasons given elsewhere (Phillips, 1974), I believe that the first three models are either of limited application or are based on premises that are incorrect and they are excluded from any further consideration.…”

Section: The Hypothesesmentioning

confidence: 99%

On polygenetic myrmekite

Phillips

1980

Geol. Mag.

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“…Considerable overlap between the crystallisation ranges of the felsic minerals is likely. Perthite, albite rims on plagioclase, and myrmekite are believed to have developed by subsolidus reorganisation of plagioclase exsolved from K-feldspar as suggested by Phillips (1964).…”

Section: Textures and Crystallisation Historymentioning

confidence: 93%

The petrology of the Mt Manypeaks Adamellite and associated high‐grade metamorphic rocks near Albany, Western Australia

Stephenson¹

1973

Journal of the Geological Society of Australia

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“…The major intrusions of the northern part of the batholith (the Undercliffe Falls porphyritic adamellite, the Stanthorpe adamellite and the Ruby Creek granite, Phillips, 1964Phillips, , 1968a displace Permian " Boorook " strata (Voisey, 1958) which are essentially unmetamorphosed sandstones, shales and volcanics. Additional wall-rock includes small isolated mafic relics (locally only metres across) which outcrop sporadically through the adamellites.…”

Section: Field Settingmentioning

confidence: 99%