| Reference Type | Journal (article/letter/editorial) |
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| Title | Reconsideration of ‘soda-minettes’ |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Bachinski, Sharon W. | Author |
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| Year | 1986 (June) | Volume | 50 |
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| Page(s) | 199-204 | Issue | 356 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_50/50-356-199.pdf+ |
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| DOI | doi:10.1180/minmag.1986.050.356.02Search in ResearchGate |
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| Mindat Ref. ID | 3839 | Long-form Identifier | mindat:1:5:3839:7 |
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| GUID | 9bdf3e9c-0f5a-4178-8a20-b9f91a0f3177 |
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| Full Reference | Bachinski, Sharon W. (1986) Reconsideration of ‘soda-minettes’. Mineralogical Magazine, 50 (356) 199-204 doi:10.1180/minmag.1986.050.356.02 |
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| Plain Text | Bachinski, Sharon W. (1986) Reconsideration of ‘soda-minettes’. Mineralogical Magazine, 50 (356) 199-204 doi:10.1180/minmag.1986.050.356.02 |
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| In | (1986, June) Mineralogical Magazine Vol. 50 (356) Mineralogical Society |
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| Abstract/Notes | AbstractIt is shown here that dyke rocks of type localities for ‘soda-minettes’ are not minettes (= lamprophyres dominated by phlogopite and K-rich feldspar). It has long been suggested that ‘soda-minette’ also be applied to otherwise normal minettes from elsewhere that carry modally variable amounts of groundmass aegirine and/or, more commonly, arfvedsonitic to riebeckitic amphibole. Despite the presence of sodic pyriboles, these rocks are poorer in Na2O then minettes lacking these phases. ‘Soda-minette’ is thus misleading and self-contradictory to the many petrologists to whom ‘soda-’ legitimately connotes that the rock in question either has K/Na < 1 and/or is rich in albitic feldspar. To eliminate this ambiguity it is recommended, with the approval of twenty-six other petrologists, that ‘soda-minette’ no longer be used as a rock name. As minettes with Na-pyribole(s) are markedly K-rich and most are both ultrapotassic and peralkaline, independent of the modal abundance of the Na-pyrobile, it is suggested that one of these three chemical characteristics be utilized adjectivally in naming these minettes. |
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