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<article article-type="research-article">
<front>
<journal-meta>
<journal-id journal-id-type="archive">gsminmag</journal-id>
<journal-title>Mineralogical Magazine</journal-title>
<abbrev-journal-title abbrev-type="full">Mineralogical Magazine</abbrev-journal-title>
<issn pub-type="ppub">0026-461X</issn>
<publisher>
<publisher-name>Mineralogical Society</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.1180/minmag.1986.050.356.02</article-id>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Petrology</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>Reconsideration of &#x2018;Soda-Minettes&#x2019;</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author" deceased="yes">
<name>
<surname>Bachinski</surname>
<given-names>Sharon W.</given-names>
</name>
<xref ref-type="author-notes" rid="FN1">*</xref>
<aff>Department of Geology, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada</aff></contrib></contrib-group>
<author-notes>
<fn fn-type="other" id="FN1"><label>*</label><p>The editors regret to report the death of Sharon Bachinski on 14 March 1986.</p></fn></author-notes>
<pub-date pub-type="ppub">
<month>6</month>
<year>1986</year>
</pub-date>
<volume>50</volume>
<issue>356</issue>
<fpage>199</fpage>
<lpage>204</lpage>
<history>
<date date-type="received">
<day>22</day>
<month>7</month>
<year>1985</year>
</date>
<date date-type="rev-recd">
<day>12</day>
<month>9</month>
<year>1985</year>
</date></history>
<copyright-statement>Copyright &#x00A9; 1986, The Mineralogical Society</copyright-statement>
<copyright-year>1986</copyright-year>
<abstract>
<title>Abstract</title>
<p>It is shown here that dyke rocks of type localities for &#x2018;soda-minettes&#x2019; are not minettes (= lamprophyres dominated by phlogopite and K-rich feldspar). It has long been suggested that &#x2018;soda-minette&#x2019; 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 Na<sub>2</sub>O then minettes lacking these phases. &#x2018;Soda-minette&#x2019; is thus misleading and self-contradictory to the many petrologists to whom &#x2018;soda-&#x2019; legitimately connotes that the rock in question either has K/Na &#x003C; 1 and/or is rich in albitic feldspar. To eliminate this ambiguity it is recommended, with the approval of twenty-six other petrologists, that &#x2018;soda-minette&#x2019; 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.</p></abstract>
<kwd-group>
<title>Keywords</title>
<kwd>minette</kwd>
<kwd>soda-minette</kwd>
<kwd>lamprophyre</kwd>
</kwd-group>
</article-meta>
</front>
</article>
