<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1993-8012</journal-id>
<journal-title><![CDATA[Minería y Geología]]></journal-title>
<abbrev-journal-title><![CDATA[Min. Geol.]]></abbrev-journal-title>
<issn>1993-8012</issn>
<publisher>
<publisher-name><![CDATA[EDUM. Universidad de Moa]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1993-80122021000100001</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Caracterización mineralógica de formaciones de hierro bandeadas en Vipongos, provincia Namibe, Angola]]></article-title>
<article-title xml:lang="en"><![CDATA[Mineralogical characterization of banded iron formations in Vipongos, Namibe province, Angola]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olimpio-Gonzalvez]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas-Purón]]></surname>
<given-names><![CDATA[Arturo Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[António-Caliata]]></surname>
<given-names><![CDATA[Loide Aurora]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Agostino Neto  ]]></institution>
<addr-line><![CDATA[ Luanda]]></addr-line>
<country>Angola</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Moa  ]]></institution>
<addr-line><![CDATA[ Holguín]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<volume>37</volume>
<numero>1</numero>
<fpage>1</fpage>
<lpage>29</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1993-80122021000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1993-80122021000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1993-80122021000100001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Las formaciones de hierro constituyen uno de los principales recursos minerales de la República de Angola; sin embargo, pocos estudios se refieren a las formaciones ferríferas bandeadas conocidas como BIF (Banded Iron Formation). Este artículo se enfoca en la caracterización mineralógica, mediante técnicas de difractometría y fluorescencia de rayos X, de las BIF existentes en la localidad de Vipongos, provincia de Namibe. En el sector central de Vipongos afloran los cuerpos mayores y mejor desarrollados, compuestos principalmente de cuarzo y hematita, con carbonatos (calcita y dolomita); se asocian a esquistos clorítico-micáceos (clinocloro, muscovita y biotita) estratificados y plegados. Existen, al nordeste, diques de rocas gabro-dioríticas que intruyen secuencias de esquistos verdes. Los rasgos litológicos y geoquímicos de las BIF en Vipongos permiten asignarlas a un ambiente de formación del tipo Algoma, al estar íntimamente asociadas a esquistos verdes y, en ocasiones, a rocas volcánicas. Por otra parte, la existencia de elementos menores (V, Co y Sr) y trazas (Ag, In y Ta) atestiguan la ocurrencia de actividad hidrotermal. Estos resultados apoyan la idea de que las BIF de Vipongos son una prolongación del Supergrupo Cinturón Móvil Damara, de Sudáfrica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT One of the main mineral resources of the Republic of Angola is iron formation; however, just some studies refer to formation containing banded iron known as BIF (Banded Iron Formation). This article focuses on the mineralogical characterization, by means of diffractometry and X-ray fluorescence techniques, of the existing BIF formation in Vipongos, Namibe province. In the central sector of Vipongos, the largest and best-developed bodies appear, composed mainly of quartz and hematite, with carbonates (calcite and dolomite); they are associated with stratified and folded chloritic-micaceous schists (clinochlor, muscovite and biotite). To the northeast, there are gabbro-dioritic rock dikes that intrude sequences of green schists. The lithological and geochemical features of BIF formation in Vipongos allow them to be assigned to an Algoma-type formation environment, as they are closely associated with green schists and sometimes with volcanic rocks. On the other hand, the existence of minor elements (V, Co and Sr) and traces (Ag, In and Ta) testify the occurrence of hydrothermal activity. These results support the idea that Vipongos BIFs are an extension of Damara Mobile Belt Supergroup from South Africa.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[formación bandeada]]></kwd>
<kwd lng="es"><![CDATA[hierro]]></kwd>
<kwd lng="es"><![CDATA[BIF]]></kwd>
<kwd lng="es"><![CDATA[chert]]></kwd>
<kwd lng="es"><![CDATA[magnetita]]></kwd>
<kwd lng="es"><![CDATA[hematita]]></kwd>
<kwd lng="es"><![CDATA[esquistos verdes]]></kwd>
<kwd lng="es"><![CDATA[Vipongos]]></kwd>
<kwd lng="en"><![CDATA[banded formation]]></kwd>
<kwd lng="en"><![CDATA[iron]]></kwd>
<kwd lng="en"><![CDATA[BIF]]></kwd>
<kwd lng="en"><![CDATA[chert]]></kwd>
<kwd lng="en"><![CDATA[magnetite]]></kwd>
<kwd lng="en"><![CDATA[hematite]]></kwd>
<kwd lng="en"><![CDATA[green shales]]></kwd>
<kwd lng="en"><![CDATA[Vipongos]]></kwd>
</kwd-group>
</article-meta>
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