<?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>S1993-80122022000200099</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Validación de los modelos de estimación de la ley de oro en el sector Three Hills del yacimiento Golden Hill]]></article-title>
<article-title xml:lang="en"><![CDATA[Validation of Au grade estimation models in a sector of the Golden Hill deposit]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arias-delToro]]></surname>
<given-names><![CDATA[José Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carballo-Peña]]></surname>
<given-names><![CDATA[Alain]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Estévez-Cruz]]></surname>
<given-names><![CDATA[Elmidio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Oficina Nacional de Recursos Minerales  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Moa  ]]></institution>
<addr-line><![CDATA[ Holguín]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Pinar del Río  ]]></institution>
<addr-line><![CDATA[ Pinar del Río]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>38</volume>
<numero>2</numero>
<fpage>99</fpage>
<lpage>115</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1993-80122022000200099&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1993-80122022000200099&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1993-80122022000200099&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La validación de los modelos de estimación de leyes en el proceso de estimación de recursos minerales garantiza la calidad y confiabilidad de los resultados y la correcta definición de las reservas minerales, bases para una planificación minera más objetiva. La presente investigación expone los resultados de la validación de los modelos de estimación de la ley de Au en el sector Three Hills del yacimiento aurífero Golden Hill (provincia de Las Tunas), utilizado como caso de estudio. Se utilizó la información obtenida en las campañas de exploración detallada y de exploración de explotación, así como los modelos de estimación de la ley de Au; estos modelos fueron comparados con las curvas patrones de la ley, el tonelaje y la cantidad de metal, obtenidas por simulación geoestadística para 10 escenarios equi-probables simulados de la ley de Au. Se propuso un procedimiento que permitió validar los modelos de estimación de la ley Au en depósitos similares a partir de la pérdida o el exceso de la cantidad de metal entre las curvas tonelaje-ley, la obtenida en los modelos de estimación de dos momentos (etapas 1 y 2) de la exploración y explotación y las curvas patrones predictivas medias de la ley, el tonelaje y cantidad de metal simuladas. Se demuestra que el modelo de la etapa 1 subvalora los estimados por lo que no debe considerarse para definir los recursos de oro. El modelo de la etapa 2, aunque se aproxima a las curvas-patrones simuladas, también debe ser reelaborado.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Validation of grade estimation models in the mineral resource estimation process guarantees the quality and reliability of results and the correct definition of mineral reserves in the most objective mining planning possible. This research presents the results of the validation of Au grade estimation models in Three Hills sector of the Golden Hill gold deposit (Las Tunas province), used as a case study. We worked with the information obtained in the detailed exploration and exploitation exploration campaigns, as well as with the estimation models of the Au grade; these models were compared with the standard curves of grade, tonnage and metal quantity, obtained by Geostatistical simulation for 10 simulated equiprobable Au grade scenarios. A procedure is proposed that allows validating the Au grade estimation models in similar deposits, based on the loss or excess of the amount of metal between the tonnage-grade curves, those obtained in the estimation models in two moments (stages 1 and 2) of exploitation exploration and the average predictive standard curves of simulated grade, tonnage and amount of metal. It is shown that stage 1 model should not be considered for defining gold resources, since it undervalues &#8203;&#8203;the estimates, although the stage 2 model is close to the simulated pattern-curves, it must also be reworked.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[validación]]></kwd>
<kwd lng="es"><![CDATA[modelos de estimación]]></kwd>
<kwd lng="es"><![CDATA[simulación geoestadística]]></kwd>
<kwd lng="es"><![CDATA[tonelaje-ley]]></kwd>
<kwd lng="es"><![CDATA[yacimiento aurífero Golden Hill]]></kwd>
<kwd lng="en"><![CDATA[model validation]]></kwd>
<kwd lng="en"><![CDATA[estimation models]]></kwd>
<kwd lng="en"><![CDATA[Au grade]]></kwd>
<kwd lng="en"><![CDATA[Geostatistical simulation]]></kwd>
<kwd lng="en"><![CDATA[tonnage-grade curves]]></kwd>
<kwd lng="en"><![CDATA[Golden Hill goldfield]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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