О некоторых особенностях региональной поисковой алмазной минералогии

N. N. Zinchuk

Abstract


Проведен анализ результатов исследований мантийных модулей в кимберлитовых диатремах и прилегающим к ним ореолах рассеяния индикаторных минералов основных алмазоносных районов Сибирской платформы. Комплексно исследовались морфология и химизм гранатов, хромдиопсидов, клинопироксенов, пикроильменитов, хромитов и хромшпинелидов. В целом для каждого типа кимберлитовых пород, слагающих трубки, количество минералов алмазной ассоциации пропорционально алмазоносности той или иной разновидности кимберлита. Очень важно как всестороннее изучение кимберлитов, так и исследование самого алмаза – минерала с широким комплексом физико-химических и кристалломорфологических особенностей, отражающих своеобразие термодинамических и геохимических условий их образования, которые могут быть использованы в качестве типоморфных. Детальные комплексные исследования алмаза и его парагенетических минералов-спутников позволяют установить вещественно-индикационные параметры кимберлитового магматизма различной продуктивности и геолого-структурного положения кимберлитовых тел, а также решить вопросы о коренных источниках россыпей алмазов. С изучением индикаторных первичных минералов кимберлитов связано совершенствование направления исследований по прогнозированию и поискам коренных алмазных месторождений, создание наиболее рациональных схем переработки руды, обеспечивающих кристаллосберегающие технологии, а также расширение областей применения алмазов с учетом их реальной структуры и физических особенностей, в том числе выявления природных объектов с повышенным качеством алмазного сырья.

References


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