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Abstract <p>A representative collection of diamonds from the Gusiny Creek placer at Anabar in Yakutia has been studied using morphological analysis, infrared spectroscopy (IR), and electron paramagnetic resonance (EPR). Indicative feature of diamonds from this placer is a high content of the variety V and VII diamonds (according to the classification of Yu.L. Orlov) with a decreased proportion of curve-faced dodecahedroids as compared to other Anabar placers. The lower proportion of curve-faced dodecahedroids is correlated with a decreased abundance of reliefs and hatching on the crystal surface. An increased content of gray diamonds and diamonds with graphite inclusions is also an indicative feature. The proportion of colorless crystals is only 5.9%. More than 11% of the crystals are luminescent under 254 nm ultraviolet light. Diamonds from the Gusiny Creek placer partly enrich the Nizhny site of the Ebelyakh placer, which results in a higher diamond content, but not a higher quality of diamonds.</p>

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The Morphology, Color, and Spectroscopic Characteristics of Diamonds from the Gusiny Creek Placer, Anabar, Yakutia

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • S. V. Vyatkin,
  • G. Yu. Kriulina,
  • V. K. Garanin,
  • L. D. Bardukhinov

摘要

Abstract

A representative collection of diamonds from the Gusiny Creek placer at Anabar in Yakutia has been studied using morphological analysis, infrared spectroscopy (IR), and electron paramagnetic resonance (EPR). Indicative feature of diamonds from this placer is a high content of the variety V and VII diamonds (according to the classification of Yu.L. Orlov) with a decreased proportion of curve-faced dodecahedroids as compared to other Anabar placers. The lower proportion of curve-faced dodecahedroids is correlated with a decreased abundance of reliefs and hatching on the crystal surface. An increased content of gray diamonds and diamonds with graphite inclusions is also an indicative feature. The proportion of colorless crystals is only 5.9%. More than 11% of the crystals are luminescent under 254 nm ultraviolet light. Diamonds from the Gusiny Creek placer partly enrich the Nizhny site of the Ebelyakh placer, which results in a higher diamond content, but not a higher quality of diamonds.