Minerals of the Kimberlitic Assemblage in Terrigenous Sediments of Latvia and Perspectives of Its Diamond Potential |
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| Authors: | D I Korpechkov V A Hodireva A S Savvaitov |
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| Institution: | (1) Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry (IGEM), Russian Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017, Russia;(2) Geological Museum, Latvian University, ul. Alberta 10, Riga, LV-1010, Latvia;(3) Institute of Geology, Latvian University, bulv. Rainisa 19, Riga, LV-1586, Latvia |
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| Abstract: | Four intermediate collectors of minerals of the kimberlitic association (MKA) are identified in the Latvian territory. They are confined to Upper Devonian (Gauya, Ogre, and Ketleri formations) and Quaternary sediments. Each intermediate collector is characterized by a certain assemblage of minerals. The present communication considers specific features of the MKA distribution within each collector, as well as chemical composition and grain surface character of separate MKAs. Based on the study of typomorphism of minerals and peculiarities of sedimentation in different geological epochs, scheme of the localization of bedrock KMA sources is proposed. It is supposed that the Latvian territory incorporates three bedrock (kimberlite-type) sources with different prospects for diamond potential. The diamond potential of one source located in northeastern Latvia is rather high. |
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