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Gemological characteristics of jewelry-ornamental septaria of the Ulyanovsk region

Septaria of the Ulyanovsk region are high-quality jewelry and ornamental material. Septaria are associated with lower Cretaceous sediments and are located in the coastal cliffs and the beach area of the Volga river. Septaria consist mainly of calcite — 89 wt. %. Aluminosilicates, quartz, pyrite, fer...

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Wedi'i Gadw mewn:
Manylion Llyfryddiaeth
Prif Awdur: D. A. Petrochenkov
Fformat: Artigo
Iaith:Russo
Cyhoeddwyd: Sergo Ordzhonikidze Russian State University for Geological Prospecting 2019-05-01
Cyfres:Известия высших учебных заведений: Геология и разведка
Pynciau:
Mynediad Ar-lein:https://www.geology-mgri.ru/jour/article/view/390
Tagiau: Ychwanegu Tag
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