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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| Format: | Article |
| Language: | Russian |
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Sergo Ordzhonikidze Russian State University for Geological Prospecting
2019-05-01
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| Series: | Известия высших учебных заведений: Геология и разведка |
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| Online Access: | https://www.geology-mgri.ru/jour/article/view/390 |