Black Agates from Paleoproterozoic Pillow Lavas (Onega Basin, Karelian Craton, NW Russia): Mineralogy and Proposed Origin

Black Agates from Paleoproterozoic Pillow Lavas (Onega Basin, Karelian Craton, NW Russia): Mineralogy and Proposed Origin

The present study provides the first detailed investigation of black agates occurring in volcanic rocks of the Zaonega Formation within the Onega Basin (Karelian Craton, Fennoscandian Shield). Three characteristic texture types of black agates were identified: monocentric concentrically zoning agate...

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Bibliographic Details
Main Authors: Evgeniya N. Svetova, Svetlana Y. Chazhengina, Alexandra V. Stepanova, Sergei A. Svetov
Format: Article
Language:English
Published: MDPI AG 2021-08-01
Series:Minerals
Subjects:
agate
Raman spectroscopy
X-ray powder diffraction
electron scanning microscopy
Paleoproterozoic volcanics
carbonaceous matter
Online Access:https://www.mdpi.com/2075-163X/11/9/918

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