Rare Biogeochemical Phenomenon Associated to Manganese Patinas on Mural Painting and Granite Ashlars
This article discloses a rare and outstanding type of Mn-rich black-blue patina found on mural painting and granite ashlars located in the church of Sta. Marinha, north of Portugal, and conjectures the phenomenon associated to the appearance of such patinas in different surface materials. This Mn-pa...
Main Authors: | , , , , , , , , |
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Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-07-01
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Series: | Coatings |
Subjects: | |
Online Access: | https://www.mdpi.com/2079-6412/11/8/917 |