Journal
AMERICAN MINERALOGIST
Volume 100, Issue 11-12, Pages 2559-2565Publisher
MINERALOGICAL SOC AMER
DOI: 10.2138/am-2015-5104
Keywords
Crystal growth; crystallization; whewellite; weddellite; morphogenesis of calcium oxalate hydrates; microscopic fungi; Aspergillus niger; acid production; oxalate patina; bioweathering
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Funding
- Russian Foundation for Basic Research [13-05-00815-a]
- Saint Petersburg State University [1.37.151.2014, 3.38.243.2015]
- Zukunftskolleg at University of Konstanz
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The crystallization of calcium oxalates (weddellite and whewellite) by interaction of calcite marble with fungus Aspergillus niger, one of the most active stone destructors, was studied under in vitro conditions. The temporal development of acid production of fungus as well as the sequence of formation and morphogenesis of the growing oxalate hydrates crystals were investigated in detail. Furthermore, the relationships between morphology and growth conditions of crystals within the biofilms on the surface of carbonate rocks are discussed.
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