A Complex Assemblage of Crystal Habits of Pyrite in the Volcanic Hot Springs from Kamchatka, Russia: Implications for the Mineral Signature of Life on Mars
In this study, the crystal habits of pyrite in the volcanic hot springs from Kamchatka, Russia were surveyed using scanning electron microscopy. Pyrite crystals occur either as single euhedral crystals or aggregates with a wide range of crystal sizes and morphological features. Single euhedral cryst...
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ftdoajarticles:oai:doaj.org/article:154b421f7d814fe69799bce603a3b7b5 2023-05-15T16:58:45+02:00 A Complex Assemblage of Crystal Habits of Pyrite in the Volcanic Hot Springs from Kamchatka, Russia: Implications for the Mineral Signature of Life on Mars Min Tang Yi-Liang Li 2020-06-01T00:00:00Z https://doi.org/10.3390/cryst10060535 https://doaj.org/article/154b421f7d814fe69799bce603a3b7b5 EN eng MDPI AG https://www.mdpi.com/2073-4352/10/6/535 https://doaj.org/toc/2073-4352 doi:10.3390/cryst10060535 2073-4352 https://doaj.org/article/154b421f7d814fe69799bce603a3b7b5 Crystals, Vol 10, Iss 535, p 535 (2020) Kamchatka hot springs pyrite complexity of crystal habits Mars Crystallography QD901-999 article 2020 ftdoajarticles https://doi.org/10.3390/cryst10060535 2022-12-30T20:25:49Z In this study, the crystal habits of pyrite in the volcanic hot springs from Kamchatka, Russia were surveyed using scanning electron microscopy. Pyrite crystals occur either as single euhedral crystals or aggregates with a wide range of crystal sizes and morphological features. Single euhedral crystals, with their sizes ranging from ~200 nm to ~40 µm, exhibit combinations of cubic {100}, octahedral {111}, and pyritohedral {210} and {310} forms. Heterogeneous geochemical microenvironments and the bacterial activities in the long-lived hot springs have mediated the development and good preservation of the complex pyrite crystal habits: irregular, spherulitic, cubic, or octahedral crystals congregating with clay minerals, and nanocrystals attaching to the surface of larger pyrite crystals and other minerals. Spherulitic pyrite crystals are commonly covered by organic matter-rich thin films. The coexistence of various sizes and morphological features of those pyrite crystals indicates the results of secular interactions between the continuous supply of energy and nutritional elements by the hot springs and the microbial communities. We suggest that, instead of a single mineral with unique crystal habits, the continuous deposition of the same mineral with a complex set of crystal habits results from the ever-changing physicochemical conditions with contributions from microbial mediation. Article in Journal/Newspaper Kamchatka Directory of Open Access Journals: DOAJ Articles Crystals 10 6 535 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Kamchatka hot springs pyrite complexity of crystal habits Mars Crystallography QD901-999 |
spellingShingle |
Kamchatka hot springs pyrite complexity of crystal habits Mars Crystallography QD901-999 Min Tang Yi-Liang Li A Complex Assemblage of Crystal Habits of Pyrite in the Volcanic Hot Springs from Kamchatka, Russia: Implications for the Mineral Signature of Life on Mars |
topic_facet |
Kamchatka hot springs pyrite complexity of crystal habits Mars Crystallography QD901-999 |
description |
In this study, the crystal habits of pyrite in the volcanic hot springs from Kamchatka, Russia were surveyed using scanning electron microscopy. Pyrite crystals occur either as single euhedral crystals or aggregates with a wide range of crystal sizes and morphological features. Single euhedral crystals, with their sizes ranging from ~200 nm to ~40 µm, exhibit combinations of cubic {100}, octahedral {111}, and pyritohedral {210} and {310} forms. Heterogeneous geochemical microenvironments and the bacterial activities in the long-lived hot springs have mediated the development and good preservation of the complex pyrite crystal habits: irregular, spherulitic, cubic, or octahedral crystals congregating with clay minerals, and nanocrystals attaching to the surface of larger pyrite crystals and other minerals. Spherulitic pyrite crystals are commonly covered by organic matter-rich thin films. The coexistence of various sizes and morphological features of those pyrite crystals indicates the results of secular interactions between the continuous supply of energy and nutritional elements by the hot springs and the microbial communities. We suggest that, instead of a single mineral with unique crystal habits, the continuous deposition of the same mineral with a complex set of crystal habits results from the ever-changing physicochemical conditions with contributions from microbial mediation. |
format |
Article in Journal/Newspaper |
author |
Min Tang Yi-Liang Li |
author_facet |
Min Tang Yi-Liang Li |
author_sort |
Min Tang |
title |
A Complex Assemblage of Crystal Habits of Pyrite in the Volcanic Hot Springs from Kamchatka, Russia: Implications for the Mineral Signature of Life on Mars |
title_short |
A Complex Assemblage of Crystal Habits of Pyrite in the Volcanic Hot Springs from Kamchatka, Russia: Implications for the Mineral Signature of Life on Mars |
title_full |
A Complex Assemblage of Crystal Habits of Pyrite in the Volcanic Hot Springs from Kamchatka, Russia: Implications for the Mineral Signature of Life on Mars |
title_fullStr |
A Complex Assemblage of Crystal Habits of Pyrite in the Volcanic Hot Springs from Kamchatka, Russia: Implications for the Mineral Signature of Life on Mars |
title_full_unstemmed |
A Complex Assemblage of Crystal Habits of Pyrite in the Volcanic Hot Springs from Kamchatka, Russia: Implications for the Mineral Signature of Life on Mars |
title_sort |
complex assemblage of crystal habits of pyrite in the volcanic hot springs from kamchatka, russia: implications for the mineral signature of life on mars |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/cryst10060535 https://doaj.org/article/154b421f7d814fe69799bce603a3b7b5 |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
Crystals, Vol 10, Iss 535, p 535 (2020) |
op_relation |
https://www.mdpi.com/2073-4352/10/6/535 https://doaj.org/toc/2073-4352 doi:10.3390/cryst10060535 2073-4352 https://doaj.org/article/154b421f7d814fe69799bce603a3b7b5 |
op_doi |
https://doi.org/10.3390/cryst10060535 |
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Crystals |
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10 |
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535 |
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1766050847793348608 |