DC pole | Wartość | Język |
dc.contributor.author | Nowak, Katarzyna | - |
dc.contributor.author | Galuskina, Irina | - |
dc.contributor.author | Galuskin, Evgeny | - |
dc.date.accessioned | 2020-06-19T06:44:33Z | - |
dc.date.available | 2020-06-19T06:44:33Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Minerals, Vol. 10 (2020), Art. No. 470 | pl_PL |
dc.identifier.issn | 2075-163X | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/14626 | - |
dc.description.abstract | Orange greenockite (CdS) aggregates were found in a small fumarole at a burned coal
dump near Bytom, Upper Silesia, Poland and were studied using a variety of techniques in order
to determine their chemistry, morphology, and most importantly, the mechanism of crystal growth.
Greenockite rods, wires, and whiskers with bismuth drops on crystal tops are predominant in
these aggregates. Greenockite rods oriented sub-perpendicular to the substrate surface. The rod
thickness reaches 5–6 m and about 10 m in length. The catalyst bismuth drop has a diameter
comparable to the rod thickness. Fiber forms (wires and whiskers) are sub-parallel to the substrate
surface. The thickness of these forms is usually less than 2 m, and the length can be close to 1 mm.
The bismuth drop diameter can show a large excess over the fiber thickness. Catalyst drops on the
tops of whiskers began to change their form dynamically and exploded, spraying bismuth under
the electron beam e ect. Rods grow along the [01–10] direction, and whiskers and wires (axial
forms) along the [0001] direction. Greenockite rod crystals, carrying on top a relatively homogenous
bismuth catalyst drop, were formed on the heated substrate according to the VLS (vapor–liquid–solid)
mechanism at temperatures not lower than 270 C. Greenockite whiskers and wires grew just above
of the substrate surface according to the VQS (vapor–quasiliquid–solid) mechanism at temperatures
lower than 200 C. These mechanisms of growth have very rarely been recorded to occur in nature
and even less so in burning coal dumps. The cooperative growth e ects of the fiber greenockite
crystals were also described. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | greenockite | pl_PL |
dc.subject | whisker | pl_PL |
dc.subject | bismuth drop | pl_PL |
dc.subject | VLS mechanism | pl_PL |
dc.subject | VQS mechanism | pl_PL |
dc.subject | coal dump | pl_PL |
dc.subject | Bytom | pl_PL |
dc.subject | Poland | pl_PL |
dc.title | Greenockite Whiskers from the Bytom Burned Coal Dump, Upper Silesia, Poland | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.3390/min10050470 | - |
Pojawia się w kolekcji: | Artykuły (WNP)
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