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Prof. dr hab. Alexei Nikolaievich Platonov (1937–2016)

Sachanbiński M., Szuszkiewicz A.

Mineralogia

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2016

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Vol. 47, iss. 1/4

3--5

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Green to blue-green quartz from Rakowice Wielkie (Sudetes, south-western Poland) – a re-examination of prasiolite-related colour varieties of quartz

Platonov A. N., Szuszkiewicz A.

Mineralogia

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2015

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Vol. 46, iss. 1/2

1--12

EN

The green colour of prasiolite, defined as naturally occurring transparent macrocrystalline α-quartz with primary colouration, results from the optical absorption centred at ∼13,660 cm-1 and attributed to the FeVI2+→FeVI3+ intervalence charge transfer (Platonov et al. 1992). However, optical absorption spectroscopy of blue-green to green quartz from Rakowice Wielkie, Sudetes, south-western Poland, shows that its primary colouration results from the combination of this band and absorptions at ∼18,500 cm-1 and ∼16,250 cm-1. The first is assigned to a hole centre Fe4+s(Fe3+s-e- ) combined with an electron centre Fe2+I6(Fe3+I6+e- ), while the second from AlO4 4- defects. The quartz is blue-green if the 18,500 cm-1 prevails and becomes pale green if the 16,250 cm-1 band predominates. These colours seem to represent intermediate colour varieties between amethyst and prasiolite. We also suggest that spectral features of coloured quartz varieties might be useful indicators of changes in the physical- and chemical characteristics of the mineral-forming fluids.

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The Julianna pegmatite vein system at the Piława Górna Mine, Góry Sowie Block, SW Poland – preliminary data on geology and descriptive mineralogy

Szuszkiewicz A., Szełęg E., Pieczka A., Ilnicki S., Nejbert K., Turniak K., Banach M., Łodziński M., Różniak R., Michałowski P.

Geological Quarterly

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2013

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Vol. 57, No. 3

467–-484

EN

The newly discovered Julianna pegmatitic system from the Piława Górna Quarry (the Góry Sowie Block, Sudetes Mts., NE margin of the Bohemian Massif) is described in terms of geological setting, petrography and descriptive mineralogy. The system represents the largest pegmatitic occurrence in the Polish Sudetes and consists of a complex network of cogenetic rare-element granitic pegmatites that intruded into tectonized amphibolite as discordant dikes. The pegmatites range from barren and weakly zoned to texturally well-differentiated ones that are composed of a fine-grained border zone, coarse-grained wall zone, graphic and blocky feldspar intermediate zones and a quartz core. Unidirectional and skeletal solidification textures are well-developed. The Julianna pegmatites consist of rock-forming plagioclase (ŁAn39), microcline, quartz and biotite accompanied mostly by accessory to minor muscovite, tourmaline, garnet and beryl. They crystallized from anatectic melt of hybrid NYF (niobium-yttrium-fluorine) + LCT (lithium-cesium-tantalum) geochemical characteristics. Pegmatites with a low to moderate degree of fractionation, that dominate in the Julianna system, bear NYF-signature accessory minerals, such as allanite-(Ce), columbite-, euxenite- and samarskite-group minerals, fergusonite-(Y) and gadolinite-(Y). However rare dikes that attained a very high degree of fractionation contain typical minerals of LCT-signature including tourmalines of the elbaite-olenite-rossmanite series, lepidolite, lithiophilite, spodumene, Cs-rich beryl and pollucite.

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Skuteczność biocydów do zastosowań zewnętrznych w budownictwie

Piontek M., Łuszczyńska K., Lechów H., Szuszkiewicz A., Czyżewska W.

Ochrona przed Korozją

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2012

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nr 1

2-7

PL

W Instytucie Inżynierii Środowiska Uniwersytetu Zielonogórskiego prowadzone były badania nad wpływem trzech biocydów na organizmy deteriogenne, porastające zewnętrzne przegrody i elementy budowlane. Przy zastosowaniu analizy mikroskopowej prób świeżych i po hodowli laboratoryjnej stwierdzono, że w biofilmach na północnej elewacji budynku najliczniej występowały aerofityczne sinice (6 gatunków), po jednym przedstawicielu glonów i grzybów pleśniowych oraz drobne kolonie trzech gatunków porostów. Na badane powierzchnie nałożono preparaty biobójcze i metodą wizualną oceniono ich skuteczność. Stwierdzono, że zależy ona od składu chemicznego preparatów oraz rodzaju powierzchni. Na kamiennym murku wysoko skutecznym okazał się preparat, który w swoim składzie chemicznym zawierał czwartorzędowe sole amoniowe, benzyl i alkilodimetylowe chlorki amonu. Badania nad wykorzystaniem płytek kontaktowych do oznaczania zanieczyszczenia mikrobiologicznego powierzchni wykazały, że nie znajdują one zastosowania w analizie nalotów na materiałach budowlanych. W pracy opisano również wpływ mikrokolonii glonów i innych organizmów na badane materiały oraz skutki do jakich może dojść poprzez zaniedbania w projektowaniu, wykonawstwie i eksploatacji budynku. Wyniki badań wykazały jakie mikroorganizmy zasiedlały badane przegrody oraz jaka była skuteczność wybranych środków biobójczych.

EN

Investigations on the influence of three biocides on deteriogenic microorganisms growing on exterior walls and construction elements were carried out in the Institute of Environmental Engineering at Zielona Góra University. Using microscopic analysis of fresh samples and following laboratory incubation, it was found that the biofilms covering the northern facade of the building contained aerophytic cyanobacteria (6 species), one representative of algae and fungi and small colonies of three species of lichens. Biocides were applied on the test surfaces and their efficacy was visually assessed. It was found that the efficacy of the biocides depends on their chemical composition and the type of surface being tested. The preparation applied on the stone wall proved highly effective. It contained quaternary ammonium salts, benzyl and alkyldimethyl ammonium chlorides. Research on the use of contact plates for the determination of microbial surface contamination has shown that the plates are useless for analyzing materials used for coating building materials. The paper also describes the impact of algae and other microorganism colonies on the test materials and the results of negligence in the design, construction and use of the building. The obtained results showed which microorganisms inhabited the examined walls and allow for evaluation of the efficacy of the applied biocides.

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Geopark Karkonosze - georóżnorodność i geoturystyka

Knapik R., Migoń P., Szuszkiewicz A., Aleksandrowski P.

Przegląd Geologiczny

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2011

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Vol. 59, nr 4

311-311

EN

The Certificate of a National Geopark was awarded to the Karkonosze National Park, along with its buffer zone, in September 2010. Geodiversity of the Karkonosze Mountains, subject to the comprehensive assessment in 2008-2009, resides mainly in the variety of geological, mineralogical and geomorphological phenomena. In addition, the legacy of mining and mineral prospecting is abundant. Many of the natural phenomena make the Karkonosze Mountains an exceptional area in Poland, and are of outstanding value if considered within the European context. The value of abiotic nature of the Karkonosze is promoted through multiple activities in the field of geotourism and ecological education, including construction of an extensive network of geosites, marked tourist paths, and educational trails with information boards. Further promotion of geodiversity of the Karkonosze is carried out in cooperation with the adjacent Krkonošský narodní park on the Czech side of the mountains, aiming at an establishment of a bilateral Polish-Czech Geopark Krkonoše/Karkonosze, within the framework of the European Geopark Network.