Autor: Siuda, Rafał - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Recently formed arsenates from an abandoned mine in Radzimowice (SW Poland) and the conditions of their formation
Autorzy:: Siuda, Rafał
Januszewska, Anna
Powiązania:: https://bibliotekanauki.pl/articles/24024699.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: Bukovskyite
kaňkite
zýkaite
pitticite
iron arsenates
oxidation zone
Radzimowice
bukowskit
kankit
zykait
pitticit
arseniany
żelazo
strefa aeracji
minerały wtórne
Opis:: In the mining galleries of the abandoned Au-As mine in Radzimowice, diverse groups of secondary arsenates crystallized recently. They form several characteristic assemblages. In the first of them the typical minerals are bukovskýite and melanterite. The second group of secondary arsenates includes scorodite, kaňkite, zýkaite, and pitticite. The third assemblage includes Co-Ni-Mg arsenates of the erythrite-annabergite-hörnesite series. The first assemblage crystallized in a zone with a very high activity of sulphate and arsenate ions and where the pH varies within a narrow range of 2.0-3.5. The second group of secondary arsenates formed in the acidic zone. The minerals identified here suggest pH variation within fairly wide ranges, from about 2.0 to 5.5. Contrary to the first and second mineral assemblage, the Co-Ni-Mg arsenates formed under different geochemical conditions. Their crystallization took place under weak acidic to neutral conditions.
Źródło:: Acta Geologica Polonica; 2022, 72, 4; 423--442
0001-5709
Pojawia się w:: Acta Geologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Minerały wtórne z kopalni Breiner (Maramureş, Rumunia) jako przykład tworzącej się współcześnie mineralizacji wtórnej
Secondary minerals from the Breiner mine (Maramureş, Romania) as an example of recently formed secondary mineralization
Autorzy:: Januszewska, Anna
Kruszewski, Łukasz
Siuda, Rafał
Powiązania:: https://bibliotekanauki.pl/articles/20232295.pdf
Data publikacji:: 2023
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: minerały wtórne
kopalnia Breinera
tooeleit
wattevilleit
zaheryt
secondary minerals
Breiner mine
tooeleite
wattevilleite
zaherite
Opis:: The former gold and silver mine of Breiner, is located in the village of Băiuţ, in the mining area of Băiuţ-Tibleş (Maramureş, Romania). The local polymetallic occurrences are characterized by a rich sulfide (Cu, Pb, Zn sulfides/sulfosalts) and arsenic mineralization. While the primary mineralization is relatively well known, the diverse paragenesis of second- ary mineralization has never been the subject of detailed research. Based on diffraction studies, several species of weathered minerals have been identified, most of which have never been reported in the study area before. The dominant minerals in the mine belong to the melanterite and halotrichite groups. The occurrence of rare phases on a global scale has also been observed - zaherite Al12(SO4)5(OH)26 20H2O, tooeleite Fe6(AS3+O3)4(SO4)(OH)44H2 and wattevilleite - a species with uncertain chemistry, possibly Na2Ca(SO4)24H2O. The formation of these parageneses is related to currently occurring weathering processes of primary ore mineralization that undergoes decomposition under low pH conditions.
Źródło:: Przegląd Geologiczny; 2023, 71, 4; 174-178
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Wpływ dawnego górnictwa rud polimetalicznych w Czarnowie na wybrane elementy środowiska przyrodniczego w świetle badań geochemicznych
The impact of former mining of polymetallic ore in Czarnów on selected elements of the natural environment in the light of geochemical studies
Autorzy:: Januszewska, Anna
Siuda, Rafał
Dembicz, Iwona
Powiązania:: https://bibliotekanauki.pl/articles/20239682.pdf
Data publikacji:: 2023
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: arsen
zanieczyszczenie gleby
metale ciężkie
dawne górnictwo
arsenic
soil contamination
heavy metals
former mining
Opis:: The exploitation of mineral resources can lead to the migration of potentially harmful substances into the natural environment, resulting in environmental degradation and pollution. The mining of polymetallic ores can have severe consequences due to the release of toxic elements such as arsenic (As) and heavy metals. Among the areas contaminated with toxic elements is the village of Czarnów in the Rudawy Janowickie mountains, where mining activities related to copper, arsenic, and gold extraction were likely initiated in the Middle Ages. This study aimed to investigate the geochemical anomalies of arsenic and heavy metals in the soil and their uptake by plants in this region. Portable XRF spectrometry was used to perform geochemical soil analyses in the former mining sites. The results showed clear geochemical anomalies in the arsenic and heavy metal content of soils, with concentrations exceeding permissible standards. The highest concentrations of As were found in the mining dumps, exceeding 100 000 ppm. Phytogeochemical analyses were conducted on raspberry leaves (Rubus idaeus) to determine the content of arsenic, lead, zinc, and copper using the ICP-MS method. The findings indicated that the high levels of individual elements found may pose a risk to the environment. The study demonstrates that even abandoned mining sites can be a source of pollution, and long-term monitoring of these areas is essential to mitigate their potential environmental impact.
Źródło:: Przegląd Geologiczny; 2023, 71, 4; 179-183
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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