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Third Worldwide Occurrence of Juangodoyite, Na2Cu(CO3)2, and Other Secondary Na, Cu, Mg, and Ca Minerals in the Fore-Sudetic Monocline (Lower Silesia, SW Poland)

1
Institute of Geological Sciences, Polish Academy of Sciences, Twarda 51/55 Str., 00-818 Warszawa, Poland
2
Faculty of Earth Sciences and Environmental Management, University of Wrocław, Plac Maksa Borna 9, 50-204 Wrocław, Poland
3
Institute of Geochemistry, Mineralogy and Petrology, Faculty of Geology, University of Warsaw, Żwirki i Wigury 93 Str., 02-089 Warsaw, Poland
4
Faculty of Natural Sciences, University of Silesia, Będzińska 60 Str., 41-205 Sosnowiec, Poland
*
Author to whom correspondence should be addressed.
Minerals 2020, 10(2), 190; https://doi.org/10.3390/min10020190
Received: 31 December 2019 / Revised: 12 February 2020 / Accepted: 14 February 2020 / Published: 20 February 2020
Na-Cu carbonates are relatively rare secondary minerals in weathering zones of ore deposits. Hereby we describe mineral composition and crystal chemistry of the most important secondary (Na)Cu minerals and their Na- and Mg-bearing associates forming rich paragenesis in Rudna IX mine. A non-bulky Ca-rich dripstone-like paragenesis from Lubin Główny mine is also characterized, using Powder X-Ray Diffraction, Rietveld, and Electron Microprobe methods. Light blue juangodoyite (3rd occurrence worldwide) and darker chalconatronite are the most important members of the Rudna IX paragenesis, being associated with malachite, aragonite (intergrown with hydromagnesite and northupite), and probably cornwallite. Most of the minerals are chemically close to their ideal composition, with minor Mg substitution in malachite. Cu chlorides are mainly represented by clinoatacamite and probably herbertsmithite. Additional, minor phases include trace Cu minerals langite, wroewolfeite, and a lavendulan-group mineral, and monohydrocalcite. Separate halite-rich encrustations are shown to be filled with eriochalcite, ktenasite, and kröhnkite. The most likely to be confirmed coexisting species include paratacamite, wooldridgeite/nesquehonite, johillerite, melanothallite, and kipushite. The Lubin paragenesis mainly comprises aragonite, gypsum, rapidcreekite, and monohydrocalcite, with trace vaterite. Blue colouration is mainly provided by a yet unspecified Ni-, Co-, Mg-, and Mn-bearing Cu-Zn-Ca arsenate mineral close to parnauite. View Full-Text
Keywords: juangodoyite; chalconatronite; secondary Cu minerals; rapidcreekite; Fore-Sudetic monocline juangodoyite; chalconatronite; secondary Cu minerals; rapidcreekite; Fore-Sudetic monocline
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MDPI and ACS Style

Kruszewski, Ł.; Świerk, M.; Siuda, R.; Szełęg, E.; Marciniak-Maliszewska, B. Third Worldwide Occurrence of Juangodoyite, Na2Cu(CO3)2, and Other Secondary Na, Cu, Mg, and Ca Minerals in the Fore-Sudetic Monocline (Lower Silesia, SW Poland). Minerals 2020, 10, 190. https://doi.org/10.3390/min10020190

AMA Style

Kruszewski Ł, Świerk M, Siuda R, Szełęg E, Marciniak-Maliszewska B. Third Worldwide Occurrence of Juangodoyite, Na2Cu(CO3)2, and Other Secondary Na, Cu, Mg, and Ca Minerals in the Fore-Sudetic Monocline (Lower Silesia, SW Poland). Minerals. 2020; 10(2):190. https://doi.org/10.3390/min10020190

Chicago/Turabian Style

Kruszewski, Łukasz; Świerk, Mateusz; Siuda, Rafał; Szełęg, Eligiusz; Marciniak-Maliszewska, Beata. 2020. "Third Worldwide Occurrence of Juangodoyite, Na2Cu(CO3)2, and Other Secondary Na, Cu, Mg, and Ca Minerals in the Fore-Sudetic Monocline (Lower Silesia, SW Poland)" Minerals 10, no. 2: 190. https://doi.org/10.3390/min10020190

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