The mineralogy and weathering of thallium-rich waste dumps of Crven Dol locality, Allchar deposit

Natalie Lammer; Eugen Libowitzky; Tamara Đorđević

The mineralogy and weathering of thallium-rich waste dumps of Crven Dol locality, Allchar deposit

Natalie Lammer
, Eugen Libowitzky
, Tamara Đorđević (Corresponding author)

Department of Mineralogy and Crystallography

Publications: Contribution to journal › Meeting abstract/Conference paper › Peer Reviewed

Abstract

The Crven Dol area of the former Sb–As–Tl–Au Allchar mine (North Macedonia) contains large quantities of abandoned mine waste that is extremely rich in thallium (Tl) and arsenic (As). According to ĐORĐEVIĆ et al. (2021), these wastes often contain up to 142 g/kg of As and up to 18 g/kg of Tl, both of which are retained in primary sulfides and in newly formed secondary minerals resulting from the oxidative weathering of Tl-bearing
metal sulfides. In addition to well-known secondary Tl minerals, many poorly- or nanocrystalline phases lack appropriate chemical and structural characterization. Therefore, we are working extensively to characterize various specimens containing these two pollutants. As part of the current study, we mineralogically characterized two weathered hand specimens (Allchar 1 and 2) using secondary electron microscopy with energy dispersive X-ray
spectrometry (SEM-EDS), powder X-ray diffraction (PXRD), and Raman spectroscopy.

Original language	English
Pages (from-to)	105
Number of pages	1
Journal	Mitteilungen der Österreichischen Mineralogischen Gesellschaft
Volume	171
Issue number	2025
Publication status	Published - 2025
Event	MinPet 2025: From Fundamental Research to Applications in Industry - Montanuniversität Leoben, Leoben, Austria Duration: 21 Sept 2025 → 23 Sept 2025 https://www.unileoben.ac.at/minpet-leoben/

Funding

Financial support of the Austrian Science Fund (FWF) [P 36828-N] to T. Đorđević is gratefully acknowledged.

Austrian Fields of Science 2012

105116 Mineralogy
105113 Crystallography

Cite this

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title = "The mineralogy and weathering of thallium-rich waste dumps of Crven Dol locality, Allchar deposit",

abstract = "The Crven Dol area of the former Sb–As–Tl–Au Allchar mine (North Macedonia) contains large quantities of abandoned mine waste that is extremely rich in thallium (Tl) and arsenic (As). According to {\D}OR{\D}EVI{\'C} et al. (2021), these wastes often contain up to 142 g/kg of As and up to 18 g/kg of Tl, both of which are retained in primary sulfides and in newly formed secondary minerals resulting from the oxidative weathering of Tl-bearing metal sulfides. In addition to well-known secondary Tl minerals, many poorly- or nanocrystalline phases lack appropriate chemical and structural characterization. Therefore, we are working extensively to characterize various specimens containing these two pollutants. As part of the current study, we mineralogically characterized two weathered hand specimens (Allchar 1 and 2) using secondary electron microscopy with energy dispersive X-ray spectrometry (SEM-EDS), powder X-ray diffraction (PXRD), and Raman spectroscopy.",

author = "Natalie Lammer and Eugen Libowitzky and Tamara {\D}or{\d}evi{\'c}",

year = "2025",

language = "English",

volume = "171",

pages = "105",

journal = "Mitteilungen der {\"O}sterreichischen Mineralogischen Gesellschaft",

issn = "1609-0144",

number = "2025",

note = "MinPet 2025 : From Fundamental Research to Applications in Industry, MinPet 2025 ; Conference date: 21-09-2025 Through 23-09-2025",

url = "https://www.unileoben.ac.at/minpet-leoben/",

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The mineralogy and weathering of thallium-rich waste dumps of Crven Dol locality, Allchar deposit. / Lammer, Natalie; Libowitzky, Eugen; Đorđević, Tamara (Corresponding author).
In: Mitteilungen der Österreichischen Mineralogischen Gesellschaft, Vol. 171, No. 2025, 2025, p. 105.

Publications: Contribution to journal › Meeting abstract/Conference paper › Peer Reviewed

TY - JOUR

T1 - The mineralogy and weathering of thallium-rich waste dumps of Crven Dol locality, Allchar deposit

AU - Lammer, Natalie

AU - Libowitzky, Eugen

AU - Đorđević, Tamara

PY - 2025

Y1 - 2025

N2 - The Crven Dol area of the former Sb–As–Tl–Au Allchar mine (North Macedonia) contains large quantities of abandoned mine waste that is extremely rich in thallium (Tl) and arsenic (As). According to ĐORĐEVIĆ et al. (2021), these wastes often contain up to 142 g/kg of As and up to 18 g/kg of Tl, both of which are retained in primary sulfides and in newly formed secondary minerals resulting from the oxidative weathering of Tl-bearing metal sulfides. In addition to well-known secondary Tl minerals, many poorly- or nanocrystalline phases lack appropriate chemical and structural characterization. Therefore, we are working extensively to characterize various specimens containing these two pollutants. As part of the current study, we mineralogically characterized two weathered hand specimens (Allchar 1 and 2) using secondary electron microscopy with energy dispersive X-ray spectrometry (SEM-EDS), powder X-ray diffraction (PXRD), and Raman spectroscopy.

AB - The Crven Dol area of the former Sb–As–Tl–Au Allchar mine (North Macedonia) contains large quantities of abandoned mine waste that is extremely rich in thallium (Tl) and arsenic (As). According to ĐORĐEVIĆ et al. (2021), these wastes often contain up to 142 g/kg of As and up to 18 g/kg of Tl, both of which are retained in primary sulfides and in newly formed secondary minerals resulting from the oxidative weathering of Tl-bearing metal sulfides. In addition to well-known secondary Tl minerals, many poorly- or nanocrystalline phases lack appropriate chemical and structural characterization. Therefore, we are working extensively to characterize various specimens containing these two pollutants. As part of the current study, we mineralogically characterized two weathered hand specimens (Allchar 1 and 2) using secondary electron microscopy with energy dispersive X-ray spectrometry (SEM-EDS), powder X-ray diffraction (PXRD), and Raman spectroscopy.

M3 - Meeting abstract/Conference paper

SN - 1609-0144

VL - 171

SP - 105

JO - Mitteilungen der Österreichischen Mineralogischen Gesellschaft

JF - Mitteilungen der Österreichischen Mineralogischen Gesellschaft

IS - 2025

T2 - MinPet 2025

Y2 - 21 September 2025 through 23 September 2025

ER -