“Hungarian Mine Green”, a Semi-Natural Copper Pigment from Banská Bystrica Region (Slovakia) Analytical Evidence and Laboratory Replication
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F25%3A00635708" target="_blank" >RIV/61388980:_____/25:00635708 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0368458" target="_blank" >https://hdl.handle.net/11104/0368458</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/cplu.202500053" target="_blank" >10.1002/cplu.202500053</a>
Alternative languages
Result language
angličtina
Original language name
“Hungarian Mine Green”, a Semi-Natural Copper Pigment from Banská Bystrica Region (Slovakia) Analytical Evidence and Laboratory Replication
Original language description
A comprehensive approach is taken to investigate the “Hungarian mine green” pigment, including a historical overview, analysis of the pigment on artworks, and its laboratory replication. It is known that in the past, the pigment is collected in wooden reservoirs in which copper (Cu) compounds precipitated from drainage water during copper mining at Špania Dolina–Piesky and Ľubietová deposits, Slovakia. Microsamples of four polychrome wooden sculptures from the 16th-17th centuries are examined. Posnjakite (Cu4SO4(OH)6·H2O) and malachite (Cu2(CO3)(OH)2) are most frequently detected by X-ray powder microdiffraction. In rock samples from the mine site, brochantite (Cu4SO4(OH)6) and malachite are dominant, and in recent precipitates, only langite (Cu4SO4(OH)6·2H2O) is detected, remained in contact with leaking water. In the laboratory, the pigment is prepared by gradually enriching the starting CuSO4·5H2O solution with NaHCO3 in two series of experiments. The initial concentration of the reactants reflected the ratio of Cu2+: HCO3− = 1:1 found in the mine waters at the site, from which langite crystallizes. However, langite does not formed, while brochantite gradually transformed into posnjakite and subsequently malachite. The co-occurrence of basic copper sulfates and carbonates and the characteristic grain morphology proved to be the main indicators of the pigment in artworks.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10406 - Analytical chemistry
Result continuities
Project
<a href="/en/project/GA22-17966S" target="_blank" >GA22-17966S: Impact of Thriving Mid-European Mining Regions on Painting Pigments and Technologies at the Outset of Modern Age</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ChemPlusChem
ISSN
2192-6506
e-ISSN
2192-6506
Volume of the periodical
90
Issue of the periodical within the volume
7
Country of publishing house
DE - GERMANY
Number of pages
12
Pages from-to
e202500053
UT code for WoS article
001491867500001
EID of the result in the Scopus database
2-s2.0-105005571866