Where it forms, where it's found
- Type locality
- Geister vein
- Rovnost Mine
- Jáchymov
- Karlovy Vary District
- Karlovy Vary Region
- Czech Republic
50.3690°, 12.8971°
1recorded occurrences
Safety & handling
Physical
Optical
- UV response
- Not fluorescent under long- or short-wave UV
Crystallography
- Space group
- #14
- Cell parameters
- a = 15.504(7) Å · b = 18.144(7) Å · c = 10.563(5) Å
- Cell angles
- β = 103.30(4) °
- Ratio a:b:c
- 1 : 1.170 : 0.681
- Unit cell volume
- 2891.5 ų
- Z
- 4
- Type-locality form
Rounded or grape-like aggregates, greenish-blue color, to 4 mm in size, sitting at the surface of the supergene crusts. The aggregates are composed of hundreds of microcrystals that are not larger than a few microns. Inconspicuous in appearance; it can be mistakenly referred to as geminite.
- Comment
Space-group setting P21/n. (Note: The abstract of the original description incorrectly states “P21/m”.)
Crystal structure
Chemical composition
Synonyms
- Krupičkaiet
In other languages
- German
- IMA 2020-032 · Krupičkait
Classification
Strunz
10th ed.8.CB
- 8Phosphates, Arsenates, VanadatesClass
- 8.CPhosphates without additional anions, with H2ODivision
- 8.CBWith only medium-sized cations, RO4:H2O = 1:1Group
- 8.CBKrupičkaiteSpecies
Literature, links & citation
Citations
- 2020Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2020) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 56. European Journal of Mineralogy, 32 (4) 443-448 doi:10.5194/ejm-32-443-2020 DOI: 10.5194/ejm-32-443-2020
- 2021Steciuk, G.; Sejkora, J.; Čejka, J.; Plášil, J.; Hloušek, J. (2021) Krupičkaite, Cu6[AsO3(OH)]6·8H2O, a new copper arsenate mineral from Jáchymov (Czech Republic). Journal of GEOsciences, 66 (1). 37-50
- 2022(2022) Krupičkaite. Handbook of Mineralogy. Mineralogical Society of America
Cite this entry
@misc{mineral2026,
author = {Mineral Index editorial board},
title = {Krupičkaite — Mineral Index},
year = {2026},
url = {https://mineralindex.org/minerals/krupickaite-55044},
note = {Accessed 2026-05-11}
}