Where it forms, where it's found
- Geological setting
occurs as a secondary mineral on a remobilized sandstone uranium deposit.
- Type locality
- Grosses Chalttal
- Chalttal area
- Mürtschenalp
- Glarus Nord
- Glarus
- Switzerland
47.0645°, 9.1834°
8recorded occurrences
Safety & handling
Physical
- Colour
- light-pistachio-green · blue
Some, but not all, crystals turn blue under the electron beam of the SEM. On certain specimens, crystals showing both changed and unchanged colours occur closely together. A few specimens were found on the mine dump showing blue-coloured crystals when unearthed.
- Streak
- pale-green streak
- Cleavage
- Perfect
(001)
- Density
- 4.769 g/cm³
Optical
- Optical type
- Biaxial · 2V measured = 87°
- Pleochroism
- Weak
faint green parallel to [100] to bright green parallel to [010].
- UV response
- none
- Notes
calculated nav=1.816.
Crystallography
- Cell parameters
- a = 5.9132(5) Å · b = 7.8478(6) Å · c = 16.816(1) Å
- Cell angles
- β = 90.007(6) °
- Ratio a:b:c
- 1 : 1.327 : 2.844
- Z
- 4
- Type-locality form
sprays of lath-like, prismatic crystals that reach up to 450 µm in length and 40 µm in width
- Comment
space group is P21/n
Crystal structure
Chemical composition
Synonyms
- Heimiet
In other languages
- French
- heimite
- German
- Heimit · IMA 2022-019
Classification
Strunz
10th ed.8.DC.75
- 8Phosphates, Arsenates, VanadatesClass
- 8.DPhosphates, etc. with additional anions, with H2ODivision
- 8.DCWith only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1Group
- 8.DC.75HeimiteSpecies
Literature, links & citation
Citations
- 2022Roth P. (2022): Heimite, une nouvelle espèce minérale en provenance d’un gisement jusque-là sous-estimé. Le Cristallier Suisse, 56(4), 2–9. (in French & German)
- 2022Roth P. (2022): Heimite, un addendum. Le Cristallier Suisse, 56(4), 10.
- 2022Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2022) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 68. European Journal of Mineralogy, 34 (5) 385-391 doi:10.5194/ejm-34-385-2022 DOI: 10.5194/ejm-34-385-2022
- 2024Malcherek, Thomas, Mihailova, Boriana, Schlüter, Jochen, Roth, Philippe, Meisser, Nicolas (2024) Heimite, PbCu2(AsO4)(OH)3 ⋅ 2H2O, a new mineral from the Grosses Chalttal deposit, Switzerland. European Journal of Mineralogy, 36 (1) 153-164 doi:10.5194/ejm-36-153-2024DOI: 10.5194/ejm-36-153-2024
Cite this entry
@misc{mineral2026,
author = {Mineral Index editorial board},
title = {Heimite — Mineral Index},
year = {2026},
url = {https://mineralindex.org/minerals/heimite-56161},
note = {Accessed 2026-05-11}
}