Global InformationLemanskiite information
| Lemanskiite | |
|---|---|
 | |
| General | |
| Category | [[]] |
| Formula (repeating unit) | NaCaCu5(AsO4)4Cl·3H2O |
| IMA symbol | Lmk[1] |
| Strunz classification | 4/K.01-10 |
| Crystal system | Monoclinic |
| Space group | P21/m |
| Unit cell | a = 9.9758 Å, b=,
c = 36.714 Å; β=; Z = 8 |
| Identification | |
| Formula mass | 1060.88 |
| Color | Dark sky blue |
| Crystal habit | Aggregates, rosette |
| Cleavage | Perfect (001) |
| Fracture | Irregular |
| Tenacity | Brittle |
| Mohs scale hardness | ~2.5 |
| Luster | Vitreous |
| Streak | light blue |
| Diaphaneity | Transparent |
| Density | 3.78 g/cm3 |
| Dispersion | v >> r strong |
| Absorption spectra | Strong 900 cm−1 |
| References | [2][3][4][5] |
Lemanskiite is a mineral that was first discovered in a mine at Abundancia mine, El Guanaco mining district, Chile, with the ideal formula of NaCaCu5(AsO4)4Cl·3H2O. Originally, this mineral was discovered as being dimorphus with lavendulan, but in 2018 it was revised to only have 3 water molecules. Lemanskiite typically occurs as rosette-shaped aggregates of thin lamellar or needle-shaped aggregates, such as lammerite. Lemanskiite is dark sky blue with a light blue streak, it is brittle with an excellent cleavage plane. It was found on a dumping site in the abandoned Abundancia mine, El Guanaco mining district, Region II, Antofagasta Province, Chile The new mineral has been named after Chester S. Lemanski, Jr. This mineral and name were then approved by the Commission on New Minerals and Mineral Names of the International Mineralogical Association.[6]
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ Paar, W.H., R.S.W. Braithwaite, T.T. Chen, and P. Keller (1984) A new mineral, scotlandite (PbSO3) from Leadhills, Scotland: the first naturally occurring sulphite. Mineral. Mag., 48, 283–288.
- ^ Hudson Institute of Mineralogy, 2017, Scotlandite: https://www.mindat.org/min-3597.html (accessed November 2019)
- ^ Borthwick, C.W., 1992, Leadhills and Wanlockhead – an excursion: http://earthwise.bgs.ac.uk/index.php/Leadhills_and_Wanlockhead_-_an_excursion (accessed November 2019)
- ^ Pertlik, F. & Zemann, J. TMPM Tschermaks Petr. Mitt. (1985) 34: 289. https://doi.org/10.1007/BF01082968 (accessed December 2019)
- ^ Ondrus, P.; Veselovsky, F.; Skala, R.; Sejkora, J.; Pazout, R.; Fryda, J.; Gabasova, A.; Vajdak, J. (2006-04-01). "LEMANSKIITE, NaCaCu5(AsO4)4Cl{middle dot}5H2O, A NEW MINERAL SPECIES FROM THE ABUNDANCIA MINE, CHILE". The Canadian Mineralogist. 44 (2): 523–531. doi:10.2113/gscanmin.44.2.523. ISSN 0008-4476.