lemanskiite
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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 Guanac
Wikidata facts
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- Nickel-Strunz 9th edition (updated 2009)
- 8.DG.05
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 8.DG.05
- Commons category
- Lemanskiite
- IMA Mineral Symbol
- Lmk
- chemical formula
- NaCaCu₅(AsO₄)₄Cl * 3H₂O
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Article
9 sectionsContents
- Location, occurrence, and paragenesis
- Physical properties
- Optical properties
- Chemical properties
- Crystal structure
- Chemical composition
- X-ray crystallography
- See also
- References
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.
== Location, occurrence, and paragenesis == The Abundancia gold mine, El Guanaco mining district, is located south of Cerro La Estrella. The quartz veins contain several sulfides, mostly enargite, and it is associated with coarse grains and crystals of dark green lammerite. Other associated minerals include green crystals of olivenite, gray crystals of mansfieldite, white grains of senarmontite, and with a mixture from the crandallite group. Its intergrowths indicate very acid conditions of origin, characteristics of epithermal deposits.