Letovicite
This article will address the topic of Letovicite, which has been the subject of interest and debate in various areas. Since time immemorial, Letovicite has aroused the curiosity and intrigue of humanity, generating both admiration and controversy. Throughout history, Letovicite has played a significant role in society, influencing the way people relate to and perceive their environment. In this sense, it is essential to thoroughly analyze and understand the multiple facets of Letovicite, with the aim of expanding our knowledge and vision of the world around us. In this way, we aim to shed light on the various implications and repercussions that Letovicite has had and continues to have today.
| Letovicite | |
|---|---|
 White crystals of ammonium sulfate mineral letovicite from the Anna 2 Mine, Aachen, North Rhine – Westphalia, Germany. | |
| General | |
| Category | Sulfate mineral |
| Formula | (NH4)3H(SO4)2 |
| IMA symbol | Let[1] |
| Strunz classification | 07.AD.20 |
| Dana classification | 28.1.3.1 |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) |
| Space group | C2/c (no. 15) |
| Identification | |
| Color | Colorless, white |
| Crystal habit | Tiny pseudo-hexagonal plates, granular |
| Twinning | Lamellar twinning |
| Cleavage | Distinct on {001} |
| Fracture | Uneven |
| Mohs scale hardness | 1–2 |
| Diaphaneity | Transparent |
| Specific gravity | 1.83 |
| Optical properties | Biaxial (−), colorless (transmitted light) |
| 2V angle | 75° (calc.) |
| Solubility | Soluble in water |
| References | [2] |
Letovicite (/lɛtoʊˈvɪsaɪt/) is an ammonium sulfate mineral with composition (NH4)3H(SO4)2 (IUPAC: triammonium sulfate hydrogensulfate, Nickel–Strunz classification 07.AD.20).
It is a rare colorless or white monoclinic secondary mineral formed during the burning of waste coal heaps and as a deposit in hot springs. It was first described from the Letovice region of Moravia in 1932. Geologic occurrences also include Austria, Germany, Hungary, Italy, Poland, South Africa, Tajikistan and the United States.
References
- ^ 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.
- ^ Leclaire, A.; Ledésert, M.; Monier, J. C.; Daoud, A.; Damak, M. (1 August 1985). "Structure du disulfate acide de triammonium. Une redétermination. Relations des chaînes de liaisons hydrogène avec la morphologie et la conductivité électrique". Acta Crystallographica Section B: Structural Science. 41 (4): 209–213. Bibcode:1985AcCrB..41..209L. doi:10.1107/S0108768185002002.
- Letovicite
- Letovicite Mineral Data
- Letovicite Archived 2015-09-24 at the Wayback Machine
- Letovicite
Bibliography
- Palache, P.; Berman H.; Frondel, C. (1960). "Dana's System of Mineralogy, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. (Seventh Edition)" John Wiley and Sons, Inc., New York, pp. 397.
