Frankhawthorneite Cu2Te6+O4(OH)2 is a monoclinic copper tellurate mineral (space group P21/n) named after Prof. Frank Christopher Hawthorne (born 1946), University of Manitoba, Winnipeg, Canada. It was discovered at Centennial Eureka Mine, Tintic District, East Tintic Mountains, Juab County, Utah, in 1995. It has a leaf green color.[4]
| Frankhawthorneite | |
|---|---|
| General | |
| Category | Tellurate mineral |
| Formula (repeating unit) | Cu2Te6+O4(OH)2 |
| IMA symbol | Fht[1] |
| Strunz classification | 4.FD.25 |
| Dana classification | 33.1.4.1 |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) (same H-M symbol) |
| Space group | P21/n |
| Identification | |
| Color | Medium leaf-green |
| Fracture | Uneven |
| Tenacity | Brittle |
| Mohs scale hardness | 3–4 |
| Luster | Vitreous |
| Streak | Pale leaf-green |
| Diaphaneity | Transparent |
| Specific gravity | 5.43 |
| Refractive index | 2.00 |
| References | [2][3] |
See also edit
References edit
- ^ 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.
- ^ Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C. (2005). "Frankhawthorneite" (PDF). Handbook of Mineralogy. Mineral Data Publishing. Retrieved 14 March 2022.
- ^ Hawthorneite, Mindat.org
- ^ Grice, J.D.; Roberts, A.C. (1995). "Frankhawthorneite, a unique HCP framework structure of a cupric tellurate". The Canadian Mineralogist. 33: 649–653. Retrieved 30 December 2020.