| Soddyite | |
|---|---|
 A piece of rock from Swambo in the Democratic Republic of Congo containing yellow crystals of soddyite | |
| General | |
| Category | Nesosilicates |
| Formula (repeating unit) | (UO2)2SiO4·2H2O |
| IMA symbol | Sod[1] |
| Strunz classification | 9.AK.05 |
| Dana classification | 53.03.03.01 |
| Crystal system | Orthorhombic |
| Crystal class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
| Space group | F ddd |
| Unit cell | 1,745.03 ų |
| Identification | |
| Color | Canary yellow to amber yellow |
| Cleavage | Perfect on {001}, good on {111} |
| Mohs scale hardness | 3 - 4 |
| Luster | Vitreous, greasy, dull |
| Streak | Yellow |
| Diaphaneity | Transparent, translucent, opaque |
| Density | 4.627 |
| Optical properties | Biaxial (-) |
| Refractive index | nα = 1.650 - 1.654, nβ = 1.685, nγ = 1.699 - 1.715 |
| Birefringence | 0.049 - 0.061 |
| Dispersion | Relatively weak |
| Ultraviolet fluorescence | Weak orange yellow |
| Other characteristics |  Radioactive |
Soddyite is a mineral of uranium. It has yellow crystals and usually mixed with curite in oxidized uranium ores. It is named after the British radiochemist and physicist Frederick Soddy (1877–1956). Soddyite has been a valid species since 1922, following its discovery in the locality of the Shinkolobwe uranium mine in the Haut-Katanga Province of the Democratic Republic of the Congo (DRC).[2][3][4]
YouTube Encyclopedic
-
1/1Views:455
-
The McCammon Collections Vol 9 Uraninite and Gummite, Grafton New Hampshire
Transcription
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.
- ^ Webmineral data for soddyite
- ^ Mindat information page for Soddyite
- ^ Handbook of Mineralogy
 | This article about a specific silicate mineral is a stub. You can help Wikipedia by expanding it. |
This page was last edited on 13 August 2023, at 02:29