Jinshajiangite
| Jinshajiangite | |
|---|---|
| General | |
| Category | Sorosilicate |
| Formula (repeating unit) | BaNaFe4Ti2(Si2O7)2O2(OH)2F |
| Strunz classification | 9.BE.67 |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) H-M symbol: (2/m) |
| Space group | C2/m |
| Unit cell | a = 10.6785, b = 13.786 c = 20.700 [Å], β = 94.937° |
| Identification | |
| References | [1][2] |
Jinshajiangite is a rare silicate mineral named after the Jinshajiang river in China.[3][2] Its currently accepted formula is BaNaFe4Ti2(Si2O7)2O2(OH)2F.[4] It gives a name of the jinshajiangite group.[2] The mineral is associated with alkaline rocks. In jinshajiangite, there is a potassium-to-barium, calcium-to-sodium, manganese-to-iron and iron-to-titanium diadochy substitution. Jinshajiangite is the iron-analogue of surkhobite[4] and perraultite.[5] It is chemically related to bafertisite, cámaraite[2] and emmerichite.[6] Its structure is related to that of bafertisite. Jinshajiangite is a titanosilicate with heteropolyhedral HOH layers, where the H-layer is a mixed tetrahedral-octahedral layer, and the O-layer is simply octahedral.[4]
References
- ^ "From structure topology to chemical composition. VII. Titanium silicates: the crystal structure and crystal chemistry of jinshajiangite". European Journal of Mineralogy. 21: 871–883. 2009.
{{cite journal}}: Cite uses deprecated parameter|authors=(help) - ^ a b c d Mindat
- ^ Hong, W., and Fu, P., 1982. Jinshajiangite - a new Ba-Mn-Fe-Ti-bearing silicate mineral. Geochemistry 1, 458-464
- ^ a b c Rastsvetaeva, R.K., Chukanov, N.V., and Rozenberg K.A., 2008. Crystal structure of jinshajiangite from the Norra Kärr Complex (Sweden), Crystallography Reports, 53, 553-556
- ^ Mindat, Perraultite [1]
- ^ Mindat, Emmerichite [2]
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