| Jinshajiangite | |
|---|---|
 Jinshajiangite crystals. Locality: Luku Mine,
Panzhihua, Sichuan Province, China | |
| General | |
| Category | Sorosilicate |
|
Formula (repeating unit) | BaNaFe4Ti2(Si2O7)2O2(OH)2F |
| IMA symbol | Jsh [1] |
| Strunz classification | 9.BE.67 |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) (same H-M symbol) |
| Space group | C2/m |
| Unit cell | a = 10.6785, b = 13.786 c = 20.700 [Å], β = 94.937° |
| Identification | |
| References | [2] [3] |
Jinshajiangite is a rare silicate mineral named after the Jinshajiang river in China. [4] [3] Its currently accepted formula is BaNaFe4Ti2(Si2O7)2O2(OH)2F. [5] It gives a name of the jinshajiangite group. [3] 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 [5] and perraultite. [6] It is chemically related to bafertisite, cámaraite [3] and emmerichite. [7] 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. [5]
The mineral has only two known places of natural occurrences; a dyke near Jinshajiang River, Sichuan Province and the intrusion of Norra Kärr in Sweden. [8] [5]
- ^ 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.
- ^ Sokolova E, Camara F, Hawthorne FC, Abdu Y (2009). "From structure topology to chemical composition. VII. Titanium silicates: the crystal structure and crystal chemistry of jinshajiangite". European Journal of Mineralogy. 21 (4): 871–883. Bibcode: 2009EJMin..21..871S. doi: 10.1127/0935-1221/2009/0021-1945.
- ^ 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 d Rastsvetaeva, R.K.; Chukanov, N.V.; Rozenberg, K.A. (2008). "Crystal Structure of Jinshajiangite from the Norra Kärr Complex (Sweden)". Crystallography Reports. 53 (4): 553–556. Bibcode: 2008CryRp..53..553R. doi: 10.1134/s1063774508040044. S2CID 96285220.
- ^ Mindat, Perraultite
- ^ Mindat, Emmerichite
- ^ Holtstam, Dan (1998). "Jinshajiangite from the Norra Kärr alkaline intrusion, Jönköping, Sweden". GFF. 120 (4): 373–374. Bibcode: 1998GFF...120..373H. doi: 10.1080/11035899801204373.
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