| Reference Type | Journal (article/letter/editorial) |
|---|
| Title | Hydroniumpharmacosiderite, a new member of the pharmacosiderite supergroup from Cornwall, UK: structure and description |
|---|
| Journal | Mineralogical Magazine |
|---|
| Authors | Mills, S. J. | Author |
|---|
| Kampf, A. R. | Author |
| Williams, P. A. | Author |
| Leverett, P. | Author |
| Poirier, G. | Author |
| Raudsepp, M. | Author |
| Francis, C. A. | Author |
| Year | 2010 (October) | Volume | 74 |
|---|
| Issue | 5 |
|---|
| Publisher | Mineralogical Society |
|---|
| Download URL | https://rruff.info/rruff_1.0/uploads/MM74_863.pdf+ |
|---|
| DOI | doi:10.1180/minmag.2010.074.5.863Search in ResearchGate |
|---|
| Generate Citation Formats |
|---|
| Classification | Not set | LoC | Not set |
|---|
| Mindat Ref. ID | 244108 | Long-form Identifier | mindat:1:5:244108:9 |
|---|
|
| GUID | 0 |
|---|
| Full Reference | Mills, S. J., Kampf, A. R., Williams, P. A., Leverett, P., Poirier, G., Raudsepp, M., Francis, C. A. (2010) Hydroniumpharmacosiderite, a new member of the pharmacosiderite supergroup from Cornwall, UK: structure and description. Mineralogical Magazine, 74 (5) 863-869 doi:10.1180/minmag.2010.074.5.863 |
|---|
| Plain Text | Mills, S. J., Kampf, A. R., Williams, P. A., Leverett, P., Poirier, G., Raudsepp, M., Francis, C. A. (2010) Hydroniumpharmacosiderite, a new member of the pharmacosiderite supergroup from Cornwall, UK: structure and description. Mineralogical Magazine, 74 (5) 863-869 doi:10.1180/minmag.2010.074.5.863 |
|---|
| Abstract/Notes | Hydroniumpharmacosiderite, ideally (H3O)Fe4(AsO4)3(OH)4·4H2O, is a new mineral from Cornwall, UK, probably from the St. Day group of mines. It occurs as a single yellowish green, slightly elongated cube, measuring 0.17 mm ×0.14 mm ×0.14 mm. The mineral is transparent with a vitreous lustre. It is brittle with a cleavage on {001}, has an irregular fracture, a white streak and a Mohs hardness of 2–3 (determined on H3O-exchanged pharmacosiderite). Hydroniumpharmacosiderite has a calculated density of 2.559 g cm–3 for the empirical formula. The empirical formula, based upon 20.5 oxygen atoms, is: [(H3O)0.50K0.48Na0.06]1.04(Fe3.79Al0.22)4.01[(As2.73P0.15)2.88O12](OH)4·4H2.14O. The five strongest lines in the X-ray powder diffraction pattern are [dobs(Å),Iobs,(hkl)]: 8.050,100,(001); 3.265,35,(112); 2.412,30,(113); 2.830,23,(202); 4.628,22,(111). Hydroniumpharmacosiderite is cubic, space group with a = 7.9587(2) Å, V = 504.11(2) Å3 and Z = 1. The crystal structure was solved by direct methods and refined to R1 = 0.0481 for 520 reflections with I > 2σ(I). The structure is consistent with determinations for H3O-exhchanged pharmacosiderite and the general pharmacosiderite structure type. |
|---|
These are possibly similar items as determined by title/reference text matching only.
