| Ferri-obertiite | |
|---|---|
 A close up view of the mineral | |
| General | |
| Category | Mineral |
|
Formula (repeating unit) | Na(Na2)(Mg3Fe3+Ti)(Si8O22)O2 |
Ferri-obertiite is an amphibole group mineral that was formally approved by the International Mineralogical Association in 2015. It has the chemical formula Na(Na2)(Mg3Fe3+Ti)(Si8O22)O2. [1]
Ferri-obertiite is highly sodic and is especially characterized in the presence of oxygen instead of a hydroxy group or fluorine at the W site, which compensates for the relatively high positive charge due to the dominance of ferric iron and presence of titanium. Similar to many other amphiboles, ferri-obertiite is monoclinic with space group C2/m. [1] [2]
The name honors professor Roberta Oberti of the University of Pavia, Italy. [2]
- ^ a b "Ferri-obertiite: Ferri-obertiite mineral information and data". Mindat.org. Retrieved 2016-03-04.
- ^ a b Oberti, R., Boiocchi, M., Hawthorne, F.C., Ball, N.A., and Blass, G., 2015. Ferri-obertiite, IMA 2015-079. CNMNC Newsletter No. 28, December 2015, page ; Mineralogical Magazine 79, 1859–1864
 | This article about a specific silicate mineral is a stub. You can help Wikipedia by expanding it. |
| Ferri-obertiite | |
|---|---|
|
A close up view of the mineral | |
| General | |
| Category | Mineral |
|
Formula (repeating unit) | Na(Na2)(Mg3Fe3+Ti)(Si8O22)O2 |
Ferri-obertiite is an amphibole group mineral that was formally approved by the International Mineralogical Association in 2015. It has the chemical formula Na(Na2)(Mg3Fe3+Ti)(Si8O22)O2. [1]
Ferri-obertiite is highly sodic and is especially characterized in the presence of oxygen instead of a hydroxy group or fluorine at the W site, which compensates for the relatively high positive charge due to the dominance of ferric iron and presence of titanium. Similar to many other amphiboles, ferri-obertiite is monoclinic with space group C2/m. [1] [2]
The name honors professor Roberta Oberti of the University of Pavia, Italy. [2]
- ^ a b "Ferri-obertiite: Ferri-obertiite mineral information and data". Mindat.org. Retrieved 2016-03-04.
- ^ a b Oberti, R., Boiocchi, M., Hawthorne, F.C., Ball, N.A., and Blass, G., 2015. Ferri-obertiite, IMA 2015-079. CNMNC Newsletter No. 28, December 2015, page ; Mineralogical Magazine 79, 1859–1864
|
| This article about a specific silicate mineral is a stub. You can help Wikipedia by expanding it. |