Martín-Rabios, J. D., Rodriguez-Gallego, M. (1982) Chromian mica from Sierra Nevada, Spain. Mineralogical Magazine, 46 (339) 269-272 doi:10.1180/minmag.1982.046.339.16
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Chromian mica from Sierra Nevada, Spain | ||
| Journal | Mineralogical Magazine | ISSN | 0026-461X |
| Authors | Martín-Rabios, J. D. | Author | |
| Rodriguez-Gallego, M. | Author | ||
| Year | 1982 (June) | Volume | 46 |
| Issue | 339 | ||
| Publisher | Mineralogical Society | ||
| Download URL | https://rruff.info/doclib/MinMag/Volume_46/46-339-269.pdf+ | ||
| DOI | doi:10.1180/minmag.1982.046.339.16Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 3394 | Long-form Identifier | mindat:1:5:3394:1 |
| GUID | 0 | ||
| Full Reference | Martín-Rabios, J. D., Rodriguez-Gallego, M. (1982) Chromian mica from Sierra Nevada, Spain. Mineralogical Magazine, 46 (339) 269-272 doi:10.1180/minmag.1982.046.339.16 | ||
| Plain Text | Martín-Rabios, J. D., Rodriguez-Gallego, M. (1982) Chromian mica from Sierra Nevada, Spain. Mineralogical Magazine, 46 (339) 269-272 doi:10.1180/minmag.1982.046.339.16 | ||
| In | (1982, June) Mineralogical Magazine Vol. 46 (339) Mineralogical Society | ||
| Abstract/Notes | SynopsisEmerald green chromian 2M1 mica occurs in metamorphosed and metasomatized limestones, related to serpentinic rocks from Sierra Nevada, Spain. Chemical analysis gave: SiO2 44.51, Al2O3 27.60, TiO2 0.17, Cr2O3 3.35, Fe2O3 1.76, FeO 0.07, MnO 0.00, MgO 8.59, Li2O 0.03, Rb2O 0.01, BaO 0.01, CaO 1.71, Na2O 0.40, K2O 7.86, H2O 4.21 = 100.28. Optic properties are: pleochroism X blue, Y green, Z bluish green; refractive indices: α=1.562, β=1.611, γ=1.616 (yellow light); inclined dispersion, r > v. Orientation: second order mica. Refined parameters are a = 5.2116(6), b = 9.045(2), c = 19.97(2)Å, β = 95.7(3)°. The structure is discussed and an order in the octahedral M(1) sites is observed, but no ordering in the tetrahedral T(1) and T(2) cations is detected. The mica described is a mariposite with anoma-lously high contents of Ca and Mg. | ||
See Also
These are possibly similar items as determined by title/reference text matching only.
 | |
 | |
 | |
 | |
 | |
 | |
 | |
 | |
 | |
 | |
 |