| Reference Type | Journal (article/letter/editorial) |
|---|
| Title | Subsolidus rubidium-dominant feldspar from the Morrua pegmatite, Mozambique: paragenesis and composition |
|---|
| Journal | Mineralogical Magazine | ISSN | 0026-461X |
|---|
| Authors | Teertstra, D. K. | Author |
|---|
| Černý, P. | Author |
| Hawthorne, F. C. | Author |
| Year | 1999 (June) | Volume | 63 |
|---|
| Page(s) | 313-320 | Issue | 3 |
|---|
| Publisher | Mineralogical Society |
|---|
| URL | |
|---|
| Download URL | https://rruff.info/doclib/MinMag/Volume_63/63-3-313.pdf+ |
|---|
| DOI | doi:10.1180/002646199548538Search in ResearchGate |
|---|
| Original Entry | Teertstra, D. K., Černý, P., & Hawthorne, F. C. (1999). Subsolidus rubidium-dominant feldspar from the Morrua pegmatite, Mozambique: paragenesis and composition. Mineralogical Magazine, 63(3), 313-320. |
|---|
| Classification | Not set | LoC | Not set |
|---|
| Mindat Ref. ID | 15965882 | Long-form Identifier | mindat:1:5:15965882:8 |
|---|
|
| GUID | cac0dd0c-1b24-41c3-8a3f-badb2442da17 |
|---|
| Full Reference | Teertstra, D. K., Černý, P., Hawthorne, F. C. (1999) Subsolidus rubidium-dominant feldspar from the Morrua pegmatite, Mozambique: paragenesis and composition. Mineralogical Magazine, 63 (3) 313-320 doi:10.1180/002646199548538 |
|---|
| Plain Text | Teertstra, D. K., Černý, P., Hawthorne, F. C. (1999) Subsolidus rubidium-dominant feldspar from the Morrua pegmatite, Mozambique: paragenesis and composition. Mineralogical Magazine, 63 (3) 313-320 doi:10.1180/002646199548538 |
|---|
| In | (1999) Mineralogical Magazine Vol. 63 (3) Mineralogical Society |
|---|
| Abstract/Notes | At the Morrua pegmatite, Mozambique, alkali feldspar has replaced pollucite under low-temperature (250–150°C) hydrothermal conditions. Fluids invading a fracture system in pollucite formed round granular aggregates of (K-Rb)-feldspar in three stages: (1) a compositionally heterogeneous core of the feldspar cluster (+cookeite ± apatite) with 7–20 mol.% RbAlSi3O8, grading outward into a Rb-dominant feldspar with 66 mol.% RbAlSi3O8 (20 wt.% Rb2O); (2) an intermediate layer of non-porous, inclusion-free, end-member K-feldspar; (3) an outer layer of porous end-member K-feldspar. Feldspars of all three stages seem to be monoclinic and disordered, with metastable sanidine structure. Zoning in K/Rb, preserved on a fine scale, was formed during growth at a temperature too low for subsequent alkali-cation diffusion or (Al,Si)-ordering. |
|---|
These are possibly similar items as determined by title/reference text matching only.
