| Reference Type | Journal (article/letter/editorial) |
|---|
| Title | Formation of chlor- and fluor-apatite in layered intrusions |
|---|
| Journal | Mineralogical Magazine | ISSN | 0026-461X |
|---|
| Authors | Grant Cawthorn, R. | Author |
|---|
| Year | 1994 (June) | Volume | 58 |
|---|
| Page(s) | 299-306 | Issue | 391 |
|---|
| Publisher | Mineralogical Society |
|---|
| Download URL | https://rruff.info/doclib/MinMag/Volume_58/58-391-299.pdf+ |
|---|
| DOI | doi:10.1180/minmag.1994.058.391.12Search in ResearchGate |
|---|
| Mindat Ref. ID | 2033 | Long-form Identifier | mindat:1:5:2033:0 |
|---|
|
| GUID | 6eb2fce3-0c79-44fb-89b8-82b792fad05f |
|---|
| Full Reference | Grant Cawthorn, R. (1994) Formation of chlor- and fluor-apatite in layered intrusions. Mineralogical Magazine, 58 (391) 299-306 doi:10.1180/minmag.1994.058.391.12 |
|---|
| Plain Text | Grant Cawthorn, R. (1994) Formation of chlor- and fluor-apatite in layered intrusions. Mineralogical Magazine, 58 (391) 299-306 doi:10.1180/minmag.1994.058.391.12 |
|---|
| In | (1994, June) Mineralogical Magazine Vol. 58 (391) Mineralogical Society |
|---|
| Abstract/Notes | AbstractApatite in most igneous intrusions has a high Cl/F ratio. However, chlor-apatite has been reported in the lower portions of the Bushveld and Stillwater Complexes. This has been used as evidence supporting the early separation of a Cl-rich discrete hydrous fluid in these intrusions. Mineralogical evidence is presented here to demonstrate that the Bushveld Complex, at least, formed from a nearly anhydrous magma, and did not release a hydrous fluid before apatite began to crystallize. It is suggested that apatite in the earliest cumulates equilibrated with trapped interstitial liquid, which converted it from the typical F-rich composition of cumulus apatite to a Cl-rich composition. This is an analogous process to that in which cumulus mafic minerals may become more Fe-rich on cooling and reaction with interstitial liquid. |
|---|
These are possibly similar items as determined by title/reference text matching only.
