Experimental study of titanite-fluorite equilibria in the A-type Mount Scott Granite: Implications for assessing F contents of felsic magma

Abstract

Research Article| October 01, 1999 Experimental study of titanite-fluorite equilibria in the A-type Mount Scott Granite: Implications for assessing F contents of felsic magma Jonathan D. Price; Jonathan D. Price 1School of Geology and Geophysics, University of Oklahoma, Norman, Oklahoma 73071, USA Search for other works by this author on: GSW Google Scholar John P. Hogan; John P. Hogan 1School of Geology and Geophysics, University of Oklahoma, Norman, Oklahoma 73071, USA Search for other works by this author on: GSW Google Scholar M. Charles Gilbert; M. Charles Gilbert 1School of Geology and Geophysics, University of Oklahoma, Norman, Oklahoma 73071, USA Search for other works by this author on: GSW Google Scholar David London; David London 1School of Geology and Geophysics, University of Oklahoma, Norman, Oklahoma 73071, USA Search for other works by this author on: GSW Google Scholar George B. Morgan, VI George B. Morgan, VI 1School of Geology and Geophysics, University of Oklahoma, Norman, Oklahoma 73071, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Jonathan D. Price 1School of Geology and Geophysics, University of Oklahoma, Norman, Oklahoma 73071, USA John P. Hogan 1School of Geology and Geophysics, University of Oklahoma, Norman, Oklahoma 73071, USA M. Charles Gilbert 1School of Geology and Geophysics, University of Oklahoma, Norman, Oklahoma 73071, USA David London 1School of Geology and Geophysics, University of Oklahoma, Norman, Oklahoma 73071, USA George B. Morgan, VI 1School of Geology and Geophysics, University of Oklahoma, Norman, Oklahoma 73071, USA Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1999) 27 (10): 951–954. https://doi.org/10.1130/0091-7613(1999)027<0951:ESOTFE>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Jonathan D. Price, John P. Hogan, M. Charles Gilbert, David London, George B. Morgan; Experimental study of titanite-fluorite equilibria in the A-type Mount Scott Granite: Implications for assessing F contents of felsic magma. Geology 1999;; 27 (10): 951–954. doi: https://doi.org/10.1130/0091-7613(1999)027<0951:ESOTFE>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Titanite and fluorite stability in melt were experimentally evaluated at 850 °C, 200 MPa, f(O2) ≈ NNO (nickel-nickel oxide oxygen buffer) as functions of total F and H2O content. Experiments employed the metaluminous Mount Scott Granite of the Wichita igneous province, Oklahoma. Over a large range of added H2O (∼1–7 wt%), melts containing <1 wt% F precipitated titanite without fluorite, whereas melts containing >1 wt% F precipitated fluorite without titanite. In addition, at high F (≥ 1.2 wt%) plagioclase and hornblende reacted to form biotite. Thus, an increase in F during crystallization may explain the observed higher modal abundance of plagioclase and hornblende in titanite-dominant samples vs. higher modal biotite in fluorite-dominant samples within the Mount Scott Granite pluton. Coexistence of magmatic titanite and fluorite in the Mount Scott Granite pluton implies Fm of ∼1 wt% at the point in its crystallization history where these minerals coprecipitated. We suggest that the presence of primary fluorite within high-temperature, shallowly emplaced, moderate f(O2), subaluminous felsic rocks indicates high magmatic fluorine, whereas titanite without fluorite in such rocks indicates low initial fluorine. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.