Dehydrogenation of kaersutitic amphibole under electron beam excitation recorded by changes in Fe3+/∑Fe: An EMP and SIMS study

American Mineralogist

Volumn 93, Issue 8-9, 2008, Pages 1273-1281

  Wagner, C ^a   Deloule, E ^b   Fialin, M ^a   King, P L ^c,d  

^a CNRS   (France)

^b CRPG CNRS   (France)

^c UNIVERSITY OF WESTERN ONTARIO   (Canada)

^d UNIVERSITY OF NEW MEXICO   (United States)

Author keywords

Amphibole; EMP and SIMS measurements; Fe3+ Fe; H loss

Indexed keywords

ELECTRON BEAMS; ELECTRON PROBE MICROANALYSIS; SECONDARY ION MASS SPECTROMETRY; SILICATE MINERALS;

AMPHIBOLE; BEAM CURRENTS; ELECTRON BEAM EXCITATION; ELECTRON-BEAM CURRENT; OXIDATION OF FE; SELF ABSORPTION; STATISTICAL ERRORS; WET CHEMISTRY;

DEHYDROGENATION;

ABSORPTION; AMPHIBOLE; CURRENT VELOCITY; ELECTRON; ELECTRON PROBE ANALYSIS; HYDROGEN; IRRADIATION; MASS SPECTROMETRY; MEGACRYST;

EID: 50849108872     PISSN: 0003004X     EISSN: None     Source Type: Journal    
DOI: 10.2138/am.2008.2777     Document Type: Article

References (47)

1. André, J.M., Benbalagh, R., Barchewitz, R., Ravet, M.F., Raynal, A., Delmotte, F., Bridou, F., Julie, G., Bosseboeuf, A., Laval, R., Soullié, G., Rémond, C., and Fialin, M, (2001) Soft-X-ray multilayer monochromator with improved resolution and low specular background. X-ray Spectrometry, 30, 212-215.
2. Barnes, V.E. (1930) Changes in hornblende at about 800 °C. American Mineralogist, 15, 393-417.
3. Canil, D., Virgo, D., and Searle, C.M. (1990) Oxidation state of mantle xenoliths from British Columbia, Canada. Contributions to Mineralogy and Petrology, 104,453-462.
4. Clocchiatti, R., Condomines, M., Guénot, N,, and Tanguy, J.-C. (2004) Magma changes at Mount Etna: the 2001 and 2002-2003 eruptions. Earth and Planetary Science Letters, 226, 397-414.
5. Clowe, C.A., Popp, R.K., and Fritz, S.J. (1988) Experimental investigation of the effect of oxygen fugacity on the ferric-ferrous ratios and unit-cell parameters of four natural clinoamphiboles. American Mineralogist, 73, 487-499.
6. 3+/∑Fe in amphibole by X-ray absorption near edge structure (XANES) spectroscopy. In M.D. Dyar, C. McCammon, and M.W. Schaefer, Eds., Mineral Spectroscopy: A Tribute to Roger G. Burns, 5, p. 165-171. Geochemical Society Special Publication, St. Louis.
7. Delaney, J.S., Dyar, M.D., Sutton, S.R., and Batj, S. (1998) Redox ratios with relevant resolution: Solving an old problem by using synchrotron microXANES probe. Geology, 26, 139-142.
8. Deloule, E., Paillat, O., Pichavant, M., and Scaillet, B. (1995) Ion microprobe determination of water in silicate glasses: Methods and applications. Chemical Geology, 125, 19-28.
9. Dyar, M.D., McGuire,A.V., and Harrell, M.D. (1992) Redox behavior in contrasting styles of metasomatism in the upper mantle. Geochimica et Cosmochimica Acta, 56, 2579-2586.
10. + in mantle kaersmite: Implications for mantle metasomatism. American Mineralogist, 78, 968-979.
11. Dyar, M.D., Guidotti, C.V., Holdaway, M.G., and Colucci, M. (1993b) Nonstoichiometric hydrogen contents in common rock-forming hydroxyl silicates. Geochimica et Cosmochimica Acta, 57, 2913-2918.
12. Dyar, M.D., Gunter, M.E., Delaney, J.S., Lanzarotti, A., and Sutton, S.R. (2002) Systematics in the structure, optical properties, and XANES spectra of pyroxenes, amphiboles, and micas. Canadian Mineralogist, 40, 1375-1393.
13. 3+/∑Fe vs. FeLα peak energy for minerals and glasses: Recent advances with the electron microprobe. American Mineralogist, 86, 456-465.
14. 3+ /∑Fe: Basic concepts and experimental protocol for glasses. American Mineralogist, 89, 654-662.
15. Garvie, L.A.J., and Buseck, P.R. (1998) Ratios of ferrous to ferric iron from nanometre-sized areas in minerals. Nature, 396, 667-670.
16. Hawthorne, F.C. (1995) Crystal chemistry of the amphiboles. In D.R. Veblen, Ed., Amphiboles and Other Hydrous Pyriboles, 9A, p. 42-50. Reviews in Mineralogy, Mineralogical Society of America, Chantilly, Virginia.
17. Hawthorne, F.C. and Grundy, H.D. (1973) The crystal chemistry of the amphiboles. II. Refinement of the crystal structure of oxy-kaersutite. Mineralogical Magazine, 39, 390-400.
18. Höfer, H.E. and Brey, G.P. (2007) The iron state of garnet by electron microprobe: Its determination with the flank method combined with major element analysis. American Mineralogist, 92, 873-885.
19. Höfer, H.E., Brey, G.P., Schulz-Dobrick, B., and Oberhänsli, R. (1994) The determination of the oxidation state of iron by the electron microprobe. European Journal of Mineralogy, 6, 407-418.
20. Höfer, H.E., Weinbruch, S., McCammon, C.A., and Brey, G.P. (2000) Comparison of two electron probe microanalysis techniques to determine ferric iron in synthetic wüstite samples. European Journal of Mineralogy, 12, 63-71.
21. Johnson, M.C., Rutherford, M.J., and Hess, P.C. (1991) Cbassigny petrogenesis: Melt compositions, intensive parameters, and water contents of Martian (?) magmas. Geochimica et Cosmochimica Acta, 55, 349-366.
22. King, P., Hervig, R., Holloway, J., Vennemann, T., and Righter, K. (1999) Oxysubstitution and dehydrogenation in mantle-derived amphibole megacrysts. Geochimica et Cosmochimica Acta, 63, 3635-3651.
23. total and H partitioning between amphiboles and basanitic melts as a function of oxygen fugacity. Earth and Planetary Science Letters, 178, 97-112.
24. Leake, B.E. (1968) A catalog of analyzed calciferous and subcalciferous amphiboles together with their nomenclature and associated minerals. Geological Society America Special Paper, 98, 210.
25. McGuire, A.V., Dyar, M.D., and Nielson, J.E. (1991) Metasomatic oxidation of upper mantle peridotite. Contributions to Mineralogy and Petrology, 107, 252-264.
26. Miyagi, L., Mattsubaya, O., and Nakashima, S. (1998) Change in D/H ratio, water content and color during dehydration of hornblende. Geochemical Journal, 32, 33-48.
27. Morgan, G.B. and London, D. (1996) Optimizing the electron microprobe analysis of hydrous alkali aluminosilicate glasses. American Mineralogist, 81, 1176-1185.
28. Morgan, G.B. and London, D. (2005) Effect of current density on the electron microprobe analysis of alkali aluminosilicate glasses. American Mineralogist, 90, 1131-1138.
29. Oberti, R., Hawthorne, F.C., Cannillo, E., and Camara, F. (2007) Long-range order in Amphiboles. In F.C. Hawthorne, R. Oberti, G.C. Della Ventura, and A. Mottana, Eds., Amphibole: Crystal Chemistry, Occurrence, and Health Issues, 67, p. 125-171. Reviews in Mineralogy and Geochemistry, Mineralogical Society of America, Chantilly, Virginia.
30. Oxburgh, E.R. (1964) Petrological evidence for the presence of amphibole in the upper mantle and its petrogenetic and geophysical implications. Geological Magazine, 101, 1-19.
31. Phillips, M.W., Popp, R.K., and Clowe, C.A. (1988) Structural adjustments accompanying oxidation-dehydrogenation in amphiboles. American Mineralogist, 73, 500-506.
32. 3+, Ti, and OH in kaersutite from alkalic igneous rocks and mafic xenoliths. American Mineralogist, 77, 1250-1257.
33. 3+-rich, calcic and subcalcic amphiboles: Evidence from published chemical analyses. American Mineralogist, 75, 163-169.
34. H20 in the upper mantle. American Mineralogist, 80, 534-548.
35. Popp, R.K., Virgo, D., and Phillips, M.W. (1995b) H deficiency in kaersutitic amphiboles: Experimental verification. American Mineralogist, 80, 1347-1350.
36. Popp, R.K., Hibbert, H.A., and Lamb, W.M. (2006) Oxy-amphibole equilibria in Ti-bearing calcic amphiboles: Experimental investigation and petrologic implications for mantle-derived amphiboles. American Mineralogist, 91, 54-66.
37. Raeburn, S.P., Ilton, E.S., and Veblen, D.R. (1997) Quantitative determination of the oxidation state of iron in biotite using X-ray photoelectron spectroscopy: II. In situ analyses. Geochimica et Cosmochimica Acta, 61, 4531-4537.
38. 6 solid-solution series. European Journal of Mineralogy, 12, 105-120.
39. Righter, K. and Carmichael, I.S.E. (1993) Mega-xenocrysts in alkali olivine basalts: Fragments of disrupted mantle assemblages. American Mineralogist, 78, 1230-1245.
40. Schumacher, J.C. (1997) Appendix 2: The estimation of the proportion of ferric iron in the electron-microprobe analysis of amphiboles. Canadian Mineralogist, 35, 238-246.
41. Treiman, A.H. (1985) Amphibole and hercynite spinel in Shergotty and Zagami: Magmatic water, depth of crystallization, and metasomatism. Meteoritics, 20, 229-243.
42. Turner, N.H. and Schreifels, J.A. (2000) X-ray photoelectron spectroscopy and Auger electron spectroscopy. Analytical Chemistry, 72, 99R-110R.
43. 2.3 electron energy-loss spectra. Physics and Chemistry of Minerals, 29, 188-200.
44. 2.3 edge. Physics and Chemistry of Minerals, 26, 584-590.
45. Wilshire, H.G., Meyer, C.E., Nakata, J.K., Calk, L.C., Shervais, L.W., Nielson, J.E., and Schwarzman, E.C. (1988) Mafic and ultramafic xenoliths from volcanic rocks of the western United States. U.S. Geological Survey Professional Paper, 1443, 179 p.
46. 57Fe Mössbauer spectroscopy and resultant oxygen fugacities. Geochimica et Cosmochimica Acta, 53, 1277-1291.
47. Young, E.D., Virgo, D., and Popp, R.K. (1997) Eliminating closure in mineral formulae with specific application to amphiboles. American Mineralogist, 82, 790-806.