Skip to main content Accessibility help
×
Home

Zr- and LREE-rich titanite from Tre Croci, Vico Volcanic complex (Latium, Italy)

  • G. Della Ventura (a1), F. Bellatreccia (a1) and C. T. Williams (a2)

Abstract

Titanite occurs in the groundmass of a holocrystalline volcanic ejectum collected in the pyroclastic rocks of the Vico Volcanic complex at Tre Croci, near Viterbo, Italy. The host rock is composed of abundant K-feldspar and minor plagioclase, biotite, clinopyroxene and a feldspathoid (sodalite). Titanite is typically associated with zirconolite, biotite and Fe-oxides. It has a medium Al content (Al2O3 + Fe2O3 = 4–6 wt.%) and contains significant amounts of Zr and LREE, with a chondrite- normalised REE pattern similar to those of titanites from other alkaline rocks. Titanite has been corroded by fluids probably rich in dissolved F and P during a late alteration stage, with evidence for some remobilization and redistribution of the REE and actinide elements.

Copyright

References

Hide All
Allen, P., Condie, K.C. and Bowling, G.P. (1986) Geochemical characteristics and possible origins of the Closepet Batholith, south India. J. Geol., 94, 283–99.
Belkin, H.E., De Vivo, B., Lima, A. and Török, K. (1996) Magmatic (silicates/saline/sulfur-rich/CO2) immiscibility and zirconium and rare-earth element enrichment from alkaline magma chamber margins: evidence from Ponza Island, Pontine Archipelago, Italy. Eur. J. Mineral., 8, 1401–20.
Černý, P. and Riva di Sanseverino, L. (1972) Comments on crystal chemistry of titanite. N. Jahrb. Mineral., Monatsh., 97103.
Clark, A.M. (1974). A tantalum-rich variety of sphene. Mineral Mag., 39, 605–7.
Cullers, R.L. and Medaris, G. Jr., (1977) Rare earth elements in carbonatite and cogenetic alkaline rocks: Examples from Seabrook Lake and Callander Bay, Ontario. Contrib. Mineral. Petrol., 65, 143–53.
Della Ventura, G., Di Lisa, G.A., Marcelli, M., Mottana, A. and Paris, E. (1992) Composition and structural state of alkali feldspars from ejecta in the Roman potassic province, Italy; petrological implication. Eur. J. Mineral., 4, 411–24.
Enami, M., Suzuki, K., Liou, J.G. and Bird, D.K. (1993) Al-Fe3+ and F-OH constraints on their P-T dependence. Eur. J. Mineral., 5, 219–31.
Flohr, M.J.K. and Ross, M. (1990) Alkaline igneous rocks of Magnet Cove, Arkansas: mineralogy and geochemistry of syenites. Lithos, 26, 67–98.
Fleischer, M. (1978) Relation of the relative concentra-tions of lanthanides in titanite to type of host rocks. Amer. Mineral., 63, 869–73.
Fleischer, M. and Altschuler, Z.S. (1969) The relation-ship of the rare-earth composition of minerals to geological environment. Geochim. Cosmochim. Acta, 33, 725–32.
Giannetti, B. and Luhr, F. (1983) The white trachytic tuff of Roccamonfina Volcano (Rome Region, Italy). Contrib. Mineral. Petrol., 84, 235–52.
Gieré, R (1986) Zirconolite, allanite and hoegbomite in a marble skarn from the Bergell contact aureole: implications for mobility of Ti, Zr and REE. Contrib. Mineral. Petrol., 93, 459–70.
Gieré, R (1996) Formation of rare earth minerals in hydrothermal systems. In Rare Earth Minerals: Chemistry, Origin and Ore Deposits (Jones, A.P. Wall, F. and Williams, C.T., eds.). Mineralogical Society Series 7, Chapman and Hall, London, 105–50.
Green, T.H. and Pearson, N.J. (1986) Rare-earth element partitioning between sphene and coexisting silicate liquid at high pressure and temperature. Chem. Geol., 55, 105–19.
Groat, L.A., Carter, R.T., Hawthorne, F.C. and Ercit, T.S. (1985) Tantalian niobian titanite from the Irgon Claim, southeastern Manitoba. Can. Mineral., 23, 569–71.
Henderson, P. (1980) Rare earth element partition between sphene, apatite and other coexisting minerals of the Kangerdlugssuaq intrusion, E. Greenland. Contrib. Mineral. Petrol., 72, 81–5.
Higgins, J.B. and Ribbe, P.H. (1976) The crystal chemistry and space groups of natural and synthetic titanites. Amer. Mineral., 61, 878–88.
Isetti, G. and Penco, A.M. (1968) La posizione dell'idrogeno ossidrilico nella titanite. Mineral. Petrogr. Acta, 14, 115–22.
Jones, A.P. and Larsen, L.M. (1985) Geochemistry and REE minerals of nepheline syenites from Motzfeldt Centre, South Greenland. Amer. Mineral., 70, 1087–100.
Lloyd, F.E., Edgar, A.D. and Ragnarsdottir, K.V. (1996) LREE distribution in perovskite, apatite and titanite from South West Ugandan xenoliths and kamafugite lavas. Mineral. Petrol., 57, 205–28.
Locardi, E. (1965) Tipi di ignimbriti di magmi mediterranei: il vulcano di Vico. Atti Soc. Tosc. Sc. Nat., 45, 55–173.
Mongiorgi, R. and Riva di Sanseverino, L. (1968) A reconsideration of the structure of titanite, CaTiOSiO4 . Mineral. Petrogr. Acta, 14, 123–41.
Oberti, R., Smith, D.C., Rossi, G. and Caucia, F. (1991) The crystal-chemistry of high-aluminium titanites. Eur. J. Mineral., 3, 777–92.
Pan, Y., Fleet, M.E. and MacRae, N. (1993) Late alteration in titanite (CaTiSiO5): redistribution and remobilization of rare earth elements and implications for U/Pb and Th/Pb geochronology and nuclear waste disposal. Geochim. Cosmochim. Acta, 57, 355–67.
Paterson, B.A., Stephens, W.E. and Herd, D.A. (1989). Zoning in granitoid accessory minerals as revealed by backscattered electron imagery. Mineral. Mag., 53, 5561.
Paul, B.J., Černý, P., Chapman, R. and Hinthorne, J.R. (1981) Niobian titanite from the Huron Claim pegmatite, southeastern Manitoba. Can. Mineral., 19, 549–52.
Perseil, E. and Smith, D.C. (1995) Sb-rich titanite in the manganese concentrations at St. Marcel-Praborna, Aosta Valley, Italy: petrography and crystal-chemistry. Mineral. Mag., 59, 717–34.
Rubin, J.N., Henry, C.D. and Price, J.G. (1993) The mobility of zirconium and other ‘immobile’ elements during hydrothermal alteration. Chem. Geol., 110, 29–47.
Russell, J.K., Groat, L.A. and Halleran, A.A.D. (1994) LREE-rich niobian titanite from Mount Bisson, British Columbia: chemistry and exchange mechanisms. Can. Mineral., 32, 575–87.
Sahama, Th.G. (1946) On the chemistry of the mineral titanite. Bull. Comm. Geol. Finlande, 138, 88–120.
Smith, A.L. (1970) Sphene, perovskite and coexisting Fe-Ti oxide minerals. Amer. Mineral., 55, 264–9.
Staatz, M.H., Conklin, N.M. and Brownfield, I.K. (1977) Rare earths, thorium, and other minor elements in sphene from some plutonic rocks in west-central Alaska. J. Res. USGS Survey, 5, 623–8.
Stoppani, F. and Curti, E. (1982) I minerali del Lazio. Olimpia, Firenze, 291 pp.
Washington, H.S. (1906) The Roman comagmatic region. Carnegie Inst. Wash. Publ. No., 57, 199 pp.
Woolley, A.R., Platt, R.G. and Eby, N. (1992) Niobian titanite and eudialite from the Ilomba nepheline syenite complex, north Malawi. Mineral. Mag., 56, 428–30.

Keywords

Zr- and LREE-rich titanite from Tre Croci, Vico Volcanic complex (Latium, Italy)

  • G. Della Ventura (a1), F. Bellatreccia (a1) and C. T. Williams (a2)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed