Iron loss in titanomagnetites during low temperature oxidation

Author(s): Ryall, P. J. C.; Hall, J. M.
Author Affiliation(s): Primary:
Dalhousie Univ., Dep. Geol., Halifax, NS, Canada
Volume Title: Journal of Geomagnetism and Geoelectricity
Source: Journal of Geomagnetism and Geoelectricity, 32(10), p.661-660. Publisher: Society of Terrestrial Magnetism and Electricity of Japan, Tokyo, Japan. ISSN: 0022-1392 CODEN: JGEGAB
Note: In English. 21 refs.; illus.
Summary: Curie T and cubic cell edges were measured for titanomagnetite from 43 basalt samples from DSDP Leg 37. Plots of FeO-TiO2-Fe2O3 show a clear decrease in the Fe/Ti ratio from 4.48 for z = 0, x = 0.545 to 2.58 for z = 0.8. The latter value is lower than that calculated for a titanomaghemite with x = 0.545, z = 0.8 for which Fe/Ti = 3.75. These results suggest that either the oxidation products do not remain single-phase cation-deficient titanomagnetites or the Curie T and cell-edge contours require refinement before being used for quantitative identification of these properties. A standardized technique for picking Curie T needs to be adopted by all workers.
Year of Publication: 1980
Research Program: DSDP Deep Sea Drilling Project
Key Words: 18 Geophysics, Solid-Earth; Alteration; Atlantic Ocean; Basalts; Cenozoic; Deep Sea Drilling Project; Holocene; Igneous rocks; Ions; Leg 37; Magnetization; Mid-Atlantic Ridge; Minerals; Ocean floors; Oceanography; Oxidation; Oxides; Paleomagnetism; Petrology; Quaternary; Remanent magnetization; Tectonophysics; Titanomagnetite; Volcanic rocks
Coordinates: N450000 N450000 W0300000 W0340000
Record ID: 1981036672
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom