TY - JOUR
T1 - Study of the oxidation states and magnetic properties of iron in volcanic glasses
T2 - Lipari and Teotihuacan obsidians.
AU - Regnard, J. R.
AU - Chavez-Rivas, F.
AU - Chappert, J.
PY - 1981
Y1 - 1981
N2 - XRF, XRD, EM, Mossbauer spectroscopy, magnetization measurements, and electron microprobe analyses have been used to study the oxidation state of two samples of obsidian from Lipari and from near Teotihuacan, central Mexico. The Lipari obsidian contains isolated iron (mainly Fe2+) and ultrafine (<100 A) clusters of magnetite, whereas the Mexican material contains both Fe2+ and Fe3+ in addition to the magnetite clusters (100-900 A) representing about 50% of the total Mossbauer absorption. -R.A.H.
AB - XRF, XRD, EM, Mossbauer spectroscopy, magnetization measurements, and electron microprobe analyses have been used to study the oxidation state of two samples of obsidian from Lipari and from near Teotihuacan, central Mexico. The Lipari obsidian contains isolated iron (mainly Fe2+) and ultrafine (<100 A) clusters of magnetite, whereas the Mexican material contains both Fe2+ and Fe3+ in addition to the magnetite clusters (100-900 A) representing about 50% of the total Mossbauer absorption. -R.A.H.
UR - http://www.scopus.com/inward/record.url?scp=0019706554&partnerID=8YFLogxK
U2 - 10.3406/bulmi.1981.7457
DO - 10.3406/bulmi.1981.7457
M3 - Artículo
VL - 104
SP - 204
EP - 210
JO - Bulletin de Mineralogie
JF - Bulletin de Mineralogie
ER -