9405050 Kesler This is a preliminary study of the Vergenoeg iron-fluorite deposit in South Africa. Vergenoeg consists if fluorite and iron oxides and is closely associated with silicic extrusive rocks. Research a Vergenoeg will attempt to answer two questions. The first question involves the nature of fluid phases present during formation of the deposits, which should clarify the relation between silicate and iron oxide magmas and the possible role of volatile phases(s) in causing the heavy iron oxide phase to extrude. The second question is why the immiscible iron oxide phase separated from the silicate magma, if indeed it did. We plan to map these rocks, verify the stratigraphic position of iron ore in the sequence and then look for any changes in the oxygen isotope composition of the silicic rocks, which might relate to introduction of ground (e.g. meteoric) water.

Agency
National Science Foundation (NSF)
Institute
Division of Earth Sciences (EAR)
Type
Standard Grant (Standard)
Application #
9405050
Program Officer
Sonia Esperanca
Project Start
Project End
Budget Start
1994-08-15
Budget End
1996-05-31
Support Year
Fiscal Year
1994
Total Cost
$25,000
Indirect Cost
Name
University of Michigan Ann Arbor
Department
Type
DUNS #
City
Ann Arbor
State
MI
Country
United States
Zip Code
48109