Mallickarjun,
The references below should provide you with enough information in solving
ferric - ferrous estimates.
GOMEZ, J. M. C. 1990. PX: A program for pyroxene classification and
calculation of end members. American Mineralogist, 75, 1426-1427.
CAWTHORN, R. G. & COLLERSON, K. D. 1974. The recalculation of pyroxene
end-member parameters and the estimation of ferrous and ferric iron content
from elctron microprobe analysis. American Mineralogist, 59, 1203-1208.
DROOP, G. T. R. 1987. A general equation for estimating Fe3+ concentrations
in ferromagnesian silicates and oxides from microprobe analysis, using
stoichiometric criteria. Mineralogical Magazine, 51, 431-435.
PAPIKE, J. J., CAMERON, K. J. & BALDWIN, K. 1974. Amphiboles and pyroxenes:
Characterization of other than quadrilateral components and estimates of
ferric iron from microprobe data. Geological Society of America, Abstracts
with programs, 6, 1053-1054.
At 04:03 01/25/01 +0530, you wrote:
>Dear All,
>I wonder if any one could help me with information about procuring the
>software for ferric iron estimation in pyroxenes (particularly for
>clinopyroxenes) from total iron estimated using routine probe analyses.
>Thanks.
>Mallickarjun Joshi
>Dept. of Geology
>Banaras Hindu University
>Varanasi-221 005
>INDIA
>Email: m_joshi@ satyam.net.in
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