دماسنجی کلریت

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Kranidiotis and MacLean (1987) modified the Cathelineau and Nieva (1985) expression by calculating a corrected AlIiv value (Al^IV_c ) as follows: Al^IV_c = Al^IV+ 0.7(Fe/[Fe + Mg]), from which the temperature, T (in °C) is then computed according to:
T = 106 Al^IV_c + 18
Kranidiotis and MacLean (1987) argued that their function is applicable to situations where chlorite grows in an "Al-saturated environment," i.e., in the presence of other aluminous minerals.
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Cathelineau (1988) suggested that equation of T (˚C) = -61.92 + 321.98 Al^IV has the potential to be used as a chlorite geothermometer of general applicability in diagenetic, hydrothermal, and metamorphic settings because the value of AlIV appears to be independent of rock Lithology.
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Jowett (1991) suggested a similar type of correction, derived from an isothermal Fe/(Fe + Mg) normalization compositions:
Al^IV_c = Al^IV+ 0.1 (Fe/ (Fe + Mg))
T (°C) = 319 Al^IV_c - 69
Jowett (1991) claimed that this Fe-Mg-modified geothermometer is applicable to a variety of systems in
the range 150~ to 325~ for chlorites with Fe/(Fe +Mg) values < 0.6.