Hg in metamorphic rocks

Details Hg in metamorphic rocks Hg in metamorphic rocks

Mar 1968

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1968gecoa..32..341j&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 32, Issue 3, pp.341-346

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Scientific paper

The concentration of Hg in the regionally metamorphosed politic schists, gabbroic rocks and in quartz, magnetite and hematite from metamorphosed iron formation rocks reported here ranged from tenths of ppb to tenths of ppm. The concentrations did not vary in a systematic way. However, in stepwise heating experiments the fraction of the total Hg released at higher temperatures, i.e. above 450°C, generally tended to increase with the reported increase in metamorphic grade. This is analogous to trends noted in chondritic meteorites. The Hg may thus reflect the thermal history of the sample and serve as a possible geothermometer.

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