Experimental investigation on water solubility in olivine single crystals with different Fe content.

This paper reports the experimental results of water solubility in San Carl os olivine single crystals with different iron content hydrothermally annea led under a pressure of 300MPa and at a temperature from 1000 degreesC to 1 300 degreesC with 50 degreesC increments with oxygen fugacity controlled by the Ni/NiO buffer. The water content was analyzed using infrared spectra i n [010] direction of polished samples in crack-free and inclusion-free regi ons about 15 to 25 mum in diameter. From the FTIR analysis, it is observed that water content increases with iron content as well as temperature under the experimental condition we used. The implication of the test result to the dynamic process in earth mantle is discussed briefly as well.