Other
Scientific paper
Nov 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985gecoa..49.2385w&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 49, Issue 11, pp.2385-2393
Other
Scientific paper
Glasses and crystals of compositions MgCaSi 2 O 6 , CoCaSi 2 O 6 and NiCaSi 2 O 6 were studied by high temperature solution calorimetry, x-ray diffraction, and pycnometry. These data were combined with trace element distribution data to obtain values for A G 0 , H 0 , S 0 , and V 0 for M -Mg exchange reactions. Enthalpies of vitrification increase in the order Co, Mg, Ni as do volumes of vitrification and apparent melting points. The mixing of Co and Mg, Ni and Mg, and Co and Ni is almost ideal in crystals and glasses, with small negative heats of mixing and small volume changes. The exchange reactions MgCaSi 2 O 6 ( xl ) + MCaSi 2 O 6 ( liq ) = MgCaSi 2 O 6 ( liq ) + MCaSi 2 O 6 ( xl ) are exothermic for Ni and endothermic for Co. The volumes and entropies of the exchange reaction are small.
Navrotsky Alexandra
Wright David P.
No associations
LandOfFree
A thermochemical study of the distribution of cobalt and nickel between diopsidic pyroxene and melt does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A thermochemical study of the distribution of cobalt and nickel between diopsidic pyroxene and melt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A thermochemical study of the distribution of cobalt and nickel between diopsidic pyroxene and melt will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-978301