Low-temperature heat capacities of synthetic pyrope, grossular, and pyrope 60 grossular 40

Details Low-temperature heat capacities of synthetic pyrope, grossular, and pyrope 60 grossular 40 Low-temperature heat capacities of synthetic pyrope, grossular, and pyrope 60 grossular 40

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980gecoa..44..701h&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 44, Issue 5, pp.701-709

Physics

25

Scientific paper

The heat capacities of synthetic pyrope (Mg 3 Al 2 Si 2 O 12 ), grossular (Ca 3 Al 2 Si 3 O 12 ) and a solid solution pyrope 60 grossular 40 (Mg 1.8 Ca 1.2 Al 2 Si 3 O 12 ) have been measured by adiabatic calorimetry in the temperature range 10-350 K. The samples were crystallized from glasses in a conventional piston-cylinder apparatus. The molar thermophysical properties at 298.15 K (J mol -1 K -1 ) are: The values for the end members are significantly greater than those presented previously for natural samples of pyrope and grossular. The pyrope 60 grossular 40 exhibits an excess heat capacity below 120 K; the maximum occurs at 45-50 K. The anomalously high heat capacity of pyrope at low temperatures and the excess heat capacity of the solid solution are apparently caused by the unusually large, eight-fold coordination of Mg 2+ in the garnet structure.

Affiliated with

Also associated with

No associations

Rating

Low-temperature heat capacities of synthetic pyrope, grossular, and pyrope 60 grossular 40 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 Low-temperature heat capacities of synthetic pyrope, grossular, and pyrope 60 grossular 40, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-temperature heat capacities of synthetic pyrope, grossular, and pyrope 60 grossular 40 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1359367