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Thermal diffusivity measurement of rock-forming minerals from 300° to 1100°K

Kanamori, Hiroo and Fujii, Naoyuki and Mizutani, Hitoshi (1968) Thermal diffusivity measurement of rock-forming minerals from 300° to 1100°K. Journal of Geophysical Research, 73 (2). pp. 595-605. ISSN 0148-0227. doi:10.1029/jb073i002p00595.

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Measurement of thermal diffusivity, K, of fused silica, quartz, olivine, periclase, jadeite, garnet, spinel, corundum and alkali feldspar was made at 1‐atm pressure and over the temperature range from 300° to 1100°K. All the samples are of gem quality but of millimeter size. The Ångström method was slightly modified to be applicable to small samples. For all the minerals except feldspar 1/κ increases almost linearly with temperature up to 700°K, as expected from the theory of lattice conduction. Tightly packed minerals, such as periclase, spinel, and corundum, have a diffusivity 3 to 10 times as large as that of other minerals. At temperatures higher than 700°K, 1/κ decreases with temperature for some minerals. This decrease can be interpreted as being due to radiative heat transfer within the crystals, if the opacity of the minerals is in the range 6 to 20 cm^(−1). High‐temperature optical data are essential for a detailed discussion of the radiation effect.

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Kanamori, Hiroo0000-0001-8219-9428
Additional Information:© 1968 American Geophysical Union. (Received June 12, 1967.) We wish to thank Drs. Akira Karo, Shohei Banno, and Naoki Isshiki for supplying many of the samples used in this study. We owe much of the crystallographic and optical data to Drs. Syun-iti Akimoto, Yasuhiko Syono, and Shigeo Aramaki and Mr. Yasuo Nakamura. We are grateful to Drs. Francis Birch, Gene Simmons, and William H. K. Lee for many valuable suggestions that are included in the final manuscript. We thank Dr. Seiya Uyeda for his criticism.
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Official Citation:Kanamori, H., N. Fujii, and H. Mizutani (1968), Thermal diffusivity measurement of rock‐forming minerals from 300° to 1100°K, J. Geophys. Res., 73(2), 595–605, doi: 10.1029/JB073i002p00595.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91295
Deposited By: George Porter
Deposited On:29 Nov 2018 21:58
Last Modified:16 Nov 2021 03:40

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