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Volume 7 (1968)
- Issue 3-4 Pages 41-
- Issue 1-2 Pages 1-
Volume 7, Issue 3-4
Displaying 1-3 of 3 articles from this issue
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Hajime TANAKA1968Volume 7Issue 3-4 Pages 41-50
Published: March 30, 1968
Released on J-STAGE: September 20, 2011
JOURNAL FREE ACCESSDownload PDF (1132K) -
Fumikazu KANEMARU1968Volume 7Issue 3-4 Pages 51-61
Published: March 30, 1968
Released on J-STAGE: September 20, 2011
JOURNAL FREE ACCESSDownload PDF (1182K) -
Sakuro HONDA, Toshio NEGISHI1968Volume 7Issue 3-4 Pages 62-74
Published: March 30, 1968
Released on J-STAGE: September 20, 2011
JOURNAL FREE ACCESSMiocene Pyroclastic rocks, mainly composed of glassy tuffs, are distributed at Futat-sui-machi, Yamamoto-gun, Akita Prefecture, Japan. The clinoptilolite in these rocks is altered product from volcanic glass.
The X-ray powder data of this clinoptilolite agrees well with that of the specimen Patagonia, and all diffraction peaks of the heated material at 900°C, disappear except 4Å of cristobalite. In differential thermal analysis, only one endothermic peak is observed between 100°C and 300°C. The cation exchange capacity is 150-180 m. e./100 g. This clinoptilolite is a soda-rich variety, by their chemal anslyses, and electron micrographs show that this specimen is platy shape.View full abstractDownload PDF (6165K)
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