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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy >
Vol.XIX, Nos.1-2 >
Whiteness in Colour of Talc
| Title: | Whiteness in Colour of Talc |
| Authors: | Togari, Kenji Browse this author |
| Issue Date: | Mar-1979 |
| Publisher: | 北海道大学 |
| Journal Title: | 北海道大学理学部紀要 |
| Journal Title(alt): | Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy |
| Volume: | 19 |
| Issue: | 1-2 |
| Start Page: | 213 |
| End Page: | 220 |
| Abstract: | Whiteness in colour of talc is one of the most useful property in commercial uses, and it is used in ceramics and as a filler in paint, paper, and rubber. The present writer has carried out some quantitative studies on the whiteness as one of physical properties with the automatic photo-electric spectrometer. Consequently, whiteness value being calculated by the Hunter equation amounts to 88.9% for the maximum. In general, however, the talc contains the other minerals as impurities, therefore the whiteness in colour of talc decreases from 88.9% to 72.3% with the increase of impurities. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/36684 |
| Appears in Collections: | Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy > Vol.XIX, Nos.1-2
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