Thermal Alteration of Silica Minerals: An Archeological Approach
- 23 July 1971
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 173 (3994), 322-325
- https://doi.org/10.1126/science.173.3994.322
Abstract
Extensive experiments indicate that the application of heat to flint materials may have conferred an advantage to primitive man in the manufacture of chipped-stone implements. When Florida cherts are slowly heated to between 350° and 400°C and maintained at this temperature for sustained periods, a desirable change occurs in the fracture properties. This alteration takes place when the melting point of the impurities within the intercrystalline spaces is reached; thus the microcrystals of quartz are fitted closer together when materials other than quartz serve as fluxes.Keywords
This publication has 1 reference indexed in Scilit: