| Description |
xi, 279 leaves : illustrations ; 29 cm |
| Summary |
"X-ray intensity and d-spacing measurements were performed upon samples in the system Li₂O-SiO₂. Samples ranged from 0.0 to 28.0 mole percent lithia and were fired for 72 hours at temperatures from 920°C to 1400°C. Atomic absorption analyses were made upon the fired samples. Non-equilibrium conditions were prevalent and results are inclusive. Quartz is the stable phase in the high silica field at temperatures below 1050°C with cristobalite stable above that. The quartz - cristobalite transformation occurs at 950°C with the cristobalite transforming into tridymite at 1010°C. There was wide scattering of data at 1000°C and below. There was no correlation between d or intensity values with composition. At higher temperatures, there is a definite relationship. First order least squares calculated lines were fitted to all points with high correlation coefficients. An IBM-360 computer was utilized to compute all data"--Abstract, leaf ii. |
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