An empirical nine-parameter linear mixing model was developed to estimate the liquidus temperature of zirconia-bearing technical lithium alumosilicate glasses that contain up to 12 major components. The model covers glasses that are suitable as precursor glasses for beta-quartz or beta-spodumene-type glass ceramics with low coefficients of thermal expansion. Molar coefficients of liquidus temperatures are provided for each component. A self-consistency test results in a standard deviation between predicted and measured liquidus temperatures of 7.5 degrees C, within a range of approximately 200 degrees C and for a typical experimental error of 10 degrees C.