Stable mineral assemblages of igneous rocks : a method of calculation / A. Rittmann. With contributions by V. Gottini [and others]. Rittmann, Alfred, 1893-1980. Igneous rocks. Mineralogy. QE461 .R58 552.1 RIS Includes bibliographical references and index. Berlin ; Heidelberg ; New York : Springer, 1973. 1973. 1973 Text xiv, 262 p. : eng Minerals, rocks and inorganic materials ; 7