Abstract
fl 119 ~ 38'~:15'. Space-group P21/m or P2 r Cell vohme, 797 ~a. The presence of a centre of symmetry is suggested by the fact that a negative result was given for the Glebe and Scheibe test for piezoelectricity. These data show close agreement with those of Braitsch, although fi is slightly greater. The only two examples of p-veatchite so far described occur in evaporites of marine origin. The German material was found in waterinsoluble residues from the Zechstein 'Xltere Steinsalz' below the Stassffirt Potash Zone, in the potash mine KSnigshall-Hindenburg, Reyershausen. Its associates are halite and anhydrite, with small quantities of clay, boracite, pyrite, quartz, and magnesite. The Yorkshire mineral has the same associates, with the exception of boracite, Veatchite, on the other hand, has been found in Californian localities associated with colemanite and howlite, partly in veins cutting lime
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