Regionally metamorphosed greisens at Cetoraz, the Bohemian-Moravian Heights (Českomoravská vrchovina), Czechoslovakia
Tóm tắt
Investigation of the greisen occurrence at Cetoraz, Bohemian-Moravian Heights, which underwent a regional metamorphism, has shown that the main greisen assemblages are stable under the conditions of regional metamorphism, as long as they do not attain the sillimanite-almandine-orthoclase subfacies, when muscovite disappears. The ore minerals are also stable. In the mineralogy of the greisens, the regional metamorphism manifests itself only by the presence of subordinate minerals typical of regional metamorphism, such as sillimanite or spinel.
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