. . . . . . . . . . . . . . . . . . . . . . . . . . . "Semipelite - A type of metasedimentary rock composed largely of quartz, feldspar and mica. In the Rock Classification Scheme, it is one with mica component 20 - 40%, and quartz + feldspar 60 - 80% of quartz + feldspar + mica. The mica component includes all minerals other than quartz and feldspar, with the exception of calcsilicate and carbonate minerals. British Geological Survey Research Report RR/99/02, section 3.2, table 1 and fig. 5."@en . . . . "SEMPEL"@en . . . . . . . . . . . . . "Semipelite"@en . . . . . . . . . "Semipelite"@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . "stable"@en . .