Isokite and Triplite from Bohemia

D. Jerome Fisher
Dept. of Geology, University of Chicago, Illinois, U.S.A.

Summary: Isokite (CaMgPO4F), a new mineral homologous with sphene, was described late in 1955 from a Rhodesian carbonatite plug. A fine-grained variety is now reported from Bohemia, where it occurs as a replacement of (probably a hydrothermal alteration product of) coarse medium brown ‘later’ triplites. It is intimately associated with fine-grained apatite that along with quartz formed post-isokite.

Mineralogical Magazine; September 1957 v. 31; no. 238; p. 587-602; DOI: 10.1180/minmag.1957.031.238.05
© 1957, The Mineralogical Society
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