wilkeite

wilkeite

[′wil·kē‚īt]
(mineralogy)
Ca5(SiO4,PO4,SO4)3(O,OH,F) A rose red or yellow, hexagonal mineral consisting of a basic sulfate-silicate-phosphate of calcium.
References in periodicals archive ?
In recognition of his efforts to save California pegmatite specimens, the new mineral wilkeite was described and named by Eakle and Rogers in 1914, but in 1982 was unfortunately discredited as P-rich fluorellestadite.