Pigotite is a mineral named after its discoverer, Henry J. Pigott. Its chemical formula is Mg3(PO4)2·8H2O. The word is pronounced /ˈpɪɡətaɪt/, where the first syllable is stressed and the "o" is pronounced as ah. The second syllable is pronounced as "go" with a "t" sound at the end. The "i" is short and pronounced as "ih". The final "te" is pronounced as "tay". The spelling of "pigotite" is unique and is not commonly found in everyday vocabulary.
A mineral compound of alumina and mudeseous acid, having a brownish-yellow colour, found as incrustations on the sides of caves, &c.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.