"Claringbullite" is a rare mineral that was discovered in 1992 in the Allenheads Mine, Northumberland, England. The word "claringbullite" is pronounced /ˈklærɪŋbʌlaɪt/ (KLA-ring-bul-ite) and is spelled following the IPA phonetic transcription system. The mineral is named in honor of the late Dr. George Claringbull, a renowned British mineralogist. It is a tetragonal mineral that is usually colorless, although it may sometimes have a yellow or brown tint. Its chemical formula is KGMg2Si4O10F2.