mendipite
/ˈmɛndɪpʌɪt/Mineralogy
noun
Native lead oxychloride, Pb3Cl2O2, an orthorhombic mineral usually occurring as columnar or fibrous white masses.
Origin
Mid 19th century; earliest use found in Henry Watts (1815–1884), chemist. From German Mendipit from the name of the MendipHills, Somerset, where the mineral was first found + -it.