newberyite
/ˈnjuːb(ə)rɪˌʌɪt/Mineralogy
noun
A hydrated orthorhombic magnesium acid phosphate, MgH(PO4)·3H2O, which occurs as colourless crystals.
Origin
Late 19th century; earliest use found in Mineralogy Magazine. From German Newberyit from the name of J. Cosmo Newbery (19th-cent. Australian mineralogist) + -it.