The Collaborative International Dictionary
Romeine \Ro"me*ine\, Romeite \Ro"me*ite\, n. [F. rom['e]ine. So calledafter the French mineralogist Rom['e] L'Isle.] (Min.) A mineral of a hyacinth or honey-yellow color, occuring in square octahedrons. It is an antimonate of calcium.
Wiktionary
n. (context mineralogy English) A yellow calcium antimonate mineral occurring in square octahedrons.
Wikipedia
Roméite is a calcium antimonate mineral with the formula (Ca,Fe,Mn,Na)(Sb,Ti)O(O,OH,F). Roméite is a honey-yellow mineral crystallizing in the hexoctahedral crystal system. It has a Mohs hardness of 5.5-6.0. It occurs in Algeria, Australia, Brazil, China, Europe, Japan, New Zealand, and the United States in metamorphic iron- manganese deposits and in hydrothermal antimony-bearing veins.
Its type locality is Prabornaz Mine, Saint-Marcel, Aosta Valley, Italy. It was named after Jean-Baptiste L. Romé de l'Isle. Brugger, et al. (1997) used infrared spectroscopy to measure water content in Roméite crystals.