roweite
/ˈrəʊʌɪt/Mineralogy
noun
A very rare mineral formed by the hydrothermal alteration of manganese ore and occurring as pinkish-brown nodular masses.
- Roweite is a basic borate of calcium and manganese (with traces of other metals), Ca2Mn2B4O7(OH)6. Crystal system: orthorhombic..
Origin
1930s. From the name of George Rowe, Cornish-born U.S. mine official of Franklin, New Jersey, also a collector of local minerals and owner of one of very few specimens of roweite + -ite.