cacoxenite Min.
(kæˈkɒksɛnaɪt)
Also cacoxene.
[f. Gr. κακο- bad + ξέν-ος guest + -ite; so called because its presence in iron ore is injurious.]
A native phosphate of iron, containing also water, peroxide of iron, and phosphoric acid, occurring in radiated tufts of yellow or brownish-yellow colour. (Dana.)