anthosiderite

anthosiderite Min.

(ænθəʊˈsɪdəraɪt)

[f. Gr. ἄνθο-ς flower + σιδηρίτης iron-stone: see -ite.]

A hydrous silicate of iron occurring in fibrous tufts or feathery flowers.

1837–80 Dana Min. 407.