dannemorite

dannemorite

[‚dan·ə′mȯr‚īt]
(mineralogy)
(Fe,Mn,Mg)7Si8O22(OH)2 A yellowish-brown to greenish-gray monoclinic mineral consisting of a columnar or fibrous amphibole.
References in periodicals archive ?
Dannemorite [Mn.sub.2][(Fe,Mg).sub.5][Si.sub.8][O.sub.22][(OH).sub.2]
Dannemorite has been identified as a rare accessory mineral in skarn at the Nikolaevskiy mine.
The names manganocummingtonite and manganogrunerite replace the names "tirodite" and "dannemorite", respectively.