dixenite

dixenite

[′dik·sə‚nīt]
(mineralogy)
Mn5(SiO3)(AsO3)(OH)2 A black hexagonal mineral consisting of a manganese arsenite and silicate, occurring in scales.
References in periodicals archive ?
Arakiite is megascopically indistinguishable from either hematolite or dixenite and possesses the following physical properties: steak is pale brown; lustre is resinous to submetallic; diaphaneity is opaque (masses) to translucent (thin edges); non-fluorescent; hardness is estimated at 3-4; cleavage is {001} perfect; tenacity is brittle; fracture is uneven, almost subconchoidal; calculated density is 3,41 g/[cm.
It is a portion of a larger specimen (BM1921, 310) which was labeled as dixenite from L[dot{a}]ngban, V[ddot{a}]rmland, Sweden, and was initially acquired by the museum in 1921 from Mr.
Araki, in close collaboration with Professor Paul Moore, solved the structures of many complex P-bearing and As-bearing phases, including those of hematolite and dixenite.