johannsenite

johannsenite

[jō′han·sə‚nīt]
(mineralogy)
CaMnSi2O6 A clove-brown, grayish, or greenish clinopyroxene mineral composed of a silicate of calcium and manganese; a member of the pyroxene group.
References in periodicals archive ?
An uncommon clinopyroxene in the area, johannsenite was occasionally collected at the Molinello mine in veins in the manganese ore, as pale apple-green masses up to several centimeters, and sometimes as well-formed crystals.
Some of what was initially thought to be diopside from the Bor pit has proven to be the manganese pyroxene, johannsenite.
Andradite (*)Acanthite Arsenopyrite Benavidesite Bournonite Bustamite Cerussite Enargite Ferroan tephroite (*)Fluorite Friedelite Grossular Jamesonite Johannsenite Magnetite Manganaxinite Mangan-pyrosmalite Marcasite Miargyrite Orpiment Polybasite (*)Proustite (*)Pyrargyrite (*)Pyrite Realgar Rhodonite Siderite (*)Silver Stibnite Uchucchacuaite Wollastonite