Knebelite n. : A mineral of a gray, red, brown, or green color, and glistening luster. It is a silicate of iron and manganese.

Example:


Taxonomy
free encyclopedia, search, manganese, formula, dark green, borosilicate, Personal tools, Interaction, Toolbox, Languages, non-profit organization, silicate mineral, Manganese minerals, Manganese nodule, fayalite, orthorhombic crystals, Sweden, South Africa.

Defination from the web:
Knebelite. From Wikipedia, the free encyclopedia. Jump to: navigation, search. Knebelite is a silicate mineral, a manganese variety ... · Calderite · Chloritoid · Eudialyte · Glaucochroite · Jeffersonite · Knebelite · Ottrelite · Piemontite · Pyroxferroite · Rhodonite · Spessartine ...