manganous+silicate

См. также в других словарях:

• manganese processing — Introduction       preparation of the ore for use in various products.       Manganese (Mn) is a hard, silvery white metal with a melting point of 1,244° C (2,271° F). Ordinarily too brittle to be of structural value itself, it is an essential… …   Universalium

• chemical element — Introduction also called  element,         any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.       This article considers the… …   Universalium

• zoisite — /zoy suyt/, n. Mineral. an orthorhombic dimorph of clinozoisite. [1795 1805; named after Baron S. Zois von Edelstein (1747 1819), Slovenian nobleman who discovered it; see ITE1] * * * ▪ mineral  silicate mineral, calcium and aluminum silicate,… …   Universalium

• iron processing — Introduction       use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting.       Iron (Fe) is a… …   Universalium

• romanechite — ▪ mineral       barium and manganese oxide [(Ba, H2O)2(Mn4+, Mn3+)5O10], an important ore mineral of manganese. A secondary mineral formed under surface conditions, it is often a dark gray to black alteration product of manganous carbonate or… …   Universalium