from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A gray-white or silvery brittle metallic element, occurring in several allotropic forms, found worldwide, especially in the ores pyrolusite and rhodochrosite and in nodules on the ocean floor. It is alloyed with steel to increase strength, hardness, wear resistance, and other properties and with other metals to form highly ferromagnetic materials. Atomic number 25; atomic weight 54.9380; melting point 1,244°C; boiling point 1,962°C; specific gravity 7.21 to 7.44; valence 1, 2, 3, 4, 6, 7. See Table at element.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A metallic chemical element (symbol Mn) with an atomic number of 25.
from the GNU version of the Collaborative International Dictionary of English
- n. An element obtained by reduction of its oxide, as a hard, grayish white metal, fusible with difficulty (melting point 1244° C), but easily oxidized. Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc. Symbol Mn. Atomic number 25; Atomic weight 54.938 [C=12.011].
from The Century Dictionary and Cyclopedia
- n. Chemical symbol, Mn; atomic weight, 55. A metal having a remarkable affinity for, and in some respects a close resemblance to, iron, of which it is an extremely frequent associate.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals
Bronze again is improved by the presence of manganese in small quantity, and various grades of _manganese bronze_, in some of which there is little or no tin but a considerable percentage of zinc, are extensively used in mechanical engineering.
The word manganese comes from the Latin word magnes which means magnet.
A spokesman for the company, Mark Petrarca, says its emissions reports are accurate but that its manganese is trapped in flakes that usually fall to the shop floor and are moved off the site.
Mineral Resources last week entered into a long-term manganese sales deal with China's largest steel maker Baosteel, with ore to be sourced from its Woodie Woodie and Peak Hill operations in Western Australia, and flagged possible further deals in future.
Mineral Resources Ltd has entered into a long-term manganese sales deal with China's largest Baosteel and flagged possible further deals in future. manganese ore will be sold in both lump and fines form and will come from Mineral Resources said the deal cemented an existing relationship between it and
MINING services and processing firm Mineral Resources Ltd has entered into a long-term manganese sales deal with China's largest steel maker Baosteel and flagged possible further deals in future.
Sigabi said inhaled manganese fumes or dust primarily affected the central nervous system, while high concentrations would cause flu-like illnesses referred to as manganese pneumonitis.
These nodules are mostly manganese and so are called manganese nodules.
The paints are made from the clay or from crushed manganese, which is also mined locally.
The carbonate forms the mineral known as manganese spar.