Noun:

கண்ணாடி செய்ய உதவும் மாங்கனீஸ் என்னும் பொருள்,

manganese's Usage Examples:

The important manganese steels of commerce and certain nickel steels are manganiferous and niccoliferous austenite, unmagnetic and hard but ductile.

A white precipitate rapidly turning brown indicates manganese.

The analysis of manganese dioxide in 1774 led him to the discovery of chlorine and baryta; to the description of various salts of manganese itself, including the manganates and permanganates, and to the explanation of its action in colouring and decolourizing glass.

A simpler explanation is that the manganese dioxide first gives a normal sulphite which rearranges to dithionate, thus: Mn0 2 +2S0 2 Mn(S03)2-MnS206, whilst the lead dioxide gives a basic sulphite which rearranges to sulphate, thus: PbO-l-S0 2 PbOS03 - > PbS04.

Among the minerals are silver, platinum, copper, iron, lead, manganese, chromium, quicksilver, bismuth, arsenic and antimony, of which only iron and manganese have been regularly mined.

The chief minerals are sulphur, in the production of which Italy holds one of the first places, iron, zinc, lead; these, and, to a smaller extent, copper of an inferior quality, manganese and antimony, are successfully mined.

Of the impurities of the ore the wolframite (tungstate of iron and manganese) is the most troublesome, because on account of its high specific gravity it cannot be washed away as gangue.

The mineral wealth of the Cyclades has hitherto been much neglected; iron ore is exported from Seriphos, manganese and sulphur from Melos, and volcanic cement (pozzolana) from Santorin.

The mineral products of the district also include lignite, copper, manganese, vitriol, lime, gypsum, volcanic stones (used for millstones) and slates.

1 347), who has also suggested the use of manganese carbonate instead of magnesite, since the change of colour enables one to follow the decomposi 411ThEIZ P; FIG.

Recent experiments lead to the conclusion that iron, lead, manganese, lignite and sulphur exist in considerable abundance.

Where trace elements are used, boron plus cocktails of zinc, magnesium, manganese and sulfur will be applied.

Synonyms:

hausmannite, metallic element, Mn, rhodochrosite, atomic number 25, manganite, metal, pyrolusite, psilomelane,

Antonyms:

nonmetallic,