614 CHARLES PAPP 
Furthermore, that ore is very adaptable to the proouction of chlorine 
and calcium chloride, as it always contains the reguired 6090 of Mn0O,, and 
as it does not contain any noxious aluminium carbonate. Occasionally the 
yield in iron is high, which is not desirable, but, luckily, the deposit is of 
such a nature that it is easy to distinguish the pure from the impure. Im 
picking out the iron-bearing ore, one would get an excellent material for the 
working of ferromanganese and spiegeleisen. 
As it has already been mentioned, the ore of Godinesd — Tomasesd — 
Petresd is a pyrolusite with 4090 to 5090 of Mn. The metal exists there under 
the form of MnO,. A sample of lower guality from the mine Zanoga con- 
tained, according to the essay of K. Emszr, 396290 of MnO,, tbat is 30-6990 
metalic manganese. It is a second-clas ore. Another sample has given 62:26 
Mn0O, — 41757 metalic Mn. That is a first-elass ore. 
In the mine cHopes,, Mr. J. Szirágyi has found : 
Insoluble in acids — 20906, Fc.O09,— 72090, Mn0, — 712090 (metalic 
Mn — 45999. But also wholesaling it, according to the testimony of the 
Smelting Works of Rimamurány— Salgótarján (Imtd) it has been sold: 
10 tons second-elass ore with .. .. .. 307299 Mn 
15 c first-elass € a fs É 397246 c 
The best ore of all is the pyrolusite yielded from the deposit of the 
valley Meruluj (described under A) which contains according to the essay of 
M. K. Emszr, 7390 of S-0,, 60790 of Fe.O,, 43990 of AlI,O,. 0-8590 of 
CaO, 01799 of Sulphur, 58190 of water, and 74-8290 of MnO,, that is 57-96 90 
of metalic manganese. 
As the theoretically pure pyrolusite contains 63-290 of manganese, we 
can see how pure this ore is, in the valley of Meruluj. 
Enumerated deposits contain chiefly pyrolusite, that is to say a soft ore. 
It is the best of all manganese ores. It is not always pure, it is sometimes 
associated with limonite, but that does not matter much, because they can 
easily be separated. 
Besides the pyrolusite, in some deposits, there are also other manganese 
ores, such as manganite, polyanite and wad. But pyrolusite predominates. 
Pyrolusite is a very important mineral for industries. It is used, not 
only in the making of the combinations of manganese, but also in the making 
of oxigen, chlorine and chlorates. 
It is used also in the decoloration of glass and tinting it in violet, for 
decoloring enamel and dying stuff. It is also used in matches and fire-works. 
Of course, of all the enumerated uses, the one for chlorine is the most im- 
portant. In heating the ore with muriatic acid, it produces chlorine. In this 
respect the presence of carbonates in noxious, but the ores of Godinesd con- 
tain only some traces of it. 
The most important role played by manganese ores is in the making of 
iron and manganese alloys. About 9/10 of the manganese ores in the world 
are employed in making specular pig-iron and ferromanganese. An iron ore 
