How does pyrolusite effect the decolorizing of glass containing iron?. From Wordnik.com. [An Elementary Study of Chemistry] Reference
The most important mineral is pyrolusite, because it is the main ore mineral for manganese. From Wordnik.com. [Manganese] Reference
Traces of pyrolusite in a chunk of raw glass, the result of a failure to produce colorless glass at Sagalassos. From Wordnik.com. [Interactive Dig Sagalassos - Glass Studies] Reference
The heat and carbon in the charcoal separated oxygen from the pyrolusite, leaving a metallic manganese residue. From Wordnik.com. [Manganese] Reference
The substitution of potassium chlorate for pyrolusite is recommended when calcium chloride is present in the bittern. From Wordnik.com. [Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"] Reference
In 1774, while heating the mineral pyrolusite (MnO2, manganese dioxide) in a charcoal fire, the Swedish scientist Johann Gahn discovered manganese. From Wordnik.com. [Manganese] Reference
The binoxide, or peroxide, is the black manganese of commerce, and the pyrolusite of mineralogists, and is by far the most abundant of the manganese ores. From Wordnik.com. [Scientific American Supplement, No. 401, September 8, 1883] Reference
The same pyrolusite (binoxide of manganese) cylinder used with the same thin rod of zinc will precipitate 75 per cent. more copper from solution in an hour when caustic potash is used than when sal ammoniac is employed. From Wordnik.com. [Scientific American Supplement, No. 392, July 7, 1883] Reference
One special find this week was a chunk of raw glass, showing an unhomogeneous color, probably as a result of an insufficient or failed addition of decolorant in a reduced furnace atmosphere (e.g. manganese in the form of the mineral pyrolusite). From Wordnik.com. [Interactive Dig Sagalassos - Glass Studies] Reference
The oxygen from the pyrolusite, leaving a metallic manganese residue. From Wordnik.com. [Featured Articles - Encyclopedia of Earth] Reference
Some famous chemists in Europe tried to analyze pyrolusite, but they were not successful. From Wordnik.com. [CreationWiki - Recent changes [en]] Reference
Like iron ores, manganese ores consist principally of the oxides of manganese (pyrolusite, psilomelane, manganite, wad, and others), and rarely the carbonate of manganese (rhodochrosite). From Wordnik.com. [The Economic Aspect of Geology] Reference
For example, 0.7560 gram of pyrolusite and 1.000 gram of iron were taken and treated as above; 13.9 c.c. of "permanganate" (standard 100 c.c. =. From Wordnik.com. [A Text-book of Assaying: For the Use of Those Connected with Mines.] Reference
In 1774, while heating the mineral pyrolusite (MnO. From Wordnik.com. [Featured Articles - Encyclopedia of Earth] Reference
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