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pyrolusite
[ pahy-ruh-loo-sahyt, pahy-rol-yuh-sahyt ]
noun
- a common mineral, manganese dioxide, MnO 2 , the principal ore of manganese, used in various manufactures, as a decolorizer of brown or green tints in glass, and as a depolarizer in dry-cell batteries.
pyrolusite
/ ËŒ±è²¹Éª°ùəʊˈ±ô³Ü˲õ²¹Éª³Ù /
noun
- a blackish fibrous or soft powdery mineral consisting of manganese dioxide in tetragonal crystalline form. It occurs in association with other manganese ores and is an important source of manganese. Formula: MnO 2
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˜yÐÄvlog History and Origins
Origin of pyrolusite1
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˜yÐÄvlog History and Origins
Origin of pyrolusite1
C19: from pyro- + Greek lousis a washing + -ite 1, from its use in purifying glass
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Example Sentences
Examples have not been reviewed.
Heated in an ignition tube yields water in abundance, otherwise it behaves like pyrolusite.
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Manganese is found in nature chiefly as the dioxide MnO2, called pyrolusite.
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The substitution of potassium chlorate for pyrolusite is recommended when calcium chloride is present in the bittern.
From
The chlorine generated by the pyrolusite is passed into a solution of potassium iodide.
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Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc.
From
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