Litharge

oxide

Formula: PbO simple oxide
Specific gravity: 9.14
Hardness: 2
Streak: Red
Colour: Red
Solubility: Litharge is easily fusible, and soluble in hydrochloric and nitric acid. Slowly soluble in alkalis . (Dana)
Environment

Metamorphic environments
Hydrothermal environments

Litharge occurs as alteration crusts on massicot, with the change occurring at 488oC, and by alteration of other lead-bearing minerals.

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