Formula: PbO2
Origin of name: from scrutiny (needed to identify)
Crystal system: orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: dark reddish brown
Diaphaneity: translucent
Luster: submetallic
Habit: very small crystals 25 to 30 micron across by 1 to 2 micron thick
Hardness:
Specific gravity:
Cleavage: 2; {100} perfect, {010} imperfect
Tenacity:
Streak: dark brown
Synonyms/varieties:
Comments: dimorphous with plattnerite
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