Formula: Cu4Ag3Te4
Origin of name: For Norman Henry, British mineralogist
Crystal system: Cubic
Crystal class: Unknown
Twinning:
Unit cell:
Colour: Pale blue in reflected light
Diaphaneity: Opaque
Luster:
Habit: Three microscopic anhedral grains 0.1 to 0.8 mm
Hardness: 3
Specific gravity: 7.86
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments: From one polished section
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