Formula: PbTe3(Cl,S)2
Origin of name: for B.P. Radhakrishna, Indian geologist
Crystal system: tetragonal
Crystal class: 4/m
Twinning:
Unit cell:
Colour: rose-brown in reflected light
Diaphaneity: opaque
Luster:
Habit: irregular aggregates to 20 by 40 micron
Hardness:
Specific gravity: 8.89
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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