Formula: Ca8Mg(SiO4)4Cl2
Origin of name: for the collectors Alice and Eugen Rondorf, who discovered the mineral
Crystal system: Isometric
Crystal class: 2/m 3
Twinning:
Unit cell: a = 15.085
Colour: Orange-brown, amber brown
Diaphaneity: Transparent to translucent
Luster: Vitreous
Habit:
Hardness:
Specific gravity: 3.03
Cleavage: None
Tenacity: Brittle, conchoidal fracture
Streak: Pale yellow
Synonyms/varieties:
Comments:
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