Formula: K2Cr2O7
Origin of name: For E. Lopez, Chilean collector
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell:
Colour: Orange, orange-red
Diaphaneity: Transparent
Luster: Vitreous
Habit: Minute spherical aggregates
Hardness: 2.5
Specific gravity: 2.69
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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