Formula: NaNa2(Mg,Fe)2Fe2LiSi8O22(OH)2
Origin of name: For Bernard E. Leake, Scottish petrologist
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Deep red
Diaphaneity: Translucent
Luster: Vitreous
Habit: Prismatic
Hardness: 6
Specific gravity: 3.11
Cleavage: 1; {110}
Tenacity:
Streak: Pale pink
Synonyms/varieties:
Comments: Series with ferroleakeite
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