Formula: (Sr,La,Ce,Ca)4(Fe,Fe)(Ti,Zr)4Si4O22
Origin of name: from strontium and chevkinite
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: gray
Diaphaneity:
Luster: submetallic
Habit: rounded grains, to 1.5 mm, twinned
Hardness: 5
Specific gravity: 5.44
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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