Formula: NaHCO3
Origin of name: combination of symbols for elements
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: colourless, white, gray to brown or black from impurities
Diaphaneity: transparent to translucent
Luster: vitreous to resinous
Habit: crystals prismatic, elongated on c-axis, friable aggregates, fibrous veinlets, concretionary crystalline masses
Hardness: 2.5
Specific gravity: 2.21
Cleavage: 3; {101} perfect, {111} good, {100} distinct
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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