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VS
Manjiroite
Name
—
Na(Mn⁴⁺₇Mn³⁺)O₁₆
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Tetragonal
Crystal system
—
—
Mohs hardness
—
4.29
Specific gravity
—
Brownish black
Streak
—
Dull
Luster
—
—
Cleavage
—
—
Space group
—
Coronadite
Structural group
—
Mji · Approved
IMA
—
1966
Named in
—
Dark brownish gray; yellowish gray-white in reflected light
Typical colors
—
Na · Mn · O
Elements
—