Wad

KCON claim, USA-4, Clarion-Clipperton Zone, 13°N 127°W, Pacific Ocean
© Antonio Borrelli

Colour:	Black, bluish, brownish ...	Hardness:	1 - 6½
A generic name for (often poorly crystalline) soft manganese oxides/hydroxides, often containing significant amounts of hydroxides/oxides of other metals and adsorbed metals (iron and other transition metals, alkali elements, etc.) See also Manganese Oxides.

Classification of Wad

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Physical Properties of Wad

Lustre:

Dull, Earthy

Colour:

Black, bluish, brownish black

Streak:

Black, bluish or brownish black, reddish brown, liver-brown

Hardness (Mohs):

1 - 6½

Density (measured):

2.8 - 4.4 g/cm³

Other Names for Wad

Synonyms:

Black Wad	Bog Manganese	Earthy manganese	Earthy Ocher of Manganese	Groroilite
Hydrohausmannite (of Boldyrev)	Hydromanganite	Hydromanganosite	Hydropyrolusite	Hydroxybraunite
Magnesia friabilis terriformis	Mangangraphite	Manganschwärze	Manganseerz	Ouatite
Pelagite	Reissacherite	Schwarz Braunsteinerz	Wadite

German names:

Brauner Eisenrahm	Groroilit	Hydromanganit	Hydromanganosit	Hydropyrolusit
Hydroxybraunit	Mangangraphit	Manganomelan	Manganschaum	Ouatit
Pelagit	Wadit

Italian names:

Vod

Spanish names:

Groroilita	Hydromanganita	Hydromanganosita	Hydropyrolusita	Hydroxybraunita
Mangangraphita	Ouatita	Pelagita	Reissacherita	Wadita

Varieties:

Cobaltian Wad	Cuprian Wad	Ferrian Wad	Lithian Wad	Manganoxydaluminit
Wackenrodite

Other Information

Health Warning:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Wad

Reference List:

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 566-567.