Wad

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KCON claim, USA-4, Clarion-Clipperton Zone, Pacific Ocean
© Antonio Borrelli

Colour:	Black, bluish, brownish ...	Hardness:	1 - 6½
A Mixture Of:	Asbolane, Lithiophorite, Nsutite, Takanelite, Vernadite

A generic name for (often poorly crystalline) soft manganese oxides/hydroxides, often containing significant amounts of hydroxides/oxides of other metals and adsorbed metals (Ni, Co, Cu, Fe, 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 Ocher	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	Wadite

Other Languages:

German:	Brauner Eisenrahm Groroilit Hydromanganit Hydromanganosit Hydropyrolusit Hydroxybraunit Mangangraphit Manganomelan Manganschaum Ouatit Pelagit Schwarzes Braunsteinerz Wadit
Italian:	Wad Vod
Portuguese:	Wad
Simplified Chinese:	锰土

Spanish:	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.