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Home » Minerals » Limonite

Limonite


Mineral Properties and Uses



Physical Properties of Limonite

Chemical Classification amorphous, mineraloid
Color medium to dark yellowish brown
Streak yellowish brown
Luster dull to earthy
Diaphaneity opaque
Cleavage because limonite is a mixture of other minerals it has no cleavage of its own
Mohs Hardness 1 to 5
Specific Gravity 2.7 to 4.3
Diagnostic Properties variable - can be yellow-brown, brown, redish brown
Chemical Composition FeO(OH)ĚnH2O
Crystal System amorphous to cryptocrystalline
Uses a minor ore of iron


Limonite - Yellow Ocher
Yellow Ocher, a variety of limonite that has been used by people for thousands of years. This specimen from Cartersville, Georgia, is in finely powdered form.


Limonite with goethite
Limonite with goethite from Ironton, Minnesota. Specimen is approximately 2-1/2 inches (6.4 centimeters) across.



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Limonite
Limonite from Newport, New York. Specimen is approximately 2-1/2 inches (6.4 centimeters) across.




Limonite from NY
Limonite from Newport, New York. Specimen is approximately 2-1/2 inches (6.4 centimeters) across.


Limonite
Limonite after pyrite from Pelican Point, Utah. Specimen is approximately 2 inches (5 centimeters) across.


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