Ochre Minerals
Name and Composition - Natural pigments, variable hydrous ferric oxide, mainly Goethite: Fe2O3nH2O with some clayey minerals and other impurities.
Physical Properties - It is yellow, reddish brown coloured earthy forms of limonite.
Mode of Occurrence - Occurs as bedded & pocket deposit.
Uses - Used in paint, cement, rubber, glass, linoleum, plastic industries and foundries, oil paints, lacquers, primers and also for imparting colour to paper and cement.
Mineral based Industries – Paint, moulding industries, and cement industries.
Industrial Prospects – Paint, moulding industries.
Physical Properties
Hardness
Sp. gr.
Refractive Index
Density
Sp. gr.
Refractive Index
Density
4.0 to 5.5
3.0 to 3.5
2.260 to 2.398
2.9 to 4.3 g/cm3
3.0 to 3.5
2.260 to 2.398
2.9 to 4.3 g/cm3
Chemical Properties
Chemical formula
Toxicity
Types
Toxicity
Types
Fe2O3nH2O
Non
Antimony Ochre, Bismuth Ochre, Iron Ochre, Lead Ochre and Molybdic Ochre.
Non
Antimony Ochre, Bismuth Ochre, Iron Ochre, Lead Ochre and Molybdic Ochre.
Indian Minerals
Metallic Minerals
Cadmium Ore
Copper Ore
Lead Ore
Zinc Ore
Iron Ore
Manganese Ore
Tungsten Ore
Bauxite Ore
Limestone and Dolomite
Limestone
Dolomite
Fertilizer Minerals
Gypsum
Pyrite
Rock Phosphate
Saltpeter
Fuel Minerals
Lignite
Glass and Ceramic Minerals
Ball Clay
China Clay
Feldspar
Fire Clay
Kyanite
Quartz
Quartzite
Silica Sand
Precious and Semiprecious Minerals
Aquamarine
Emerald
Industrial Minerals
Asbestos
Barytes
Bentonite
Calcite
Fluorite
Fuller's Earth
Garnet
Graphite
Magnesite
Mica
Mill Stone
Ochre
Pyrophylite
Siliceous Earth
Silimanite
Soapstone
Vermiculite
Wollastonite
Dimensional and Building Stone
Granite
Limestone - Flaggy
Marble
Rhyolite
Sandstone
Serpentinite
Shale/Schist/Phyllite
Slate