CIVIL SNAPS – BUILDING MATERIALS
Important varieties of Iron ores
Name |
Percentage of Iron |
Other names |
Colour |
Magnetite (FeSO4) | 70 – 73% | Black oxide of iron |
Black |
Haematite (Fe2O3) |
65 – 70% | Red oxide of iron | Iron black/steel grey |
Limonite (2Fe2O3.3H2O) | 60% | Brown Haematite |
Brown, yellow, yellowish brown |
Pyrites (FeS2) |
45 – 47% | Sulphide of Iron | Pale yellow, Brass yellow |
Siderite (FeCO3) | 40% | Carbonate of Iron |
Yellow, Brownish red |
CIVIL SNAPS – BUILDING MATERIALS
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CIVIL SNAPS – BUILDING MATERIALS
Nice point