Physical tests are based on the texture, appearance, colour and odour of limestone. Limestone showing amorphous textures are suitable for making lime.
Chalk and fat lime deposits are white or whitish-brown or grey in colour. Magnesium limestone is distinguished from its heaviness and hardness.
Limestone with white, bluish-grey, yellow or brown colours are suitable for producing hydraulic lime. These limestones show a compact texture with an irregular dull fracture. A freshly fractured surface of such limestone has an earthy smell and is clayey in taste.
Leave a Reply