Tuesday, 20 October 2015

STONE

CLAASSIFICATION OF STONE
Origin - How was it made?
•Sedimentary
•Metamorphic
•Igneous
•Man-Made
Composition - What is it made of?
•Silicates
•Calcium Carbonates

Classification of Rocks
Rocks Classification

Mineral Composition
Silicates
These stones are made mostly of quartz-like particles called silica. They are very hard, durable and generally acid resistant. Examples: granite, sandstone, slate and quartzite.

Calcium Carbonates
The minerals in these stones were formed under pressure over millions of years from the bodies of tiny fossilized creatures. These stones are softer, less durable than silicates and acid sensitive.
 Examples: limestone, marble and travertine

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