The exact chemical composition of marble will greatly vary dependong on the location and the minerals or impurities present in the limestone during recrystallization.
Marble chemical formula acid.
When sulfurous sulfuric and nitric acids in polluted air and rain react with the calcite in marble and limestone the calcite dissolves.
It happens on the surface of the marble or limestone and the fine details on the facade of the structures made with them are being lost.
It is used for acid neutralization in the chemical industry as well.
How does this happen.
38 42 lime cao 20 25 silica sio2 2 4 alumina al2o3 1 5 2 5 various oxides nao and mgo and 30 32.
In exposed areas of buildings and statues we see roughened surfaces removal of material and loss of carved details.
Marble is commonly used for sculpture and as a building material.
Although these are recognized as highly durable materials buildings and outdoor monuments made of marble and limestone are now being gradually eroded away by acid rain.
Stone surface material may be lost all over or only in spots that are more reactive.
It is one of the most effective acid neutralization materials.
Marble is a metamorphic rock composed of recrystallized carbonate minerals most commonly calcite or dolomite marble is typically not foliated although there are exceptions in geology the term marble refers to metamorphosed limestone but its use in stonemasonry more broadly encompasses unmetamorphosed limestone.
Marble is often crushed and used for acid neutralization in streams lakes and soils.
Acid rain contains sulfuric acid which reacts with calcium carbonate to create aqueous ions.
A chemical reaction equation 9 between calcium carbonate and sulfuric acid the primary acid component of acid rain results in the dissolution of caco.