Marble Silica Content

Occupational safety and health administration.

Marble silica content.

Calcium based stones including limestone and certain varieties of marble e g calcite dolomite and onyx contain little or no silica. In contrast granite can contain up to 45 50 silica. 38 42 lime cao 20 25 silica sio2 2 4 alumina al2o3 1 5 2 5 various oxides nao and mgo and 30 32 various carbonates mgco3 and others. Petrographically marbles are massive rather than thin layered and consist of a.

Typically marble is composed of the following major constituents. Exposure to silica which is a component found in marble dust is one risk factor for developing scleroderma. Marble total dust journal of clinical rheumatology. Marble granular limestone or dolomite i e rock composed of calcium magnesium carbonate that has been recrystallized under the influence of heat pressure and aqueous solutions.

The table below describes typical silica quartz content of common natural and engineered. Though granite marble and engineered stone all can produce harmful silica dust when cut ground or polished the artificial stone typically contains much more silica says a cdc researcher. Commercially it includes all decorative calcium rich rocks that can be polished as well as certain serpentines verd antiques. Silica content is generally lower in natural stone products.