What is marble?
Marble is metamorphosed limestone composed of calcite pure enough (a crystalline form of calcium carbonate, CaCO3). It is widely used for carving, as construction material, and in many other applications.
Faux marble or faux marbling is a wall painting technique that imitates the real marble color patterns (not to be confused with paper marbling). marble dust can be combined with cement or synthetic resins to make reconstituted or cultured marble. Places named after the stone include Marble Hill, Manhattan, New York and the City of Marble, Minnesota. The Elgin Marbles are marble sculptures taken from the Parthenon in Britain by the Earl of Elgin. Marble backgrounds
Marble is a metamorphic rock resulting from regional or contact metamorphism times sedimentary carbonate rocks, either limestone or dolomite. This metamorphic process causes a complete recrystallization of the original rock in a calcite locking mosaic and / or dolomite crystals. The temperatures and pressures necessary to form marble usually destroy any fossils and sedimentary textures present in the original rock.
Pure white marble is the result of a very pure limestone metamorphism. The characteristic swirls and veins of many colored marble varieties are usually due to various mineral impurities such as clay, silt, sand, iron oxides, or chert which were originally present as grains or layers in the limestone. Green color is often due to serpentine resulting from initially high magnesium limestone or dolomite with silica impurities. These various impurities have been mobilized and recrystallized by the intense pressure and heat of the metamorphism.
Marble types
Some historically important types of marble, named after the locations of their careers include:
Carrara (Italy)
Penteli (Greece)
Proconnesus (Turkey)
White marbles like Carrara, were prized for carving since ancient times. This preference has to do with the softness and relative isotropy and homogeneity, and resistance compared to shattering. In addition, the low refractive index of calcite allows light to penetrate several millimeters into the stone before being scattered, resulting in the characteristic look "waxy" which gives "life" to marble sculptures of the human body .
marble construction
In the construction trade, the term "marble" is used for any massive, crystalline calcitic rock (and some non-calcitic rocks) useful as building stone. For example, Tennessee Marble is really a massive gray, very fossiliferous to pink to maroon Ordovician dolostone, known as the Holston training by geologists.
Etymology
The word "marble" derives from the Greek marmaros, "shining stone" (OED). This stem is also the basis for the English word "marmoreal" meaning "marble."
Cultural associations
As the preferred medium for sculptors and Greek and Roman architects, marble has become a cultural symbol of tradition and refined taste. Its extremely varied and colorful patterns make it a favorite decorative material, and are often imitated - eg in background patterns for computer displays.
In folklore, marble is associated with the astrological sign of Gemini. Pure white marble is an emblem of purity. It is also an emblem of immortality, and ensurer success in education.
Marble is metamorphosed limestone composed of calcite pure enough (a crystalline form of calcium carbonate, CaCO3). It is widely used for carving, as construction material, and in many other applications.
Faux marble or faux marbling is a wall painting technique that imitates the real marble color patterns (not to be confused with paper marbling). marble dust can be combined with cement or synthetic resins to make reconstituted or cultured marble. Places named after the stone include Marble Hill, Manhattan, New York and the City of Marble, Minnesota. The Elgin Marbles are marble sculptures taken from the Parthenon in Britain by the Earl of Elgin. Marble backgrounds
Marble is a metamorphic rock resulting from regional or contact metamorphism times sedimentary carbonate rocks, either limestone or dolomite. This metamorphic process causes a complete recrystallization of the original rock in a calcite locking mosaic and / or dolomite crystals. The temperatures and pressures necessary to form marble usually destroy any fossils and sedimentary textures present in the original rock.
Pure white marble is the result of a very pure limestone metamorphism. The characteristic swirls and veins of many colored marble varieties are usually due to various mineral impurities such as clay, silt, sand, iron oxides, or chert which were originally present as grains or layers in the limestone. Green color is often due to serpentine resulting from initially high magnesium limestone or dolomite with silica impurities. These various impurities have been mobilized and recrystallized by the intense pressure and heat of the metamorphism.
Marble types
Some historically important types of marble, named after the locations of their careers include:
Carrara (Italy)
Penteli (Greece)
Proconnesus (Turkey)
White marbles like Carrara, were prized for carving since ancient times. This preference has to do with the softness and relative isotropy and homogeneity, and resistance compared to shattering. In addition, the low refractive index of calcite allows light to penetrate several millimeters into the stone before being scattered, resulting in the characteristic look "waxy" which gives "life" to marble sculptures of the human body .
marble construction
In the construction trade, the term "marble" is used for any massive, crystalline calcitic rock (and some non-calcitic rocks) useful as building stone. For example, Tennessee Marble is really a massive gray, very fossiliferous to pink to maroon Ordovician dolostone, known as the Holston training by geologists.
Etymology
The word "marble" derives from the Greek marmaros, "shining stone" (OED). This stem is also the basis for the English word "marmoreal" meaning "marble."
Cultural associations
As the preferred medium for sculptors and Greek and Roman architects, marble has become a cultural symbol of tradition and refined taste. Its extremely varied and colorful patterns make it a favorite decorative material, and are often imitated - eg in background patterns for computer displays.
In folklore, marble is associated with the astrological sign of Gemini. Pure white marble is an emblem of purity. It is also an emblem of immortality, and ensurer success in education.
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