Granite – Bhandari Marble Group
Granite is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture. Granites can be predominantly white, pink, or gray in color, depending on their mineralogy. The word “granite” comes from the Latin granum, a grain, in reference to the coarse-grained structure of such a holocrystalline rock. By definition, granite is an igneous rock with at least 20% quartz and up to 65% alkali feldspar by volume.
Granite Countertops |Granite Building Stone | Granite Backsplash | Granite Tile | Granite Paving Stone | Granite Facing Stone | Granite Memorial | Granite Curbing | Granite Slabs
Colors of Granite
Black Granite, White Granite, Green Granite, Blue Granite, Grey Granite, Red Granite, Pink Granite, Brown Granite
Bhandari Marble Group is a renowned organization across the globe in the marble and granite trade. The Company is situated in the heart of the Aravalli range at Kishangarh, the City which has earned the distinction as the most important center in India for quarrying and commercialization of marble. Bhandari Marble Group owns two mechanized quarries of high quality Verde Guatemala marble SRA, Verde Guatemala SRF, Verde Guatemala RB at Bhandari, Rainbow and Teak quarry at Khatu, White Marble quarry in Kelva and Desert Gold Granite , Desert Green Granite, Desert Brown Granite , Desert Fantasy Granite and Black Granite Quarries. The Quarrying is done by latest Chain Saws, Wire saws, Loaders and Derrick Cranes. The factory, spread over an area of 20000 sq.meters, is equipped with the latest new generation state of the art plant and machinery, imported from Simec spa, Italy, for cutting and polishing of marble blocks. Bhandari’s business motto is total customer satisfaction and that is why they are today recognized as one of the leading companies in production and export of green marble, granite and sandstones. Based on the company’s commendable past performance its products have been well appreciated in more than 55 countries across the world, where these have been exported since 1995. Bhandari has, in the past, won several export promotion awards instituted by the Government of India.
Bhandari’s business motto is total customer satisfaction and that is why they are today recognized as one of the leading companies in production and export of green marble, granite and sandstone. Based on the company’s commendable past performance its products have been well appreciated in more than 70 countries across the world, where these have been exported since 1969.
Granite as a Building Material
Granite is one of the most popular building materials. It has been used for thousands of years in both interior and exterior applications. Granite dimension stone is used in buildings, bridges, paving, monuments and many other exterior projects. Indoors, polished granite slabs and tiles are used in countertops, tile floors, stair treads and many other design elements. Granite is a prestige material, used in projects to produce impressions of elegance and quality. Some interesting uses of granite are shown below.
What is “Granite”?
The definition of “granite” varies. A geologist might define granite as a coarse-grained, quartz- and feldspar-bearing igneous rock that is made up entirely of crystals. However, in the dimension stone trade, the word “granite” is used for any feldspar-bearing rock with interlocking crystals that are large enough to be seen with the unaided eye. By this classification, rocks such as anorthosite, gneiss, granite, granodiorite, monzonite, syenite, gabbro and others are all sold under the trade name of “granite”.
The term “granitic” means granite-like and is applied to granite and a group of intrusive igneous rocks with similar textures and slight variations in composition and origin. These rocks mainly consist of feldspar, quartz, mica, and amphibole minerals, which form an interlocking, somewhat equigranular matrix of feldspar and quartz with scattered darker biotite mica and amphibole (often hornblende) peppering the lighter color minerals. Occasionally some individual crystals (phenocrysts) are larger than the groundmass, in which case the texture is known as porphyritic. A granitic rock with a porphyritic texture is known as a granite porphyry. Granitoid is a general, descriptive field term for lighter-colored, coarse-grained igneous rocks. Petrographic examination is required for identification of specific types of granitoids.
Granite differs from granodiorite in that at least 35% of the feldspar in granite is alkali feldspar as opposed to plagioclase; it is the potassium feldspar that gives many granites a distinctive pink color. The extrusive igneous rock equivalent of granite is rhyolite.
Granite is nearly always massive (lacking any internal structures), hard and tough, and therefore it has gained widespread use throughout human history, and more recently as a construction stone. The average density of granite is between.
Granite is classified according to the QAPF diagram for coarse grained plutonic rocks and is named according to the percentage of quartz, alkali feldspar (orthoclase, sanidine, or microcline) and plagioclase feldspar on the A-Q-P half of the diagram. True granite according to modern petrologic convention contains both plagioclase and alkali feldspars. When a granitoid is devoid or nearly devoid of plagioclase, the rock is referred to as alkali feldspar granite. When a granitoid contains less than 10% orthoclase, it is called tonalite; pyroxene and amphibole are common in tonalite. A granite containing both muscovite and biotite micas is called a binary or two-mica granite. Two-mica granites are typically high in potassium and low in plagioclase, and are usually S-type granites or A-type granites.
A worldwide average of the chemical composition of granite, by weight percent, based on 2485 analyses.
Outcrops of granite tend to form tors and rounded massifs. Granites sometimes occur in circular depressions surrounded by a range of hills, formed by the metamorphic aureole or hornfels. Granite is usually found in the continental plates of the Earth’s crust.
Granite is currently known to exist only on Earth, where it forms a major part of the continental crust. Granite often occurs as relatively small, less than 100 km² stock masses (stocks) and in batholiths that are often associated with orogenic mountain ranges. Small dikes of granitic composition called aplites are often associated with the margins of granitic intrusions. In some locations, very coarse-grained pegmatite masses occur with granite.
Granite has been intruded into the crust of the Earth during all geologic periods, although much of it is of Precambrian age. Granitic rock is widely distributed throughout the continental crust and is the most abundant basement rock that underlies the relatively thin sedimentary veneer of the continents.
Granite has a felsic composition and is more common in recent geologic time in contrast to Earth’s ultramafic ancient igneous history. Felsic rocks are less dense than mafic and ultramafic rocks, and thus they tend to escape subduction, whereas basaltic or gabbroic rocks tend to sink into the mantle beneath the granitic rocks of the continental cratons. Therefore, granitic rocks form the basement of all land continents.
Granitoids are a ubiquitous component of the crust. They have crystallized from magmas that have compositions at or near a eutectic point (or a temperature minimum on a cotectic curve). Magmas will evolve to the eutectic because of igneous differentiation, or because they represent low degrees of partial melting. Fractional crystallisation serves to reduce a melt in iron, magnesium, titanium, calcium and sodium, and enrich the melt in potassium and silicon – alkali feldspar (rich in potassium) and quartz (SiO2), are two of the defining constituents of granite.
This process operates regardless of the origin of the parental magma to the granite, and regardless of its chemistry. However, the composition and origin of the magma that differentiates into granite leaves certain geochemical and mineral evidence as to what the granite’s parental rock was. The final mineralogy, texture and chemical composition of a granite is often distinctive as to its origin. For instance, a granite that is formed from melted sediments may have more alkali feldspar, whereas a granite derived from melted basalt may be richer in plagioclase feldspar. It is on this basis that the modern “alphabet” classification schemes are based. Granite has a slow cooling process which forms larger crystals.
Sculpture and memorials
Various granites (cut and polished surfaces)
In some areas, granite is used for gravestones and memorials. Granite is a hard stone and requires skill to carve by hand. Until the early 18th century, in the Western world, granite could only be carved by hand tools with generally poor results.
A key breakthrough was the invention of steam-powered cutting and dressing tools by Alexander MacDonald of Aberdeen, inspired by seeing ancient Egyptian granite carvings. In 1832, the first polished tombstone of Aberdeen granite to be erected in an English cemetery was installed at Kensal Green Cemetery. It caused a sensation in the London monumental trade and for some years all polished granite ordered came from MacDonalds. Working with the sculptor William Leslie, and later Sidney Field, granite memorials became a major status symbol in Victorian Britain. The royal sarcophagus at Frogmore was probably the pinnacle of its work, and at 30 tons one of the largest. It was not until the 1880s that rival machinery and works could compete with the MacDonald works.
Modern methods of carving include using computer-controlled rotary bits and sandblasting over a rubber stencil. Leaving the letters, numbers and emblems exposed on the stone, the blaster can create virtually any kind of artwork or epitaph.
The rock known as “black granite” is usually gabbro, which has a completely different chemical composition
Granite has been extensively used as a dimension stone and as flooring tiles in public and commercial buildings and monuments. Aberdeen in Scotland, which is constructed principally from local granite, is known as “The Granite City”. Because of its abundance, granite was commonly used to build foundations for homes in New England. The Granite Railway, America’s first railroad, was built to haul granite from the quarries in Quincy, Massachusetts, to the Neponset River in the 1820s. With increasing amounts of acid rain in parts of the world, granite has begun to supplant marble as a monument material, since it is much more durable. Polished granite is also a popular choice for kitchen countertops due to its high durability and aesthetic qualities. In building and for countertops, the term “granite” is often applied to all igneous rocks with large crystals, and not specifically to those with a granitic composition.
BHANDARI MARBLE GROUP SUPPLIER, MANUFACTURER, EXPORTER, WHOLESALE, FACTORY OWNER OF MARBLES FROM KISHANGARH, RAJASTHAN, INDIA!
Bhandari Marble Group
headquartered at Kishangarh in the State of Rajasthan, India, is a large scale set up engaged in Business of natural stone, processing and selling. BHANDARI MARBLE GROUP is having world class manufacturing facilities. Since last forty six years the company also exporting varieties of Marble Blocks to all over and after processing the same at BHANDARI MARBLE GROUP processing house selling in the World marble stone and Granite market. That’s why BHANDARI MARBLE GROUP FAMOUS For The pioneer company of marble granite and Natural stone.
Bhandari marble company
The pioneer company of marble granite and Natural stone.
Kishangarh, Rajasthan, India.
Bhandari marble company
The pioneer company of marble granite and Natural stone.
Kishangarh, Rajasthan, India.