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GraniteSource.in - Granites & Natural Stones WWW Server The Only Web Bookmark (We Fondly Hope) You Will Ever Need for Granites & Other Natural Stones
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Granites – The Basics
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Granite is a tough, durable rock composed primarily of three different minerals –feldspar, quartz and biotite or mica. The white mineral grains – perhaps the most abundant found in granite - are feldspar. The light gray, glass-like grains are quartz, and the black grains are biotite or black mica. – Useful Granite Information – its Weight, Composition…, Granite from Wikipedia
Granites in various parts of the world have different ages. For instance, those at the bottom of the Grand Canyon have ages of about 1.5 billion years (yikes, that is 1,500,000,000 years!). There are granites that are almost 2 billion years old, and granite formations in some other parts have ages of only about 100 million years (that is just 100,000,000 years, a rather young age, wouldn’t you agree!).
Crystalline Rocks of the Western UP, Origin of Granite
Granite is available in three main varieties: Biotite Granite, Hornblende Granite, Tourmaline Granite. Of these, the Biotite variety is the most prevalent. Based on the composition and colour, there are granites that have hundreds of different shades. India, one of the major granite producing countries, alone has over 200 shades of granites.
Varieties of Granites, Granite Types & Their Fractionation, Granite Types from India
There are very many colours and shades that granites appear in. To name a few Black – Absolute Black Blue - Daisy Blue Brown - Tan Brown Green - Tropical Green, Emerald Green, Sea Green, Pista Green, Emerald Green, Sea Weed Green Grey - Steel Gray Ivory Pink - Deep Pink Purple Red - Ruby Red Rose Silk – Raw Silk Teak White
Granite Products Colours & Shapes, Granite Colours & Types for Flooring, Kitchen Countertops – Trends, Stones & More
Granites have several possible origins. Granites are formed by one or more of the following processes: (1) Magmatic processes, by crystallization of minerals from a magma (melted silicate rock), (2) Melting of sedimentary rocks, and, (3) by chemical replacement processes
Stones & Quarries, Granite Colors – ChooseBy Stone Encyclopedia
Some pictures of granites
See a row of Brazilian granites – Tables of Stone site Brazilian granites, countertops and kitchen tops – Brazil Stones Granites with larger crystals – Natural Stone Interiors site Granite used as a table top / wash room table top – Eskandari Stone White color granites – from Find Stone site Pics of green granites used as table tops and counter tops – Barefoot Floor Absolute black polished granite – Choose By site A black granite statue – About.com A closeup of a Labador Green granite – Granite Direct USA site Raw Silk Ivory Granite Slabs – Granite Exporter
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Granites – Production & Producers
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It is expected that the total natural stone – including granites - production in 2005 will be about 160,000,000 metric tons. The major stone producing countries are China, Italy, Spain, India, Brazil & Korea.
The largest consumers of natural stone are China, Italy, Germany, USA, Spain, Japan, India, and France.
Italy, Spain, Canada, Brazil, India, Mexico, China, Turkey, Israel
Granites are mainly found in the south and central India, in and around what is known as the Deccan plateau.
Some Issues on the Future of Gujarat Granites (MS Word Document)
Granites occur in many parts of the world, but some countries have larger deposits than others. According to currently available data, the following countries have significant amount of granite deposits: Angola, Brazil, Canada, China, Finland, India, Iran, Italy, Namibia, Spain, South African Transkei, Ukraine, USA, Zimbabwe.
Never ask a woman her age, a man his salary…and a trader the price! Well, it is not easy to give an answer about prices in a short sentence since it depends on the type of granite you are looking for (Absolute Black, Black Galaxy etc..), whether you wish to procure a granite block, a tile, a slab or a monument, and so on. Add to it the fact there could be volume discounts. And you got to consider costs of transportation. So here is a price framework: · Base price of a granite product – usually in sq ft or sq meters unless you are looking at purchasing a granite block in which case it would be cu.ft or cu. Meters · Transportation costs – if you are taking control of the product directly from the factory, then what is charged is FOB (freight on board). If there is transportation required from the factory to your location, it would be CIF (cost, insurance and freight).
Indian Granite Exporters Hit by Price Slump, Om Group’s Granite Furniture Plans
Granite is cut from the bed of the quarry with a jet piercing machine that produces a flame burning at very high temperatures. This high-velocity flame is directed at the granite to be removed. As the flame nozzle is moved up and down, a channel is created around large sections in the quarry. In some quarries, diamond wire saws are used. A long loop of small steel cable, impregenated with industrial diamond segments, cuts the sections free from the bed of the quarry. After a section has been completely wiresawed or channeled by the burner, it is separated from the bottom by explosives. Likewise, when high-speed drills are used, rows of drilled holes are loaded with explosives. The explosives are detonated to free the sections of granite on all sides and on the bottom. The large sections are then broken into workable sizes by wedging. In this process, steel wedges are driven manually into holes previously drilled along the desired line of cleavage. The sections are readily forced apart and cross-wedged into rectangular blocks. Large cranes, or derricks, lift these blocks to the quarry's rim.
See also: New Concepts in Quarrying Technology, Innovative Design for Diamond Wire Saw Systems, Proposal for the Excavation of Granite, White Paper on Granite Production, Barre Granite Association,
Granites are in the form of large blocks right after they are quarried (Granite Blocks from India – World Stonex)
Blocks are moved from the quarries. Blocks are then sent to the factories for sawing. After the uneven portions of the blocks are dressed with a wire saw, the blocks are cut into slabs by gang saw machines and polished by line polishing machines. Large and powerful machines called “gang saws” – essentially a number of saws working together – are used to cut granite blocks into slabs – The Quarrying & Manufacturing Process from Elberton Granite, Crafting a Mausoleum – the Slabbing Process
Fabrication Case Study – Automated Enhancement of Granite Slabs Strid Marble & Granite Company – How We Do It
Granite blocks are first cut to stone strips on a block-cutter with multiple cutting discs. Once the blockcutter creates stone strips, the strips are polished and cut on tile lines to ensure a perfectly calibrated size and finish. A slight bevel is then added at the edge of each piece to create a cushioned edge that will eliminate the sharpness.
Marble & Granite Tiles Tech Data (PDF), Granite Processing Info from Pokarna Granites, India
· How are granite monuments and memorials manufactured?
The granite blocks, taken from the quarries, are delivered to finishing plants where large diamond saws cut through the rough block of granite.
Once the blocks are sawed into slabs, smaller saws may be used to further define their size and shape. Sometimes, slabs relatively large slabs are fed into "guillotines" that effortlessly breaks the granite slabs into sizes needed for monuments and markers.
· Automatic polisher applying a mirror-like finish to the granite · Large, diamond-tipped saws for cutting through a granite block · Computerized diamond wire saws that offer flexibility in shaping the granite and are used to cut the slabs into unusual shapes · Grinding, buffing pads and abrasives - used by granite polishing mills - to systematically create a mirror-like finish · Hammers, razor-sharp carbide tipped chisels, pneumatic tools, and sandblasting equipment to further carve, shape and define each individual monument. These are normally used by sandblasters
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Granites – Products & Applications |
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The three primary end products are: (see also: Granite Tiles & Slabs FAQ from Build Direct) · Slabs – used for kitchen countertops and related areas · Tiles – used for flooring and related interior and exterior cladding · Monuments & Memorials – used primarily as gravestone memorials (Story of a Monument – Dakota Granite, The Making of Mount Rushmore, Yahoo Directory for Monuments & Markers, Granite Memorials Information from the Barre Granite Industry Page, United States Memorials Suppliers Listing from Open Directory)
Typically, the granite blocks from the quarry are cut into slabs, which in turns can be further cut into tiles or made into memorials.
The main applications of natural stone are in:
The primary end-uses of granites are in the form of slabs, tiles, setts and monuments.
Kitchen Counters – An Overview of Materials, The Virtues of Granite Jewelry FAQs about Using Stone in Your Home,
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Granites – Focus India
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India has over 200 different shades of granites. These are distributed in many geographical locations in South India. Some of the primary locations of granite quarries in India are Bangalore and its surrounding areas, Chennai, Madurai, Hyderabad and some other areas in the state of Andhra Pradesh. Each location is known for specific types and shades of granites. More info from: Granite Types from India
The following are the major granite and natural stone associations in India: CDOS, Capexil. More info at: India Stone & Related Products Association
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Granite – Product Details
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· Difference between First Quality, Commercial Quality and Second Quality Granites: o First Quality materials comprises granites that are of very high quality and polished to be of a high gloss; There are no visual defects in the material. o Commercial Quality usually means that the polish is not quite as good and that there will be some obvious defects such as small natural hairline cracks and maybe some blotches in the material. A good sawyer and fabricator can use the slab to good use. These can be considered to be excellent buys for money since they are significantly cheaper than the first quality granites. o Second Quality granites will have many repairable natural defects and, most likely, blotches in the material. These should be typically used only where high quality is not of utmost importance.
Granites have interesting names. Typically (but not always), one would find the components in a granite name: The name of the location or country (for instance Brazilian Pink) and the color of the granite (Absolute Black). While in many cases the location part might not be present (eg., Chilli Red), most time the name of a granite will have a color component. Some typical names of granites are: Colombo Juparana, Jaipur Silk, Absolute Black, Black Galaxy, Bacardi White, Black Fantasy, Dakota Mahagony
The World’s Most Popular Granites (MS Word Format), Most Popular Granites & Marbles
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Complete List of Granites Products
By Product
List of Cities for Granite Sourcing
By Cities
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Granite Companies
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Prominent Granite Companies
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Miscellaneous Granite & Natural Stone Resources
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Directories & News
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Granite Research
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Reference
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Reference
This site is operated by eSource. This site provides directory and web links resources It is intended to be useful for research and information as well as for buyers, sellers, manufacturers, traders, suppliers, producers, exporters, providers and importers. It will make an effort to provide related info and link, details on trade & market resources, data, statistics such as price, prices, demand-supply for buyer, seller, manufacturer, trader, supplier, exporter, provider and producer.
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