Were is granite found?
also what is it's mineral make up, what are its uses, significance and how is it formed? thanks so much!!!
Asked by Benito Strittmater 1 year ago.
Granite is possibly the most common igneous rock type known to the general public. Granite, which is named for its "granular" or phaneritic texture, has crystals that tend to be easily seen, although they are generally small. It is a rock that has been used for centuries for many different purposes such as building material. Granite was used with limestone as a building material for the pyramids of Egypt. Its durability, beauty and abundance make it a preferred choice of stone over most others. Granite is also a source of many mineral specimens. Unfortunately, most of the crystals in a granite form anhedral crystals or crystals that lack their outward crystal shape. This is due to the way that the crystals grow into each other to form interlocking crystal frameworks. Although this gives granite its great durability, it limits its desirability as a source of mineral specimens. Occasionally there are pockets within a granite that crystals can form very nice specimens however. The crystals of granite form while the molten material inside the Earth's crust cools relatively slowly . Molten rock or magma that would have formed granite had it stayed in the Earth's crust, but instead managed to erupt onto the surface of the Earth, forms a rock called rhyolite. The two rock types have the same chemistry. Rhyolite however does not generally have the same texture and crystals are generally too small to see. If granite type rock has crystals that grow larger than a large pebble (roughly 3 cm or about 1 inch across) then it is called a pegmatite. The minerals that are found in granite are primarily quartz, plagioclase feldspars, potassium or K-feldspars, hornblende and micas. Quartz is usually the last mineral to crystallize and fills in the extra space of the other minerals. Quartz's hardness, lack of chemical reactivity and near lack of cleavage give granite a significant amount of its desirable durable properties. The quartz will appear gray, but is actually colorless and is reflecting and fusing the colors of the white and black minerals surrounding it. The plagioclase feldspars are generally white with a porcelaneous luster. The K-feldspars are generally the ones that give granite its color variations from yellow to orange to pink or blue. Dark K-feldspars can give granite its black varieties as well. The micas are generally muscovite (silver), biotite (black or brown) or lepidollite (violet or pink) and provide the sparkle that some granites possess. The hornblende and biotite provide granite with the black pepper portion of the famous and distinctive "salt and pepper" look to classic granite. Some accessory minerals include gemstones such as tourmaline, beryl, topaz, zircons and apatite. These minerals are generally scattered in the groundmass and generally do not affect the overall appearance of the stone. Other accessory minerals are important economically such as phosphates and rare earth oxides. Related to the rare earth elements is a significant concentration in granite of the element uranium. Granite is actually rather radioactive and has 5 to 20 times the concentration of uranium compared to other common rock types. Some health concern exists in areas that are rich in granitic terrain, as background radiation is enhanced by the presence of large granite bodies. Although the uranium is generally not concentrated enough to make granite a uranium ore, the leaching and erosion of granite has helped produce most of the uranium ore deposits around the world. Granite is a very general term and is applied to a whole host of different rocks. Many different granites have been identified based on their varied chemical and mineralogical compositions. Generally the term granite is used as a suffix to indicate its textural and general composition. If a granite is rich in lithium then the rock might be referred to as lithium granite. Also, petrologists may choose to classify different but similar granitic rock types by using the terms such as granodiorite or syeno-granite. Some granites are named according to their unusual characteristics. In some granites the feldspars had time to form rectangular crystals before quartz and the other minerals crystallized. The resulting rock appears to be a collection of unintelligible letters, numbers or figures and the rock is called "Graphic Granite". There are hundreds if not thousands of granites that are given local or marketable names. Some of these name are descriptive such as indicating an unusual color or indicate the source of the rock such as Pikes Peak Granite. Many of these granites are distinctive and many rocksmiths can easily distinguish where a sample came from. Some rocks are incorrectly called granites. Several course grained metamorphic rocks are incorrectly referred to as granites. Generally granite does not exhibit signs of metamorphism such as a layered pattern, metamorphic minerals present such as garnet or crystal orientation Answered by Yoko Faraone 1 year ago.
Where Is Granite Found Answered by Kristine Alphin 1 year ago.
Granite is mostly found in the mountains - good place to see an abdundant supply is half Dome or most of the other mountains in Yosemite or Sierra's, Devils Post, or Stone Mountain in Georgia where you can see how they used to take granite out of the mountain for construction stone. Most granite of found on the major continental divides or mountain ranges and is formed by magma from the Earth and forced up over millions of years. The chemical composition of granite can vary and will have different uses according to it's look for instance on kitchen counters to bathroom tubs. Answered by Lai Lohrman 1 year ago.
I was born in Leicestershire and within a few miles of my home there were four granite quarries, Bardon Hill, Whitwick and Cliffe Hill (Markfield) and Groby. My grandad worked at Bardon in the early years of the 20th century as an explosives operator, setting the explosives in preparation for the blasting. It is said that granite from Leicestershire has been used to surface roads all over the world. Answered by Lan Kinnamon 1 year ago.
Granite rock, which is indeed an intrusive igneous rock, is found in Mountain Ranges. For furthur information you should visit the following site which is given below i think it helps you alot for knowing about granite. Answered by Allan Yelin 1 year ago.
Stone is found in nature, having shaped from volcanic roots. Its appearance differs extraordinarily, with colors and examples relying upon the arbitrary position and blend of minerals that were incorporated amid its arrangement. There are many colors and examples accessible with stone. No two bits of stone appear to be identical, and a solitary piece may change incredibly in distinctive territories. Answered by Kasey Kleinman 1 year ago.
rterttrtrtrtt Answered by Velia Riedy 1 year ago.
EVERYWHWERE Answered by Sook Maisonave 1 year ago.