Sodium From Wikipedia‚ the free encyclopedia This article is about the chemical element. For the PlayStation Home game‚ see Sodium (PlayStation Home). For the racehorse‚ seeSodium (horse). "Natrium" redirects here. For the town in West Virginia‚ see Natrium‚ West Virginia. Sodium 11Na
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very slowly some take thousands of years‚ which makes larger size grains called Phanertic texture. The classification of each rock is based on the minerals that it is made up of‚ some of the common minerals found in Igneous rocks are olivine‚ mica‚ feldspar‚ quartz‚ and pyoxenes. The most well known Igneous frock is Granite‚ which is also the most commonly used Igneous
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Introduction Metamorphism is defined as the mineralogical‚ chemical and structural adjustments in solid rocks to physical and chemical conditions which have been imposed due to changes in pressure and temperature or both. Metamorphism occurs below the surface zones of weathering and cementation. Conditions of metamorphism differ from the conditions under which the rocks in question were originally formed. Metamorphism produced as a result of the progressive increase in temperature and pressure‚
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1. What is the commonly accepted age of Earth? a. 4.6 million years b. 46 million years c. 4.6 billion years d. 46 billion years 2. Which of the following was not a source of heat for the early Earth? a. meteor bombardment b. gravitational contraction c. radioactivity d. hydrothermal energy 3. What are small asteroids called? a. comets b. meteoroids c. cratons d. microcontinents 4. What is the process by which a planet becomes
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Located in South Dakota on the south side of the Black Hills (“Wind Cave National Park”)‚ Wind Cave National Park protects two worlds- one underground and one aboveground‚ sunlit environment. This park showcases a variety of wildlife and is home to one of the world’s longest and oldest caves. The “mission of Wind Cave National Park is to reserve and protect the natural resources” it encompasses ("A Brief History of Wind Cave National Park"). In 1903‚ then President Theodore Roosevelt declared Wind
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Fe)2Si2O6) ; Single Chain Amphiboles – (W‚X‚ Al)7-8(Z4O11)2(OH)2 ; double chains Biotite mica – K(MgFe)3(AlSi3O10)(OH)2 ; Sheet silicates Muscovite mica – KAl2(AlSi3O10)(OH)2 ; Sheet Silicates Plagioclase feldspar – NaAlSi3O8 --- CaAl2Si2O8 (solid solution series) ; framework silicates Alkali Feldspars – KalSi3O8 –CaAl2Si2O8 (solid solution series); Framework silicates Quartz – SiO2 ; Framework Silicates W represents the large cations Ca‚ Na and K (That can substitute for one another) X Represents the
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Applications of Silicon Silicon is one of man’s most useful elements. In the form of sand and clay it is used to make concrete and brick; it is a useful refractory material for high-temperature work‚ and in the form of silicates it is used in making enamels‚ pottery‚ etc. Silica‚ as sand‚ is a principal ingredient of glass‚ one of the most inexpensive of materials with excellent mechanical‚ optical‚ thermal and electrical properties. Hyperpure silicon can be doped with boron‚ gallium‚ phosphorus
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Weathering- is a process where rocks are physically broken down or chemically modified by climatic or biological elements. Works through 3 processes: physical weathering‚ chemical weathering and biological weathering. Physical weathering- is the breaking down of rocks into smaller fragments brought about by physical (mechanical) forces. Works through 4 processes: alternate expansion and contraction‚ frost action‚ pressure release and salt crystal growth. Alternate expansion and contraction- this
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National Institute of Geological Sciences Laboratory in Principles of Geology Geology 11.1 Laboratory Manual Name: _____________________ Student #: ___________________ Section: ____________________ Copyright © 2003 National Institute of Geological Sciences. All rights reserved. National Institute of Geological Sciences Laboratory in Principles of Geology Representing the Surface of the Earth Objectives To be able to interpret the data represented on a map To be able to identify
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MINERALS 5 CHARACTERISTICS OF A MINERAL: 1)Naturally Occuring; 2) Be a colid; 3) Have an orderly crystalline structure; 4) have a definite chemical composition; 5) generally be inorganic Which are not classified as Minierals & Why: Gold‚ Water‚ Synthetic Diamonds‚ Ice & Wood: Gold-YES – naturally occurring; Synthetic Diamond: NO – Manmade; Water: NO – liquid state‚ only a solid material can be considered a mineral – in it’s naturally occurring ice state it is a solid and therefore a mineral;
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