Micro minerals ppt

heavy minerals ppt and minerals ppt presentation and ppt minerals and energy resources
Prof.EvanBaros Profile Pic
Prof.EvanBaros,United Kingdom,Teacher
Published Date:26-07-2017
Your Website URL(Optional)
Comment
Minerals Minerals are the building bloc ks of rocks. Minerals record the formati on and history of a rock and determ ine it’s physical and chemical characteristic s 1Each mineral is characterized by: -A specific composition -A specific crystal structure -A specific stability range (Pressure und Temperature) Minerale - Bausteine eines Gesteins 2Diamond Graphite Diamond is pure carbon C, as is graphite Courtesy of the U. S. Geological Survey. Photograph in the public domain. Courtesy of the U. S. Geological Survey and the Mineral Information Institute. Photograph in the public domain. Diamond has a dense, cubic structure Graphite has a hexagonal structure Minerale - Bausteine eines Gesteins 3 There are thousands of minerals. ... They are separated into groups based on their: 1. Crystal structure 2. Chemistry SiO , NaCl, Au, K Al Si O (OH) … 2 2 6 6 20 4 Minerale - Bausteine eines Gesteins 41. Crystal -structure Calcite © source unknown. All ri ghts reserved. This content is excluded from our Creative C ommons license. Fo r more information, see http://ocw.mit.edu/help/faq-fair-use/. The geometry of the crystal lattice constrains the form of the crystal © Fundamental Photographs - The Art of Science. All rights reserved. This content is excluded from our Creative Commons license. For more information, see http://ocw.mit.edu/help/faq-fair-use/. 5Covalent bonds Some minerals are made up of co valent bonds characterized by shared electrons between different atoms. Diamond is a good example. Courtesy of the U. S. Geological Survey. Photograph in the public domain. Minerale - Bausteine eines Gesteins 6Covalent bonds Covalent bonds A carbon atom in Diamond shares each one of its four valence electrons with one of its four neighboring carbon atoms and thereby reaches a stable configuration of 8 valence electrons on the L-shell, even while each atom has only 4 electrons. © source unknown. All ri ghts reserved. This content is excluded f rom our Creative C ommons license. Fo r more information, see http://ocw.mit.edu/help/faq-fair-use/. 7Ionic bonding Most minerals, however, are composed of ionic bonds, in which cations and anions attract each other. A simple example is Halite. Courtesy of Chris Ralph. Photograph in the public domain. © source unknown. All ri ghts reserved. This content is excluded from our Creative C ommons license. Fo r more information, see Halite http://ocw.mit.edu/help/faq-fair-use/. NaCl is “Tablesalt” composed - Bausteine eines Gesteins _ + Minerale of Na and Cl Ions. 8Ionic bonds Unstable Cation larger than the space: Anions are pushed apart Most stable Cation fits perfectly in the space Stable Cation smaller than the space Anions are touching © source unknown. All ri ghts reserved. This content is Minerale - Bausteine eines Gesteins excluded f rom our Creative C ommons license. Fo r more information, see http://ocw.mit.edu/help/faq-fair-use/. 92. Composition Halite Diamond Sodium Chloride, NaCl C Courtesy of Chris Ralph. Photograph Courtesy of the U. S. Geological Survey. in the public domain. Photograph in the public domain. Both have the same Structure, But a different composition (and bonding...) … and a different value Minerale - Bausteine eines Gesteins 10Systematic Mineralogy: Separation of Minerals in Groups Minerale - Bausteine eines Gesteins 11Silicates Silicates are the most comon & important rock forming minerals on Earth Silicates are composed of a combination of SiO Tetrahedrons 4 and Cations: + + 2+ 2+ 2+ 3+ K , Na , Ca , Mg , Fe or Al Minerale - Bausteine eines Gesteins 12The principal building block of rock forming minerals The SiO Tetrahedrons 4 Silicates are the most important rock forming minerals. They are composed of a very stable molecule made up of Silicon and Oxygen atoms. Those form through covalent bonds a SiO 4 tetrahedron. These tetrahedra can be combined in multiple ways. For example, they can be arranged by sharing an oxygen atom or through adding different cations. © source unknown. All ri ghts reserved. This content is excluded f rom our Creative C ommons license. Fo r more information, see http://ocw.mit.edu/help/faq-fair-use/. Minerale - Bausteine eines Gesteins 13Structure of silicate minerals 4- Neso-silicate SiO Soro-silicate 4 cyclo-silicate 6- Si O 2 7 Inosilicates Phyllo-silicate Tecto-silicate x- Single Chain-silicate Al Si O x y 2(x+y) Double chain-silicates © source unknown. All ri ghts reserved. This content is excluded from our Creative Commons license. Fo r more information, see http://ocw.mit.edu/help/faq-fair-use/. 14Tecto-silicate Quartz SiO 2 Quartz is one of the most common minerals. Despite that, it is consider semi- © source unknown. All ri ghts reserved. This content is precious based on its color excluded f rom our Creative C ommons license. Fo r more information, see http://ocw.mit.edu/help/faq-fair-use/. and shapes. © source unknown. All ri ghts reserved. This content is excluded f rom our Creative C ommons license. Fo r more information, see http://ocw.mit.edu/help/faq-fair-use/. Quartz frequently forms hexagonal prisms and pyramids. It is the hardest of the most common minerals. Minerale - Bausteine eines Gesteins Courtesy of the Brown Family © source unknown. All ri ghts reserved. This content is on flickr. License: CC -BY. excluded f rom our Creative C ommons license. Fo r more 15 information, see http://ocw.mit.edu/help/faq-fair-use/. 15Tecto-silicate Forms of Silica Silica (SiO ) most 2 Quartz commonly occurs as quartz. It can however occur in microcrystaline variaties Flint, Chert and Agate forms, which form from low T fluids. Agate Flint Minerale - Bausteine eines Gesteins © source unknown. All ri ghts reserved. This content is excluded from our Creative Commons license. Fo r more information, see http://ocw.mit.edu/help/faq-fair-use/. 16Tecto-silicate Feldspars Alkali-feldspar (or Orthoclase) Plagioclase + + + 2+ (K and Na bearing) (Na und Ca bearing) Feldspars are Tectosilicates in which the SiO tetrahedron is 4 + + combined with K , Na , 2+ 3+ Ca and Al . Minerale - Bausteine eines Gesteins Amazonite is semi-precious © source unknown. All ri ghts reserved. This content is excluded from our Creative Commons license. Fo r more information, see http://ocw.mit.edu/help/faq-fair-use/. 17Tecto-silicate Feldspar group Feldspars are Tectosilicates in which the SiO 4 tetrtahedron is + combined with K , + 2+ Na , Ca and 3+ Al . Minerale - Bausteine eines Gesteins © source unknown. All ri ghts reserved. This content is excluded from our Creative Commons license. Fo r more information, see http://ocw.mit.edu/help/faq-fair-use/.18Phyllo-silicates Mica, as clay minerals, are sheet silicates in which SiO 4 tetrahedron layers are + 2+ combined with K , Mg , _ 2+, 3+ Fe Al and OH . Courtesy of RonIJJ on flickr. L icense: CC -BY. Muscovite + 3+ (K and Al bearing) © source unknown. All ri ghts reserved. This content is “cleavage” excluded f rom our Creative C ommons license. Fo r more information, see http://ocw.mit.edu/help/faq-fair-use/. Biotite Minerale - Bausteine eines G + 2+ 2+ (K , Fe and Mg bearing) esteins 19Ino-silicate single-chain silicate double-chain silicate © source unknown. All ri ghts reserved. This content is excluded from our Creative Commons license. Fo r more information, see http://ocw.mit.edu/help/faq-fair-use/. Minerale - Bausteine eines Gesteins 20

Advise: Why You Wasting Money in Costly SEO Tools, Use World's Best Free SEO Tool Ubersuggest.