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In the (Mg, Fe)-olivines there is complete solid solution between Mg 2 SiO 4 (forsterite) and Fe 2 SiO 4 (fayalite); similarly the (Fe, Mn)-olivines form a continuous series. 0000001914 00000 n
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Most olivine found at Earth’s floor is in dark-colored igneous rocks. 13 0 obj
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Als Olivingruppe (kurz: der Olivin) wird eine Gruppe von Mineralen ähnlicher Zusammensetzung aus der Mineralklasse der Silikate und Germanate bezeichnet. 0000204039 00000 n
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The members of the olivine group crystallize with orthorhombic symmetry, the structures consisting of independent SiO 4 tetrahedra linked by divalent cations in six-fold coordination. Olivine has a totally high crystallization temperature as compared to other minerals. . 0000003680 00000 n
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Raman spectroscopic study of olivine-group minerals 103 Forsterite-fayalite series The relationships between the Mg#[= Mg/(Mg + Fe2+)] value and the Raman frequency shifts of olivine have been discussed by Guyot et al. 0000005538 00000 n
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The second member of the group was named tephroite in 1823 by Johann Friedrich August Breithaupt. Minerals explained 50 Olivine Group R.J. King Tewkesbury, Gloucestershire, UK Members of the olivine group are essentially rock-forming minerals characterized by the presence of magnesium (Mg) in rocks poor in silica, or by iron (Fe) in rocks that are silica rich. /Name /im1
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These varieties of rocks are maximum not unusual at divergent plate limitations and at hot spots within the centers of tectonic plates. %PDF-1.2
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It usually crystallizes inside the presence of plagioclase and pyroxene to form gabbro or basalt. 0000007752 00000 n
Definitionsgemäß gehören dieser Gruppe Inselsilikate mit der allgemeinen Zusammensetzung A22+[SiO4] an, wobei A als Platzhalter für die chemischen Elemente Blei, Calcium, Cobalt, Eisen, Magnesium, Mangan und Nickel dient. (2004), and Kuebler et al. Title: 09Olivine Author: SMYTH.JOE Created Date: 3/6/2002 8:52:58 AM /Filter /FlateDecode
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During the slow cooling of a magma, crystals of olivine may … 0000002902 00000 n
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��+�RI$�I$�_����+�RI$�I$�_����+�RI$�I$�_����+�RI$�I$�_����+�RI$�I$�_����+�RI$�I$�_����+�RI$�I$�_����+�RI$�I$�_����+�RI$�I$�_����+�RI$�I$�_����+�RI$�I$�_����+�RI$�IE�els��ִ�x (�쭎{�ւ\O ����{�Z�K�� ������^���u��m�mm��l�j�]�W��y�n���������͑�`�O����{/3-�S}�R=�����. Minerals of the olivine group are abundant in the earth, the moon, and the stony meteorites. 0000204250 00000 n
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Hemy C. Salmon in … Chrysolite was renamed, olivine, in 1789 by Abraham Gottlieb Werner for the usual olive green color of this mineral (N.B. 0000007978 00000 n
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It is generally accepted that the Mg‐rich olivines are drawn from the upper reaches of the Upper Mantle at depths from the surface of approximately 550 km. 399 55
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chrysolite has a similar etymology.) 0000203060 00000 n
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(1986), Wang et al. That makes it one of the first minerals to crystallize from a magma. 0000017028 00000 n
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Members of the olivine group are essentially rock‐forming minerals characterized by the presence of magnesium (Mg) in rocks poor in silica, or by iron (Fe) in rocks that are silica rich.