glauconite optical properties

Found inside – Page 175... -Glass fibers -Optical properties Vitreous state Glass capacitors 0901 BT ... BT Eye diseases Luster RT Aminopterin Glauconite 0807 -Optical properties ... Found inside – Page 9OPTICAL PROPERTIES AND CHEMICAL COMPOSITION OF GLAUCONITE By HYRUM SCHNEIDER and THOMAS B. BRIGHTON Glauconite was first named in 1828 , but in spite of repeated studies and numerous analyses its exact manner ... Found insideGlauconite and celadonite in pigmentsare normally indistinguishable by optical microscopy (Grissom, 1986). However, it may be possible to differentiate them ... Found inside – Page 169Glauconite accounts for over 20 percent of sediment 1450 670 22 ° 36 ' N 107 ° 24 ' W ( Mexico ) 9th voyage of R / V ... Optical properties X - ray properties 243 2.84-2.90 n = 1.660-1.630 ( core ) n = 1.630-1.605 ( shell ) Hydromica 1M with ... Found inside – Page 48All true glauconites have been shown by Rossl2 ] to lie between the two ... S. , The optical properties and chemical composition of glauconite : U. S. Nat . Found inside – Page 1194Decrease in the age of glauconite may be caused by ionic exchange of potassium ascompanied by loss of argon ( 10 ... Their optical properties change , they lose their micro - aggregate structure ( over the entire grain or in the areas which ... Found inside – Page 1090Optical properties and chemical composition of glauconite ; by Clarence S. Ross . 1926. cover - title , 15 p . il . ( Proceedings , v . 69 , art . 2 ; no . Found inside – Page 5Optical Properties of Glauconite and Related Minerals Optical studies were carried out on a number of glauconites of variable chemical composition by Ross ( 1926 ) aud Hutton ( flutton and Seelye , 1941 ) . The ranges of refractive indices ... Found inside – Page 4ite from Woodstown , N. J. The optical properties of the glauconites studied are given in the following table : TABLE I. — Optical properties of glauconite Indices of refraction Optical Cleavage char001 acter 2 V 2 E a B 7 2 ° 0.022 .018 20 ° -23 ... Found inside – Page 48All true glauconites have been shown by Rossl2 / to lie between the two ... S. , The optical properties and chemical composition of glauconite : U. S. Nat . Found inside – Page 50... to be poorly crystallized and have only vaguely defined optical properties. ... Glauconite appears to be the most common such mineral throughout the ... Found inside – Page 38Values range from 2.58 for soft pale yellow or yellow - green foraminiferal fillings , to 2.84 for dark green glauconite . Optical Properties Crystallinity Examination of thin sections under the petrographic microscope reveals that the most common ... Found inside – Page 17Glauconite in Missouri . Optical properties and chemical composition of glauconite . Proc . U.S. Nat . Mus . , vol . 69 , No. 2628 , 1926 , 15 pp .; Chem . Found inside – Page 99Group Variability The optical and other properties of glauconite grains will vary according to mineralogical composition, degree of drying, ... Found inside – Page 267Leith states , “ The greenalite granules , believed to have constituted the bulk of the original Mesabi iron - bearing formation , are similar in physical and optical properties to glauconite or greensand , but differ in almost lacking potash . Found inside – Page 119Glauconite Pellets The glauconite pellets can be classified into four groups , each distinct in optical , morphological , and chemical properties . The rarest form of glauconite pellets ( only a few grains ) is light green to yellow green pleochroic ... Found inside – Page 267Leith states , “ The greenalite granules , believed to have constituted the bulk of the original Mesabi iron - bearing formation , are similar in physical and optical properties to glauconite or greensand , but differ in almost lacking potash . Found inside – Page 351NOTE : C . S . Ross , in “ The Optical Properties and Chemical Composition of Glauconite ” ( No . 2628 – Proceedings U . S . National Museum , Volume 69 , Minimum Article 2 ) lists analyses of seventeen glauconites , 13 . ZEOLITE PROCESS ... Found inside – Page 9OPTICAL PROPERTIES AND CHEMICAL COMPOSITION OF GLAUCONITE By HYRUM SCHNEIDER and THOMAS B. BRIGHTON Glauconite was first named in 1828 , but in spite of repeated studies and numerous analyses its exact manner ... Found inside – Page 17509-513 . Discusses the occurrence , character , and origin of glauconite from the Cretaceous of New sey . PREMIK , A. Fossils in the glauconite beds of Wielùn and Lipic , Galicia . ... Optical properties and chemical composition of glauconite . Found inside – Page 77Ross , C. S. The Optical Properties and Chemical Composition of Glauconite . Proc . U.S. Nat . Mus . , vol . 69 , no . 2628 , art . 2 , 1927 , pp . 1-15 . Found inside – Page 914... Taro ( linopuronenes 3648 Chemical composition and optical properties ... Irmo NE quadrangle : Glauconite Hatchell , W.0.1263 Potassium content and ... Found inside – Page 156Optical and Physical Characteristics Optical characteristics Glauconite often occurs in a fine - grained , cryptocrystalline form , where the individual ... Found inside – Page 267Leith states , “ The greenalite granules , believed to have constituted the bulk of the original Mesabi iron - bearing formation , are similar in physical and optical properties to glauconite or greensand , but differ in almost lacking potash . Found inside – Page 515amination it appears to be nothing but glauconite with admixed biotite ... examination of optical properties , and by relationships in sedimentary basins ... The purpose of this book is to serve the needs of students in learning the procedures and theory required to use the petrographic microscope. In the second edition the book has been updated and there has been a number of changes. Found inside – Page 64... formation , are similar in physical and optical properties to glauconite or greensand but differ in almost lacking potash . They have been called glauconite by Spurr , who argues that the absence of potash may be due to secondary alteration ... Found inside – Page 337In addition , for a control , glauconite was analyzed in grains selected under the binocular microscope . The results of the determinations agree . In order to determine the optical properties of the glauconite ( Vikulova , 1952 ) , a colloidal ... Found inside – Page 48All true glauconites have been shown by Rossl2 ] to lie between the two ... S. , The optical properties and chemical composition of glauconite : U. S. Nat . Found inside – Page 345These references are especially useful for distinguishing between glauconitic minerals and celadonite. Physical properties of celadonite Optical properties ... Found inside – Page 212When used in the morpho - logical sense , the term glauconite often refers to small , green , spherical , earthy pellets . Some of ... Glazes are classified and described by the following characteristics : surface - glossy or matte ; optical properties ... Volume 5A of this second edition of Rock-Forming Minerals focuses on oxides, hydroxides and sulphides. Since the publication of the first edition, in 1962, there has been an enormous increase in the literature devoted to these minerals. Found inside – Page 9OPTICAL PROPERTIES AND CHEMICAL COMPOSITION OF GLAUCONITE By HYRUM SCHNEIDER and THOMAS B. BRIGHTON Glauconite was first named in 1828 , but in spite of repeated studies and numerous analyses its exact manner ... Found inside – Page 48All true glauconites have been shown by Ross12 to lie between the two ond members 2 ... S. , The optical properties and chemical composition of glauconite ... Found inside – Page 267Leith states , “ The greenalite granules , believed to have constituted the bulk of the original Mesabi iron - bearing formation , are similar in physical and optical properties to glauconite or greensand , but differ in almost lacking potash . Found inside – Page 1364Glauconite should be , and is , one of the widely distributed minerals , for it forms from one of the most prominent of the rock - forming minerals , biotite ... Ross , C . S . : The optical properties and chemical composition of glauconite , U . S . Nat . Found inside – Page 4822.7-2.8 . Optical Properties . — Biaxial , plane of optic axes parallel to ( 100 ) . ... It also resembles brucite , which , however , is optically positive and uniaxial . GLAUCONITE . Silicate of iron and potassium with aluminium and water , in variable ... Found inside – Page 262Manghnani , M.H. and Hower , J. , 1964b , Glauconites : cation exchange capacities and infrared spectra . Part II . Infrared absorption ... Ross , C.S. , 1926 , The optical properties and chemical composition of glauconite . Proc . V.S. Natl . Mus . About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Found inside – Page 253An optical study of glauconite is difficult because It is mostly microcrystalline, and individual crystal anhedra large enough to be studied are decidedly rare. Optical properties cannot be determined from crystal assregat 93. By persistent and ... Found inside – Page 4ite from Woodstown , N . J . The optical properties of the glauconites studied are given in the following table : TABLE I . — Optical properties of glauconite Indices of refraction Optical Cleavage 2 V character y - a 2 E 001 330 200 300 500 20° ... Found inside – Page 453Optical Properties . - Biaxial , plane of optic axes parallel to ( 100 ) . The acute ... It also resembles brucite , which , however , is optically positive and uniaxial . GLAUCONITE . Silicate of iron and potassium with aluminium and water , in variable ... Found inside – Page 118CHEMICAL PROPERTIES : Formula C H , O2 , the compound known in organic CH CH C CÓ C CH CH . chemistry as anthraquinone , CH CH C CO C CH CH PHYSICAL AND OPTICAL PROPERTIES : Sp . gr . ... DIVISION : R ' :( R " ' ' , R " ) : S102 : H , 0 = 1 : 4 : 5 : x “ Soda - glauconite " A. F. HALLIMOND : Glauconite from the greensand near Lewes , Sussex ; the constitution of glauconite . Min . Mag . , in variable... found inside – Page 4822.7-2.8 parallel to ( )! 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