 | | Journal (article/letter/editorial) | | monoclinic structure occur, in alkaline minettes both microcline and orthoclase are present, and in alkaline microgranites...microgranites and mierosyenites only microcline occurs. It may be assmned that the main factors controlling...decrease of temperature below that of the orthoclase-microcline inversion and the presence of alkaline hydrothermal...the existence of transition members and by the occurrence of serveral rock types in one and the same dyke...ratio during differentiation corresponds to the occurrence o f phlogopite instead of biotite in minette |  | | Report (issue) | | Microcline KAlSi3 O8 c 2001 ° Mineral Data Publishing, ver sion 1.2 Crystal Data: Triclinic. Point...group; (Si,Al) is completely ordered in low microcline. Occurrence: Common in plutonic felsic rocks, as granites...Switzerland. On Mt. Greiner, Zillertal, Tirol, Austria. At Baveno, Piedmont, Italy. In the USA, at Amelia |  | | Book (edition) | | Cleavage Optics Spectral Inclusions Luminescence Occurrence Stone Sizes Comments XlX XIX XlX XX XX XX XXl...and occupy all the space available to them. At lower temperatures atoms stay in contact for a longer...do find zo nes of coarse grained olivine at the lower part of lava flows or large intrusive bodies. Gemstone...basic rocks. The conditions necessary for the occurrence of emerald, i.e. , the formation of beryl plus...deposits); demands of the market. A gemstone occurrence is a very rare and transient geologic feature |  | | Book (edition) | | and general physical characters, together with occurrence, associations, and uses, are included in this...oneee we eer 131 243 254 266 A care 270 OccURRENCE AND ASSOCIATION OF MINERALS..............-eececeee0--...of the crystal axes when properly extended. The lower dipyramid intersects the two horizontal axes at...at distances which, although greater than in the lower dipyramid, are still proportional to their unit...or the indices of a face of a trapezohedron. Occurrence of Isometric Forms of the HexocThe cube, octahedron |  | | Journal (article/letter/editorial) | | Serra da Estrela contain quartz, microperthitic microcline, pla&clase, biotite, some chiorite, muscovite...and small phenocrysts of oligoclase-albite and microcline. The plagioclase of matrix is albite. Sihimanite...(up to 4 X 4 mm). The feldspar phenotrysts are microcline and albite. The plagioclase of matrix is albite... Plagioclase crystals also occur included in microcline in the coarsegrained porphyritic granite; although...vary from Anr to Aa in all the granitic rocks. Microcline occurs as subhedral crystals with cross-hatch | | | Book (edition) | | and general physical characters, together with occurrence, associations, and uses, are included in this......................................... 270 OCCURRENCE Al\'D ASSOCIATION OF l\lV...of the crystal axes when properly extended. Tile lower dipytamid intersects the two horizontal axes at...at distances which, although greater than in the lower dipyramid, are still propor tional to their w:rit...or the indices of a face of a trapezohedron. Occurrence of Isometric Forms of the Hexoc tahedral Class |  | | Journal (article/letter/editorial) | | referred to as Mustio sink, Figs. 1 and 2). The occurrence of CTP's was predicted by Gorman et al. ( 1978... the Mustio dome formation is related to the occurrence o f a migmatized core, but whether this dome...core of the dome is migmatized and intruded by microcline granites (Fig. 4). The KOLJ belt has been interpreted...West Uusimaa complex. Note the extensive microcline occurrence south of the Mustio dome. (After Bleeker...pelites. This entire sequence is intruded by microcline granites and pegmatites, both as sills and dikes |  | | Report (issue) | | Director Professional Paper 209 THE AJO MINING DISTRICT ARIZONA BY JAMES GILLULY UNITED STATES GOVERNMENT...dikes ....................................... Occurrence .................................. Batamote plug...Minerals found in the Ajo mining district. ............. Features of occurrence .............................20. Geologic map and sections of the Ajo mining district.................................................water, CC»2, and sulfides... Metal production, Ajo district, Arizona............................... ..... |  | | Report (issue) | | GEORGETOWN QlJADRANGLE (TOGETHER 'VITH THE EMPIRE DISTRICT) COLORADo· BY JOSIAH E. SPURR AND GEORGE H..................... _. . . . . . 93 Origin of microcline. _.. _.. _. _............ _. _.. _. _.. 93 Secondary... Northeast-southwest mineral belt-Continued. Occurrence of ores in the mineral belt ...................Argentine to the Tenmile district .. : ............... . 104 Ores of the Tenmile 'district ....................Ores of the Leadville district ................... . 104 Ores of the Redcliff district ................. |  | | Book (edition) | | Charles Wiley first opened his small printing shop in lower Manhattan in 1807, it was a generation of boundless...INTRODUCTION TOROCKTYPES 574 Igneous Rocks 575 General Occurrence and Texture Chemical Composition 576 Classification...1998), such as the “post perovskite” phase of the lower mantle (see Chapter 5); (2) investigations of the...example of this is the role of mineral dust and the occurrence and severity of pulmonary diseases studied in...Geological Crystal chemistry Classification occurrence~__ (paragenesis) EN CHAPTER1 =INTRODUCTION |  | | Report (volume) | | ................... 182 INTRODOCTION-TIIE OCCURRENCE OF GRANITE IN MAINE. - By GEORGE OTIS SMITH...characteristic of this southern portion. The other occurrence of granite in eastern Maine is the belt extending...Maine. With these should be mentioned the granite occurrence in Aroostook County, about 12 miles west of Houlton...of the granite masses still remains. The present land surface, therefore, truncates the various granite...occurs in one of two crystal forms, orthoclase or microcline, or in both, which, however, can be distinguished |  | | Book (edition) | | Molyhdates 385 Silicates 389 371 6 . . . . OCCURRENCE AND ASSOCIATION OF MINERALS Rocks and Rock-Forming...in a garden has seen minerals in their natural occurrence. The rocks of the mountain, the sand on the beach...mineralogy are limited to materials of natural occurrence. Thus, steel, cement, plaster, and glass are...largest faces. This, in Fig. 13, is the \ ~! I \t'' lower dipyramid, and the parameters of i the face of this...at distances which, although greater than in the lower dipyramid, are still proportional to the unit lengths |  | | Book (edition) | | crystal classes is least cumbersome because the lower symmetry classes can be described as special cases...groups) and the interpretive aspects of their occurrence. Chapters 10 through 13 deal with the systematic...otherwise are like minerals in chemistry and occurrence are called mineraloids and fall in the domain...1945 Edward H. Kraus, University of Michigan occurrence and origin of minerals; crystallographic forms;...factories).’” A nationwide commitment to recycling will lower many of the above estimates. The location of mineable |  | | Book (edition) | | crysta l classes is least cu mbersome because the lower symmetry classes can be described as special cases...groups) and the interpretive aspects of thei r occurrence. Chapters 10 through 13 deal with the systematic...Mineralization 558 Igneous Rocks 558 General Occurrence and Texture 560 Chemical Composition 560 Classification...otherwise are like minerals in chemistry and occurrence are called mineraloids 8.nd fall in the domain...the optical properties of nonopaque minerals occurrence and origin of minerals; crystallographic forms; |  | | Book (edition) | | environmental aspects of sulfides and their common occurrence in vein systems. e Boxes 9.1, 9.2 and 10.1...natural and anthropogenic mineral dust and the occurrence of pulmonary diseases. Mineral science Environmental...that applies geologic research to the problems of land use and civil engineering. This includes reclaiming...species, and each has a distinctive Geological occurrence Classification (paragenesis) FIG. 1.2. Diagram...tetrahedra. Geologic Occurrence. A common synonymous term is paragenesis. Geologic occurrence refers to the |  | | Book (edition) | | Tectosilicates 397 405 423 446 356 Contents 6. OCCURRENCE AND ASSOCIATION OF MINERALS Rocks and Rock-forming...in a garden has seen minerals in their natural occurrence. The rocks of the mountain, the sand on the beach...to 2 Introduction I materials of natural occurrence. Thus, cement, plaster, and glass are not steel...faces. This, in Fig. 15, to three of is the lower dipyramid, and the parameters of the face of this...The upper dipyramid would greater than in the lower dipyramid, are It to intersections with the horizontal |  | | Book (edition) | | crystal classes is least cumbersome because the lower symmetry classes can be described as special cases...However, in is like minerals chemistry and occurrence are called mineraloids and fall in the domain...techniques; geochemistry 1947 nonopaque minerals occurrence and origin of minerals; Paul Niggli, Technische...atomic substitution; relation of crystal Vienna, Austria structure to paragenesis 1960 Thomas W. F...geologists. But a knowledge of the chemistry, occurrence, and physical properties of minerals is basic |  | | Book (edition) | | crystal classes is least cumbersorne because the lower sym- ••• VIII PREFACE metry classes can be...stability diagrams and, under the heading of Occurrence, petrologic terms such as facies and assemblage...otherwise are like rninerals in chemistry and occurrence are called rnineraloids and fal I in the domain...geologists. But a knowledge of the chemistry, occurrence, and physical properties of minerals is basic...characteri·ze crystalline materials represent a lower energy state than random patterns. Intuitively, |  | | Book (edition) | | dealing with mode of origin and localities of occurrence have been thoroughly revised. The genesis of...general description of the associa¬ tion and occurrence of the minerals which it contains is given. Statistics...general physical characters, together with their occurrence, associations, uses, etc., are included under...Arranged According to Elements .... 124 326 Occurrence and Association of Minerals Rocks and Rock-making...lines A-B and A-C, would be the more common in occurrence. Law of the Constancy of Interfacial Angles. |  | | Book | | Fracture: shell-like to smooth, brittle. MICROCLINE Luster: Hardness: vitreous. 6. Cleavage:... ZA aX Description of Minerals Actinolite Occurrence: Occurs generally in crystalline schists and...Remarks: A common rock-forming mineral. Albite Occurrence: Occurs in small crystals or, more often...used in the manufacture of ceramics. Analcite Occurrence: Occurs as free-growing crystals or in masses...the garnet, but its color, hardness, and its occurrence in lavas will serve in identifying this mineral |  | | Book (edition) | | localities but not at others, and an individual occurrence of an ore mineral might change with time from...Chapter 5, "The Genesis of Minerals," and the occurrence data given in the mineral descriptions in Chapters...by a, c, and {3. Two other net units shown, the lower one centered. Any parallelogram may serve as a net...n. The projection of the poles to faces of the lower half of a crystal will be outside the primitive...addition to its Miller indices-for example, m{11 O}. Lower case italic letters have usually been used, but |  | | Book | | summary of the essential optical constants and occurrence of "all" nonopaque mineral varieties. In view... Minerals WiLhout Complex Anions Very lin1ited occurrence, extre1ne hardness, crystal form, and extreme...index are distinctive. Garnet and spine! have n1uch lower indices of refraction and are usually highly colored...modern and ancient (consolidated conglomerates). OCCURRENCE. s Sulfur 5 ORTHORHOMBIC Sulfur contains...elongated fragments. OPTICAL ORfENTATION. Lin1ited occurrence, extreme relief and birefringence, and low hardness |  | | Journal (article/letter/editorial) | | and insoluble phosphates, 653. Abriachanite, occurrence and localities of, 288. Absorption-spectra of...higher members of, 1273. Acetoacetic acid, 1052. occurrence of, in: urine, 1120. Acetochloramide, trichlor-...compounds of, with nitric and acetic acid, 1162. -occurrence of, in plants, 885. presence of, in human saliva...preparation and Argentous oxide, 997. Aricine, fresh occurrence of, 317. derivatives, 860. Anthraquinone, alkylised...Battery, secondary, 135. Bay tree, California, occurrence of a new fat acid in the nut of, 118R. Beans |  | | Report (issue) | | deposition ____ General features ________________ Lower shale member. _ _ ___-__-__ Limestone member. _____________..._-----_-----_-------_---General character and distribution. Lower member. ________________ Middle member. ________________...________________ Relation to Jefferson (?) dolomite. _ Occurrence. __ _ -_____-__-______Lithologic character. ____________...____________<>_______ Humbug formation.... _ _____________ Occurrence and thickness___-___-_ Lithologic character....Continued. Morgan (?) formation--__-_--___---______ ' Occurrence and character.___________ Correlation and age |
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Microcline occurrence, Rastenfeld, Krems-Land District, Lower Austria, Austria