 | | Book | | essentials of crystallography, chemistry, and crystal structure. These provide a firm basis for discussion...crystallography at the beginning of the text, crystal systems and associated conventions and terminology...minerals in order to avoid those lamentable errors in crystal forms and colors which are instantly apparent to...slightly reduced, and a few enlarged, as the diamond crystal of Plate 1, depicted in both natural and greatly...exposed extensive sand and gravel banks. You will see inconspicuous boulders lying about, most of them |  | | Journal (issue) | | Mother Lode District of California. This precious ore is the state mineral of California. See R. V. Dietrich's...appreciated by the mineral enthusiast. This important rock-forming group includes many more species than most...colorless muscovite surrounding a black biotite crystal. Biotite occurs with muscovite as a more-or-less...the alkalies present. It is very rare. Found as crystal crusts in pegmatite veins at Maharitra, on Mt....Venetia, Italy and also from the Zillertal. Tyrol, Austria. chlorite schist. It is yellow, green, reddish-brown |  | | Book | | Mineral Formation External Form of Minerals Crystals Crystal Symmetry Appearance and Development of Crystals...Crystals Aggregates G rowth of Twin Crystals Crystal Faces Pseudo morphs Physical Properties of Minerals Specific... perfect lustre and the regularity of form of crystal have long had a particular charm for man. This...identification keys and books depict idealized crystal forms. In nature, however, such forms are very...not only in colour (see plates) but also in crystal form, e.g. the many crystal forms of calcite. 7 | | | Book | | Mineral Formation External Form of Minerals Crystals Crystal Symmetry Appearance and Development of Crystals...Crystals Aggregates Growth of Twin Crystals Crystal Faces Pseudomorphs Physical Properties of Minerals Specific... perfect lustre and the regularity of form of crystal have long had a particular charm for man. This...identification keys and books depict idealized crystal forms. In nature, however, such forms are very...not only in colour (see plates) but also in crystal form, e.g. the many crystal forms of calcite. Perfect | | | Book | | Mineral Formation External Form of Minerals Crystals Crystal Symmetry Appearance and Development of Crystals...Crystals Aggregates Growth of Twin Crystals Crystal Faces Pseudomorphs Physical Properties of Minerals Specific... perfect lustre and the regularity of form of crystal have long had a particular charm for man. This...identification keys and books depict idealized crystal forms. In nature, however, such forms are very...not only in colour (see plates) but also in crystal form, e.g. the many crystal forms of calcite. 7 |  | | Book | | This book provides a basic introduction to the crystal structure of minerals, as well as illustrations...ring (see page 69) Page 2: Cerussite “Light of the Desert” (see page 117) Page 3: Malachite (see page...page 120) Page 6: Mimetite (see page 139) Page 248: Quartz (amethyst variety), Erongo Mountains, Namibia...Canada * 10.5 x 10.5 x 65 cm Page 256: Labradorite (see page 171) I would like to dedicate this book to...pressures and temperatures. Immense quantities of rock and their constituent minerals are altered and destroyed | | | Book | | This book provides a basic introduction to the crystal structure of minerals, as well as illustrations...ring (see page 69) Page 2: Cerussite “Light of the Desert” (see page 117) Page 3: Malachite (see page...page 120) Page 6: Mimetite (see page 139) Page 248: Quartz (amethyst variety), Erongo Mountains, Namibia...Canada * 10.5 x 10.5 x 6.5 cm Page 256: Labradorite (see page 171) I would like to dedicate this book to...pressures and temperatures. Immense quantities of rock and their constituent minerals are altered and destroyed |  | | Journal (issue) | | practical conservation of mineral localities and unusual rock formations. Ever since its foundation in 1928, the..................... COLLECTOR'S KINKS. SPLITTING ROCK WITH THE AID OF HEAT. By James A . Taylor ........coloring of many of the specimens, their very fine crystal forms, nor even their generous size~ and prices-it...The Lincoln Tunnel really begins in It then enters rock tunnels which pass the Jersey Meadows, on the west...an aplitic pegmatite. This material makes up the rock underlying a large part of the Manhattan Plaza. |  | | Book (volume) | | oryctognostic species of Slate-spar, Anthracolite Chalk, Rock milk, and others, have been formed under the same...formed in part by a decomposition of hexahedral Rock-salt, by carbonate of lime. 3. It occurs in considerable...number of faces, solitary, and limited as in the crystal represented in Fig. 56. The 2. Na chemical...extend in several directions, while the rest of the crystal its original state so that the whole takes the...Glauber-salt is found in nature accompanying hexahedral Rock-salt and prismatic Epsom-salt, or as an efflorescence |  | | Journal (article/letter/editorial) | | type of amphibole and ttre nature of the parent-rock. Values are given for the volume of the unit cell...the type of amphibole and the nature of the parent-rock. When the density is known, it is possibleto calculate...material or analysis,it is clear that the CALCIFEROU S AM PH I BOLES 67 limit at 200 is substantially valid...some amphiboles may have special varieties of crystal-structure, just as chamositedifiers from the normal...analysis was made on isolated material, often parent-rock of an occurrence may have been separately described |  | | Book (volume) | | as high a the they charm: engraved, rock-crystal, of the angularity also were still and...attempted. had the then were was of ruins rock-crystal but quartz, the began at into the beads... of had but lenticular early Mycenaean rock-crystal, agate, dony, agate a 203 period, Mycenaean...and by wear. anvil being Pliny, is this (see to also for from is p. 52). “When little...can rosettes. as special Fig. 168. Twinned crystal of Diamond. markings: being and outline, |  | | Book | | purchased or traded. After introducing the main rock types this guide concentrates upon the places which...Proustite (East Germany) 7 Rocks We can define a rock as a large mineral body which may contain only one... Petrologists, who study rocks, recognize three rock classes and within each class a large number of...Basalt arises from a lava solidified into a black rock, containing no quartz but rich in the feldspar minerals...rocks as seams (known as dikes). When the intrusive rock forms masses parallel to the structure of the rocks |  | | Book | | which is not often in a visually appealing habit. CRYSTAL SYSTEM Crystals are made up of atoms or molecules...referred to as the crystal system adopted by that particular mineral. Each crystal system constrains the...crystals can adopt. Some crystal shapes can be characteristic of a crystal system such as the cube and...measurement to be diagnostic. Crystal systems are summarised below. Crystal System Unit cell shape Cubic...dodecahedral crysta ls; wiry, arborescent, massive Crystal system: cubic 14 NATIVE ELEMENTS Silver S | | | Book | | which is not often in a visually appealing habit. CRYSTAL SYSTEM Crystals are made up of atoms or molecules...referred to as the crystal system adopted by that particular mineral. Each crystal system constrains the...crystals can adopt. Some crystal shapes can be characteristic of a crystal system such as the cube and...measurement to be diagnostic. Crystal systems are summarised below. Crystal System Unit cell shape Cubic...dodecahedral crysta ls; wiry, arborescent, massive Crystal system: cubic 14 NATIVE ELEMENTS Silver S |  | | Book | | Descriptive Catalogue of the A. C. Ramsay, H. W. Rock Specimens in the Museum Bristow, H. Bauerman, and...simple or elementary form to which each particular crystal is capable of being ultimately reduced, has been...appear to be reflected from the : A interior of a crystal. when a milky or pearly reflection is displayed...four in number :— 2. Vitreous, or the lustre of Crystal (1.) is Splendent: when the surface of the...parallel with the faces or planes of the primary crystal. This may be effected by placing a knife or other |  | | Book | | SCIEN • & TECHNOLOGY Topaz (p . 2) - idiomorphic crystal (9 mm); Thomas Range (USA) Text by Rudolf Dud'a...properties 19 Specific gravity 19 Crystals and crystal system 20 Special optical properties 23 Luminescence...colour, transparency, lustre, cleavage, fracture, crystal morphology) are given. Secondly, other features...apparatus or special equipment (specific gravity, crystal form , n1agnetism, luminescence, radioactivity...where its application may result in the etching of crystal faces or whole specimens. Lastly, data on the genesis |  | | Book | | It ist the combination of a great variety of crystal forms, their properties of symmetry, their colors...on this planet, giving their chemical formula, crystal system, density, hardness, color and occurrence...Structure of Crystals Crystal Growth Physical Properties of Minerals The Cycle of Rock and Mineral Change...occur as ores. There is something enigmatic about crystal forms that has always appealed to man’s imagination...perhaps a combination of the great variety of crystal forms, their properties of symmetry, their colours |  | | | | stones. It is the combination of a great variety of crystal forms, their properties of symmetry, their colours...on this planet giving their chemical formula, crystal hardness, colour £2.00 COLLINS system, density...Structure of Crystals Crystal Growth Physical Properties of Minerals The Cycle of Rock and Mineral Change...occur as ores. There is something enigmatic about crystal forms that has always appealed to man’s-imagination...perhaps a combination of the great variety of crystal forms, their properties of symmetry, their colours |  | | Book | | stones. It is the combination of a great variety of crystal forms, their properties of symmetry, their colours...on this planet giving their chemical formula, crystal system, density, hardness, colour and occurrence...of Crystals 3. Crystal Growth 4. Physical Properties of Minerals 5. The Cycle of Rock and Mineral Change...occur as ores. There is something enigmatic about crystal forms that has always appealed to man's -imagination...perhaps a combination of the great variety of crystal forms, their properties of symmetry, their colours |  | | Book (edition) | | UPHAM SHEPARD, in the Clerk's office, of the District Court of Connecticut. CONTENTS . PART I , Page...sidered as an individual in the mineral kingdom . A crystal of quartz, iron -pyrites, or topaz, is an individual...inorganic kingdom , is called a simple mineral. A crystal of quartz, or a fragment of one, is therefore a...with regard to a crystal of diamond, or it may be composed of several, as in a crystal of beryl . An inorganic... 6 CRYSTAL LOGRAPHY. SECTION I. PROPERTIES OF SIMPLE MINERALS . CRYSTAL . The term crystal is applied |  | | Book | | SODA— Soda, Carbonate of Soda 34 Trona, Urao 34 Rock-Salt, Common Salt, Chloride of Sodium 34 Nitrate...treats of the simple minerals, Geognosy, of masses of rock presented as a whole, while Geology is occupied...the terminal planes, and form the sides of the crystal when it is viewed in an upright position. Those...in imagination so pass through the centre of a crystal, that its planes, edges, and angles, are grouped...alone. Another example is presented by a small crystal of anjr mineral which is so incrusted by, or imbedded |  | | Book (edition) | | assistance given him by Professor Edward S. Dana. Crystal Drawing given in Appendix table has been added...chapter on Crystallography, the different types of crystal forms are described under the now accepted thirty-two...HYDROCARBON COMPOUNDS APPENDIX ON THE DRAWING A. OF CRYSTAL FIGURES APPENDIX 649 B. TABLES TO BE USED IN...inorganic species called minerals, which together in rock masses or in isolated form make up the material...specific chemical formula, and is hence classed as a rock, not as a mineral species. Further, several substances | | | Book | | SCIENCE é | 7 a a ee Topaz (p. 2) — idiomorphic crystal (9 mm); Thomas Range (USA) Text by Rudolf Duda...properties 19 Specific gravity 19 Crystals and crystal system Special optical properties Luminescence...extent due to their aesthetic aspect (colour, crystal form, lustre, the ability to take a polish or to...fundamental crystallographic forms and typical crystal forms of some minerals have been included in the...colour, transparency, lustre, cleavage, fracture, crystal morphology) are given. Secondly, other fea- |  | | Journal (article/letter/editorial) | | The reliquary cross was found to be made of rock crystal and framed with an alloy of gold, silver and...Cracow; Poland; glass beads; reliquary cross; rock crystal; non-destructive methods Academic Editor: Domenico...obtained at the points numbered 1–3 see Table 1. points numbered 1–3 see Table 1. Table 1. Chemical composition...For the exact position of the analysed points, see Figure 4. Elements Elements C CO O Cl Cl Ag Ag...concluded that the cross was cut out of the quartz (rock crystal) randomly, not in accordance with its natural |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | on a knowledge of physical properties such as crystal morphology, color, luster, hardness, cleavage,...edition, all of the interfacial angles from the crystal elements were recalculated, the Miller-Bravais...Mineralogy, Natural History Museum, London, England. Rock H. Currier: Jewel Tunnel Imports, Baldwin Park,...Institut fur Mineralogie der Universitat Wien, Austria. Michael Zolensky: Lyndon Johnson Space Center...crystallographic data, including structure crystal crystal and powder diffraction results, the morphology |
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