 | | Report (issue) | | The Natural History Museum of Milan and its Madagascar Collection The Museo Civico di Storia Naturale... the museum began paleontologic fieldwork in Madagascar (upper Permian fauna and Jurassic and Cretaceous...fieldwork in Madagascar in 1996 in collaboration with other institu tions in Madagascar, Italy, and the...Pezzotta has spent a total of twenty nine months in Madagascar making geological-mineralogical surveys. In collaboration...watercolor by Valter Fogato Title Page Photos Quartz crystal with hematite from Mangatobangy, IO cm wide. A |  | | Book | | the structure, and of lore. Christian the crystal color. lan- signif- chemical optical properties...part is anywhere an beryl deposits, of fine crystal Sinkankas has in the literature, encyclopedic...80 Emerald and 140 Beryls, as Founda- Part II 86 87 Birthstones, Beryl in India, CHEMICAL AND...90 Emerald Lore in Colombia and Peru, 5. 93 Crystal Structure Chemical Composition of and Beryl... Japan, 462 Switzerland, 510 Tanzania 463 Madagascar (Malagasy Republic), Malawi Nepal, 482 513 |  | | Journal (article/letter/editorial) | | and decorative stones--chalcedony,quartz and rock crystal,serpentine, obsidian,pyrite,jasper,steatite...less intelligent Andaman Islander, did some hard rock mining. Indeedthe Egyptianscarried on extensiveoperationsat...Cheilcan and Acheulean at Salamanca, Spain, (Rock Crystal: Solutrean, Spain: also Swiss Lake Dwellers:...to 3,4oo B.C.): Mesopotamia (3,2oo B.C.). Indus Valley (3,3oo-2,7oo s.c.). AMBER. Aurignacian (Wildscheuer...pre-dynastic: dolmens of Brittany and Denmark: Indus Valley, 3,3oo-2,7oo B.C. CARNELIAN. Pre-Sumerian: also |  | | Catalog/List | | invited. ABBREVIATIONS used in this catalog xl -crystal xlled -crystalled xlline - crystalline xllized...············································ 28 ROCK AND MINERAL COLLECTIONS······················-·...Black glassy crystals imbedded in camptonite dike rock .................. . TREMOLITE Calcium magnesium...Mountains, Marysvale ~ink crystalline mass, same crystal vugs .... AMBL YGONITE Sodium lithium aluminum... Arassuahy Transparent brown-green pleochroic crystal prisms ¼"to ½" $. 25 each 5/$1. 00 ....... Czechoslovakia |  | | Journal (issue) | | Simon COVER STORY: GOLD from the Mother Lode District of California. This precious ore is the state...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...been found); and various localities in Quebec. Madagascar is also a principal producer of phlogopite for...rare. Found as crystal crusts in pegmatite veins at Maharitra, on Mt. Bity, Madagascar. BRAMMALLITE, the |  | | 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...plates) but also in crystal form, e.g. the many crystal forms of calcite. 7 a i ■ I II I g 1 I I3 |  | | Report (issue) | | Coke a11d J3y-Prod ucts: " Part I ... . .. ... Part. II . ,. . .. : .. Part III .. , - . .. ... Cobalt ....•a rt I. United Kingdom . . . ... . .. (1922) Part II. Britisl1 Africa . .. . ,. . .. (1922) Par~ III....••• ••• ... ... • •• French \Vest Africa Madagascar • •• • • •• 96 • •• ••• • •• 97 ••• ...disposition of minute tubes or cavities within the crystal. Among such may be mentioned star rubies and star...varies somewhat in different directions in the crystal, bein,g greatest in tl1e ,d irections parallel |  | | Book | | Rubellite Nephrite Thetis Hair Stone 187 Rock Crystal 235 235 210 210 211 211 212 Sunstone 212...Garland, J. Amster of the Compagnie Générale de Madagascar, J. Sirakian of the Taillerie de Royat, and S...avoided the need for costly excavation of hard rock; only simple, inexpensive processes that separated...adornment in a broader sense: a bud on a plant, a crystal in a metal vein, a precious stone worn by someone...contributed to the myth of ore regeneration and thus crystal regeneration. Ulpian (A.0. 170—228) wrote about | | | 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...colour (see plates) but also in crystal form, e.g. the many crystal forms of calcite. Perfect models |  | | Catalog/List | | Micromount and Fluorescent columns. PETROLOGIC (ROCK) SPECIMENS .... MINERAL DETERMINATION SUPPLIES including...PHOTOGRAPH: 67 69 70 l\ilICROMOUNT SUPPLIES . xl - crystal xlled - crystalled xlline - crystalline xllized...ATLASES ...... . 79 Sharp hexagonal barrel-shaped crystal druse. Many oi the crystals exhibit a cavernous...mina Ojuela. White-to-pale yellow sheave-like crystal groups on limonite . .. . .. ... .. ... . lVlexico...1: �:;�\}/\_\-�-�/ - ., . ..- . . ': • ,, ' II � .. # - � • • I -·. • •• HORNBLENDE (Amphibole) |  | | 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 | | -~~1---------- 1960-2015 by Thom.as P. Moore Volume II I-Z Published by the Mineralogical Record, Inc....vugs of crystalline talc. Easily the best extant crystal, a doubly terminated floater found in a talc vug...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...Shelley Lambert extracted excellent loose ilmenite crystal clusters from a calcite vein-dike digging site...Chamberlain, 1982; Joyce, 2006a). Some of the ilmenite crystal faces are partly overgrown by a brown coating which |  | | Book (edition) | | formula, allegiance to a mineral group, symmetry and crystal structure as well as the strongest X-ray powder...and opaque minerals. More attention is paid to crystal habit or aggregate development and their sizes...species must contain chemical formula, structure (crystal system, space group, and unit cell dimensions)...units (A), expressed differently according to the crystal system: only a for the cubic system, a,c for the...specifying the orientation of the crystal faces in relation to the crystal axes, a set of three or four numbers | | | 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- |  | | Book | | formulae. General properties. Here the mineral’s crystal system—the basic arrangement of its atoms—is specified...ALLOYS Silver Ag Silver is a member of the cubic crystal system but crystals are rare, the mineral occurring...Above: Copper from Lake Superior. Michigan. This crystal shows the enlarged faces of the rhombic dodecahedron...distri¬ buted in igneous, sedimentary and metamorphic rock, and in sea water. Auriferous quartz is a major...it may sometimes occur as large fluid masses in rock cavities, usually in regions of volcanic activity |  | | Journal (issue) | | the subject- here we will explore the various crystal shapes and learn about them in more detail. You...an kle-deep in water, miners drill holes in the rock at Taxco silver mine in Mexico. Right: North Sea...resources include coal, copper, tin and zinc. Madagascar has mineral deposits that contain chromite, graphite...which are mined in large quantities from kimberlite rock. In addition, there are vast deposits of anrimony...They tend to be brightly coloured and have fine crystal shapes. Many are used in industry as insecticides |  | | Book (edition) | | Mineralogy-Dictionaries. I. Rapp, George Robert, 1931joint author. II. Weber, Juµus, joint author. III. Title. 1 QE355...work now being published in phase equilibria and crystal-structure analyses, the work on syste1natic optical...of the properties. Chemical Formula: Until the crystal structure is known or at least until an accurate...with simple Miller indices) that are potential crystal faces or, when the bonds across the plane are few...representing crystal planes: ( ) Miller indices included in parentheses denote a single crystal plane. { |  | | Book (edition) | | well as 104 black-and-white photographs • 45 new crystal drawings of rare species • the most complete coverage...all entries include the mineral's formula, its crystal system, locality, and physical property data, as...Mineralogy-Dictionaries. l. Campbell, Thomas J. III. Title. II. Rapp, George Robert, 1930QE355.R6 1990 89-5633 549'...sizes: "xl" refers to the size of the largest crystal, "sph" refers to the diameter of the largest spherical...undergraduate student with a source for mineral formulas, crystal systems, and locality data. It will also provide | | | Book (edition) | | well as 104 black-and-white photographs 45 new crystal drawings of rare species the most complete now...all entries include the mineral’s formula, its crystal system, locality, and physical property data, as...cm. ISBN 0-442-27681-8 1. Mineralogy—Dictionaries. II. Rapp, George Robert, 1930QE355.R6 1990 549’ .03’21—dc19...sizes: ‘‘xl’’ refers to the size of the largest crystal, ‘“‘sph’’ refers to the diameter of the largest...undergraduate student with a source for mineral formulas, crystal systems, and locality data. It will also provide |  | | Journal (volume) | | precipitated. These fluids often seep into cracks in crystal rocks such as marble, so that veins of minerals...by pyrite. FACT FILE PYRITE Group: Sulphides Crystal system: Cubic Habit: Cubes, pyritohedra, octahedra...titanium or manganese that are present within the crystal structure of the mineral. This rose-coloured variety...brittle. FACT FILE ROSE QUARTZ Group: Oxides Crystal system: Trigonal Chemical formula: Si0 2 Hardness:...impurities of titanium or manganese contained in the crystal structure. If there were no impurities, the quartz |  | | Book (edition) | | edition, entirely rewritten. With Appendices I and II, completing the work to 1909. 1333 pages, 6f by 10...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...71 Mathematical Relations of the Isometric System II. TETRAGONAL SYSTEM 1. Normal Class (6). Zircon Type...AGGREGATES PART II. PHYSICAL MINERALOGY PHYSICAL CHARACTERS OF MINERALS I. II. III. 185 Characters |  | 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) | | Mineralogy. I. Dana, Edward Salisbury, 1849-1935. II. Gaines, Richard V. III. Dana, James Dwight, 1818-1895...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...first volume was nearly complete. However, World War II interrupted publication, so that the first volume...silicates) started in 1942, was interrupted by World War II, and was completed in 1951. Harry Berman (1902-1944) |  | | Book | | complex anion to Above: The atomic pattern of a crystal of the metal ruthenium. This photograph, made with...ice crystals. The detailed shape of every ice crystal differs from that of all others, but all show a...organized into crystals. Glassy rocks (remember that a rock is a mixture of minerals) are not uncommon as rapidly...maskelynite, which is formed when a meteorite strikes a crystal of the common mineral plagioclase, shaking its...of course ill-defined. Coordination polyhedra A crystal may be likened to a brick wall, in which a large |  | | Book | | Mine1 1 2 3 4 5 6 7 8 11 I Native elements II Sulphides Ill Halogenures and Halides • IV Oxides...periodically follow and repeat one another within the crystal structure. 'Solid' in so far as it has its own...normal temperature, are non-solid minerals. Fig I Crystal structure of sodium chloride Q=Na • •Cl ' Inorganic':...considered a rock: its spread and relative heterogeneity cause it to be caJled 'simple rock'. The limestones...limestones of the Alp:i Apuanc (Tuscany, ItaJy) or the rock-salt of Galicia (Poland) are such simple rocks. | | | Book | | complex anion to Above: The atomic pattern of a crystal of the metal ruthenium. This photograph, made with...crystals. Three ice The detailed shape of every ice crystal differs from that of all others, but all show...organized into crystals. Glassy rocks (remember that a rock is a mixture of minerals) are not uncommon products...nite, which is formed when a meteorite strikes a crystal of the common mineral plagioclase, shaking its...course ill-defined. Coordination polyhedra A crystal may be likened to a brick wall, in which a large |
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