 | | 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 | | | 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...colour (see plates) but also in crystal form, e.g. the many crystal forms of calcite. 7 Perfect models |  | | 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 | | 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. 7 a i â I II |  | | Book (volume) | | the Prismatic Copper-Glance mines of Kupfer- district of Siegen, in the berg and Rudelstadt in Silesia...rarely, it is found along with hexahedral Gold. The rock adjoining the veins is often impregnated with it...impalpable. : OBSERVATIONS. possible that the crystal represented in Fig. 35. not a simple one, but compound...that indicated above by approximation == 125. H. crystal. M = ORDER 23 PBISMATOIDAL ANTIMONY-GLANCE...2-0 ... 2-5, Sp. Streak un- = 6-269, Gr. a crystal from Przibram. Compound Varieties. Twin-crystals |  | | Book (volume) | | Genus I. Rock-Salt. 1. Hexahedral Rock -Salt. 1st Subsp . Rock - Salt. 1st Kind, Foliated Rock -Salt,... Fibrous Rock -Salt, Lake -Salt, 2 2d 2d Genus II. SAL AMMONIAC. 1. Octahedral Sal Ammoniac, 1st...Epsom - Salt, Genus V. ALUM. 1. Octahedral Alum, âą Rock - Butter, 27 30 Genus VI . GLAUBER-SALT. 1. Prismatic...I. Rock - Salt . 1 1. Hexahedral Rock - Salt. 1st Subsp . Rock - Salt. 1st Kind, Foliated Rock - Salt...Salt, 2d Fibrous Rock -Salt, Lake -Salt, 2d Genus II. SAL AMMONIAC. 1. Octahedral Sal Ammoniac, 1st |  | | Book | | formulae. General properties. Here the mineralâs crystal systemâthe basic arrangement of its atomsâis specified...ALLOYS Silver Ag Silver is a member of the cubic crystal system but crystals are rare, the mineral occurring...sometimes as fine, large speciÂŹ mens; at Freiberg, E. Germany; Pribram, Czechoslovakia; Broken Hill, New South...Above: Copper from Lake Superior. Michigan. This crystal shows the enlarged faces of the rhombic dodecahedron...distriÂŹ buted in igneous, sedimentary and metamorphic rock, and in sea water. Auriferous quartz is a major |  | | Book (edition) | | Mexico (#2, column 1) and TENNANTITE, Dresser quarry, Walton, Nova Scotia, Canada (13, column 2). ...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. { |  | 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,...Fritz: Bergakademie Freiberg, Freiberg, Saxony, Germany. Donald B. Hoover: U.S.G.S., Federal Center, Lakewood...Institut fur Mineralogie, Ruhr Universitat Bochum, Germany. Duane Mellor: Geology Library, Yale University |  | | Book (edition) | | well as 104 black-and-white photographs 45 new crystal drawings of rare species the most complete now...all entries include the mineralâs formula, its crystal system, locality, and physical property data, as...sizes: ââxlââ refers to the size of the largest crystal, âââsphââ refers to the diameter of the largest...undergraduate student with a source for mineral formulas, crystal systems, and locality data. It will also provide...propertie an accuuntil least at or known is structure crystal Chemical Formula: Until the more present may formula | | | Book (edition) | | well as 104 black-and-white photographs âą 45 new crystal drawings of rare species âą the most complete coverage...all entries include the mineral's formula, its crystal system, locality, and physical property data, as...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...of the properties. Chemical Formula: Until the crystal structure is known or at least until an accurate |  | | Book (volume) | | ciliated, dentiform ? amorphous, ramose, and crystalÂŹ lised. The surface of the grains is rough, and...exÂŹ tensive washings were carried on in that district, for the purpose of collecting this precious metal;...in clay-porphyry in Transylvania; in hornblende rock, along with auriferous iron-pyrites, in veins of...Schlangenberg, in veins that traÂŹ verse hornblende rock : auriferous pyrites is met with in quartz at Beresof...times also in membranes, and disseminated ; also crystalÂŹ lised in the following figures: B 4 1. Octahedron |  | | 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 | | MineralogicalRecord.com I IIMORIITE-(Y) EUROPE FRANCE Trimouns quarry, Luzenac, Ariege. Operated for talc since the beginning...beginning of the 20th century, the Trimouns quarry became well known to collectors around 1990 for the...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 | | | 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 |  | | Book | | Paola Noe Ebelin und Gerd Bucerius, Hamburg, Germany, and the Andrea Panozzo and Giancarlo Berti, ...from the President of the Federal Republic of Germany Horst Kohler 9 Directorâs Foreword Philippe de...Goldwork Introduction by Ulrike Weinhold 250 Rock-Crystal Works Introduction by Jutta Kappel Dresden...proclaim the significance treasures that make Germany worth a visit. Ă© id sar â~ a - D irectorâs...the Staatliche Kunstsammlungen Dres- Hamburg, Germany, and the Laurence Levine Charitable Fund, den |  | | Book | | SCIEN âą & 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 | | SCIENCE Ă© | 7 a a ee Topaz (p. 2) â 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 (edition) | | UNIVERSITY PRESS, CAMBRIDGE, N. ENGLAND. 1816. 0 DISTRICT OF MAINE. Be it remembered, that on the eighth...States of America, PARKER CLEAVELAND, of the said District hath deposited in this office the title of a book...and other prints." HENRY SEWALLS Clerk of the District { Court ofMaine. ΀ΠBENJAMIN VAUGHAN, LL. D... The ancients believed crystallized quartz (rock crystal) to be water, congealed by exposure to intense...signified ice. Hence the etymology of the word crystal. Now, as a beautiful regularity of form is one |  | | Journal (article/letter/editorial) | | Stibnite from Japan . . . . . . . B R ~ (A.). N A Crystal of Stibnihe from Japan . . . . . . . . . ....Richmond, Virginia . . . GFYOT(3f.). Description of a Crystal of Euclase . . . . . . CHAPPELL(L. N.). Variety...from Etna . . . . . . . . COHEN(R.). Labradorite Rock of the Coasts of Labrador . . . . DIEULAFAIT . Origin...HANKEL (W.). Thermo- and Actino-electricity of Rock Crystal LEMBERG (K.). Formation and Alteration of Silicates... . KLENZE. Digestibility of Cheese . . . . . HENNEBERG (W.). Feeding Sheep with Sugar . . . . . MEYER(F |  | | Book (edition) | | whole 19 recognised the truly from Etna to district the Phlegraean Fields, under which Typhon, as...its descent, until it becomes a motionless dark rock like sides millstone. 2 Strabo, however, made...geographer undoubtedly his obser- vation that the district around the Strait of Messina much from earthquakes...the risings, slips and other changes Achaia, district. causes which He of the earth, at various... 6. Lipari Islands of hard 3 i. iii. 10. rock Seneca s 'Natural Questions' an interesting observation |  | | Book (volume) | | Capitals of Europe', Schools of Modern Art in Germany. J. E. H. Julius Eggeling, Ph.D. Professor...12th and 13th centuries, with ditches hewn in the rock, and several medieval buildings. Of these the chief...on the terrace, beneath which are hollowed in the rock the oraÂŹ tory and hermitage of St Emilion, and adjoining...ft. below, by a series of steps cut in the soHd rock and known as the â Ladder.â The best boats in the...which"reduced his position almost to that of a â subject district.â The townsmen adopted the Reformation in 1524 |  | | Book (volume) | | River (Germany) (Not Subd Geog) UF Nab River (Germany) BT RiversâGermany Naab River Valley (Germany) UF...Naab Valley (Germany) BT ValleysâGermany Naab Valley (Germany) USE Naab River Valley (Germany) Naâami sheep...Gnosticism Naatas USE Navayats Nab River (Germany) USE Naab River (Germany) Naba, Jabal (Jordan) USE Nebo, Mount...Nahe River (Germany) BT RiversâGermany Nahe River Valley (Germany) UF Nahe Valley (Germany) BT ValleysâGermany...ValleysâGermany â In art UF Nahe River Valley (Germany) in art [Former heading] Nahe River Valley (Germany) |  | | Journal (volume) | | youthful abbe to adhere to his profession. army of Germany on a wretched horse, followed by a poor youth ...their less fixed principles, and reduced to rock-crystal, which is earth in its greatest Salts, pyrites...it as they would have done through a piece of crystal. The yellower and weaker rays of sun. the candle...schooner Supply, to the light-house on the North Maiden Rock a part of the stores only were landed, when the...the combs which scor- clear, like the purest crystal, that it is impossible to perceive them, except |  | | Book (volume) | | On the Staff of the Carl Zeiss Factory, Jena, Germany. P. A. K. Prince Peter Alexeivitch Kropotkin...only other artists who have risen to eminence. Germany.âA characteristically florid style is here cultivated...seamen and marines:â Obverse: Hope, standing on a rock in the sea, holding in her right hand an olive branch...formerly called aft-er St Boniface, the apostle of Germany, was once the richest in Friesland, and belonged...the east (Khorasan, Parthyaea) only by a narrow district (Choarene and Comisene), where human dwellings |
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