 | | Book | | Litchfield County, where good crystals were taken from quartz veins in a variety of metamorphic, plutonic and...Litchfield, where a mass of white quartz on a ridge had once been mined for quartz, and large ilmenite masses...ilmenite crystals to 7 .5 cm in matrix of massive quartz from these dumps-adding that, in his judgment,...flattened rhombohedrons (resembling those of Froland, Norway) to 12 cm across, some individuals weighing up...richterite (Menezes and Martins, 1984). EUROPE NORWAY Omdal, Froland, Aus~Agder. Thick-tabular to equant |  | | Book | | Patchwork Harlequin Peridot: Stone of the Heavens Quartz: Jack of All Trades Spinel: Herald of the Princely...rock-forming minerals, such as mica, feldspar, quartz, olivine, and others, were segregated out in orderly...silicate minerals were segregated and precipitation of quartz and feldspar took place. The great majority of...chiefly the varieties of the quartz group: amethyst, rock crystal, smoky quartz, and citrine, as well as...as precious tourmaline and also, in part, 18 g Quartz druse lined with violet amethyst terminations. |  | | Journal (issue) | | fabulous Roebling apatite, many amazonite and smokey quartz groups, Tsumeb, Ajo and Bisbee azurite, Tsumeb...varieties of crystalline and cryptocrystalline quartz in cluding agate, chalcedony, jasper, and amethyst...pecting, 1955. As an interesting sidelight, The Quartz Fam ily Minerals by Dake, Fleener and W ilson was...receive a lot of letters asking me where to go in Norway or Morocco...where they should stop to eat, to...thousands of specimens of dioptase, wulfenite, calcite, quartz, and fluorite, hundreds of fine azurites, tourmalines |  | | Book | | noted; the whetstone and the gems (i.e. those of the quartz family, cut into seals in his time largely) ...shred.” A few tain minerals, fluorspar and fetid quartz, under conditions, give rhine vessels that *...lustrious World the gems of Hannibal. became quartz powerful Western two and disposal most satisfying...enthusiastic collector of an fine the the and other quartz Caesar, passion, a as of use among available...Britain. own and poor Indeed, Rome’s as and quartz quality, forced to seek finer was his amount | | | Book | | noted; the whetstone and the gems (i.e. those of the quartz family, cut into seals in his time largely) ...shred.” A few tain minerals, fluorspar and fetid quartz, under conditions, give rhine vessels that *...lustrious World the gems of Hannibal. became quartz powerful Western two and disposal most satisfying...enthusiastic collector of an fine the the and other quartz Caesar, passion, a as of use among available...Britain. own and poor Indeed, Rome’s as and quartz quality, forced to seek finer was his amount |  | | Book | | New England, on the other hand, derive from hard quartz–rich formations; they are acidic and frequently...mainly of relatively large crystals of feldspar and quartz and containing many rare minerals. 2. After additional...Paleozoic mica schists, intruded by pegmatite and quartz veins. The contact between these formations is...This process, known as partial melting, caused quartz and feldspar grains to disintegrate. Their basic...period) formed after the melts cooled, and vertical quartz veins represent the injection of the somewhat younger |  | | Book (edition) | | The bright red areas are dominated by the mineral quartz, found in sandstone; green areas are limestone...is rich in the light-colored silicate minerals quartz and feldspar. Granite and related rocks are major...consists of durable grains of the glassy mineral quartz that once covered this region with mile after mile...of Beryl (blueish-green), Feldspar (white), and Quartz (clear). (Photo by Jeff Scovil 71 arth’s crust...through tooth enamel, or that the common mineral quartz is the source of silicon for computer chips. In |  | | Book (edition) | | Rocks of Special Interest inthe Park 460 . Great Smoky Mountains National Park Geologic Features 453...scope of this volume. National parks such as Great Smoky Mountains, Grand Canyon, Yellowstone, and Yosemite...Brahma Schist, which is a mixture of quartzite and a quartz mica schist. Together, the Vishnu Schist and the...trending northwest-southeast and northeast-southwest. Quartz veins, fed by hydrothermal (hot water) solutions...felsic gneisses containing appreciable amounts of quartz, feldspar, and micas. The Zoroaster Plutonic Complex |  | | Book | | reversal. THERMOLUMINESCENCE DATING Grains of quartz and feldspar on the surface of the Earth are exposed...6). Figure 2.6 a. Faults and folds. b. Folded quartz vein. c. Breccia. Puotos: Davip JOHNSON Rocks...Calcite Fluorite Apatite Orthoclase (feldspar) Quartz P W ABR OAONDOO Topaz 9 10 Corundum Diamond ...common oxide is quartz (silica, SiO2), which occurs in many forms, including clear quartz crystals, smoky...such as citrine and rose quartz, and in a less crystalline form as opal. Quartz is very hard and does not |  | | Book (edition) | | and Faults « Water Gaps and Wind Gaps 55. Great Smoky Mountains National Park 821 Geographic Settings...with poaching, such as killing the bears in Great Smoky Mountains National Park. Animals have also been...compacted and cemented, become sandstone. Finer quartz grains, clays, and muds may lithify (form rock)...Fine-textured 5 - Sandstone (graywacke, arkose) ~ Quartz grains; other mineral and rock particles of sand...dunes overspread vast plains. The abundance of quartz-rich sands that built the great Jurassic dune belts |  | | Book | | giving way to monochrome greys and the glinting of quartz. Ascending into the corrie felt like accessing...eighteenth century onwards and now few pieces of the smoky quartz remain. Evidence of the gem mines, however,...to make it wind proof. The ceiling was flat, a quartz-encrusted slab of pink unweathered granite standing...crystal deposits - the scatterings or seams of milky quartz disappearing beneath the surface-level of the plateau... Beinn a' Bhuird and Ben Avon. Likely veins of quartz were dug back into the soil, faults and ancient |  | | Book (edition) | | through tooth enamel or that the common mineral quartz is the 2.1 | MINERALS: source of silicon for...and describe each. FIGURE 2.1 Quartz Crystals Well-developed quartz crystals found near Hot Springs...mineral quartz has blocks (crystal). Granite (Rock) the formula SiO,, which indicates that quartz consists...silicon to oxygen is true for any sample of pure quartz, regardless of its origin. However, the compositions...in FIGURE 2.3, occur as aggreFeldspar Hornblende Quartz gates of several different minerals. The (Mineral) |  | | Book | | refers to a rock composed of visible crystals of quartz, feldspar, and several other minerals. In this...followed at lower temperatures by orthoclase and quartz. Bodies of granite are called plutons, a word that...defined, symmetrical patterns. Thus, the mineral quartz is composed of silicon and oxygen atoms that are...contrast, obsidian, which is chemically similar to quartz, is composed of randomly arranged atoms and is...minerals make up most of the granite in the park: quartz, orthoclase, plagioclase, biotite, and hornblende |  | | Book | | rock-forming processes . Describe Lhe history of a quartz grain from the time of its formation in a granite...as well as being detached from the igneous rock. Quartz is the most resistant of the igneous rock minerals...Rocks it occurs ,n Weathering characteristics Quartz Sandstones, granites, many metamorphic rocks ...sandstones (arkoses, greywackes) Almost as hard as quartz, but marked cleavage allowing water penetration...Potassium feldspar ~ Solutes Sodic feldspar Granite Quartz - Clay minerals - - - - - - - - Sand Mica Olivine |  | | Book (edition) | | explain why not. a. gold nugget b, seawater c. quartz seomanescesnuyyy d. cubic zirconia e. obsidian...three days after Hurricane Ike came ashore. At landfall the storm had sustained winds of 165 kilometers...minerals FIGURE 2.1 Collection of well-developed quartz crystals found near Hot Springs, Arkansas. (Photo...example, the common mineral quartz has the formula SiO), which indicates that quartz consists of silicon (Si)...silicon to oxygen is true for any sample of pure quartz, regardless of its origin. However, the compositions |  | | Journal (volume) | | like that, filled with small angular pieces of quartz. It had two handles, each 24 inches wide by 3 inches...and therefore all the difficultye is in a good landfall, for the seas are but the high waye which shippes...rock , containing nodules of a peculiar glassy quartz. It is fully described under the name Trelissickite...GOLD . - Large piece with embedded fragments of Quartz. Loc., Carnon stream works. Three small irregular...presented by Mr. W. Dawe. 1030 Do. Foliated gold in Quartz. Loc., California . 1031 Do. Yellow foliated |  | | Book | | ..., , , ..... . ' ~ Volcanic vents Basalt & Quartz-porphyry 1 mile 1km Wester Hill ..... __ ✓...into the former vent (chiefly basalt, trachyte and quartz-porphyry). The Eildon Hills cannot be equalled...varying proportions of the constituent minerals of quartz, feldspar, and mica, biotite or hornblende, result...sense) is very acid, with a high percentage of quartz and a small proportion of biotite. The Criffel...Bengairn, however, it is issociated with a grey quartz-diorite which is very similar to granite. Although |  | | Book | | land may lie in their path or to die, if no such landfall is their lot. Although no one recorded the first...The greater part of most beach sand consists of quartz, the most abundant of all minerals, found in almost...heavier minerals may form patches overlying the pale quartz. So there may be a curious purple shading over...Sapelo Islands, clearly separated from the lighter quartz. In some parts of the world the sands represent...there is less magnetic material and less garnet. Smoky quartz predominates at Barnegat, glauconite at Monmouth |  | | Report (issue) | | yellow powdery molybdenum oxide mineral that coats quartz sand grains. The molybdenum deposits are confined...chert-cummingtonite or chert-grunerite, the second is in quartz veins, and the third in massive ferruginous chert...a few such folds have proved to be barren. Most quartz veins are barren, especially those in graywacke...vein quartz occurs in volcanic tuffs of the Middle Ordovician Ammonoosuc Volcanics. The quartz veins...gold, the quartz veins are also barren. D 'Agostino concludes that the auriferous vein quartz was deposited |  | | Book (edition) | | layers in search of oil or that the common mineral quartz is the main ingredient in glass. As the material... Some crystals such as those of the mineral quartz have a very distinctive crystal MATTER AND MINERALS...Slight impurities in the ple, give common mineral quartz, for exam- a variety of colors, including pink...black (see Figure 2.23). When a mineral, such as quartz, exhibits a variety of colors, it is coloration...may contain parallel lines called striations. B. Quartz sample Crystal form is that exhibits well-developed |  | | Book | | Ackerwiese f arable meadow Adamellit m adamellite (quartz-monzonite) Adamin m adamine, adamite, Zn,[OH |...Si2O10] Amethyst m amethyst (variety of crystalized quartz) amethystartig, amethystfarben amethystine, amethyst-coloured...coal smut, blossom of coal A. eines Quarzganges quartz boil submariner A. subcrop verdeckter A. subterranean...Auxiliarlobe m auxiliary lobe 36 Aventurin venturine quartz Baddeleyit m baddeleyite, ZrO, Badenit m badenite...glass Aventurinquarz m aventurine quartz (subvariety of quartz) aventurisieren to aventurize, to schillerize |  | | Book (edition) | | The bright red areas are dominated by the mineral quartz, found in sandstone; green areas are limestone...through tooth enamel, or that the common mineral quartz is the source of silicon for computer chips. As...known as Twenty Vv FIGURE 2.1 Mineral samples. A. Quartz; B. Olivine (variety Fosterite); C. Fluorite; D...water and 31 more elements. The common mineral quartz, for example, consists of two oxygen (O) atoms...most commer- cially produced glass is the mineral quartz (SiOz). Lesser amounts of the minerals calcite |  | | Book (edition) | | develop. Some crystals, such as those of the mineral quartz, have a very distinctive crystal form that can...property. Slight impurities in the common mineral quartz, for example, give it a variety of colors, including...white, and even black. When a mineral, such as quartz, exhibits a variety of colors, it is said to possess... Pyrite crystals. (Courtesy of JLM Visuals) B. Quartz crystals. (Photo by E. J. Tarbuck) across a plate...Talc Gypsum Calcite Fluorite Apatite Orthoclase Quartz Topaz Corundum Diamond 17 Any mineral of unknown |  | | Book | | occasion for many lem¬ ming legends, particularly in Norway. The lemmings, the Norwegians maintain, are obeying...layer of soft greenish rock shot through with smoky quartz. Free gold showed plainly through the rock....they swallow. They seem to prefer rocks rich in quartz, and they wan¬ der the countryside in search of...rated from the fleet. In its attempt to make a landfall on the island of Bermuda, luck ran out; the ship...evidence, a form of mineral called “shocked quartz.” Quartz crystals occasionally display a series of parallel |  | | Book | | all comprising myriads of colourless or white quartz grains but differing in their range of colours...a building stone. Because of its tough, angular quartz grains, however, the pale arenaceous rock known...light-coloured because they are composed essentially of quartz crystals together with two other minerals known...new rock type. In a sandstone, for instance, the quartz grains are squeezed so closely together that they...granite has broken down into crystals of sparkling quartz and spangled mica. Where the rock joints are closely |
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Landfall, Drammen, Buskerud, Norway