 | | Journal (article/letter/editorial) | | St. Austell, columbite, r3I Penryn Granite Co. quarry, Halv,zsso, stokesite, 411 Wheal Cock Zawn, stokesite...I Somerset Mendips, chloroxiphite, 357 Merehead quarry, Cranmore, brucite, blixite, hydromagnesite, hydrocerussite...Saltburn, iron-boracite, 404 Hepworth Iron Co. quarry, Penistone, francolite, siderite (magnesian), 287...Hill, Radnorshire, actinolite, tourmaline, altered gabbro, 124 Coch, Glamoroan, pyrobelonite, roman6chite...SCOTLAND Arisaig, Inverness-shire, tholeiite, 273 Bad na h'Achlaise, Assynt, Sutherland, fenite, microeline |  | | Journal (article/letter/editorial) | | authors are printed in SMALLCAPITALS,subjects in lower-case roman, and localities in italics. Actinolitc...ALABASTER (C. J.), An occurrence of brucite at Merehead quarry, Cranmore, Somerset, 4o0 ALEXANDER (P. O.) and...the Bondoc Peninsula meteorite, I21 (Syn.), MI Bad na h'Achlaise, Assynt, Sutherland, fenitc, microcline...kerolite, 443 Cassiar mine, British Columbia, chrysotile, 453 CAWTHORN (R. G.), Petrological aspects of...W.), PItlLLIPS (E. R.), and STONE (I. J.), The lower quartzofeldspathic gneiss at Broken Hill, New South |  | | Report (issue) | | clinochrysotile curve______--_____-___.. The collection of chrysotile and lizardite curves..--Detailed analysis of...collection of chrysotile and lizardite curves Con. Detailed analysis of the chrysotile and lizardite...Y___-_____---_______-___------------_--_-_Antigorite and chrysotile (baltimorite), Baltimore County, Md_________...___________ Antigorite with minor amounts of chrysotile (Yu-Yen Shi stone), Liaoning Province, ManchuriaAntigorite...____ Differential-thermal-analysis curves of chrysotile plus lizardite, C>L, from New York, Cuba, and |  | | Journal (article/letter/editorial) | | Oompositio,z of some of the Rocks of the Lizard District, by W. H. ltadlo~ton, Esq., M.A., F.G.S. (Read...Cornwall : ' ~ "Sketch of the Geology of the Lizard District," by A. ~[ajendie, i. p. 32. "Hints on the Geology..." by Sir H. Davy, i. p. 3S. "On the Serpentine District of Cornwall," by the Rev. J. Rogers, ii. p. 416...works : ~ "On the Physical Structure of the Lizard District," by Professor Sedgwick (Trans. Cambridge Phil...latter is of the same opinion, but suggests that the gabbro, greenstone (including some of what we now should |  | | Journal (article/letter/editorial) | | Leibniz University, Welfengarten 1 D-30167 Hannover, Germany Abstract The Central European Variscides and their...with the leading raw materials sand plus gravel, quarry and dimension stones and limestones used for the...(Fig. 1). It has to be noted that among the term quarry and dimension stones there are also some hidden...rocks which formed the Precambrian through the Lower Carboniferous, when the Visean folding put an end...extension was at its maximum during the Devonian and Lower Carboniferous. Basic submarine volcanic activity |  | | Book | | results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned in such a way that they form...between that of the sample and that of the next lower grade. In this case we consider the hardness to...Different scratch hardness on kyanite 20 somewhere lower grade adding a half-grade to it. Although the determination...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual...identification. Nobody should be discouraged by initial bad luck, it is sometimes difficult even for an expert |  | | Book | | look for. Michael O’Donoghue Proustite (East Germany) 7 Rocks We can define a rock as a large mineral...Darker and even poorer in silica than diorite is gabbro, containing a calcium-rich plagioclase and pyroxene...Granite Nepheline syenite Syenite Dio rite Gabbro Peridotite 13 Dunite Serpentinite Rhyolite...the fixed index (the ordinary ray) at a higher or lower reading than the moveable (extraordinary) ray. Where...incident beam are retarded by passing through to the lower side of the film, rejoining the main beam either |  | | Book | | immensely popular handbook of minerals appeared in Germany I obtained a copy fo! my personal library and was...culture, derives its name from the saltmining district of Hallstatt in Upper Austria, where many prehistoric...minerals are concerned. Opal is still thought to bring bad luck, and similar stories are told about certain...of these fourfold axes in all. The considerably lower symmetry of a monoclinic crystal is shown in Fig...crystallographic symmetry of a body may often be lower than its apparent geometric symmetry. In a pyrite |  | | Book | | A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...manganese oxide on limestone, Solnhofen, Bavaria, Germany * 11.5 x 24 x 0.5 om MINERALS: PRODUCTS OF A...such as Porcupine and Hemlo districts; Noranda district, Quebec. USA: Mother Lode belt and others in...Localities Canada: Cobalt mining district and Thunder Bay District, Ontario. USA: several localities... Wire silver, Silver Islet Mine, Thunder Bay District, Ontario, Canada * 11.5 x 14x 11 om Silver has |  | | Report (volume) | | Serpentinite and Rodingite in the Hunting Hill Quarry, Montgomery County, Maryland By DAVID M. LARRABEE...BULLETIN 1283 Description of rocks exposed in the quarry near the center of the Hunting Hill ultramafite... Geologic map of the Hunting Hill serpentinite quarry __ In pocket 1. Index map showing location of the...Md______________ 3 2. Photograph of the Hunting Hill quarry, 1966___________ .5 3. Photograph of serpentinite...Hunting Hill quarry--------------4. List of minerals identified from the Hunting Hill quarry __ 5. Structuraltrends | | | Book | | results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned jn such a way that they form...that of the next lower grade. In this case we consider the hardness to be of the lower grade adding a half-grade...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual...identification. Nobody should be discouraged by initial bad luck, it is sometimes difficult even for an expert...should preferably be more detailed, e.g. walls of a quarry, or refuse heap specimen, so that one could find |  | | Book | | Tubingen Germany and c. Schmitt-Riegraf Lecturer in Mineralogy University of Munster Germany Translated...Chapman & Hall GmbH, Pappelallee 3, 69469 Weinheim, Germany Chapman & Hall USA, 115 Fifth Avenue, New York...Verlag, P.O. Box 30 03 66, D-70443 Stuttgart, Germany Softcover reprint of the hardcover 2nd edition...Leptochlorite 4.8.2 Serpentine group 4.9 Antigorite 4.9.1 Chrysotile 4.9.2 Feldspar family 4.10 4.10.1 Alkali feldspars...Schwabische Alb and in the Laacher volcanic areas of Germany. 2. We give emphasis to the common minerals. They |  | | | | zircon, amphibole, pyroxene, chlorite, talc, clay, chrysotile, chrysocolla, quartz, lazurite are the examples... variable), p. 226 sulphur (yellow), p. 90 chrysotile (green, white, yellow), p. 214 garnet (red,...rhyolite (p. 256) Medium diorite (p. 250) Dark gabbro (p. 252) andesite (p. 260) basalt (p. 262) obsidian... In the southern prairies and the St. Lawrence valley, this fragile layer of sediments produced fertile...Township, Cochrane District, Ontario; Darwin Mine, McMurray Township, Algoma District, Ontario; nuggets |  | | Book (edition) | | dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....Scbwarzwald Mts., in the Sailauf quarry, Spessart Mts., Bavaria. both Germany, and from the Rabejac deposit... = = = = = Acanthite, x 16 mm, Freiberg, Germany, H Abernathyite, 12 mm, Ririera/, France, H Abhurite...at the Himmelsftirst mine, Freiberg, both Saxony, Germany. In the subtropical areas acanthite may occur...byssolite. Mono- coast of North America: Kobuk River Valley, Alaska, clinic, C2/m, a,b,c = 9.89, 18.20, 5.31 |  | | Report (issue) | | two reports more than to any others, namely: "Chrysotile Asbestos, Its Occurrence, !J~xpioitation, Milling................. . Gabbro-Ogeechee Brick Plant ..........•.................... Gabbro-8 miles southeast...CONTENTS PAGE Hornblende gabbro-Bethlehem Church .............•........ Hornblende gabbro, altered-Bethlehem....... . Hornblende gabbro-near Monticello ........................ . Olivine gabbro-Hog Creek Corundum... . . . . . . . . . . . . . . . . . . . 83-86 Chrysotile . . . . . . . . . . . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | nephrites. Europe Swiss Alps French Alps East Germany West Germany Poland Finland Asia America California Wyoming...deposits are concentrated mainly in the Swiss Alps, Germany, Silesia and northern Italy. The Swiss Alps. Two...of Salux, at the contact between saussuritized gabbro and serpentinites; it is partly schistose and...contact between greenstone (prasinites) formed from gabbro, and chloritized and carlDonatized serpentinites...of this deposit are not those of nephrite. East Germany (Thuringia). According to Rimann (1938, 1939), |  | Kislov, Evgeniy V., Erokhin, Yuriy V., Popov, Mikhail P., Nikolayev, Anatoliy G. (2021) Nephrite of Bazhenovskoye Chrysotile–Asbestos Deposit, Middle Urals: Localization, Mineral Composition and Color. Minerals, 11 (11) 1227 doi:10.3390/min11111227 | Journal (article/letter/editorial) | | minerals Article Nephrite of Bazhenovskoye Chrysotile–Asbestos Deposit, Middle Urals: Localization,...evg-kislov@ya.ru Abstract: In the Bazhenovskoye chrysotile–asbestos deposit (Middle Urals), nephrite bodies...serpentinite type were found on the contact of after gabbro rodingites and serpentinites. The color is uniform...combination of metasomatic and metamorphic processes. Chrysotile–Asbestos Deposit, Middle Urals: Localization...discovery of nephrite in the developed Bazhenovskoye chrysotile– asbestos deposit in Sverdlovskaya Oblast is |  | | Journal (article/letter/editorial) | | green, pseudo-fibrous mixture of lizardite and chrysotile that is restricted to fractures (vein serpentine)...similar orientations and mineralogy within the gabbro unit contain adularia which have been previously...ratios indicate that the mineralisation within the gabbro and peridotite is genetically similar. The primary...typically lizardite and chrysotile or, more rarely, antigorite. Lizardite and chrysotile develop at temperatures...temperatures, typically within the lizardite-chrysotile stability field, some Fe partitions into brucite |  | | Report (edition) | | antigori te, generally lamellar 01~ scaly, and chrysotile, generally fibrous. Serpentine is often more...information should apply to the Geological Survey. Chrysotile. - This mineral is a variety of serpentine with...margin of the Scottish Highlands. In the Inellan district the Fracture-zone separates ancient, altered grits...certain fine-grained varieties of the Ben Buie gabbro complex (which is of Tertiary age and not serpentinized)...associated with it are actinolite, steatite, chrysotile, and magnetic and copper pyrites. From the trial |  | | Journal (article/letter/editorial) | | by concentrically zoned dunite–clinopyroxenite–gabbro (“platinumbearing”) and ophiolitic massifs with...with intensely serpentinized rocks of the dunite–harzburg ite complex being the most widespread. Direct...[1, 3–5, 7–11, 14]. The wellknown Klyuchevskoi gabbro–ultramafic massif is the most representative ophiolitic...top downward): dunite–wehrlite– clinopyroxenite–gabbro (layered part of the ophiolite section) and dunite–harzburgite...peridotites). The dunite–wehrlite–clinopyroxenite–gabbro com plex constitutes several tectonic blocks in |  | Silantyev, S. A., Krasnova, E. A., Cannat, M., Bortnikov, N. S., Kononkova, N. N., Beltenev, V. E. (2011) Peridotite-gabbro-trondhjemite association of the Mid-Atlantic Ridge between 12°58′ and 14°45′N: Ashadze and Logachev hydrothermal vent fields. Geochemistry International, 49 (4) 323-354 doi:10.1134/s0016702911040070 | Journal (article/letter/editorial) | | 2011, Vol. 49, No. 4, pp. 339–372. Peridotite–Gabbro–Trondhjemite Association of the MidAtlantic Ridge...the Nd isotopic compositions of the rocks of the gabbro–peridotite association. The trondhjemites of the...oreforming potential. Keywords: midocean ridge, gabbro, peridotite, oceanic lithosphere, petrology, geochemistry...(USA) in 1997; Yokosuka (Japan) in 1998; Meteor (Germany) in 2002, 2003, 2005–2007; James Cook (United Kingdom)...complex at several sites in the slopes of the rift valley between 14° and 16°N. Since 1992, the ocean floor |  | | Report (issue) | | Finland .. France .. .. .. .. .. . .. .. .. .. Germany . . .. .. Italy .. .. .. U.S.. S.R. .. .. .. Other...varieties, actinolite, amosite, anthophyllite, chrysotile, crocidolite, and tremolite, have some commercial...commercial applications, but of these amosite, chrysotile, and crocidolite greatly exceed the others in importance...three has its special field of usefulness, but chrysotile is by far the most important owing t·o the fact...States, Great Britain, the Soviet Union, Japan, Germany, Belgi11m, and France. The United States, which |  | | Report (issue) | | ........ 9 5. Ternary diagram of serpentinite, gabbro, and graywacke friction. ........................units are juxtaposed with various serpentinite, gabbro and graywacke units to the east, suggesting that...prepared from serpentinite and gabbro from the Coast Range Ophiolite, a Great Valley Sequence graywacke, and...from 0.36 for the serpentinite to 0.84 for the gabbro, with four of the rock types having coefficients...west side and the Coast Range Ophiolite and Great Valley Sequence on the east side. Three Franciscan metasedimentary |  | | Journal (article/letter/editorial) | | outcrops or examine minutely every part of the district. Owing to the intricacy of the coast in certain...its characters from the ordinary schists of the district, and, where associated with the latter, occurs...serpentine and a gabbro, especially in the Anglesey group. For instance, it' we alight at the Valley Station on...map. :But on reaching this we find it a mass of gabbro, generally rather coarse--considerably altered...north of its eastern end. From the west end of this gabbro massif we made ~ for the shore. ]~ere we found |  | | Book | | major producing districts, or a representative district if there are many. We name the chief mining companies...graphite supply must come not merely from one district but from a single mine. Thus the physical properties...problems faced by management of a gravel pit or stone quarry to alleged health hazards that affect the whole...generic name for the minerals chrysotile, crocidolite, and amosite. Chrysotile is the fibrous form of serpentine;...2,675°F or 1,468°C is second only to that of chrysotile). However, this grayish- The asbestos minerals |
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