 | | Journal (article/letter/editorial) | | 443-52 The nature of kerolite, its relation to talc and stevensite G. w. BRINDLEY, DAVID L. BIStt, AND...Kerolites from Goles Mountain (Yugoslavia), Wiry (Poland), Madison Co. (North Carolina), and Kremze (Czechoslovakia)...(Czechoslovakia) are compared with talc and stevensite. Chemical analyses give a composition for kerolite...differ from stevensite. Kerolites come close to talc in structure and composition but differ in having...considered to be a useful varietal name for this talc-like mineral in agreement with the views of D'yakonov |  | | Journal (article/letter/editorial) | | FROM SERPENTINITE-PEGMATITE CONTACT (WIRY, LOWER SILESIA, POLAND) J. JELITTO,1 E. DUBIlqSKA,l A. WIEWlORA...University, Zwirki i Wigury 93, 02-089 Warsaw, Poland 2 Institute of Geological Sciences, Polish Academy...of Sciences Zwirki i Wigury 93, 02-089 Warsaw, Poland Abstract--Highly tectonized contact between serpentinite...serpentinite and younger pegmatite in the magnesite mine of Wiry contains various layer silicates. Vermiculite, chlorite...(1972, 1981) and Gajewski (1970). The rocks from Wiry are characterized by their diversity and the apparently |  | Sakharov, Boris A., Dubińska, Elzibieta, Bylina, Paweł, Kozubowski, Jan A., Kapron, Grzegorz, Frontczak-Baniewicz, Małgorzata (2004) Serpentine-smectite Interstratified Minerals From Lower Silesia (SW Poland) Clays and Clay Minerals, 52 (1) 55-65 doi:10.1346/ccmn.2004.0520107 | Journal (article/letter/editorial) | | SERPENTINE-SMECTITE INTERSTRATIFIED MINERALS FROM LOWER SILESIA (SW POLAND) B OR I S A. S AKH ARO V 1 , E LZÇ B I...University, al. ZÇ wirki i Wigury 93, 02-089 Warsaw, Poland 3 Institute of Geological Sciences, Polish Academy...Academy of Sciences, ul. Twarda 51/55, 00-818 Warsaw, Poland 4 Department of Material Engineering, Warsaw Technical...Technical University, ul. Narbutta 85, 02-524 Warsaw, Poland 5 Medical Research Center, Polish Academy of Sciences...Sciences, ul. Pawińskiego 5, 02-106 Warsaw, Poland Abstract—Interstratif ied serpentine-sm ectite was |  | | Journal (article/letter/editorial) | | Science and Technology in Cracow, 30-059 Cracow, Poland Mineral and Energy Economy Research Institute of...Polish Academy of Science in Cracow, 31-261 Cracow, Poland Correspondence: hycnar@agh.edu.pl; Tel.: +48-12-617-41-42...magnesites from the Polish deposits of Szklary, Wiry and Braszowice as SO2 sorbents under the conditions...availability of these rocks and, consequently, lower purchase costs, as well as high desulfurization...is questioned. The literature also indicates a lower efficiency of these rocks in the SO2 binding process |  | | Journal (article/letter/editorial) | | 630-636, 1995. CORRENSITE FROM NASEAWICE (LOWER SILESIA, POLAND): SOME PROBLEMS OF MINERAL IDENTIFICATION...University al. Zwirki i Wigury 93, 02-089 Warsaw, Poland 2 Institute of Geological Sciences, Polish Academy...Sciences al. Zwirki i Wigury 93, 02-089 Warsaw, Poland ) Institute of Geology, Russian Academy of Sciences...Ni, Mn, Cr etc.) between brucite-like sheet and talc-like layers and between two adjacent corrensite...serpentinite quarry at Naslawice near Sobotka (Lower Silesia, SW Poland). It occurred in a chlorite rich vein-like |  | | Journal (article/letter/editorial) | | ocean-floor metamorphism. Afterwards, an antigorite ± talc assemblage developed from the pseudomorphous serpentine...magmatism, and the metamorphic grade passed from lower greenschist- to amphibolite-facies conditions (Árkai...along an approximately 20 m wide talc schist zone consisting of talc, lizardite, dolomite, magnesite and...contacts with resorbed enstatite are often bordered by talc, chlorite and serpentine (Fig. 2f). In places, tremolite...5a). The Srp2 coexists with chlorite (Chl2) and talc (Fig. 6a). Serpentinite bodies in the Tisia Mega |  | | Journal (article/letter/editorial) | | authors are printed in SMALLCAPITALS,subjects in lower-case roman, and localities in italics. Actinolitc...(H.-M.), The nature of kerolite, its relation to talc and stevensite, 443 Broken Hill, New South Wales...37 560 ALPHABETICAL Carter's mine, Madison County, North Carolina, kerolite, 443 Cassiar mine, British...W.), PItlLLIPS (E. R.), and STONE (I. J.), The lower quartzofeldspathic gneiss at Broken Hill, New South...Mendips, crystal structure, 357 Christmas mine, Gila County, Arizona, ruizJte, 429 Chrome-picotite, New Caledonia |  | | Journal (article/letter/editorial) | | seriesof hydrousmagnesium-nickel silicates with talc-like structureand compositionbut with additionalwater...diffractionangle,is near 9.64 and is largerthan that of talc becauseof an absenceof close-packing of adjacentlayers...increasein the basalspacingas compared with the value for talc, about 9.35-9.38A,is attributedto the randomstackingof...doesnot permit their partial close-packing structureof talc (seeRaynerand Brown, 1973).The 002 diffraction peak...apparentbasalspacings, containingsmallnumbersof layers of talc crystallites is shownby the followingcalculatedvalues: |  | | Journal (article/letter/editorial) | | calc-silicateassemblage at the Christmasmine,Gila County, Arizona, with kinoite, apophyllite, smectite,andjunitoite...Hsien-MingWan (1977)The nature of kerolite,its relationto talc and stevensite'Mineral' Mag , 41, 443-452. Kerolites...Kerolites from Goles Mountain (Yugoslavia),Wiry (Poland)' MadisonCounty (North Carolina)and Kremze(Czechoslovakia)...Kremze(Czechoslovakia) Chemicalanalyseslead to are comparedwith talc and stevensite. with R mainlyMg and n about RsSi...considered to be a useful varietal name for this talc-like mineral. It cannot be defined as serpentine |  | | Journal (article/letter/editorial) | | orogen which extended across three continents from Poland, through Morocco to the USA (Fig. 2). The Variscides...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...Ruhr District, Germany, to the Upper Silesian Coal Basin, Poland. The basin fill began in a flysch-type...Feist-Burkhardt et al., 2008) (Table 2). During the Lower Jurassic (Liassic) dark claystones, black shales |  | | Book | | yielded enormous crystals weighing many tons. At lower temperatures than that at which pegmatites are formed...in ascending order of hardness, is as follows: 1 Talc 2 Gypsum 3 Calcite 4 Fluorspar 5 Apatite 6 Feldspar...between diamond and corundum than between corundum and talc. Minerals are tested for hardness either by trying...on the fact that a mineral sinks in a liquid of lower specific gravity than itself, floats in one of higher... Lustre Metallic. Common form Coarse to fine wiry; platy or scaly; dendritic; massive; rarely in |  | | Journal (article/letter/editorial) | | Hilaria jamesii. (Takachii: from taka, man; ciihii, a wiry grass ; the male ciihii.)-The grass which the Hopi...nodule;" potato.)-It is boiled and eaten with a talc of greasy taste called tiim'ln' &Xu, b1 potato clay...douglasii stenophylla. (Muiivi : uvi is the axil of the lower or main branches of a tree or plant; the rest of |  | | Journal (issue) | | north of Elliot Lake. (Courtesy F. W. Chandler). Lower left: Early Precambrian pillow lavas; Munekun Lake...Lake, District of Kenora. (Courtesy L. D. Ayres). Lower right: Cleavage rhomb of calcite, showing rhombohedral...in a Silurian lagoon about 400 m.y. ago; Welland County. (Courtesy Shell Canada Ltd.). right: left: —...Silurian Period. ( Courtesy Shell Canada Ltd. ) Lower left: Precambrian banded gneiss of the Grenville...Highway 11, Gravenhurst. (Courtesy W. M. Tovell). Lower right: Close-up view of the contact between gneiss |  | | Book | | pyroxene group, 101 group, 106 chlorite group, 109 talc, kaolinite, ; ; ; ; ; ; ; ; zeolite group...Reniform (or kidnev -shaped) Stalactitic (pendent) Wiry : Leafy : copper. copper. gold. internal structure...shape. ; after being bent, it returns and talc a mineral can be cut by a knife horn-silver is...devised by the Freiberg mineralogist Mohs : 1. Talc. 2. Gypsum. 7. Quartz. 3. Calcite. 8. Topaz...Thus, the These so-called degrees of hardness of talc, gypsum, and calcite, lie within much narrower limits |  | | Book | | alignment of pl aty minerals under the surface, as in talc and mother-of-pearl Silky like silk, due to an underlying...(note: it has no units). contrast to the diamond, Talc is the softest mineral, it is the lowest 011 Mob's...hexahedral, tetrahedra l, dodecahedral crysta ls; wiry, arborescent, massive Crystal system: cubic 14...Cleavage; fracture: none Habit: crysta ls very rare; wiry or scaly Crystal system: cubic 15 NATIVE ELEMENTS... It is used in alloys to increase hardness and lower the melting point. Antimony compounds are toxic | | | Book | | alignment of pl aty minerals under the surface, as in talc and mother-of-pearl Silky like silk, due to an underlying...(note: it has no units). contrast to the diamond, Talc is the softest mineral, it is the lowest 011 Mob's...hexahedral, tetrahedra l, dodecahedral crysta ls; wiry, arborescent, massive Crystal system: cubic 14...Cleavage; fracture: none Habit: crysta ls very rare; wiry or scaly Crystal system: cubic 15 NATIVE ELEMENTS... It is used in alloys to increase hardness and lower the melting point. Antimony compounds are toxic |  | | Book | | be washed down through the rock to be deposited lower down as different minerals which become often valuable...the preceding one. The softest on the scale (1) is talc; the hardest is diamond (10). the world's hardest...enough. Some are 'flexible' like molybdenite and talc (above) which means they bend. Some are 'elastic'...stibnite (right). Pearly Milky shimmer like pearl, e.g. talc (left). Above, left to right: The mineral barite...Great Down ZCk --~ CLAY GAULT FORA.fArtoN LOWER GREENSANO GROUP UNO/"1 0€:o (includes FOLKESiONE |  | | Book | | of lead, are metallic minerals. Others, such as talc, right, are non-metallic minerals. The World of...(2) but not fluorite (4)- Mohs' scale runs from talc {1) to diamond (10). The intervals on the scale...roughly 9 times as hard as talc. However, diamond is about 40 times as hard as talc. Some collectors take...powder mark, which can be mistaken for a scratch. 1. Talc A fingernail has a hardness of about 2-½. A copper...gold. But pyrite is harder, more brittle and has a lower specific gravity than gold. this page. It is based |  | | | | tabular, lamellar, den- dritic (arborescent), wiry, etc. Some aggregates of a more complex structure...way the pseudomorphs of quartz after calcite, or talc after quartz are formed. In nature, much rarer than...in order of increasing hardness as follows: (1) talc, (2) rock salt (or gypsum), (3) calcite, (4) fluorite...and its compounds, and in having a considerably lower content of arsenic, uranium and cobalt-nickel ores...material and finer particles in the central and lower course of the stream. In the same manner, minerals |  | | Book | | fibrous, tabular, lamellar, dendritic (arborescent), wiry, etc. Some aggregates of a more complex structure...way the pseudomorphs of quartz after calcite, or talc after quartz are formed. In nature, much rarer than...in order of increasing hardness as follows: (1) talc, (2) rock salt (or gypsum), (3) calcite, (4) fluorite...and its compounds, and in having a considerably lower content of arsenic, uranium and cobalt-nickel ores...material and finer particles in the central and lower course of the stream. In the same manner, minerals |  | | Book | | fibrous, tabular, Jamellar, dendritic (arborescent), wiry, etc. Some aggregates of a more complex structure...way the pseudomorphs of quartz after calcite, or talc after quartz are formed. In nature, much rarer than...in order of increasing hardness as follows: (I) talc, (2) rock salt (or gypsum), (3) calcite, (4) fluorite...and its compounds, and in having a considerably lower content of arsenic, uranium and cobalt-nickel ores...material and finer particles in the central and lower course of the stream. In the same manner, minerals |  | | Book | | however. are transparent. This specimen is from Union County, Oregon. Obsidian This specimen illustrates the... cleavage and color. The example, from Coryell County, Texas. contains the fossils of Cretaceous snails...Colorado. (Au; Cubic crystals] Native silver The wiry twisted structure shown by this sample from Keweenaw...compos1t1on as pyrite. Marcasite. however. forms under lower temperatures and from more acidic magma than pyrite...This specimen is from Red Mountain in San J uan County, Colorado. [Cu 3AsS 4 ; Or thorhombic crystals] | | | | | lead, are metallic minerals. Others, such as talc, right, are non-metallic minerals. — — The World...fluorite (4). Mohs’ scale runs from (1) to diamond talc (10). The intervals on the scale are not regular...roughly 9 times as hard as talc. However, diamond is about 40 times as hard as talc. Some collectors take...gold. But pyrite is harder, more brittle and has a lower specific gravity than gold. this page. It is based... Other aggregates are filiform (thread-like) or wiry. Minerals which crumble easily are earthy or powdery |  | | Book | | Devonian (408-360 mya) Named after the English county of Devon, this Period is often known as the ‘age...Silver Natural form: cubic crystals; often found as wiry or scaly growths. Hardness: can be scratched with...Uses: in the electrical industry. I-Spy for 10 Talc Natural form: granular or ‘panded’ masses; crystals...may be found in marbles that have been exposed to lower changes in temperature and pressure. Found: areas...5-25 cm long. a I-Spy for 30 Lithostrotion Age: Lower Carboniferous 360320 mya. Form: robust colonies | | | | | world-renowned gem and mineral collection at Los Angeles County Museum of Natural History since 1980. Joan Kaylor...intermediate layer of rock, and a thin cool crust. LOWER MANTLE ASTHENOSPHERE LITHOSPHERE CORE OUTER CORE...magnesium. It is composed of three zones: the immense lower mantle; the warmer, gooey asthenosphere in the middle;...instance—but geologists also have heavy, and ride lower in the mantle. The continental plates are thicker...endorsed Hutton’s view chronological order, with the lower that geological events in the past strata being |
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