 | Seo, Jung Hun, Yoo, Bong Chul, Villa, Igor M., Lee, Jun Hee, Lee, Tongha, Kim, Chansu, Moon, Kun Ju (2017) Magmatic–hydrothermal processes in Sangdong W–Mo deposit, Korea: Study of fluid inclusions and 39Ar–40Ar geochronology. Ore Geology Reviews, 91. 316-334 doi:10.1016/j.oregeorev.2017.09.019 | Journal (article/letter/editorial) | | of Earth Sciences, University of Bern, Bern, Switzerland 4. Sangdong Mining Company, Korea *Corresponding...whereas the latter veins host quartz–biotite–muscovite (mica) alteration. Deep quartz veins with molybdenite...hosted in Precambrian metamorphic basement. Three muscovite 39Ar–40Ar ages between 86.6 ± 0.2 and 87.2 ± 0...geochronology on the whole rock in addition to the muscovite, biotite, and hornblende in the Sangdong deposits...granite (Fig. 2). The Sangdong granite, with an muscovite K–Ar age of 87.5±4.4 Ma (Kim, 1986), is rich in |  | Malek, Md Abdul, Eom, Hyo-Jin, Hwang, Heejin, Hur, Soon Do, Hong, Sungmin, Hou, Shugui, Ro, Chul-Un (2019) Single particle mineralogy of microparticles from Himalayan ice-cores using SEM/EDX and ATR-FTIR imaging techniques for identification of volcanic ash signatures. Chemical Geology, 504. 205-215 doi:10.1016/j.chemgeo.2018.11.010 | Journal (article/letter/editorial) | | large-scale eruptions with a volcanic explosivity index (VEI) of 4 or higher can push ash plumes into stratosphere...(herein, notated as (Na,K,Ca)-feldspar), illite, muscovite, biotite, CR oxide, germanium oxide, and titanium...feldspars, pyrophyllite, kaolinite, halloysite, muscovite, illite, montmorillonite, sillimanite, biotite...silica, alkali feldspar, plagioclase, illite, muscovite, kaolinite, and montmorillonite mineral particles...VA mineral particles, including silica, AN muscovite, and illite, based on their X-ray and ATR-FTIR |  | | Catalog/List | | pegmatite mat rix with a l i ttle QliJart z & Muscovite. 2tx1t" , £8.00. Specimen 8 : Sha rp lustrous...cry s tal , impl anted on .quart z/a r s enopvrite vei nstuff, ' 1tY1t ", £8.00. Spec imen B: Sharp s ilvery...}x3tx3t", £40. Ufj 70. QUARTZ. St. Gotth a rd, Ticino, Switzerland. Choice t ranspor e nt slightly smoky elong |  | | Catalog/List | | on mat ri x with odd silvery crysta l boo~s of Muscovite mica . 1-txlitx1 ", £3 . 50p 2 . ALMANDINE GARNET...3x2x1i " , £3 . 50p . Specimen C: Rich dark greeni sh vei nl Bts and masses with quartz . 1-i}xl~X 1-t" , £1...axES . £5 . 00 7B. ~UAR TZ . st . Gotthard , Ticino , Swi tzerland . A l8rge mostly transparent gl~ssy |  | | Journal (article/letter/editorial) | | f • 1øC/m.y.for 2600 to 2550 Ma (rutlie-vein muscovite),•0.6øC/m.y. for 2550 to 2511 Ma (vein muscov... We conducted23 incre- quartz-albite-biotite-muscovite-calcite-pyrite. xenolith appears massive, but...•om mai•-staEe •ola qu•tz vei•, s•ple ] 6E08 + ] ]. Biotiteis•ueleateao• vei• w•]l (uppert•ira o[ p•oto)•na...pyrite.C. H•na speeime•o• quartz-muscovite •me•ts•om mai•-staEe Eolaqu•tz vei•, s•ple appearsliEUt.Centimeterse•]e•o•E...Fine-Erai•easerieiteaeries t•e [abrie•na wraps•ou•a vei• •aEments•a •bite crystals. P•otomiero[rap•sin eross-pol•rizea |  | | Journal (article/letter/editorial) | | of this new variety of mica with that of pure muscovite may indicate structural changes. The optical properties...this unit cell data with those of fuchsite and muscovite makes it extremely probable that the space group...2Va 37~ well with the unit-cell dimensions of muscovite and fuchsite reported in the literature (Whitmore...that of muscovite (A.S.T.M. card 6~263) suggests structural changes in the green mica. For muscovite the...corresponding powder lines of green mica and muscovite. These differences may, however, be due to preferred |  | | Book | | points for determining hardness, and streak plate muscovite, and biotite. Flexible but inelastic minerals...porcelain; beryl, a source of beryllium ore; muscovite, for electrical and heat . insulation; and lithium...Berthierite, Romania, 0.2x 2 Baumhauerite, Switzerland, 8x 3 Descloizite, Berg Aukas (Namibia), Jx...and cleavage. 75 Brown Streak 2 Sartorite, Switzerland, 8x 1 Wurtzite, Oruro (Bolivia), 1Ox 1 Wurtzite... radiated, compact. Occurrence: In hydrothermal vei ns. Accompanying Minerals: Sphalerite, galena, pyri |  | | Journal (article/letter/editorial) | | DECEMBER, 1966 EXTERNAI, SPECIF'ICSURFACEAREA OF VEI{MICULITEI K. V. RalraN AND NI. NI.'n{onrr.rxr, Department...Pine, N. Carolina (Ward's); muscovite from Ontario, Canada (Ward's) Muscovite, biotite, and vermiculite...Table 2 gives the surface area for kaolinite, muscovite, biotite, and vermiculite of different homoionic...homoionic systems.The measured surface area of muscovite and biotite is about 50 to 100/6 more than that of...curves (Fig. 1) were symmetrical for kaolinite and muscovite; a tailing of the peak is noticed in all samplesof |  | | Report (issue) | | coarse-grained marble. Distinct impurities are quartz, muscovite, graphite, rutile, titanite and occasionally apatite...w w. n g u . n o Visit adress: Leiv Eirikssons vei 39 |  | | Journal (article/letter/editorial) | | Engineering and Applied Geophysics, S. P. Andersens vei 15A, 7491 Trondheim, Norway, Reynir.Reynisson@NGU...Biotite-chlorite-garnet-bearing schist Biotite-muscovite gneiss Feldspar-amphibole-plagioclase-chlorite-bearing...syenogranite Gneissose-chlorite-clinopyroxen-muscovite metagranite Granofelsic-chlorite-bearing metafelsic-rock...metafelsic-rock Layered-biotite semipelite Layered-muscovite quartzite Lineated semipelite Surtsey Research...Lineated-muscovite semipelite Lineated-muscovite-biotite semipelite Metacarbonate-rock Muscovite-biotite-bearing |  | Imura, Takumi, Minami, Yusuke, Ohba, Tsukasa, Matsumoto, Akiko, Arribas, Antonio, Nakagawa, Mitsuhiro (2019) Hydrothermal Aluminum-Phosphate-Sulfates in Ash from the 2014 Hydrothermal Eruption at Ontake Volcano, Central Honshu, Japan. Minerals, 9 (8). 462pp. doi:10.3390/min9080462 | Journal (article/letter/editorial) | | TheVolcanic VolcanicExplosivity ExplosivityIndex Index(VEI) (VEI)of ofthe the2014 2014eruption eruption was was...silica–pyrite, ± alunite ± kaolin, silica– silica–muscovite ± chlorite, and silica–K-feldspar ± albite ± garnet...results indicate pyrophyllite–pyrite, silica–muscovite ± chlorite, and silica–K-feldspar albite ± garnet...© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed |  | | Journal (volume) | | K-feldspar, calcite or epidote. Biotite and rarely muscovite are present. Accessories are apatite, zircon,...sericitized schists locally contain both biotite and muscovite. TABLE 1 List of minerals Gold . . ................ . . . .. . Amphibole ............. . Muscovite .... .... ...... . Chlorite .. .. ..............is also a main mineral in the arsenopyrite-quartz vei n as euhedral grains. Arsenopyrite does not occu...is common, especially in the arsenopyrite-quartz vei n. Twinning has been observed in gangue-filled fractures |  | | Journal (article/letter/editorial) | | do not extend through matrix. Bergell massif,Switzerland. C. Veins in dilational fracture system in K-feldspar...PLUTONS 417 5 km Early and Late Post-Magmatic vei ns pl + Kf +q 40 ø pl + Kf + q ß ' . o 1 Kb...sulfurin a porwith roughlyequalamountsof biotite and muscovite, phyry copper deposit. In case B, Li remains in...6 percent. Muscoviteis a late-stage unaltered muscovite, but Li liberated from biotite mineral tending...the system. about equally distributed between muscovite and Mechanicalrelease in the early post-magmatic |  | | Report (edition) | | resemble vein-quartz. sent, while small flakes of muscovite are occasionally scattered through the Joints...deflections. 30 20 5-1 6 • • • • There is little muscovite except in small lenticular clots which are elongated...elongated The clots are composed of large muscovite parallel to the strain partitions. flakes in association...the The hand specimen, but a few tiny flakes of muscovite can sometimes be see n. most obvious impurity... mainly limonite and chlorite after biotite. Muscovite is uniformly distributed and the flakes are often |  | Key, R. M., Clark, G. C., May, F., Phillips, E. R., Chacksfield, B. C., Peacock, J. D. (1997) Geology of the Glen Roy district - Memoir for 1:50 000 Geological Sheet 63W (Scotland) British Geological Survey, London. | Book | | quartz and feldspar, have not been recognised. Muscovite, \vhen present, is always less abundant than biotite...plagio clase and subordinate potassium feldspar. Muscovite is an uncommon constituent but is more abundant...plagioclase is always sericitised to some degree with muscovite crystals developing along the clea\rage planes...psammites rather than quartzites. Micas are rare, muscovite being the more abundant, and well defined mica-bearing...and feldspars are more coarsely crystalline and muscovite is slightly more abundant, forming thin micaceous |  | | Report (issue) | | thickness is something less than 20 ft., but individual vei ns Five may be as much as 60 ft. wide and traceable...analysis by Dr. H. F. Earwood of a pegmatite districts. vei n close to Locality A, Fig.3, is quoted from Professor...deter1rtinations made on selected materi al from three vei ns: (1 Local1ty B, Fig. 3 ; (2) Locality C, Fig.3...p1"esent in s1r1aller amount, Large plates of muscovite, some a foot or more ·in diameter, are developed...to the Strontian masses • . They are typical muscovite-pegmatites and consist mainly of white feldspar |  | | Catalog/List | | Oluish- green cryst311ino mass with a li ttle muscovite mica . 1~1;f-x1 " , D.75p 50. HEVATITE . St ....rr· . in length lini ng large CElvi tics in qUDrtz vei nstuff . 2.zx2x1c' ." , £19.00 66 . oLIVENITE . Wheal...cul;::r crystuls thickly coveri ng cellulm qUClrt z vei nstuff. :}.i-x:37x2 " , £9 . 00 86 . NATIVE SILVE~ |  | | Book (edition) | | and t he y are ma i nl y quar t z-wol fr am it e vei ns of h igh- t em perat ure hy drot hermal fo rma...Dav i s (1964b, c and d) and Rux t on (1957a). The vei ns usuall y occur i n t he gran iti c i n t rus i...ly, sp ec i mens of be ry l and quartz -bear ing vei n ma t er i al i n gran it e were collec t ed fr...r it e (brass y ellow), t raversed b y q uar tz vei nlets (whit e): Ma On Shan Iron M i ne. X 1.8. Pyrrhotite...masses i n t he wol fr am it e-bear i ng quartz vei ns and gre i sen at Needle H i ll, Sha Lo Wan and |  | | Journal (article/letter/editorial) | | scapolite s_•_heelite (64% W) MS _sericite, muscovite SE s__e rpentine SD siderite SI sillimanite...c_in_nab ar C¾ c_la X - See also CX = clay/ muscovite combination KA kaolin KY kvanite KF K-spar...unspecified Kß C> clay> muscovite C# I clay = C< I clay< MU K# K< " " I muscovite PF alone CZ CU...including stockwork and V V [ V V V veins gouge Vei .....&inlets, fracture •D + '•7 V D•: V fillings...fillings minor disseminations 2 • V •P+•v I ? vei dpervasive moderat ..... lopes E |  | | Book | | l), Co ntu Va lley (spodumene), and Vo ineasa (muscovite), are the mo l representative. Sig nificant s...hosts pod iform chromite and c hrysotile a be. tos vei n . Local enric hme nt in Fe.N i-sulphides are a...beryl, tourmaline, and columbite); Voineasa (muscovite and to urmaline): and at the Con\u Valley (spodumene...which occur in veins. and le nses. These. si liceous vei ns are u. ua lly a few cen- MI NE R ALOG I CAL R...ocolla. Al o included. within their quartz-calc ite vei nlet . are several silicate minerals, suc h as a |  | | Report (issue) | | ....................................... 16 Muscovite.......................................................................................... 18 «Vei ns.................................................and brecciated sequence of quartz - chlorite ± muscovite + sericite + graphite schists. Figure 2 shows...from Jabiluka display foliation best defined by muscovite and chlorite. Small-scale crenulations and isoclinal...metamorphic rocks consist of quartz, chlorite, muscovite, dolomite, magnesite, and graphite in a finegrained |  | | Journal (volume) | | unaltered granite. Analyses are also presented for muscovite and chlorite (ripidolite) from one of the Kymi...remains obscure, but it is probably iron-rich muscovite or zinnwaldite. The chemical composition of genthelvite...divided to 1) muscovite-chlorite, 2) muscovite-chlorite-genthelvite, 3) quartz muscovite-chlorite ( -biotite)...-biotite) and 4) quartz-muscovite-genth elvite-chl o rite types. Chlorite rep laces muscovite along smal l fractures...apatite together with genthelvite. Tbe quartz-muscovite-chlorite (-biotite) rock which also contains remnants |  | | Journal (article/letter/editorial) | | of the Wamba field (central Nigeria) occurs in muscovite-quartz-microcline pegmatites, which are related...peraluminous biotite granite, biotite-muscovite granite, and muscovite granite plutons. Sadie metasomatism...primary mineralization is hosted in quartz-feldspar-muscovite pegmatites. Cassiterite and subordinate columbite-tantalite... (1984), and Dada et al. (1987) bearing quartz-vei ns occur in the reactivate d crust of the central...distinguished: biotite granites, biotite-muscovite granites, muscovite granites, and albitized granites, or |  | | Journal (article/letter/editorial) | | allanitc,chalcopyrite,rutile, actinolite,pyrrhotite,muscovite,hematite, epidote, ilmenite, malachite,chrysocolla...containsfrom 20 to 30 percentcombinedbiotite and muscovite;muscoviteis generallythe more common. 2o Inclined...mostof onepart of the vein, but 1 foot away the vei netite, limonile, and pyrite were found in at least...samples. Fourteen minerals--actinolite, pyrrhotite, muscovite, epidote, ilmenite, hematite, malachite chrysocolla...across. Limonite from Lemhi Pass. Rutile and muscovite occur in and hematite are two of the most abundant |  | | Book | | c»s1vc '\fore Oe '' � - -- - FIG. I I - 1 -4. Vei n system of lnakuraishi and Oe mines. Arrows show...3, in the sou them ex ten sion of the H onmyaku vei n, a grou p of ve in lets occur en ecl,e/011, stri...the di splacement of the fissure of the H onmyaku vei n. The veins occur ju st above the the top of the...Triassic sandstone and clayslate surrounding the vei ns suf e red skarn ization, be com i n g green or...in the longitudinal section of the Chosei M a i n vei n . ' c_________ 300L ---------�3 __ 2o_ 320 ·c |
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