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  • 2005-2009  (1)
  • 1975-1979  (16)
  • 1890-1899  (5)
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  • 11
    facet.materialart.
    Unknown
    Prehistoric Times in Egypt and Palestine (1892)
    Boston, Mass., etc. : Periodicals Archive Online (PAO)
    The North American Review. 155 (1892:July/Dec.) 69 
    Details
    ISSN: 0029-2397
    Topics: English, American Studies , History
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:3197-1892-155-00-000028
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  • 12
    Electronic Resource
    Electronic Resource
    Carpenter on Eozoon (1892)
    [s.l.] : Nature Publishing Group
    Nature 45 (1892), S. 461-461 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE scientific world is deeply indebted to Dr. Dallinger for liis excellent new edition of Carpenter's invaluable work on the microscope, and among other things for his retaining unchanged the description of Eozoon canadense, as a monument of an important research up to a certain date. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/045461a0
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  • 13
    Electronic Resource
    Electronic Resource
    Eozoon (1892)
    [s.l.] : Nature Publishing Group
    Nature 45 (1892), S. 606-606 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MR. GREGORY has, I fear, slightly mistaken the meaning of my remarks, which were intended rather to excuse than to blame him. The specimen of Eozoon collected by the late Mr. Vennor at Tudor was figured in connection with my paper of 1867 as a type specimen, in so far as macroscopical ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/045606a0
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  • 14
    Electronic Resource
    Electronic Resource
    Occurrence of diamond in a mica–garnet Iherzolite xenolith from kimberlite (1975)
    [s.l.] : Nature Publishing Group
    Nature 254 (1975), S. 580-581 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The xenolith (BD2125) was collected from the kimberlite of the Mothae kimberlite diatreme5 in northern Lesotho. During preparation of a thin section, a small, extremely hard grain was encountered. Preliminary tests (Moh's hardness 〉 9, insoluble in hydrofluoric acid HF) and subsequent ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/254580a0
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  • 15
    Electronic Resource
    Electronic Resource
    Chemistry and origin of phlogopite megacrysts in kimberlite (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 336-338 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The average and range of compositions of nine selected megacrysts are shown in Table 1, together with the averages of analyses for primary and secondary micas in peridotite xenoliths in kimberlite (ref. 1 and new data) and analyses of micas from four glimmerite nodules in kimberlite (three from the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/253336b0
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  • 16
    Electronic Resource
    Electronic Resource
    Manganese thermometer for mantle peridotites (1979)
    Springer
    Contributions to mineralogy and petrology 71 (1979), S. 157-169 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The temperature dependence of the Mn-Mg distribution between garnet and clinopyroxene, originally proposed by Carswell, was confirmed by Shimizu and Allègre (1978) using ion microprobe and electron microprobe data. High precision electron microprobe analyses of a larger set of 52 Iherzolites from S. Africa and Malaita, Solomon Islands show considerable scatter in the temperature dependence of this distribution, and correlation with the CaO content of the garnet is indicated. A new distribution coefficient is based on the reaction: $$\begin{gathered} \operatorname{Mn} _{\text{2}} \operatorname{Si} _2 \operatorname{O} _6 {\text{ + }}\operatorname{CaAl} _{2/3} \operatorname{SiO} _4 {\text{ + }}\operatorname{MgAl} _{2/3} \operatorname{SiO} _4 \hfill \\ {\text{Mn - pyroxene grossular pyrope}} \hfill \\ {\text{ }} \rightleftharpoons \operatorname{CaMgSi} _2 \operatorname{O} _6 {\text{ + }}2\operatorname{MnAl} _{2/3} \operatorname{SiO} _4 \hfill \\ {\text{ diopside spessartine}} \hfill \\ \end{gathered} $$ It was calibrated against temperature determined from two independent thermometers (Wells pyroxene and O'Neill-Wood garnet-olivine) for Iherzolitic assemblages, and shown to to be sensitive to within + 50 °C for most specimens in the range 900 °– 1,300 ° C. This distribution coefficient appears independent of pressure within the uncertainty of the available data, and has the potential to be a third independent thermometer for use in garnet Iherzolites and possibly eclogites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00375432
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  • 17
    Electronic Resource
    Electronic Resource
    Garnet and pyroxene compositions in some diamondiferous eclogites (1976)
    Springer
    Contributions to mineralogy and petrology 58 (1976), S. 203-220 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Analyses are reported for garnet and pyroxene from 17 eclogites that contain diamond. The garnets contain small but significant contents of Na, Ti and P and the pyroxenes contain traces of K. The diamond-bearing eclogites do not constitute a unique compositional group but show a range of mineral compositions consistent with a very high P-T environment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00382185
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  • 18
    Electronic Resource
    Electronic Resource
    Aspects of the mineralogy of alnöitic breccia, Malaita, Solomon Islands; comparison with continental kimberlites (1978)
    Springer
    Contributions to mineralogy and petrology 67 (1978), S. 189-193 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Megacrysts of titanian pyrope, high-Ti bronzite, sub-calcic diopside to augite, and phlogopite in an alnöitic breccia, Malaita, Solomon Islands, have compositional features which distinguish them from silicates in kimberlites. Particularly important is the high content of Al2O3 in the Malaita silicates, which may reflect the higher Al2O3 content of alnöite than kimberlite. The phlogopite megacrysts fall into two populations, one richer in Mg and Cr, and lower in Ti, than the other. The pyroxenes may also fall into two groups characterized by high and low Mg, Cr and Ni. Two stages of crystallization may be responsible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01046575
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  • 19
    Electronic Resource
    Electronic Resource
    Skeletal crystallization and residual glass compositions in a cellular alkalic pyroxenite nodule from Oldoinyo Lengai (1978)
    Springer
    Contributions to mineralogy and petrology 67 (1978), S. 139-149 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The alkalic pyroxenite nodule consists of megacrysts of diopside, apatite, perovskite and titanomagnetite in a groundmass consisting of diopside, apatite, titanomagnetite, nepheline, melilite, garnet and vishnevite crystals of various shapes, including previously undescribed skeletal and dendritic shapes, together with vesicles and residual glass. The residual glass is poor in SiO2 (38–40 wt%), and extraordinarily rich in Na2O (12.8–15 wt%), SO3 (1–1.5 wt%), and Cl (0.25–0.7 wt%), as a result of rapid, non-equilibrium crystallization of groundmass phases from a CO2-rich nephelinite melt. The Oldoinyo Lengai alkalic carbonatite lavas do not represent extreme products of the fractional crystallization of pyroxene, wollastonite, nepheline and alkali feldspar from the carbonated nephelinite melt. The most likely connection between the carbonatite and silicate magma types is one of liquid immiscibility, probably involving phonolite melt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01046572
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  • 20
    Electronic Resource
    Electronic Resource
    Designs and circuit bases (1978)
    Springer
    Archiv der Mathematik 30 (1978), S. 665-671 
    Details
    ISSN: 1420-8938
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01226115
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