Notes on anglesite, anthophyllite, calcite, datolite, sillimanite, stilpnomelane, tetrahedrite and triplite
نویسندگان
چکیده
منابع مشابه
High-Pressure Raman Study on Anglesite
High-pressure Raman spectroscopic experiments of anglesite, PbSO4, were carried out in a diamond anvil cell up to about 35 GPa at room temperature. Two stages of changes in the pattern of wavenumber-versus-pressure plot were observed in most of the vibrational modes. The first stage of change is the kink in the slope of wavenumber-versus-pressure plot at about 14 GPa, indicating a change in the...
متن کاملCo-ordination of boron in sillimanite
Kirkpatrick, R. J. (1981) In Kinetics of Geochemical Processes (A. C. Lasaga and R. J. Kirkpatrick, eds.). Mineral. Soc. Am. Washington, DC, 321-98. Kohli, C. S., and Ives, M. B. (1972) J. Crystal Growth, 16, 123-30. Kuo, L.-C., and Kirkpatrick, R. J. (1983) EOS, Trans. Amer. Geophys. Union, 64, 349. Lacmann, R., Franke, W., and Heimann, R. (1974) J. Crystal Growth, 26, 106-16, 117-21. Lofgren,...
متن کاملon semihypergroups and hypergroups
in this thesis, first the notion of weak mutual associativity (w.m.a.) and the necessary and sufficient condition for a $(l,gamma)$-associated hypersemigroup $(h, ast)$ derived from some family of $lesssim$-preordered semigroups to be a hypergroup, are given. second, by proving the fact that the concrete categories, semihypergroups and hypergroups have not free objects we will introduce t...
15 صفحه اولThe gedrite-anthophyllite solvus and the composition limits of orthoamphibote
Coexisting orthoalnphiboles (high Al-Na gedrites and low Al-Na anthophyllites) from the Post Pond Volcanics, Vermont, display a variety of textures that are interpreted to be equilibrium growth textures. These textures include: (l) discrete grains; (2) bladed intergrowths; (3) patchy intergrowths; (4) overgrofihs; and (5) lamellar intergrowths with lamellae parallel to (120). Coexisting orthoam...
متن کاملA Mossbauer Effect Study of Triplite and Related Minerals
Mdssbauer parameters are reported for the phosphate minerals triplite, zwieselite, triploidite, and wolfeite. Analysis of the absorption data confirms the existence of non-equivalent ferrous ions. The broadening of the resonance peaks is rationalized on the basis of a microscopic disorder due to half-occupied fluorine sites in the fluoride minerals and to sets of closelv related metal sites in ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the United States National Museum
سال: 1920
ISSN: 0096-3801
DOI: 10.5479/si.00963801.58-2345.437