Mineralogical Magazine
SCOPUS (1969-1970,1978-1989,1993-2025)SCIE-ISI
0026-461X
1471-8022
Anh Quốc
Cơ quản chủ quản: Mineralogical Society , MINERALOGICAL SOC
Lĩnh vực:
Geochemistry and Petrology
Các bài báo tiêu biểu
Nomenclature of Amphiboles; Report of the Subcommittee on Amphiboles of the International Mineralogical Association Commission on New Minerals and Mineral Names
Tập 61 Số 405 - Trang 295-310 - 1997
AbstractThe International Mineralogical Association's approved amphibole
nomenclature has been revised in order to simplify it, make it more consistent
with divisions generally at 50%, define prefixes and modifiers more precisely
and include new amphibole species discovered and named since 1978, when the
previous scheme was approved. The same reference axes form the basis of the new
scheme and mos...
A general equation for estimating Fe3+ concentrations in ferromagnesian silicates and oxides from microprobe analyses, using stoichiometric criteria
Tập 51 Số 361 - Trang 431-435 - 1987
AbstractA simple general equation is presented for estimating the Fe3+
concentrations in ferromagnesian oxide and silicate minerals from microprobe
analyses. The equation has been derived using stoichiometric criteria assuming
that iron is the only element present with variable valency and that oxygen is
the only anion. In general, the number of Fe3+ ions per X oxygens in the mineral
formula, F, i...
Unit cell refinement from powder diffraction data: the use of regression diagnostics
Tập 61 Số 404 - Trang 65-77 - 1997
AbstractWe discuss the use of regression diagnostics combined with nonlinear
least-squares to refine cell parameters from powder diffraction data, presenting
a method which minimizes residuals in the experimentally-determined quantity
(usually 2θhkl or energy, Ehkl). Regression diagnostics, particularly deletion
diagnostics, are invaluable in detection of outliers and influential data which
could ...
Mineral replacement reactions: from macroscopic observations to microscopic mechanisms
Tập 66 Số 5 - Trang 689-708 - 2002
AbstractMineral replacement reactions take place primarily by
dissolution-reprecipitation processes. Processes such as cation exchange,
chemical weathering, deuteric alteration, leaching, pseudomorphism,
metasomatism, diagenesis and metamorphism are all linked by common features in
which one mineral or mineral assemblage is replaced by a more stable assemblage.
The aim of this paper is to review s...
Chemistry of chromian spinel in volcanic rocks as a potential guide to magma chemistry
Tập 56 Số 383 - Trang 173-184 - 1992
AbstractChromian spinel in volcanic rocks is a potential discriminant for magma
chemistry. The TiO2 content of spinel, compared at similar Fe3+/(Cr + Al + Fe3+)
ratios, can distinguish island arc basalts from intraplate basalts. MORB spinels
are low in this ratio and are intermediate for the TiO2 level at comparable Fe3+
ratios. Spinels from back-arc basin basalts, although similar in TiO2/Fe3+
ra...
Crystal structures of some double hydroxide minerals
Tập 39 Số 304 - Trang 377-389 - 1973
Summary Three groups of minerals are discussed, which are typified by pyroaurite
and sjögrenitc, hydrocalumite, and ettringite. All show interesting structural
features. In the pyroaurite-sjögrenite group, brucite-likc layers carrying a net
positive charge alternate with layers in which the oxygen atoms of carbonate
groups and water molecules are statistically distributed on a single set of
sites;...
Atomic number and crystallographic contrast images with the SEM: a review of backscattered electron techniques
Tập 51 Số 359 - Trang 3-19 - 1987
AbstractBackscattered electrons (BSE) are incident electrons reflected back from
a target specimen and imaged with the scanning electron microscope (SEM). Three
distinct BSE signals exist: atomic number or Z-contrast, in which composition
determines image contrast; orientation contrast, in which specimen crystal
structure determines image contrast; and electron channelling patterns (ECP),
which ar...
The catalysis of mineral reactions by water and restrictions on the presence of aqueous fluid during metamorphism
Tập 50 Số 357 - Trang 399-415 - 1986
AbstractThe problems of characterizing inter-granular regions and of estimating
rates of intergranular diffusion in metamorphic rocks are discussed.
Inter-granular regions can be anhydrous, hydrated but under-saturated with H2O,
or saturated with H2O, but only in the latter case can a free aqueous fluid
phase be present. Estimates of intergranular diffusion coefficients (DIGR) at
550°C derived fro...
Diamond formation in the deep mantle: the record of mineral inclusions and their distribution in relation to mantle dehydration zones
Tập 74 Số 2 - Trang 189-215 - 2010
AbstractStudies of the inclusions contained in natural diamonds have shown the
occurrence of minerals which must have formed at depths below the lithosphere
and which may be closely matched with the silicate mineral assemblages
determined by high pressure and temperature experimental studies for depths of
300 to 800 km in the Earth's mantle. The inclusions come principally from two
main depth zone...
Arsenic hazard in shallow Cambodian groundwaters
Tập 69 Số 5 - Trang 807-823 - 2005
AbstractOur recent discovery of hazardous concentrations of arsenic in shallow
sedimentary aquifers in Cambodia raises the spectre of future deleterious health
impacts on a population that, particularly in non-urban areas, extensively use
untreated groundwater as a source of drinking water and, in some instances, as
irrigation water. We present here small-scale hazard maps for arsenic in shallow
C...