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Although the term acmite has generally been adopted to describe the NaFe3 +
Si206 'molecule', both aegirine and acmite have been used for pyroxenes of
approximately this composition. Aegirine is generally restricted to the green to
black ...
William Alexander Deer, Robert Andrew Howie, J. Zussman, 1997
fO, for the join diopside-acmite with 20 wt% NaAlSiO4 added. Liquidus lines for
wiistite and clinopyroxene crossed at ~1160°C and composition Di:4Ne20Ac%.
In diopside-rich regions phase relations were complex; olivine appeared as a ...
William Alexander Deer, Robert Andrew Howie, 2004
3
The Data of Geochemistry
Under those conditions acmite was formed. He also obtained it by fusing a leucite
phonolite and subjecting the glass to a similar, very slow devitrification. Z.
Weyberg 2 also obtained acmite by fusing a mixture of the composition 2SiO2 + ...
Frank Wigglesworth Clarke, 1920
ficial mixture of the oxides, obtained some acmite. H. Bikkstrom 1 fused silica,
forric oxide, and sodium carbonate, mingled in the proper proportions, together
and held the solidified mixture at a dull red heat for three days. Under those ...
5
U.S. Geological Survey Professional Paper
Analogues of Hawaiian lavas. I. o ZrOj, 0.16; S, 0.02; SrO, 0.03. l, CI, 0.28. 1.
Soda trachyte, nordmarkose, I'.5.1'.4. Cone near Lahaina, west coast of Maui (p.
27). a. Biotite tinguaite (Eakle). Gales Point, Essex County, Mass. b. Acmite
trachyte ...
6
Geological Survey Professional Paper
The pyroxene from the nepheline syenite appears to have more iron, probably
partly in acmite, than those of the other igneous rocks. It is not very different
optically from the pyroxene of the nepheline-feldspar pyroxenite. Its optical
properties ...
Geological Survey (U.S.), 1942
7
Igneous Rocks: Composition, Texture and Classification, ...
This is shown in beemerose, 1.6.1.3, Table 46, in which the aphanites are ieucite
-phonolites and leucite-tinguaites. There is no chemical distinction between the
phonolites and tinguaites in Шт cases; no indication of acmite in the norms, but of
...
8
Mind Over Magma: The Story of Igneous Petrology
The problem was relatively easy to solve in their first collaborative venture on the
melting relations of acmite (Bowen and Schairer, 1929), a mineral in which all the
iron is trivalent. The highly oxidizing conditions required to guarantee the ...
9
Silicate Glasses and Melts: Properties and Structure
Acm: acmite (NaFeSiZOG); Hem: Hem- hematite (Fe3O4); L: liquid; Q: quartz and
Tr: . t AC"? tridymite (8102). Similar liquidus relationships are 800 T QI Am 7
observed for the sodium disilicate-acmite system, with a eutectic point at 810°C
and ...
B. Mysen, P. Richet, 2005
10
Handbook of Physical Constants
Fe2O3Na2O4SiO2: Acmite, In. i. to Fe2O3 and liqd. (14.7% Маю, 25.8% Fe2O3,
eut. With N32S1205 810, 5Ыа20'Р8203°88102 Fe2O3~5Na2O88102z artif. only,
may occur in nature, In. 838; eut. with Na2Si203 818; eut. with Na2S103 837; ...
Francis Birch, John Frank Schairer, Herbert Cecil Spicer, 1950
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The worldwide market for such devices reached estimated at $14.8 billion in 2013, according to Acmite Market Intelligence, which said it ... «TechWeekEurope UK, 5월 15»
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