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magnesiohastingsite

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Journal Article
Published: 01 July 2006
European Journal of Mineralogy (2006) 18 (4): 503–508.
...Hans-Peter BOJAR; Franz WALTER Abstract The new mineral fluoro-magnesiohastingsite, ideally (Na,K,Ca)Ca 2 (Mg,Fe 3+ ,Al,Ti) 5 (Si,Al) 8 0 22 F 2 a member of the calcic-amphibole-group, occurs in small cavities of an altered hematite-rich xenolith in the quaternary trachyandesite at Dealul Uroi...
FIGURES
Journal Article
Published: 01 February 2004
The Canadian Mineralogist (2004) 42 (1): 1–16.
...Axel D. Renno; Leander Franz; Thomas Witzke; Peter M. Herzig Abstract Direct evidence for a Cu–Cl-salt-hydrate melt in equilibrium with a complex system of silicate melts was found in a xenolith of magnesiohastingsite-dominant cumulate from the TUBAF Seamount, near Lihir Island, in Papua New Guinea...
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Journal Article
Published: 01 December 2001
Mineralogical Magazine (2001) 65 (6): 787–795.
...M. Gaeta; C. Freda Abstract A magmatic calcic amphibole ( M4 Ca ≥ 1.50) characterized by large Sr and F contents (SrO>1 wt.%, F>2.5 wt.%) is described. According to the crystal-chemical formula, the amphibole can be classified as a strontian fluoro-magnesiohastingsite and the presence of Sr...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 01 February 1981
GSA Bulletin (1981) 92 (2_Part_II): 274–357.
... apparatus and the oxygen buffer method. Magnesiohastingsite, NaCa 2 Mg 4 Fe 3+ Si 6 Al 2 O 22 (OH) 2 , is stable over a wide range of, P and F O 2 conditions. Al-clinopyroxene + olivine + nepheline + spinel ± magnetite ± melt ± fluid, all of variable compositions, are produced upon dehydration...
Journal Article
Journal: GSA Bulletin
Published: 01 February 1981
GSA Bulletin (1981) 92 (2): 71–74.
Journal Article
Published: 01 June 1973
American Mineralogist (1973) 58 (5-6): 480–494.
...Michel P. Semet Abstract Mössbauer and infrared spectra of synthetic magnesiohastingsite (Mh), NaCa 2 Mg 4 Fe 3+ Si 6 Al 2 O 22 (OH) 2 , indicate that, except at high values of f O 2, Fe occurs both as Fe 2+ and Fe 3+ contrary to the ideal formula. The amount of Fe 2+ produced is a function...
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FTIR spectra of fluoro-<span class="search-highlight">magnesiohastingsite</span> from Dealul Uroi, Hunedoara dist...
Published: 01 July 2006
Fig. 2. FTIR spectra of fluoro-magnesiohastingsite from Dealul Uroi, Hunedoara district, Romania. The insert shows an enlargement of the near-infrared area. The (OH)-stretching bands of fluoro-magnesiohastingsite (a) are lacking in comparison with pargasite (b), Hunza-valley, Afghanistan
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Photomicrographs of some characteristic textures observed in silicate-rich ...
Published: 01 October 2002
), calcite (colorless) and magnesiohastingsite replacing the clinopyroxene (green to light yellow); (b) magnesiohastingsite (yellowish green) successively replaced by magnesiokatophorite plus richterite (lighter colored, more grayish) and clinochlore (colorless) along fractures; also note perovskite crystal
Journal Article
Published: 01 January 2006
American Mineralogist (2006) 91 (1): 73–81.
... evolution (kaersutite → Ti-pargasite → pargasite → Ti-magnesiohastingsitemagnesiohastingsite → edenite → tschermakite → magnesiohornblende) linked to magmatic differentiation from andesitic basalt to rhyolite; and (2) deuteritic alteration of the primary amphibole related to late-emplacement hydrothermal...
FIGURES | View All (6)
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Composition space Mg/(Mg+Fe tot ) - Si (apfu) of xenolithhosted fluoro-magn...
Published: 01 July 2006
Fig 3. Composition space Mg/(Mg+Fe tot ) - Si (apfu) of xenolithhosted fluoro-magnesiohastingsite and rock forming fluoro-amphiboles (assuming B Ca > 0.5; A (Na+K) > 0.5; Ti < 0.5) from Dealul Uroi, Romania. Tie lines and mineral names according to the Caamphibole scheme. The squares
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Fluoro-<span class="search-highlight">magnesiohastingsite</span> crystals from Dealul Uroi, Hunedoara district, R...
Published: 01 July 2006
Fig. 1. Fluoro-magnesiohastingsite crystals from Dealul Uroi, Hunedoara district, Romania, SEM photograph.
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Electron-microprobe analyses of fluoro-<span class="search-highlight">magnesiohastingsite</span> from Dealul Uroi...
Published: 01 July 2006
Table 1. Electron-microprobe analyses of fluoro-magnesiohastingsite from Dealul Uroi, Hunedoara district, Romania.
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X-ray powder diffraction data for fluoro-<span class="search-highlight">magnesiohastingsite</span>.
Published: 01 July 2006
Table 2. X-ray powder diffraction data for fluoro-magnesiohastingsite.
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Crystal data and experimental details for fluoro-<span class="search-highlight">magnesiohastingsite</span>.
Published: 01 July 2006
Table 3. Crystal data and experimental details for fluoro-magnesiohastingsite.
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A, B. Major-element plots showing the composition of <span class="search-highlight">magnesiohastingsite</span> ( ...
Published: 01 October 2005
F ig . 4. A, B. Major-element plots showing the composition of magnesiohastingsite ( VI Al < Fe 3+ , Leake et al. 1997 ) from the Boston Creek ferropicrite (BCF), consistent with an igneous origin. C. Major-element plot showing higher Fe 3+ content relative to Mg# for the igneous
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SELECTED COMPOSITIONS OF CALCIC AMPHIBOLE FROM THE <span class="search-highlight">MAGNESIOHASTINGSITE</span>-DOMI...
Published: 01 February 2004
TABLE 1. SELECTED COMPOSITIONS OF CALCIC AMPHIBOLE FROM THE MAGNESIOHASTINGSITE-DOMINANT CUMULATE, TUBAF SEAMOUNT, PAPUA NEW GUINEA
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Photomicrographs of deuterically altered gabbro, Coldwell complex, Ontario ...
Published: 01 October 2002
F ig . 14. Photomicrographs of deuterically altered gabbro, Coldwell complex, Ontario (crossed polars; width of the field of view is 5.5 mm for both images). (a) Diopside (left upper corner) replaced and mantled by zoned magnesiohastingsite (brown to olive-green); note spherulites of clinochlore
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Photomicrographs of deuterically altered gabbro, Coldwell complex, Ontario ...
Published: 01 October 2002
F ig . 14. Photomicrographs of deuterically altered gabbro, Coldwell complex, Ontario (crossed polars; width of the field of view is 5.5 mm for both images). (a) Diopside (left upper corner) replaced and mantled by zoned magnesiohastingsite (brown to olive-green); note spherulites of clinochlore
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Variation of major components ( apfu ) in the composition of amphibole-grou...
Published: 01 October 2002
F ig . 5. Variation of major components ( apfu ) in the composition of amphibole-group minerals from CAPR: large crystals of magnesiohastingsite (1), magnesiokatophorite and richterite replacing magnesiohastingsite (2), high-AZ (3), low-AZ (4) zones and richterite rims (5) in oscillatory-zoned
Journal Article
Published: 01 October 2005
The Canadian Mineralogist (2005) 43 (5): 1745–1758.
...F ig . 4. A, B. Major-element plots showing the composition of magnesiohastingsite ( VI Al < Fe 3+ , Leake et al. 1997 ) from the Boston Creek ferropicrite (BCF), consistent with an igneous origin. C. Major-element plot showing higher Fe 3+ content relative to Mg# for the igneous...
FIGURES | View All (10)