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ferrorichterite

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Book Chapter

Richterite–Ferrorichterite(Na,K)CaNa(Mg,Al,Fe 2+ ,Mn) 5 [Si 8 O 22 ](OH) 2 : Magnesiokatophorite–Katophorite (Na,K)CaNa(Mg,Fe 2+ ) 4 Al[Si 7 AlO 22 ](OH) 2

Author(s)
W. A. Deer, FRS, R. A. Howie, J. Zussman
Book: An Introduction to the Rock-Forming Minerals
Publisher: Mineralogical Society of Great Britain and Ireland
Published: 01 January 2013
EISBN: 9780903056434
... richterite is NaCaNaMg 5 Si 8 O 22 (OH) 2 and the principal variations are the isovalent substitution of Fe 2+ for Mg and the coupled substitution of Al for Mg and Si. In the richterite subgroup of sodium-calcium amphiboles we have therefore: Some richterite—ferrorichterites contain more calcium...
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Journal Article

Crystal structure and Mössbauer spectroscopy of the synthetic amphibole potassic-ferri-ferrorichterite at 298 K and low temperatures (80–110 K)

Günther J. REDHAMMER, Georg ROTH
Published: 01 January 2002
European Journal of Mineralogy (2002) 14 (1): 105–114.
DOI: https://doi.org/10.1127/0935-1221/2002/0014-0105
...Günther J. REDHAMMER; Georg ROTH Abstract The crystal structure of a synthetic potassic-ferri-ferrorichterite, ideally K(Ca 0.5 Na 1.5 )Fe 5 Si 8 O 22 (OH) 2 was refined from single-crystal X-ray imaging plate diffraction data at 298 K and 110 K. The title compound is monoclinic, S.G. C 2/ m , Z...
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Journal Article

The Phase equilibria of richterite and ferrorichterite

Robert W. Charles
Published: 01 June 1975
American Mineralogist (1975) 60 (5-6_Part_1): 367–374.
...Robert W. Charles Abstract The phase relations of the amphiboles richterite and ferrorichterite have been defined using standard hydrothermal and oxygen buffering techniques. R ichterite is stable to 1030° ± 10°C at 1 kbar P total . Above 150 bars richterite decomposes to forsterite + diopside...
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Microphotographs and back-scattered-electron images of representative sodic...

Microphotographs and back-scattered-electron images of representative sodic...

Published: 01 January 2007
Fig. 4. Microphotographs and back-scattered-electron images of representative sodic and sodic-calcic amphibole crystals showing relationships between amphiboles and the location of analyses of Table 2 . Symbols as in Fig. 3 . (a) primary ferrorichterite 3 with patches of late-stage replacement
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Backscattered electron images taken from the peralkaline granitoids. (a) GS...

Backscattered electron images taken from the peralkaline granitoids. (a) GS...

Published: 01 January 2011
ferrorichterite with zircon, ilmenite and apatite inclusions surrounded by alkali feldspar. (d) GS04-016 (Baima) showing titanite, ferrorichterite and zircons surrounded by alkali feldspar. (e) GS03-011[A] (Panzhihua) showing aenigmatite surrounded by ferrorichterite. (f) GS03-007[A] (Panzhihua) a typical
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Cell dimensions of synthetic potassic-ferri-<span class="search-highlight">ferrorichterite</span> from powder X-r...

Cell dimensions of synthetic potassic-ferri-ferrorichterite from powder X-r...

Published: 01 January 2002
Table 3. Cell dimensions of synthetic potassic-ferri-ferrorichterite from powder X-ray diffraction at 298 K.
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Crystal and structure refinement data for potassic-ferri-<span class="search-highlight">ferrorichterite</span>

Crystal and structure refinement data for potassic-ferri-ferrorichterite

Published: 01 January 2002
Table 4. Crystal and structure refinement data for potassic-ferri-ferrorichterite
Journal Article

THE DIVERSITY AND OCCURRENCE OF POTASSIUM-DOMINANT AMPHIBOLES

Frank K. Mazdab
Published: 01 December 2003
The Canadian Mineralogist (2003) 41 (6): 1329–1344.
DOI: https://doi.org/10.2113/gscanmin.41.6.1329
...”, “potassic-ferropargasite”, “potassic-chloro-ferropargasite”, “potassic-aluminosadanagaite”, “potassic-chlorosadanagaite”, “potassic-chloro-ferro-edenite”, “potassicrichterite”, “potassic-ferrorichterite”, “potassic-fluoro-magnesiokatophorite”, “potassic-ferritaramite”, “potassic-magnesio-arfvedsonite...
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57 Fe Mössbauer fit parameter for thickness - corrected spectra of synthet...

57 Fe Mössbauer fit parameter for thickness - corrected spectra of synthet...

Published: 01 January 2002
Table 2a. 57 Fe Mössbauer fit parameter for thickness - corrected spectra of synthetic potassic-ferri-ferrorichterites samples Ri1, Ri10 and Ri15 at 298 K and 80 K (Ri1).
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Selected interatomic distances [Å&gt; and angles [°] in synthetic potassic...

Selected interatomic distances [Å> and angles [°] in synthetic potassic...

Published: 01 January 2002
Table 6. Selected interatomic distances [Å> and angles [°] in synthetic potassic-ferri-ferrorichterite Ri 1 (298 K, 110 K) and Ri 15 (298 K). Estimated standard deviations are smaller than 0.003 Å for bond lengths and 0.09° for bond angles.
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Selected interatomic distances [Å&gt; and angles [°] in synthetic potassic...

Selected interatomic distances [Å> and angles [°] in synthetic potassic...

Published: 01 January 2002
Table 6. Selected interatomic distances [Å> and angles [°] in synthetic potassic-ferri-ferrorichterite Ri 1 (298 K, 110 K) and Ri 15 (298 K). Estimated standard deviations are smaller than 0.003 Å for bond lengths and 0.09° for bond angles.
Journal Article

Relationship of amphibole composition to host-rock geochemistry: the A-type gabbro-granite Wentworth pluton, Cobequid shear zone, eastern Canada

Georgia Pe-Piper
Published: 01 January 2007
European Journal of Mineralogy (2007) 19 (1): 29–38.
DOI: https://doi.org/10.1127/0935-1221/2007/0019-0029
...Fig. 4. Microphotographs and back-scattered-electron images of representative sodic and sodic-calcic amphibole crystals showing relationships between amphiboles and the location of analyses of Table 2 . Symbols as in Fig. 3 . (a) primary ferrorichterite 3 with patches of late-stage replacement...
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Subdivision of richterites from GS03-097 and <span class="search-highlight">ferrorichterites</span> from the Panz...

Subdivision of richterites from GS03-097 and ferrorichterites from the Panz...

Published: 01 January 2011
Fig. 4. Subdivision of richterites from GS03-097 and ferrorichterites from the Panzhihua, Taihe and Baima plutons using (a) Mg (apfu) versus Fe 2+ + Fe 3+ (apfu), and the sodic-calcic amphiboles from the sodic amphiboles using (b) Ti (apfu) versus Fe 2+ + Fe 3+ (apfu).
Journal Article

Mineralogy from three peralkaline granitic plutons of the Late Permian Emeishan large igneous province (SW China): evidence for contrasting magmatic conditions of A-type granitoids

J. Gregory Shellnutt, Yoshiyuki Iizuka
Published: 01 January 2011
European Journal of Mineralogy (2011) 23 (1): 45–61.
DOI: https://doi.org/10.1127/0935-1221/2010/0022-2073
... ferrorichterite with zircon, ilmenite and apatite inclusions surrounded by alkali feldspar. (d) GS04-016 (Baima) showing titanite, ferrorichterite and zircons surrounded by alkali feldspar. (e) GS03-011[A] (Panzhihua) showing aenigmatite surrounded by ferrorichterite. (f) GS03-007[A] (Panzhihua) a typical...
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Journal Article

STRONTIOFLUORITE, SrF 2 , A NEW MINERAL SPECIES FROM THE KHIBINY MASSIF, KOLA PENINSULA, RUSSIA

Victor N. Yakovenchuk, Gregory Yu. Ivanyuk, Yakov A. Pakhomovsky, Ekaterina A. Selivanova, Julia A. Korchak, Alexander P. Nikolaev
Published: 01 December 2010
The Canadian Mineralogist (2010) 48 (6): 1487–1492.
DOI: https://doi.org/10.3749/canmin.48.6.1487
... lenticular inclusions up to 0.2 mm in length in natrolite and albite associated with orthoclase, nepheline, ferrorichterite, aegirine, lamprophyllite, lorenzenite, stronadelphite and an as-yet unnamed phase of composition Sr 2 PO 4 F. Strontiofluorite is translucent, pale grey, with a greasy luster...
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Petrogenesis of anorogenic peralkaline granitic complexes from eastern Egypt

A. M. Abdel-Rahman
Published: 01 February 2006
Mineralogical Magazine (2006) 70 (1): 27–50.
DOI: https://doi.org/10.1180/0026461067010311
... are made up of hypersolvus peralkaline granites, consisting essentially of perthitic alkali feldspar (55–65 vol.%), quartz (30–35%), and alkali amphibole (ferrorichterite to arfvedsonite; 5–12%), with accessory zircon, apatite and ilmenite. The rocks are evolved in composition, are relatively enriched...
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Journal Article

Unusual Ti and Zr aegirine-augite and potassic magnesio-arfvedsonite in the peralkaline potassic oversaturated Buhovo-Seslavtzi complex, Bulgaria

Momchil M. DYULGEROV, Bernard PLATEVOET
Published: 01 January 2006
European Journal of Mineralogy (2006) 18 (1): 127–138.
DOI: https://doi.org/10.1127/0935-1221/2006/0018-0127
... conditions, whereas Zr enters aegirine-augite in mildly agpaitic conditions. Composition of sodic-calcic and sodic amphiboles evolves through ferrowinchite, ferrorichterite, richterite toward magnesio-arfvedsonite. Evolution ends with crystallization of potassic magnesio-arfvedsonite, which contains up...
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VARIATION IN MINERALOGY, TEMPERATURE, AND OXYGEN FUGACITY IN A SUITE OF STRONGLY PERALKALINE LAVAS AND TUFFS, PANTELLERIA, ITALY

John Charles White, Minghua Ren, Don F. Parker
Published: 01 August 2005
The Canadian Mineralogist (2005) 43 (4): 1331–1347.
DOI: https://doi.org/10.2113/gscanmin.43.4.1331
... ± ferrorichterite, and (5) aegirine-augite + aenigmatite + quartz. Alkali feldspar (Or 35–37 ) is present as the dominant phyric phase in each assemblage. Whole-rock silica and peralkalinity correlate strongly with the mineral assemblage: assemblage 1 is found in the sample with the lowest agpaitic index [A.I...
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The mafic mineralogy of the Pandé massif, Tikar plain, Cameroon: implications for a peralkaline affinity and emplacement from highly evolved alkaline magma

E. Njonfang, C. Moreau
Published: 01 June 2000
Mineralogical Magazine (2000) 64 (3): 525–537.
... are drusy, intrude the first volcanic sequence but pre-date the second (T2). All the mafic minerals are Fe-rich. Detailed studies of amphibole and pyroxene show that their compositions define relatively limited trends, amphibole varying from ferrorichterite to arfvedsonite and pyroxenes along the acmite...
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Petrogenesis of the Sugarloaf syenite, Pikes Peak batholith, Colorado

Rachel Beane, Reinhard A. Wobus
Published: 01 January 1999
Rocky Mountain Geology (1999) 34 (2): 313–324.
DOI: https://doi.org/10.2113/34.2.313
..., medium-grained, coarse-grained, and pegmatitic syenite. The syenites lack quartz and are dominated by perthitic feldspar and ferrorichterite amphibole. The fine-grained syenite intrudes the medium- and coarse-grained syenites. The Sugarloaf pluton is surrounded by coarse-grained Pikes Peak Granite, which...
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