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zwieselite

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Journal Article
Published: 01 April 2014
The Canadian Mineralogist (2014) 52 (2): 321–335.
... quartz-rich dikes. A comprehensive textural and geochemical characterization of primary phosphate minerals belonging to the triplite-zwieselite, triphylite-lithiophilite, and graftonite-beusite series has been done. Chemical data, including major and trace elements contents, have been obtained...
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Structure of triplite&#x2F;<b>zwieselite</b> ( Rea &amp;amp; Kostiner, 1972 ;  Yakubovich  ...
Published: 01 August 2014
Fig. 2 Structure of triplite/zwieselite ( Rea & Kostiner, 1972 ; Yakubovich et al. , 1978 ) in I 2/ a setting ( Table 1 ), projected along a . Only PO 4 moieties are displayed as tetrahedra. Large spheres represent octahedral M1 (light green) and M2 (dark green) positions, small spheres
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F  versus  Mn&#x2F;(Mn+Fe) for triplite, triploidite, wolfeite, and <b>zwieselite</b> r...
Published: 01 April 2014
Fig. 1 F versus Mn/(Mn+Fe) for triplite, triploidite, wolfeite, and zwieselite reported in the literature. The star represents the triplite from the Codera Valley.
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Compact, off-white nordgauite in altered pinkish <b>zwieselite</b>–triplite. The m...
Published: 01 April 2011
F ig . 1. Compact, off-white nordgauite in altered pinkish zwieselite–triplite. The main mass is 10 mm across. Note the thin white fibrous rims around the edge of the mass (co-type specimen M51231 ).
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BSE image of whiteite and jahnsite in contact with <b>zwieselite</b>-triplite (Z) ...
Published: 01 December 2010
F ig . 4. BSE image of whiteite and jahnsite in contact with zwieselite-triplite (Z) and apatite (Ap).
Journal Article
Published: 01 May 2019
European Journal of Mineralogy (2019) 31 (3): 647–652.
... with altered triplite–zwieselite and whiteite-(CaMnMn). The measured density (Foote mine) is 2.58(2) g cm −3 . Optically, fanfaniite (Foote mine) is biaxial (–), with α = 1.573(2), β = 1.582(2), γ = 1.585(2) and 2 V (meas) = 57(1)°. Dispersion was not observed. The optical orientation is: Z = b , X ^ c ≈ 40...
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Journal Article
Published: 01 May 2017
European Journal of Mineralogy (2017) 29 (2): 315–322.
... in Germany. At Sitio do Castelo, zincostrunzite was derived from the alteration of triplite–zwieselite. At Hagendorf-Süd, it was found in a nodule of former triphylite that had been replaced by phosphophyllite and minor apatite. At Sitio do Castelo, zincostrunzite occurs as prisms up to 2 mm long...
Journal Article
Published: 01 December 2012
Mineralogical Magazine (2012) 76 (7): 2761–2771.
...). The mineral was found in the Hagendorf Süd granitic pegmatite (Germany) as small (up to 0.5 mm in size) crystals elongated on a and tabular on {010}. The crystals are either simply or polysynthetically twinned on {001}. They crystallize on the walls of voids within altered zwieselite crystals or form coronas...
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Journal Article
Published: 01 October 2012
Mineralogical Magazine (2012) 76 (5): 1165–1174.
...I. E. Grey; C. M. Macrae; E. Keck; W. D. Birch Abstract Aluminium-bearing strunzite, [Mn 0.65 Fe 0.26 Zn 0.08 Mg 0.01 ] 2+ [Fe 1.50 Al 0.50 ] 3+ (PO 4 ) 2 (OH) 2 ·6H 2 O, occurs as fibrous aggregates in a crystallographically oriented association with jahnsite on altered zwieselite samples from...
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Journal Article
Published: 01 February 2012
Mineralogical Magazine (2012) 76 (1): 1–24.
... fractures to form the Cruz del Rayo field of pegmatite dykes, which are hosted by pre-Ordovician low-grade metasedimentary rocks. The increasing activity of phosphorus as magmatic differentiation took place led to the crystallization of primary phosphates, including members of the triplite–zwieselite...
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Journal Article
Published: 01 April 2011
Mineralogical Magazine (2011) 75 (2): 269–278.
...F ig . 1. Compact, off-white nordgauite in altered pinkish zwieselite–triplite. The main mass is 10 mm across. Note the thin white fibrous rims around the edge of the mass (co-type specimen M51231 ). ...
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Journal Article
Published: 01 December 2010
Mineralogical Magazine (2010) 74 (6): 969–978.
...F ig . 4. BSE image of whiteite and jahnsite in contact with zwieselite-triplite (Z) and apatite (Ap). ...
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Journal Article
Published: 01 August 1972
American Mineralogist (1972) 57 (7-8): 1109–1114.
...Edward Kostiner Abstract Mossbauer 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...
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Analyzed element concentrations for (a) triphylite-litiophilite, (b) tripli...
Published: 01 April 2014
Fig. 2 Analyzed element concentrations for (a) triphylite-litiophilite, (b) triplite-zwieselite, and (c) graftonite-beusite, normalized to Total Continental Crust ( Rudnick & Fountain 1995 ). Some elements, mainly in samples of graftonite-beusite from the Cema pegmatite, are below detection
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Plot of Nb  versus  (a) Ta, (b) U, (c) Zr, (d) Hf, (e) ΣLREE, (f) Li, and (...
Published: 01 April 2014
Fig. 3 Plot of Nb versus (a) Ta, (b) U, (c) Zr, (d) Hf, (e) ΣLREE, (f) Li, and (g) Zn; and (h) plot of Zr versus Hf ( apfu ) for members of the triplite-zwieselite series associated with different pegmatites.
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Photomicrographs of the main textures presented by the primary phosphate mi...
Published: 01 April 2014
Fig. 1 Photomicrographs of the main textures presented by the primary phosphate minerals studied in this work: (a) fresh triplite crystals from the El Criollo pegmatite, with a massive texture, showing locally numerous inclusions, crossed polars; (b) zwieselite crystals partly replaced
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Time-dependent F K α, P K α, and Mn K α X-ray intensities emitted from a cr...
Published: 01 April 2006
F igure 3. Time-dependent F K α, P K α, and Mn K α X-ray intensities emitted from a crystal of zwieselite-triplite. Phosphorus and Mn are the most abundant cations of the crystal. Intensities for the three elements are normalized to the relevant zero time values as deduced from a third-order
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Configuration of F sites in wagnerite- Ma 5 bc , wagnerite- Ma 2 bc , magio...
Published: 01 April 2003
F ig . 9. Configuration of F sites in wagnerite- Ma 5 bc , wagnerite- Ma 2 bc , magiotriplite and synthetic end-member zwieselite, Fe 2 PO 4 F (n.b.: c in triplite-group minerals corresponds to a in wagnerite- Ma 5 bc and wagnerite- Ma 2 bc ), based on data from this paper, Coda et al
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F K α X-ray intensity emitted from several fragments of unknown orientation...
Published: 01 April 2006
) clearly apparent on the crystal surface after 600 s beam exposure. Triangles = no or diffuse beam imprint. Squares = intermediate situation. ( b ) Two crystals of zwieselite-triplite (Mn- and Fe-rich). Diamonds = dark beam imprint (beam browning). Squares = diffuse beam imprint. Third-order polynomials
Journal Article
Published: 01 April 2006
American Mineralogist (2006) 91 (4): 503–510.
...F igure 3. Time-dependent F K α, P K α, and Mn K α X-ray intensities emitted from a crystal of zwieselite-triplite. Phosphorus and Mn are the most abundant cations of the crystal. Intensities for the three elements are normalized to the relevant zero time values as deduced from a third-order...
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