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strunzite

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Journal Article
Published: 01 October 2017
Mineralogical Magazine (2017) 81 (5): 1051–1062.
...I. E. Grey; E. Keck; C. M. MacRae; A. M. Glenn; A. R. Kampf; B. P. Nash; S. J. Mills Abstract A comparative study is presented of the chemistry and crystallography of zinc-bearing strunzites from Hagendorf Süd, Bavaria, Germany and the Sitio do Castelo mine, Folgosinho, Portugal. Electron...
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Journal Article
Published: 01 April 2018
Mineralogical Magazine (2018) 82 (2): 291–299.
...Ian E. Grey; Anthony R. Kampf ABSTRACT The crystal structures have been refined for the first time for the strunzite-group minerals ferristrunzite and ferrostrunzite. Structure refinements are also presented for strunzite from three different localities. A common feature of all refined structural...
FIGURES
Journal Article
Published: 01 August 2013
American Mineralogist (2013) 98 (8-9): 1497–1507.
...Antoine Van Alboom; Eddy De Grave Abstract The temperature variations of the ferric and ferrous hyperfine fields in natural samples of strunzite, ferristrunzite, and ferrostrunzite are examined by Mössbauer spectroscopy between 4.2 K and their respective magnetic transition temperatures...
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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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Image
The crystal structures of <b>strunzite</b> and metavauxite: (a) <b>strunzite</b> projecte...
Published: 01 January 2002
Figure 28. The crystal structures of strunzite and metavauxite: (a) strunzite projected onto (100); (b) strunzite projected onto (001); (Fe 3+ ϕ 6 ) octahedra are dot-shaded; (c) metavauxite projected onto (100); (d) metavauxite projected onto (001); (Alϕ 6 ) octahedra are 4 4 -net-shaded
Journal Article
Published: 01 May 2017
European Journal of Mineralogy (2017) 29 (2): 315–322.
... to R 1 =0.0715 for 3243 observed reflections [ F o > 4σ F ] for a crystal from Sitio do Castelo. The mineral is isostructural with other members of the strunzite group, except for an additional split H 2 O site near the (½,0,0) centre of symmetry, which accounts for the additional 0.5 H 2 O...
Journal Article
Published: 01 October 2008
The Canadian Mineralogist (2008) 46 (5): 1131–1157.
...-bearing rockbridgeite, mitridatite, “metamitridatite”, kolbeckite and strunzite appear during late hydrothermal processes and weathering. Kolbeckite formed at the transition from hypogene to supergene processes. Its morphology varies from a rather simple combination of faces (platy kolbeckite I) under...
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Analytical data (wt.%) for <b>strunzite</b> samples.          Ferrostrunzite New J...
Published: 01 April 2018
Table 1. Analytical data (wt.%) for strunzite samples. Ferrostrunzite New Jersey Av. of 7 spots Strunzite Hagendorf Süd Av. of 7 spots Strunzite Lord Hill Av. of 8 spots Strunzite Big Chief Av. of 6 spots Probe standard MnO 0 10.3 12.7 10.8 rhodonite MgO 0.12 0.80
Image
Plot of Mn apfu  vs . Fe + Zn apfu using EMP data for Zn-bearing <b>strunzite</b> ...
Published: 01 October 2017
Fig. 4. Plot of Mn apfu vs . Fe + Zn apfu using EMP data for Zn-bearing strunzite and zincostrunzite from Sitio do Castelo, Portugal.
Image
Part of the crystallographic structure of <b>strunzite</b> viewed along the  c  ax...
Published: 01 August 2013
Figure 1 Part of the crystallographic structure of strunzite viewed along the c axis (adapted from Fanfani et al. 1978 ). (Color online.)
Image
Mössbauer thermoscanning curves of the three <b>strunzite</b> varieties.
Published: 01 August 2013
Figure 2 Mössbauer thermoscanning curves of the three strunzite varieties.
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Experimental and calculated MS for <b>strunzite</b> at selected temperatures. S1 =...
Published: 01 August 2013
Figure 4 Experimental and calculated MS for strunzite at selected temperatures. S1 = blue; S2 = purple; S3 = magenta; D1 = orange; D2 = pink; calculated MS = red. Parameters are in Table 2 . (Color online.)
Image
Polyhedral representation of the <b>strunzite</b> structure, projected along [001]...
Published: 01 October 2012
F ig . 2. Polyhedral representation of the strunzite structure, projected along [001].
Image
An (010) slice through the <b>strunzite</b> structure, showing the H-bonding arran...
Published: 01 October 2012
F ig . 3. An (010) slice through the strunzite structure, showing the H-bonding arrangement.
Image
The crystal structure of <b>strunzite</b>-type minerals, (001) projection. In ferr...
Published: 01 June 2012
F ig . 9. The crystal structure of strunzite-type minerals, (001) projection. In ferrostrunzite, the Fe3-octahedron is occupied predominantly by Fe 2+ .
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Heteropolyhedral layer in the structures of <b>strunzite</b> and ferrostrunzite.
Published: 01 June 2012
F ig . 10. Heteropolyhedral layer in the structures of strunzite and ferrostrunzite.
Image
( a ) An SEM image showing jahnsite (J) associated with Al-bearing <b>strunzit</b>...
Published: 01 October 2012
F ig . 1. ( a ) An SEM image showing jahnsite (J) associated with Al-bearing strunzite (S). ( b ) An SEM image showing the development of strunzite fibres from jahnsite.
Journal Article
Published: 01 December 1965
American Mineralogist (1965) 50 (11-12): 1884–1892.
... and cell dimensions. Two such structures may be represented in the polymorphs strunzite and stewartite. 3 2 1965 25 6 1965 Copyright © 1965 by the Mineralogical Society of America 1965 Mineralogical Society of America ...
Journal Article
Published: 01 August 1963
American Mineralogist (1963) 48 (7-8): 913–914.
... substances. Accordingly, the unit cell has been reinvestigated. Crystals of stewartite from the Palermo and Fletcher quarries, N. Groton, N. H., were used in this investigation. The stewartite from the Palermo quarry occurs as radiating groups of small yellow crystals associated with strunzite, laueite...
Journal Article
Published: 01 June 1958
American Mineralogist (1958) 43 (5-6): 609–615.
.... The accompanying table may be considered as an extension of Table 7 of the original paper; all these minerals are there listed in Table 8, except for the recently described hydrous Fe-Mn phosphate strunzite, known as fibrous emplacements in cavities from New Hampshire, Maine and Bavaria. Samples A, C–E, G and H...