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ardennite

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Journal Article
Published: 01 July 2007
European Journal of Mineralogy (2007) 19 (4): 581–587.
...Antonello A. Barresi; Paolo Orlandi; Marco Pasero Abstract Ardennite-(V), ideally Mn 4 [Al 4 (AlMg)][Si 5 V]O 22 (OH) 6 , is the analogue of ardennite, ideally Mn 4 [Al 4 (AlMg)][Si 5 As]O 22 (OH) 6 , with V dominant at the T4 site. The history of the discovery of ardennite is outlined...
FIGURES
Journal Article
Published: 01 June 2017
European Journal of Mineralogy (2017) 29 (3): 473–489.
...Rainer Altherr; Christian Soder; Hans-Peter Meyer; Thomas Ludwig; Marcel Böhm Abstract: A new occurrence of ardennite near Vitolište in the southernmost Republic of Macedonia (FYROM) is described. In the westernmost Vardar zone, a high- P / T metamorphic conglomerate contains reddish clasts (up...
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Journal Article
Published: 05 April 2017
European Journal of Mineralogy (2017) 29 (5): 907–914.
...Anthony R. Kampf; Cristina Carbone; Donato Belmonte; Barbara P. Nash; Luigi Chiappino; Fabrizio Castellaro Alpeite (IMA2016-072), Ca 4 Mn 3+ 2 Al 2 (Mn 3+ Mg)(SiO 4 ) 2 (Si 3 O 10 )(V 5+ O 4 )(OH) 6 , is a new member of the ardennite group from the Monte Alpe mine, Liguria, Italy. It crystallized...
FIGURES
Journal Article
Published: 01 February 2010
Mineralogical Magazine (2010) 74 (1): 55–71.
...M. Nagashima; T. Armbruster Abstract Several silicate-minerals, such as ardennite - \batchmode \documentclass[fleqn,10pt,legalpaper]{article} \usepackage{amssymb} \usepackage{amsfonts} \usepackage{amsmath} \pagestyle{empty} \begin{document} \(\mathrm{Mn}_{4}^{2+}\) \end{document} MgAl 5 [Si 5 (As 5...
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Journal Article
Published: 01 October 1991
European Journal of Mineralogy (1991) 3 (5): 819–830.
Journal Article
Published: 01 June 1965
The Canadian Mineralogist (1965) 8 (2): 262–265.
Image
Back-scattered electron images of ardennite-bearing sample M130b: (a) Epidote with secondary piemontite (lighter veins) and ardennite-(V) (on the left side of epidote), both surrounded by phyllosilicates, quartz and hematite. (b) Epidote (Ep) (free of hematite) and ‘ardennite-(V,Si)’ (Ard) rich in hematite inclusions within a matrix of phyllosilicates, hematite and minor quartz. (c) Clast rich in epidote in the centre within other clasts of quartz. (d) Inclusions of cookeite (Cook) and pyrophyllite (Prl) within ‘ardennite-(V,Si)’. (e) Inclusions of cookeite, pyrophyllite, quartz and rutile (Rt) within ardennite-(V). (f) Inclusion of quartz and cookeite in ardennite. ‘Ardennite-(Si)’ is visible on the left side (greyish) between ‘ardennite-(V,Si)’ and cookeite + quartz (see Fig. 4).
Published: 01 June 2017
Fig. 3 Back-scattered electron images of ardennite-bearing sample M130b: (a) Epidote with secondary piemontite (lighter veins) and ardennite-(V) (on the left side of epidote), both surrounded by phyllosilicates, quartz and hematite. (b) Epidote (Ep) (free of hematite) and ‘ardennite-(V,Si)’ (Ard
Image
(a) Variation of phosphorus and vanadium at the T4 site of ardennites in sample M130b. (b) Variation of P and V in ardennites of samples M404, M405 and M408. (c) Variation of P and Si at T4 in ardennite of sample M130b and of samples M404, M405 and M408 (d). (e) and (f) Variation of Mg at the M3 site with (V + As + P) at the T4 site in ardennites.
Published: 01 June 2017
Fig. 6 (a) Variation of phosphorus and vanadium at the T4 site of ardennites in sample M130b. (b) Variation of P and V in ardennites of samples M404, M405 and M408. (c) Variation of P and Si at T4 in ardennite of sample M130b and of samples M404, M405 and M408 (d). (e) and (f) Variation of Mg
Image
X-ray maps (Mg, Mn, V, Si, P, O) of ardennite-(V), ‘ardennite-(V,Si)’ and ‘ardennite-(Si)’ of sample M130b showing the textural relationships between these phases.
Published: 01 June 2017
Fig. 4 X-ray maps (Mg, Mn, V, Si, P, O) of ardennite-(V), ‘ardennite-(V,Si)’ and ‘ardennite-(Si)’ of sample M130b showing the textural relationships between these phases.
Image
Triangular diagram As–V–(S + Al + P) with the occupation of the T4 site of ardennite. (a) Three groups of ardennite compositions are present in sample M130b. See text for further explanation. (b) Ardennite compositions in samples M404, M405 and M408.
Published: 01 June 2017
Fig. 5 Triangular diagram As–V–(S + Al + P) with the occupation of the T4 site of ardennite. (a) Three groups of ardennite compositions are present in sample M130b. See text for further explanation. (b) Ardennite compositions in samples M404, M405 and M408.
Image
(a) Photograph of meta-conglomerate with clasts of quartz/quartzite (white), quartz–muscovite schist (grey) and Mn–Fe–V-rich rocks (red and dark brownish red). (b) ‘Ardennite-(V,Si)’ crystal surrounded by phengite, sudoite, pyrophyllite and cookeite (photomicrograph in plane-polarized light, PPL). (c) Hematite (dark), ‘ardennite-(V,Si)’ (yellow) in a matrix of quartz and phyllosilicates (white) and some piemontite (pink) (photomicrograph, PPL). (d) Hematite (black), ‘ardennite-(V,Si)’ (yellow), phyllosilicates (white) and piemontite (pink) (photomicrograph, PPL). (e) Crystals of ardennite-(V) and epidote (Ep) within a fine-grained matrix of quartz, phyllosilicates and hematite (small white grains), back-scattered electron (BSE) image. (f) Ardennite-(V) (light grey with hematite inclusions) and epidote/piemontite (Ep/Pmt) without inclusions within a matrix of hematite and quartz (BSE image).
Published: 01 June 2017
Fig. 2 (a) Photograph of meta-conglomerate with clasts of quartz/quartzite (white), quartz–muscovite schist (grey) and Mn–Fe–V-rich rocks (red and dark brownish red). (b) ‘Ardennite-(V,Si)’ crystal surrounded by phengite, sudoite, pyrophyllite and cookeite (photomicrograph in plane-polarized
Image
Polyhedral labelling in the crystal structure of ardennite (half unit cell view along [010]). For ardennite-(V) it is: A1, A2 = Mn2+ ; M1, M2 = Al; M3 = Al0.5Mg0.5; T1, T2, T3 = Si; T4 = V5+ .
Published: 01 July 2007
Fig. 1. Polyhedral labelling in the crystal structure of ardennite (half unit cell view along [010]). For ardennite-(V) it is: A1, A2 = Mn 2+ ; M1, M2 = Al; M3 = Al 0.5 Mg 0.5 ; T1, T2, T3 = Si; T4 = V 5+ .
Image
Variation of Σ(As+V+P) content as a function of Si content in ardennite (a), tiragalloite (b) and medaite (c). The chemical composition of ardennite-(V) reported by Barresi et al. (2007) was re-normalized to a cation sum = 16. Associated errors of data points are considerable smaller than the symbols.
Published: 01 February 2010
F ig . 2. Variation of Σ(As+V+P) content as a function of Si content in ardennite ( a ), tiragalloite ( b ) and medaite ( c ). The chemical composition of ardennite-(V) reported by Barresi et al . ( 2007 ) was re-normalized to a cation sum = 16. Associated errors of data points are considerable
Image
Crystal structures of ardennite (a), tiragalloite (b) and medaite (c) drawn with the program VESTA (Momma and Izumi, 2008).
Published: 01 February 2010
F ig . 1. Crystal structures of ardennite ( a ), tiragalloite ( b ) and medaite ( c ) drawn with the program VESTA ( Momma and Izumi, 2008 ).
Image
The topology of tetrahedra in ardennite (a), tiragalloite (b) and medaite (c).
Published: 01 February 2010
F ig . 3. The topology of tetrahedra in ardennite ( a ), tiragalloite ( b ) and medaite ( c ).
Image
Backscattered electron image of ardennite-(V) from Sparone (light grey), associated with quartz (dark grey). Scale bar: 50 μm.
Published: 01 July 2007
Fig. 2. Backscattered electron image of ardennite-(V) from Sparone (light grey), associated with quartz (dark grey). Scale bar: 50 μm.
Journal Article
Published: 01 December 1999
American Mineralogist (1999) 84 (11-12): 1906–1914.
... presence of ardennite-domains; (2) a sursassite-type structure with pumpellyite domains; (3) cell doubling along c due to long range ordering of the layers containing the X octahedra; or (4) a statistically disordered structure-in the centered A2/m parent space group and in other t subgroups, were all...
Journal Article
Published: 08 January 2021
The Canadian Mineralogist (2021) 59 (1): 91–105.
... )(OH) 2 ·H 2 O (lawsonite structure type). The presence of residual electron density in the difference-Fourier maps corresponding to an ardennite-like environment, which is also observed in orientite and in lavoiserite, also relates this mineral to ardennite-type minerals. The sorosilicate...
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Image
Geological map of the Vardar zone along the border between Republic of Macedonia (FYROM) and Greece (after Robertson et al., 2013). The red star to the north of Vitolište marks the site where the ardennite-bearing rocks described in this paper were found. The grid used is as on the 100,000 geological maps of former Yugoslavia (i.e. Gauss Kruger projection).
Published: 01 June 2017
Fig. 1 Geological map of the Vardar zone along the border between Republic of Macedonia (FYROM) and Greece (after Robertson et al. , 2013 ). The red star to the north of Vitolište marks the site where the ardennite-bearing rocks described in this paper were found. The grid used
Journal Article
Published: 01 April 2008
American Mineralogist (2008) 93 (4): 702–706.
... of ardennite and the new mineral ardennite-(V). Eur. J. Mineral., 19, 581–587. Type material is stored in the mineralogical collections of the Centro Interdipartimentale Museo di Storia Naturale e del Territorio, Università di Pisa, via Roma 103, 56011 Calci (PI), Italy (catalog no. 15525...