Skip Nav Destination
Close Modal
![First thumbnail for: As-bearing new mineral species from <span class="s...]()
![Second thumbnail for: As-bearing new mineral species from <span class="s...]()
![Third thumbnail for: As-bearing new mineral species from <span class="s...]()
![First thumbnail for: As-bearing new mineral species from <span class="s...]()
![Second thumbnail for: As-bearing new mineral species from <span class="s...]()
![Third thumbnail for: As-bearing new mineral species from <span class="s...]()
![First thumbnail for: As-bearing new mineral species from <span class="s...]()
![Second thumbnail for: As-bearing new mineral species from <span class="s...]()
![Third thumbnail for: As-bearing new mineral species from <span class="s...]()
![First thumbnail for: Arsenic-bearing new mineral species from <span cla...]()
![Second thumbnail for: Arsenic-bearing new mineral species from <span cla...]()
![Third thumbnail for: Arsenic-bearing new mineral species from <span cla...]()
![Mn K-edge XANES of piccoliite from Valletta mine, together with rhodochrosite, bixbyite-(Mn), pyrolusite and hollandite (hollandite spectrum from Manceau et al., 2012).]()
![First thumbnail for: Piccoliite, NaCaMn 3+ 2 (AsO 4 ) 2 O(OH), a new ar...]()
![Second thumbnail for: Piccoliite, NaCaMn 3+ 2 (AsO 4 ) 2 O(OH), a new ar...]()
![Third thumbnail for: Piccoliite, NaCaMn 3+ 2 (AsO 4 ) 2 O(OH), a new ar...]()
![First thumbnail for: Castellaroite, Mn 2+ 3 (AsO 4 ) 2 ·4.5H 2 O, a new...]()
![Second thumbnail for: Castellaroite, Mn 2+ 3 (AsO 4 ) 2 ·4.5H 2 O, a new...]()
![Third thumbnail for: Castellaroite, Mn 2+ 3 (AsO 4 ) 2 ·4.5H 2 O, a new...]()
![Raman spectra of castellaroite from the Monte Nero and Valletta mines in the 100–1100 cm−1 range and, in the insert, the Raman spectrum of castellaroite from Monte Nero in the 1500–4000 cm−1 range.]()
![First thumbnail for: Crystal-chemical relations and classification prob...]()
![Second thumbnail for: Crystal-chemical relations and classification prob...]()
![Third thumbnail for: Crystal-chemical relations and classification prob...]()
![Mn K-edge EXAFS (a) and Fourier transform, uncorrected for phase-shift (b) of piccoliite from Valletta mine.]()
![Typical samples of millimetric orange aggregates, associated with quartz, along a fault plane. They are probably As–Mn minerals characteristic in Valletta Mine.]()
![]()
![Piccoliite from the two Italian occurrences. (a) A well-developed black crystal (1 mm) on quartz from the dump of the Montaldo di Mondovì mine. Collection Gianluca Armellino, photo Pierluigi Ambrino. (b) Black crystals of piccoliite associated with grandaite from the Valletta mine dump. Field of view 5 mm. Collection and photo Roberto Bracco.]()
1-20 OF 57 RESULTS FOR
Valletta Mine
Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
1
Journal Article
As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: IV. Lombardoite, Ba 2 Mn 3+ (AsO 4 ) 2 (OH) and aldomarinoite, Sr 2 Mn 3+ (AsO 4 ) 2 (OH), description and crystal structure Open Access
Journal: Mineralogical Magazine
Published: 07 April 2022
Mineralogical Magazine (2022) 86 (3): 447–458.
... of the arsenbrackebuschite group in the brackebuschite supergroup, discovered in Fe–Mn ore in metaquartzites of the abandoned mine of Valletta, Canosio, Val Maira, Cuneo Province, Piedmont, Italy. They occur as red–brown and orange brown, respectively, as subhedral crystals (< 0.5 mm) in thin masses, associated...
FIGURES
Journal Article
As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: III. Canosioite, Ba 2 Fe 3+ (AsO 4 ) 2 (OH), description and crystal structure Available to Purchase
Journal: Mineralogical Magazine
Published: 01 April 2017
Mineralogical Magazine (2017) 81 (2): 305–317.
...F. Cámara; E. Bittarello; M. E. Ciriotti; F. Nestola; F. Radica; F. Massimi; C. Balestra; R. Bracco Abstract T he new mineral species canosioite, ideally Ba 2 Fe 3+ (AsO 4 ) 2 (OH), has been discovered in the dump of Valletta mine, Maira Valley, Cuneo Province, Piedmont, Italy. Its origin...
FIGURES
Journal Article
As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: II. Braccoite, Na Mn 5 2 + [Si 5 AsO 17 (OH)](OH), description and crystal structure Available to Purchase
Journal: Mineralogical Magazine
Published: 01 February 2015
Mineralogical Magazine (2015) 79 (1): 171–189.
...Fernando Cámara; Erica Bittarello; Marco E. Ciriotti; Fabrizio Nestola; Francesco Radica; Marco Marchesini Abstract The new mineral species braccoite, ideally Na Mn 5 2 + [Si 5 AsO 17 (OH)](OH), has been discovered in the Valletta mine dumps, in Maira Valley, Cuneo province, Piedmont, Italy. Its...
FIGURES
Journal Article
Arsenic-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: I. Grandaite, Sr 2 Al(AsO 4 ) 2 (OH), description and crystal structure Available to Purchase
Journal: Mineralogical Magazine
Published: 01 June 2014
Mineralogical Magazine (2014) 78 (3): 757–774.
...F. Cámara; M. E. Ciriotti; E. Bittarello; F. Nestola; F. Massimi; F. Radica; E. Costa; P. Benna; G. C. Piccoli Abstract The new mineral species grandaite, ideally Sr 2 Al(AsO 4 ) 2 (OH), has been discovered on the dump of Valletta mine, Maira Valley, Cuneo province, Piedmont, Italy. Its origin...
FIGURES
Image
Mn K -edge XANES of piccoliite from Valletta mine, together with rhodochro... Open Access
in Piccoliite, NaCaMn 3+ 2 (AsO 4 ) 2 O(OH), a new arsenate from the manganese deposits of Montaldo di Mondovì and Valletta, Piedmont, Italy
> Mineralogical Magazine
Published: 28 November 2022
Fig. 4. Mn K -edge XANES of piccoliite from Valletta mine, together with rhodochrosite, bixbyite-(Mn), pyrolusite and hollandite (hollandite spectrum from Manceau et al. , 2012 ).
Journal Article
Piccoliite, NaCaMn 3+ 2 (AsO 4 ) 2 O(OH), a new arsenate from the manganese deposits of Montaldo di Mondovì and Valletta, Piedmont, Italy Open Access
Journal: Mineralogical Magazine
Published: 28 November 2022
Mineralogical Magazine (2023) 87 (2): 204–217.
...Fig. 4. Mn K -edge XANES of piccoliite from Valletta mine, together with rhodochrosite, bixbyite-(Mn), pyrolusite and hollandite (hollandite spectrum from Manceau et al. , 2012 ). ...
FIGURES
Journal Article
Castellaroite, Mn 2+ 3 (AsO 4 ) 2 ·4.5H 2 O, a new mineral from Italy related to metaswitzerite Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 June 2016
European Journal of Mineralogy (2016) 28 (3): 687–696.
...Anthony R. Kampf; Fernando Cámara; Marco E. Ciriotti; Barbara P. Nash; Corrado Balestra; Luigi Chiappino Abstract Castellaroite (IMA2015-071), Mn 2+ 3 (AsO 4 ) 2 ·4.5H 2 O, is a new secondary arsenate mineral from the Monte Nero mine, Rocchetta Vara, La Spezia, Liguria, Italy and the Valletta mine...
FIGURES
Includes: Supplemental Content
Image
Raman spectra of castellaroite from the Monte Nero and Valletta mines in th... Available to Purchase
in Castellaroite, Mn 2+ 3 (AsO 4 ) 2 ·4.5H 2 O, a new mineral from Italy related to metaswitzerite
> European Journal of Mineralogy
Published: 01 June 2016
Fig. 3 Raman spectra of castellaroite from the Monte Nero and Valletta mines in the 100–1100 cm −1 range and, in the insert, the Raman spectrum of castellaroite from Monte Nero in the 1500–4000 cm −1 range.
Journal Article
Crystal-chemical relations and classification problems in tourmalines belonging to the oxy-schorl–oxy-dravite–bosiite–povondraite series Available to Purchase
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 June 2017
European Journal of Mineralogy (2017) 29 (3): 445–455.
... and bosiite series (sample from the Valletta mine, Piedmont, Italy) were structurally and chemically characterized by single-crystal X-ray diffraction, electron microprobe analysis, optical absorption and Synchrotron Mössbauer source spectroscopy. A comparative analysis of the results, along with data from...
FIGURES
Includes: Supplemental Content
Image
Mn K -edge EXAFS (a) and Fourier transform, uncorrected for phase-shift (b... Open Access
in Piccoliite, NaCaMn 3+ 2 (AsO 4 ) 2 O(OH), a new arsenate from the manganese deposits of Montaldo di Mondovì and Valletta, Piedmont, Italy
> Mineralogical Magazine
Published: 28 November 2022
Fig. 5. Mn K -edge EXAFS (a) and Fourier transform, uncorrected for phase-shift (b) of piccoliite from Valletta mine.
Image
Typical samples of millimetric orange aggregates, associated with quartz, a... Open Access
in As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: IV. Lombardoite, Ba 2 Mn 3+ (AsO 4 ) 2 (OH) and aldomarinoite, Sr 2 Mn 3+ (AsO 4 ) 2 (OH), description and crystal structure
> Mineralogical Magazine
Published: 07 April 2022
Fig. 2. Typical samples of millimetric orange aggregates, associated with quartz, along a fault plane. They are probably As–Mn minerals characteristic in Valletta Mine.
Image
Structural parameters from the Mn K -edge EXAFS analysis of piccoliite fro... Open Access
in Piccoliite, NaCaMn 3+ 2 (AsO 4 ) 2 O(OH), a new arsenate from the manganese deposits of Montaldo di Mondovì and Valletta, Piedmont, Italy
> Mineralogical Magazine
Published: 28 November 2022
Table 10. Structural parameters from the Mn K -edge EXAFS analysis of piccoliite from Valletta mine. * * S 0 2 = Many-body amplitude reduction factor, R = interatomic distance, σ 2 = Debye-Waller factor. Errors as reported in ARTEMIS .
Image
Piccoliite from the two Italian occurrences. (a) A well-developed black cry... Open Access
in Piccoliite, NaCaMn 3+ 2 (AsO 4 ) 2 O(OH), a new arsenate from the manganese deposits of Montaldo di Mondovì and Valletta, Piedmont, Italy
> Mineralogical Magazine
Published: 28 November 2022
Fig. 2. Piccoliite from the two Italian occurrences. (a) A well-developed black crystal (1 mm) on quartz from the dump of the Montaldo di Mondovì mine. Collection Gianluca Armellino, photo Pierluigi Ambrino. (b) Black crystals of piccoliite associated with grandaite from the Valletta mine dump
Journal Article
IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 63 – CORRIGENDUM Available to Purchase
Journal: Mineralogical Magazine
Published: 01 December 2021
Mineralogical Magazine (2021) 85 (6): 926.
... Valletta mine, Vallone della Valletta, Canosio (CN), Maira Valley, Piedmont, Italy (44°23’54”N, 7°05’37”E, 2560 m a.s.l.) Reference Miyawaki R. , Hatert F. , Pasero M. and Mills S.J. ( 2020 ) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC...
Journal Article
New Mineral Names: Arsenic and Lead Free
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 March 2023
American Mineralogist (2023) 108 (3): 634–636.
... of an old mine found close to the Valletta Pass in the Valletta Valley, Piedmont, Italy. The name lombardoite honors Dr. Bruno Lombardo (1944–2014), a geologist and petrologist who had extensively contributed to the study of the evolution of orogenic belts around the world. The name aldomarinoite honors Mr...
Journal Article
New Mineral Names, Free
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 April 2017
American Mineralogist (2017) 102 (4): 916–920.
.... Castelloroite was also found in the dumps of the Valletta mine, near Canosio, Piedmont, Italy. At the Valletta mine, castellaroite is a secondary mineral as well and occurs with braccoite, hematite, manganberzeliite, orthoclase, and tiragalloite. At the Monte Nero mine, castellaroite occurs in radial aggregates...
Journal Article
MGM volume 86 issue 3 Cover and Back matter Available to Purchase
Journal: Mineralogical Magazine
Published: 01 June 2022
Mineralogical Magazine (2022) 86 (3): b1–b2.
..., ULF HÅLENIUS and CORRADO BALESTRA: As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: IV. Lombardoite, Ba2Mn3+(AsO4)2(OH) and aldomarinoite, Sr2Mn3+(AsO4)2(OH), description and crystal structure MASSIMO D ORAZIO, PAOLO FULIGNATI, ANNA GIONCADA and FRANCESCO CAVALCANTE...
Journal Article
New minerals and nomenclature modifications approved in 2013 Available to Purchase
Journal: Mineralogical Magazine
Published: 01 December 2013
Mineralogical Magazine (2013) 77 (8): 3249–3258.
... Valletta mine, Vallone della Valletta, Piedmont, Italy (44°23′542′ N 7°542′ E) Fernando Cámara*, Marco E. Ciriotti, Erica Bittarello, Fabrizio Nestola, Fabio Bellatreccia, Federico Massimi, Francesco Radica, Emanuele Costa, Piera Benna and Gian Carlo Piccoli *E-mail: fernando.camaraartigas...
Journal Article
New minerals and nomenclature modifications approved in 2017 Open Access
Journal: Mineralogical Magazine
Published: 01 June 2017
Mineralogical Magazine (2017) 81 (3): 737–742.
... , 737–742. IMA No. 2017-016 Piccoliite NaCaMn 3+ 2 (AsO 4 ) 2 O(OH) In the dumps of the Montaldo di Mondovì mine, Borgata Oberti, Montaldo di Mondovì, Corsaglia Valley, Piedmont, Italy (44°19′08.9″N, 7°51′09.5″E – holotype); in the dumps of the Valletta mine, Canosio, Maira Valley...
Journal Article
New Mineral Names, Free
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 January 2015
American Mineralogist (2015) 100 (1): 334–339.
... Museum of the Russian Academy of Sciences, Moscow, Russia. Yu.U. F. Cámara, M.E. Ciriotti, E. Bittarello, F. Nestola, F. Massimi, F. Radica, E. Costa, P. Benna, and G.C. Piccoli (2014) Arsenic-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: I. Grandaite, Sr 2 Al...
1
