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Piccoliite

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About PiccoliiteHide

07611760016147080971011.jpg
Gian Paolo Piccoli (right) and Gian Carlo Piccoli (left)
Formula:
NaCaMn3+2(AsO4)2O(OH)
Colour:
Black. It is transparent in thin section although very deep red coloured.
Lustre:
Resinous
Hardness:
5 - 5½
Crystal System:
Orthorhombic
Name:
In honour of the mineral collectors Gian Paolo Piccoli (1928–1996) and his son Gian Carlo (b. 1953) for their contribution to the knowledge of the regional mineralogy of Piedmont.
Related to pilawite-(Y).


Classification of PiccoliiteHide

Approved, Pending publication
Approval year:
2017

Physical Properties of PiccoliiteHide

Resinous
Transparency:
Transparent
Colour:
Black. It is transparent in thin section although very deep red coloured.
Streak:
Brown
Hardness:
5 - 5½ on Mohs scale
Tenacity:
Brittle
Fracture:
Irregular/Uneven

Chemical Properties of PiccoliiteHide

Formula:
NaCaMn3+2(AsO4)2O(OH)

Crystallography of PiccoliiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcm
Setting:
Pbcm
Cell Parameters:
a = 8.8761(9) Å, b = 7.5190(8) Å, c = 11.689(1) Å
Ratio:
a:b:c = 1.18 : 1 : 1.555
Unit Cell V:
780.12 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.85 Å(m)
3.470 Å(m)
3.167 Å(vs)
2.742 Å(m)
2.683 Å(ms)
2.580 Å(ms)
2.495 Å(m)
2.325 Å(m)
Comments:
From Type Description.

Type Occurrence of PiccoliiteHide

General Appearance of Type Material:
Aggregates of black anhedral crystals, embedded in the quartz matrix, and rarely as black well-developed prisms
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Museo di Storia Naturale Naturale, Università di Pisa,Italy, catalogue number 19906 (holotype), and the Museo Civico Archeologico e di Scienze Naturali “F. Eusebio”, Alba, Italy, catalogue number

Synonyms of PiccoliiteHide

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for PiccoliiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kolitsch, U (2008): The crystal structure of a new Ca-Na-Mn3+-arsenate from a small metamorphic Mn deposit in Italy. Poster, 18th Annual V. M. Goldschmidt Conference, Vancouver, Canada, July 13-18, 2008; abstract in Geochim. Cosmochim. Acta 72, Special Supplement 12S, A487. [as unnamed Ca-Na-Mn3+-arsenate]
Cámara, F., Biagioni, C., Ciriotti, M.E., Bosi, F., Kolitsch, U., Paar, W.H., Blass, G. and Bittarello, E. (2017) Piccoliite, IMA2017- 016. CNMNC Newsletter No. 37, June 2017, page 741; Mineralogical Magazine: 81: 737–742.
Cámara, F., Biagioni, C., Ciriotti, M.E., Bosi, F., Kolitsch, U., Paar, W.H., Blass, G. and Bittarello, E. (2017): Piccoliite, a new mineral of the pilawite group. Joint SIMP-SGI-AIV-SoGeI 2017 Conference "Geosciences: a tool in a changing world", Pisa, Italy, September 3-6, 2017, Abstract book, 120.
Cámara, F., Biagioni, C., Ciriotti, M.E., Bosi, F., Kolitsch, U., Paar, W.H., Blass, G. and Bittarello, E. (2018): Piccoliite (IMA 2017-016) NaCaMn2(AsO4)2O(OH), Montaldo di Mondovì, Val Corsaglia, Cuneo, Piemonte, e miniera Valletta, Canosio, Cuneo, Piemonte. In: Biagioni, C., Hålenius, U., and Pasero, M., Nuovi minerali italiani. Le approvazioni 2017. Rivista Mineralogica Italiana, 42, 3 (3-2018), page 194.

Internet Links for PiccoliiteHide

Localities for PiccoliiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Italy (TL)
 
  • Piedmont
    • Cuneo Province
      • Canosio
        • Vallone della Valletta
Cámara, F., Biagioni, C., Ciriotti, M.E., Bosi, F., Kolitsch, U., Paar, W.H., Blass, G., Bittarello, E. (2017b) Piccoliite, IMA2017- 016. CNMNC Newsletter No. 37, June 2017, page 741 & Mineralogical Magazine, 81, 737–742; Cámara, F., Biagioni, C., Ciriotti, M.E., Bosi, F., Kolitsch, U., Paar, W.H., Blass, G. and Bittarello, E. (2017): Piccoliite, a new mineral of the pilawite group. Joint SIMP-SGI-AIV-SoGeI 2017 Conference "Geosciences: a tool in a changing world", Pisa, Italy, September 3-6, 2017, Abstract book, 120. [http://www.socgeol.it/files/download/abstract%20book/abstract_book_pisa_2017_doi.pdf]
      • Montaldo di Mondovì
        • Borgata Oberti
Kolitsch, U. (2008) The crystal structure of a new Ca-Na-Mn3+-arsenate from a small metamorphic Mn deposit in Italy. Poster, 18th Annual V. M. Goldschmidt Conference, Vancouver, Canada, July 13-18, 2008 & abstract in Geochim. Cosmochim. Acta 72, Special Supplement 12S, A487 [as unnamed Ca-Na-Mn3+-arsenate]; Kolitsch, U., Ciriotti, M.E., Cadoni, M., Armellino, G., Piccoli, G.C., Ambrino, P., Blass, G., Odicino, G., Ciuffardi, M. (2011) Montaldo di Mondovì Minerali della miniera di manganese e ferro. Micro, 9, 4-21 [as unnamed Ca-Na-Mn3+-arsenate]; Cámara, F., Biagioni, C., Ciriotti, M.E., Bosi, F., Kolitsch, U., Paar, W.H., Blass, G., Bittarello, E. (2017a) Piccoliite, IMA2017- 016. CNMNC Newsletter No. 37, June 2017, page 741 & Mineralogical Magazine, 81, 737–742; Cámara, F., Biagioni, C., Ciriotti, M.E., Bosi, F., Kolitsch, U., Paar, W.H., Blass, G., Bittarello, E. (2017b) Piccoliite, a new mineral of the pilawite group. Congresso SIMP-SGI-SOGEI-AIV 2017, Pisa, 3-6 settembre 2017, Abstract book, page 120; http://www.socgeol.it/files/download/abstract%20book/abstract_book_pisa_2017_doi.pdf
 
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