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Paraniite-(Y)

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About Paraniite-(Y)Hide

Formula:
Ca2Y(AsO4)(WO4)2
Colour:
Cream-yellow
Lustre:
Adamantine, Vitreous
Crystal System:
Tetragonal
Name:
Named by F. Demartin, C.M. Gramaccioli, and T. Pilati in 1992 in honor of Fausto Parani, amateur mineral collector from Montecrestese, Italy, who discovered the mineral. Demartin et al. (1992) suggests the name of paranite-(Y), but paraniite-(Y) was submitted to the IMA and used in Demartin et al. (1994).
This page provides mineralogical data about Paraniite-(Y).


Classification of Paraniite-(Y)Hide

Approved
7.GA.15

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
G : Molybdates, Wolframates and Niobates
A : Without additional anions or H2O
49.4.7.1

49 : HYDRATED MOLYBDATES AND TUNGSTATES
4 : Compound Molybdates and Tungstates

Physical Properties of Paraniite-(Y)Hide

Adamantine, Vitreous
Transparency:
Translucent
Colour:
Cream-yellow

Optical Data of Paraniite-(Y)Hide

Type:
Uniaxial (+)
RI values:
nω = 1.870 nε = 1.920
Max Birefringence:
δ = 0.050
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of Paraniite-(Y)Hide

Formula:
Ca2Y(AsO4)(WO4)2
IMA Formula:
(Ca,Y,Dy)2Y(WO4)2(AsO4)

Crystallography of Paraniite-(Y)Hide

Crystal System:
Tetragonal
Class (H-M):
4/m - Dipyramidal
Space Group:
I41/a
Cell Parameters:
a = 5.135(1) Å, c = 33.882(5) Å
Ratio:
a:c = 1 : 6.598
Unit Cell V:
893.41 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Rough elongated bipyramids

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.674 (18)
3.059 (100)
2.571 (19)
1.901 (32)
1.818 (16)
1.674 (17)
1.562 (32)

Type Occurrence of Paraniite-(Y)Hide

Synonyms of Paraniite-(Y)Hide

Other Language Names for Paraniite-(Y)Hide

Related Minerals - Nickel-Strunz GroupingHide

7.GA.05Fergusonite-(Ce)(Ce,La,Nd)NbO4
7.GA.05Fergusonite-(Nd)(Nd,Ce)(Nb,Ti)O4
7.GA.05Fergusonite-(Y)YNbO4Tet. 4/m : I41/a
7.GA.05PowelliteCa(MoO4)Tet. 4/m : I41/a
7.GA.05ScheeliteCa(WO4)Tet. 4/m : I41/a
7.GA.05StolzitePb(WO4)Tet. 4/m : I41/a
7.GA.05WulfenitePb(MoO4)Tet. 4/m : I41/a
7.GA.10Formanite-(Y)YTaO4Tet. 4/m : I41/a
7.GA.10Iwashiroite-(Y)Y(Ta,Nb)O4Mon. 2/m : P2/b

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 Paraniite-(Y)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Demartin, F., Gramaccioli, C.M., Pilati, T. (1992) Structure of a new natural tungstate arsenate, [Ca2Y(AsO4)(WO4)2], structurally related to scheelite. Acta Crystallographica: C48: 1357-1359.
Jambor, J.L., Puziewicz, J. (1993) New mineral names. American Mineralogist: 78: 450-455.
Demartin, F., Gramaccioli, C. M., Pilati, T. (1994) Paraniite-(Y), a new tungstate arsenate mineral from Alpine fissures. Schweizerische Mineralogische und Petrographische Mitteilungen: 74: 155-160.
Jambor, J.L., Kovalenker, V.A., Roberts, A.C. (1995) New mineral names. American Mineralogist: 80: 630-635.
New Minerals (1997), New Minerals 1990-1994.
Brugger, J., Gieré, R., Grobéty, B., Uspensky, E. (1998) Scheelite-powellite and paraniite-(Y) from the Fe-Mn deposit at Fianel, Eastern Swiss Alps. American Mineralogist: 83: 1100-1110.

Internet Links for Paraniite-(Y)Hide

Localities for Paraniite-(Y)Hide

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
 
  • Liguria
    • Savona Province
      • Maremola Valley
        • Magliolo
Bracco, R., Castellaro, F., Ciuffardi, M., Odicino, G. (2009): Paraniite-(Y) ed altri ritrovamenti da Costa Balzi Rossi. Prie - Notiziario di Mineralogia Ligure, 5, 61-75.
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Ossola Valley
        • Antigorio Valley
          • Devero Valley
            • Baceno
              • Devero Alp
Demartin, F., Gramaccioli, C. M., Pilati, T. (1994): Paraniite-(Y), a new tungstate arsenate mineral from Alpine fissures. Schweizerische Mineralogische und Petrographische Mitteilungen 74, 155-160.; Lapis, 20 (7/8), 41-64+76.; Guastoni, A. (2009): Monte Cervandone. Recenti novità mineralogiche. Rivista Mineralogica Italiana 2009 (1), 38-48.
Switzerland
 
  • Grischun (Grisons; Graubünden)
    • Hinterrhein Valley
      • Ferrera Valley
        • Ausserferrera
Brugger J., Gieré R., Grobéty B., Uspensky E., 1998. Scheelite-powellite and paraniite-(Y) from the Fe-Mn deposit at Fianel, Eastern Swiss Alps. Am. Miner., 83: 1100-1110.
Roth, P. & Meisser, N. (2013): Die seltenen Mineralien der Bündner Manganvorkommen. Schweizer Strahler 47 (3), 8-21 (in German and French).
Mineral and/or Locality  
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