Paraniite-(Y) Mineral Data

Paraniite-(Y) Mineral Data
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General Paraniite-(Y) Information

Help on Chemical Formula: Chemical Formula: Ca2Y(AsO4)(WO4)2
Help on Composition: Composition: Molecular Weight = 803.68 gm
   Calcium    9.97 %  Ca   13.96 % CaO
   Yttrium   11.06 %  Y    14.05 % Y2O3
   Arsenic    9.32 %  As   14.30 % As2O5
   Tungsten  45.75 %  W    57.70 % WO3
   Oxygen    23.89 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Y(AsO4)(WO4)2
Help on Environment: Environment: Found in a fissure in gneiss in an area anomalously high in arsenic.
Help on IMA Status: IMA Status: Approved IMA 1992
Help on Locality: Locality: On the east flank of Pizzo Cervandone, Alpe Devero, Valle d’Ossola, Piedmont, Italy Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Fausto Parani, amateur mineral collector of Montecrestese, Italy, who found the mineral.
Help on Name Pronunciation: Name Pronunciation: Paraniite-(Y) + Pronunciation Say PARANIITE-(Y)
Help on Synonym: Synonym: IMA1992-018
 

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Paraniite-(Y) Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:6.59824
Help on Cell Dimensions: Cell Dimensions: a = 5.135, c = 33.882, Z = 4; V = 893.41 Den(Calc)= 5.97
Help on Crystal System: Crystal System: Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: I 41/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.054(1), 1.56(0.32), 1.899(0.32),
Click Here for Large Paraniite-(Y) Structure Window Crystal Structure:

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Demartin F , Gramaccioli C M , Pilati T , Acta Crystallographica, Section C , 48 (1992) p.1357-1359, Structure of a new natural tungstate arsenate, [Ca2Y(AsO4)(WO4)2], structurally, related to scheelite, Locality: Alpine fissures, Pizzo Cervandone area, Ossola Valley, Italy, Note: anisoU s from ICSD

 

Physical Properties of Paraniite-(Y)

Help on Color: Color: Yellow.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Luster: Luster: Vitreous (Glassy)
 

Optical Properties of Paraniite-(Y)

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.143 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1499,KC= 0.175
Ncalc = 2.04
Help on Optical Data: Optical Data: Uniaxial (+), w=1.87, e=1.92, bire=0.0500.
 

Calculated Properties of Paraniite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.29 gm/cc
note: Specific Gravity of Paraniite-(Y) =5.97 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEParaniite-(Y) = 580.07 barns/electron
U=PEParaniite-(Y) x rElectron Density=3,067.96 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paraniite-(Y) is Not Radioactive
 

Paraniite-(Y) Classification
Help on Dana Class: Dana Class: 49.04.07.01 (49)Basic and Hydrated Molybdates and Tungstates
  (49.04)(Compound Anions)
  (49.04.07)Dana Group
 
49.04.07.01 Paraniite-(Y) Ca2Y(AsO4)(WO4)2 I 41/a 4/m
Help on Strunz Class: Strunz Class: 07.GA.15 07 - SULFATES (SELENATES, TELLURATES)
  07.G - Molybdates, Wolframates and Niobates
  07.GA -Without additional anions or H2O
 
07.GA.15 Paraniite-(Y) Ca2Y(AsO4)(WO4)2 I 41/a 4/m
 

Other Paraniite-(Y) Information
Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Am.Min.,Vol.80,p631,1995) OPTIC PROP.(Am.Min.,Vol.80,p631,1995)
Help on See Also: See Also: Links to other databases for Paraniite-(Y) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Paraniite-(Y)

Ca2Y(AsO4)(WO4)2
Dana No: 49.04.07.01 Strunz No: 07.GA.15
Locality:

 

Notes: