Paraniite-(Y) Mineral Data

Paraniite-(Y) Mineral Data +

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General Paraniite-(Y) Information

Chemical Formula:

Ca2Y(AsO4)(WO4)2

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

Empirical Formula:

Ca₂Y(AsO₄)(WO₄)₂

IMA Status:

Approved IMA 1992

Locality:

Link to MinDat.org Location Data.

Synonym:

IMA1992-018

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Paraniite-(Y) Crystallography

Axial Ratios:

a:c = 1:6.59824

Cell Dimensions:

a = 5.135, c = 33.882, Z = 4; V = 893.41 Den(Calc)= 5.97

Crystal System:

Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: I 4₁/a

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.054(1), 1.56(0.32), 1.899(0.32),

Physical Properties of Paraniite-(Y)

Color:

Yellow.

Diaphaniety:

Translucent

Luster:

Vitreous (Glassy)

Optical Properties of Paraniite-(Y)

Gladstone-Dale:

CI calc= 0.143 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1499,KC= 0.175

Optical Data:

Uniaxial (+), w=1.87, e=1.92, bire=0.0500.

Calculated Properties of Paraniite-(Y)

Electron Density:

r_electron=5.29 gm/cc
note: r_{Paraniite-(Y)}=5.97 gm/cc.

Fermion Index

Fermion Index = 0.06558
Boson Index = 0.93442

Photoelectric:

PE_{Paraniite-(Y)}= 580.07 barns/electron
U=PE_{Paraniite-(Y)} x r_electron=3,067.96 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Paraniite-(Y) is Not Radioactive

Paraniite-(Y) Classification

Dana Class:

49.4.7.1 (49)Basic and Hydrated Molybdates and Tungstates

(49.4)(Compound Anions)

(49.4.7)Dana Group

49.4.7.1 Paraniite-(Y) Ca2Y(AsO4)(WO4)2 I 4₁/a 4/m

Strunz Class:

VI/G.01-25 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/G - Molybdates [MoO4]2- and wolframates [WO4]2-

VI/G.01 - Scheelite - Wulfenite series, (Powellite - Raspite)

VI/G.01-10 Powellite CaMoO4 I 4₁/a 4/m

VI/G.01-20 Scheelite CaWO4 I 4₁/a 4/m

VI/G.01-25 Paraniite-(Y) Ca2Y(AsO4)(WO4)2 I 4₁/a 4/m

VI/G.01-30 Wulfenite PbMoO4 I 4₁/a 4/m

VI/G.01-40 Stolzite PbWO4 I 4₁/a 4/m

VI/G.01-50 Raspite PbWO4 P 2/n 2/m

VI/G.01-60 Koechlinite Bi2MoO6 C mca 2/m 2/m 2/m

VI/G.01-70 Russellite Bi2WO6 P ca2₁ mm2

Other Paraniite-(Y) Information

References:

PHYS. PROP.(Am.Min.,Vol.80,p631,1995) OPTIC PROP.(Am.Min.,Vol.80,p631,1995)

See Also:

Links to other databases for Paraniite-(Y) :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas

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Paraniite-(Y)

Ca2Y(AsO4)(WO4)2
Dana No: 49.4.7.1 Strunz No: VI/G.01-25
Locality:

Notes: