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Paraniite-(Y)

Pictures (2 Images total)

Paraniit-(Y) (?)
Views (Image: 1593192319): 91
Paraniit-(Y) (?) (SNr: Binn-WG-Wulf-3-1-1)

Bei diesen sternartig gegliederten Kriställchen könnte es sich eventuell um Paraniit-(Y) handeln. Die Analyse steht noch aus. Die Stufe stammen aus den zerklüfteten Bändern des südlichen Fundbereic...

Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2020-06-26
Locality: Wannigletscher-Scherbadung / Kriegalptal (Chriegalptal) / Binn / Goms, Bezirk / Wallis, Kanton / Schweiz
Paraniit-(Y) (?)
Views (Image: 1593192398): 112
Paraniit-(Y) (?) (SNr: Binn-WG-Wulf-3-1-1)

Bei diesen sternartig gegliederten Kriställchen könnte es sich eventuell um Paraniit-(Y) handeln. Die Analyse steht noch aus. Die Stufe stammen aus den zerklüfteten Bändern des südlichen Fundbereic...

Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2020-06-26
Locality: Wannigletscher-Scherbadung / Kriegalptal (Chriegalptal) / Binn / Goms, Bezirk / Wallis, Kanton / Schweiz

Collectors Summary

Color cremegelb
Streak color weiß
Cleavages deutlich {001}
Fracture uneben bis halbmuschelig
Crystal System tetragonal, I41/a

Chemism

Chem­ical formula

Ca2Y[AsO4|(WO4)2]

Chem­ical com­po­si­tion

Arsen, Calcium, Yttrium, Sauerstoff, Wolfram

Unit weight: 803.659414 u; Number of atoms in the formula: 18

Info

Empirical formula:

Ca2Y[AsO4(WO4)2]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

23.89

12

66.67

15.9994300

191.9931600

Calcium

Ca

9.97

2

11.11

40.0784000

80.1568000

Arsenic

As

9.32

1

5.56

74.9216020

74.9216020

Yttrium

Y

11.06

1

5.56

88.9058520

88.9058520

Tungsten

W

45.75

2

11.11

183.8410000

367.6820000

Anal­y­sis wt%

CaO : 12.35, Y2O3 : 16.15, Gd2O3 : 0.70, Dy2O3 : 1.87, Er2O3 : 1.37, Yb2O3 : 0.81, WO3 : 51.61, As2O5 : 16.92, Ln2O3 : 20.90 (Ref: Schweizerische Mineralogische und Petrographische

Mitteilungen 94)

Strunz 9th edi­tion incl. updates

7.GA.10

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
G: Molybdate und Wolframate
A: Ohne zusätzliche [Anionen] oder H2O
10:Paraniit-(Y)

Lapis Clas­sifica­tion

VI/G.01-025

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
G: Molybdate [MoO4] 2- und Wolframate [WO4] 2-

Clas­sifica­tion by Hölzel

7.GB.500

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
G: Molybdates and Wolframates
B: Molybdates and Wolframates (+Anions -Water)

Dana 8th edi­tion

49.04.07.01

49: Basic and Hydrated Molybdates and Tungstates
04: Basic and Hydrated Molybdates and Tungstates (Compound Anions)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

cremegelb

Streak color

weiß

max. Birefrin­gence

0.05

Birefringence chart\! Paraniite-(Y) title=Birefringence chart Paraniite-(Y)

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.87

RI value γ / ε

1.92

Ri mean

1.887

2V angle

Uniaxial (+)

Optical Data Luminescence

Color SW-UV (254nm)

 

orangegelb

SW-UV Intensity

mittel

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

tetragonal

Class (H-M)

4/m

Space Group number

88

Space Group

I41/a

Cell param­e­ters a (Å)

5.135

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

33.882

Cell param­e­ters a/b or c/a

6.598

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

893.408

X-Ray Pow­der Diffrac­tion

4.674(20),
3.059(100),
2.827(10),
2.571(20),
1.901(30),
1.818(20),
1.674(20),
1.562(30)

XRD chart Paraniite-(Y)

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Physical Properties

Density (g/cm³)

5.95 (berechnet)

5.975 ( ρ calc. Mineralienatlas )

Cleav­ages

deutlich {001}

Frac­ture

uneben bis halbmuschelig

Preface

Author (Name, Year)

Demartin & Gramaccioli & Pilati, 1994

References

Schweizerische Mineralogische und Petrographische Mitteilungen 74 (1994), 155

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Paraniite-(Y)

Ca2Y[AsO4|(WO4)2]

tetragonal : 4/m : I41/a

7.GA.10

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Powellite

CaMoO4

tetragonal : 4/m : I41/a

VI/G.01-010

Scheelite

CaWO4

tetragonal : 4/m : I41/a

VI/G.01-020

Paraniite-(Y)

Ca2Y[AsO4|(WO4)2]

tetragonal : 4/m : I41/a

VI/G.01-025

Wulfenite

PbMoO4

tetragonal : 4/m : I41/a

VI/G.01-030

Suseinargiuite

NaBi(MoO4)2

tetragonal : 4/m : I41/a

VI/G.01-035

Stolzite

PbWO4

tetragonal : 4/m : I41/a

VI/G.01-040

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Paraniite-(Y)

Ca2Y[AsO4|(WO4)2]

tetragonal : 4/m : I41/a

7.GB.500

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

'Betpakdalite'

49.04.01.01

Obradovicite-KCu

[K2(H2O)17Cu2+(H2O)6][Mo8As2Fe3+3O34(OH)3]

orthorhombisch : mmm : Pnmb

49.04.02.01

Melkovite

[Ca2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O36(OH)]

monoklin : 2/m : C2/m

49.04.03.01

Betpakdalite-NaCa

[Na2(H2O)17Ca(H2O)6][Mo8As2Fe3+3O34(OH)3]

monoklin : 2/m : C2/m

49.04.04.01

Paramendozavilite

[KAl4(H2O)30][Mo12P6Fe3+6O60(OH)13]

49.04.06.01

Paraniite-(Y)

Ca2Y[AsO4|(WO4)2]

tetragonal : 4/m : I41/a

49.04.07.01

Vajdakite

(Mo6+O2)2[As23+O5]

monoklin : 2/m : P21/c

49.04.08.01

Other languages

German

Paraniit-(Y)

English

Paraniite-(Y)

French

Paraniite-(Y)

Spanish

Paraniíta-(Y)

Russian

Параниит-(Y)

IMA Number

IMA 1992-018

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Paraniit-(Y)
Google-Bilder-Suche - search for: Paraniit-(Y)
Mineralogisch-Petrographisches-Institut Hamburg - search for: Paraniit-(Y)

English pages

Mindat - search for: Paraniite-(Y)
Webmineral - search for:Paraniite-(Y)
Handbook-of-Mineralogy - search for: Paraniite-(Y)
RRUFF - Raman, XRD and other mineral data - search for: Paraniite-(Y)
RRUFF - References and PDF downloads - search for: Paraniite-(Y)
American-Mineralogist-Crystal-Structure-Database - search for: Paraniite-(Y)
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Russian pages

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Mineral Dealer

German pages

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Locations with GPS information