Raspite Mineral Data

Raspite Mineral Data +

General Raspite Information

Chemical Formula:

PbWO4

Composition:

Molecular Weight = 455.05 gm

Lead 45.53 % Pb 49.05 % PbO

Tungsten 40.40 % W 50.95 % WO₃

Oxygen 14.06 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Pb(WO₄)

IMA Status:

Valid Species (Pre-IMA) 1897

Locality:

Broken Hill, New South Wales, Australia Link to MinDat.org Location Data.

Name Origin:

Named for Charles Rasp (1846-1907), German-Australian prospector, discovered of the Broken Hill ore deposit.

Synonym:

ICSD 811

PDF 16-156

Raspite Image

Images:

Raspite

Comments: Brown, tabular crystal of raspite on matrix.
Location: Broken Hill, New South Wales, Australia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Raspite Crystallography

Axial Ratios:

a:b:c =2.7224:1:1.1163

Cell Dimensions:

a = 13.525, b = 4.968, c = 5.546, Z = 4; beta = 107.7° V = 355.01 Den(Calc)= 8.51

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/n

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

By Intensity(I/I_o): 3.224(1), 2.76(0.6), 3.619(0.55),

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Crystal Structure:

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Fujita T , Kawada I , Kato K , Acta Crystallographica, Section B , 33 (1977) p.162-164, Raspite from Broken Hill, Locality: Broken Hill NSW, Australia

Physical Properties of Raspite

Cleavage:

[100] Perfect

Color:

Yellow brown, Yellow gray, Light yellow.

Density:

8.465

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Adamantine

Streak:

yellow white

Optical Properties of Raspite

Gladstone-Dale:

CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1504,KPDmeas= 0.1512,KC= 0.1524

Optical Data:

Biaxial (+), a=2.27, b=2.27, g=2.3, bire=0.0300, 2V(Calc)=0, 2V(Meas)=0.

Calculated Properties of Raspite

Electron Density:

r_electron=6.99 gm/cc
note: r_Raspite=8.47 gm/cc.

Fermion Index

Fermion Index = 0.15839
Boson Index = 0.84161

Photoelectric:

PE_Raspite=1,373.52 barns/electron
U=PE_Raspite x r_electron=9,607.12 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Raspite is Not Radioactive

Raspite Classification

Dana Class:

48.1.4.1 (48)Anhydrous Molybdates and Tungstates

(48.1)where A XO4

(48.1.4)Dana Group

48.1.4.1 Raspite PbWO4 P 2/n 2/m

Strunz Class:

VI/G.01-50 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 Raspite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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Print or Cut-and-Paste your Raspite Specimen Label here :

Raspite

PbWO4
Dana No: 48.1.4.1 Strunz No: VI/G.01-50
Locality:

Notes: