Paarite Mineral Data

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General Paarite Information

Chemical Formula:

Cu1.7Pb1.7Bi6.3S12

Composition:

Molecular Weight = 2,166.36 gm

Iron 0.03 % Fe

Copper 4.90 % Cu

Bismuth 60.77 % Bi

Lead 16.45 % Pb

Sulfur 17.85 % S

______

100.00 %

Empirical Formula:

Cu_1.67Fe²⁺_0.01Pb_1.72Bi_6.3S_12.06

Environment:

Metamorphosed scheelite deposit. (56 Å derivative of the bismuthinite-aikinite series)

IMA Status:

Approved IMA 2001 (Dana # Added)

Locality:

Felbertal scheelite deposit, Hohe Tauern, about 10 km south of the town of Mittersill, Salzburg province, Austria. Link to MinDat.org Location Data.

Name Origin:

Named for. W. Paar (Salzburg) of the University of Copenhagen and the University of Salzburg.

Synonym:

IMA2001-016

Paarite Image

Images:

Paarite Krupkaite

Comments: A mosaic of large grains of a low-Cu bismuthinite derivative, decomposed into an intergrowth of paarite (bd42) and krupkaite (bd49).
Location: In quartz veins of the Felbertal scheelite deposit, Salzburg Province, Austria. (CanMin v43:909). Scale: See Image.
© Canadian Mineralogist

Paarite Crystallography

Axial Ratios:

a:b:c =0.0715:1:0.2055

Cell Dimensions:

a = 4.007, b = 55.998, c = 11.512, Z = 5; V = 2,583.11 Den(Calc)= 6.96

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmcn

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

By Intensity(I/I_o): 3.63(1)(053 ), 2.836(0.926)(1.10.2), 3.136(0.924)(1.10.1),3.551(0.847)(0.15.1), 3.155(0.572)(152 ), 4.01(0.563)(0.10.2), 3.585(0.553)(151), 2.56(0.406)(0.10.4), 2.658(0.364)(1.15.1),

Crystal Structure:

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Makovicky E , Topa D , Balic-Zunic T , The Canadian Mineralogist , 39 (2001) p.1377-1382, The crystal structure of paarite, the newly discovered 56 A derivative, of the bismuthinite-aikinite solid-solution series

Physical Properties of Paarite

Cleavage:

{0kl} Perfect

Color:

Tin white.

Diaphaneity:

Opaque

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Hardness:

3.5 - Copper Penny

Luster:

Metallic

Optical Properties of Paarite

RL Anisotrophism:

Distinct.

RL Color:

Tin white with no internal reflections.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Paarite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
460 nm	48.16	38.32
540 nm	48.56	37.42
580 nm	48.09	36.93
640 nm	46.69	36.20

**Calculated Relative Intensity Colors of Paarite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%
R₁
R₂

Calculated Properties of Paarite

Electron Density:

Bulk Density (Electron Density)=5.82 gm/cc
note: Specific Gravity of Paarite =6.96 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Paarite=1,475.46 barns/electron
U=PE_Paarite x rElectron Density=8,585.56 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paarite is Not Radioactive

Paarite Classification

Dana Class:

03.08.17.01 (03)Sulfides - Sulfosalts

(03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.08.17)Dana Group

03.08.17.01 Paarite! Cu1.7Pb1.7Bi6.3S12 Pmcn 2/m 2/m 2/m

Strunz Class:

02.HB.05a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.H - Sulfosalts of SnS Archetype

02.HB -With Cu, Ag, Hg, Fe, Sn and Pb

02.HB.05a Aikinite PbCuBiS3 Pbnm 2/m 2/m 2/m

02.HB.05a Hammarite Pb2Cu2Bi4S9(?) Pbnm 2/m 2/m 2/m

02.HB.05a Gladite PbCuBi5S9 P nma 2/m 2/m 2/m

02.HB.05a Friedrichite Pb5Cu5Bi7S18 Pb21m mm2

02.HB.05a Lindstromite Pb3Cu3Bi7S15 Pbnm 2/m 2/m 2/m

02.HB.05a Krupkaite PbCuBi3S6 P mc2₁ mm2

02.HB.05a Pekoite PbCuBi11(S,Se)18 P 2₁am mm2

02.HB.05a Paarite! Cu1.7Pb1.7Bi6.3S12 Pmcn 2/m 2/m 2/m

02.HB.05a Emilite! Cu2.68Pb2.68Bi5.32S12 P mc2₁ mm2

02.HB.05a Salzburgite! Cu1.6Pb1.6Bi6.4S12 P mc2₁ mm2

Other Paarite Information

References:

NAME( CanMin 39:1377) PHYS. PROP.(AmMin 89:1831, 91:218) OPTIC PROP.(AmMin, 91:218)

See Also:

Links to other databases for Paarite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - MinDAT
6 - MinMax(Deutsch)
7 - MinMax(English)
8 - Mineralienatlas (Deutsch)
9 - QUT Mineral Atlas
10 - Ruff.Info

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

Paarite

Cu1.7Pb1.7Bi6.3S12
Dana No: 03.08.17.01 Strunz No: 02.HB.05a
Locality:

Notes: