Cupromakovickyite Mineral Data

Cupromakovickyite Mineral Data

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General Cupromakovickyite Information

Chemical Formula:

Cu4AgPb2Bi9S18

Composition:

Molecular Weight = 3,234.46 gm

Copper 7.86 % Cu

Silver 3.33 % Ag

Bismuth 58.15 % Bi

Lead 12.81 % Pb

Sulfur 17.84 % S

______

100.00 %

Empirical Formula:

Cu₄AgPb₂Bi₉S₁₈

Environment:

Related to makovickyite; structure determined

IMA Status:

Proposed IMA 2002 (Dana # Added)

Locality:

Scheelite deposit, Felben valley, Hohe Tauern Mts, Salzburg, Austria Link to MinDat.org Location Data.

Name Origin:

Named as the Cu-dominant analogue of makovickyite.

Synonym:

IMA2002-058

Cupromakovickyite Image

Images:

Click Here for Larger Cupromakovickyite Image

Cupromakovickyite Hodrushite

Comments: Kup?c?kite (ku) and hodrushite (ho) partly replaced by bismuthinite derivative (bd56) with relict lamellae of low-Cu (4P) and cupromakovickyite [4P(Cu,Pb)]. (CanMin, 41:1165).
Location: Scheelite deposit of Felbertal, Austria. Scale: Scale Bar 100 µm.
© Canadian Mineralogist

Cupromakovickyite Crystallography

Axial Ratios:

a:b:c =3.3381:1:7.4582

Cell Dimensions:

a = 13.396, b = 4.013, c = 29.93, Z = 2; beta = 100.07° V = 1,584.19 Den(Calc)= 6.78

Crystal System:

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

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

By Intensity(I/I_o): 3.478(1), 3.645(0.56), 3.486(0.4),2.964(0.33), 3.345(0.32), 2.282(0.31), 2.842(0.29), 2.885(0.29),

Physical Properties of Cupromakovickyite

Color:

Gray.

Diaphaniety:

Opaque

Luster:

Metallic

Optical Properties of Cupromakovickyite

RL Anisotrophism:

Moderate.

RL Color:

Grayish white with no internal reflections.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Cupromakovickyite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
460 nm	42.30	48.50
540 nm	41.10	47.10
580 nm	40.00	46.00
640 nm	39.80	45.20

**Calculated Relative Intensity Colors of Cupromakovickyite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	220%
R₁
R₂

Calculated Properties of Cupromakovickyite

Electron Density:

r_electron=5.71 gm/cc
note: r_{Cupromakovickyite}=6.78 gm/cc.

Fermion Index

Fermion Index = 0.02965
Boson Index = 0.97035

Photoelectric:

PE_{Cupromakovickyite}=1,358.74 barns/electron
U=PE_{Cupromakovickyite} x r_electron=7,758.37 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Cupromakovickyite is Not Radioactive

Cupromakovickyite Classification

Dana Class:

3.8.10.7 (3)Sulfides - Sulfosalts

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

(3.8.10)Pavonite Group (Monoclinic: C/2c bismuth sulfosalts)

3.8.10.1 Pavonite (Ag,Cu)(Bi,Pb)3S5 C 2/c 2/m

3.8.10.2 Makovickyite Ag1.5Bi5.5S9 C 2/c 2/m

3.8.10.3 Benjaminite (Ag,Cu)3(Bi,Pb)7S12 C 2/c 2/m

3.8.10.4 Mummeite Ag3CuPbBi6S13orAg2Cu2Pb2Bi6S13 C 2/c 2/m

3.8.10.5 Borodaevite Ag5(Bi,Sb)9S16 C 2/c 2/m

3.8.10.6 Cupropavonite AgPbCu2Bi5S10 C 2/c 2/m

3.8.10.7 Cupromakovickyite ! Cu4AgPb2Bi9S18 C 2/m 2/m

3.8.10.8 Kudriavite! (Cd,Pb)Bi2S4 C 2/m 2/m

Strunz Class:

II/X.00-00 II - Sulfides and sulphosalts

II/X - Unclassified Strunz Sulfides and sulphosalts

II/X.00 - Benjaminite - Kitaibelite seri

Other Cupromakovickyite Information

See Also:

Links to other databases for Cupromakovickyite :
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

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

Cupromakovickyite

Cu4AgPb2Bi9S18
Dana No: 3.8.10.7 Strunz No: II/X.00-00
Locality:

Notes: