Makovickyite Mineral Data

Makovickyite Mineral Data +

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General Makovickyite Information

Chemical Formula:

Ag1.5Bi5.5S9

Composition:

Molecular Weight = 1,599.79 gm

Silver 10.11 % Ag

Bismuth 71.85 % Bi

Sulfur 18.04 % S

______

100.00 %

Empirical Formula:

Ag_1.5Bi_5.5S₉

Environment:

Found in a dolomite skarn.

IMA Status:

Approved IMA 1994

Locality:

Baita Bihourului (formerly Rezbanya), Romaina and Felbertal, Austria. Link to MinDat.org Location Data.

Name Origin:

For Dr. Emil Makovicky, Slovak and Danish mineralogist, University of Copenhagen.

Synonym:

ICSD 69456

IMA1986-027

PDF 47-1752

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Makovickyite Crystallography

Axial Ratios:

a:b:c =3.3012:1:3.632

Cell Dimensions:

a = 13.37, b = 4.05, c = 14.71, Z = 2; beta = 99.5° V = 785.60 Den(Calc)= 6.76

Crystal System:

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

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

By Intensity(I/I_o): 2.85(1), 3.485(0.5), 3.63(0.5),

Physical Properties of Makovickyite

Cleavage:

None

Color:

Gray.

Density:

6.7

Diaphaniety:

Opaque

Habit:

Compact - Occurs as a compact mass.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

3.5 - Copper Penny

Luster:

Metallic

Streak:

gray

Optical Properties of Makovickyite

RL Anisotrophism:

Pronounced in gray tones.

RL Bireflectance:

Not noticable.

RL Color:

Light gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Makovickyite in Air**
λ	R		∑ R(λ)
546 nm	43.20

**Calculated Relative Intensity Colors of Makovickyite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%
R

Calculated Properties of Makovickyite

Electron Density:

r_electron=5.67 gm/cc
note: r_Makovickyite=6.76 gm/cc.

Fermion Index

Fermion Index = 0.00135
Boson Index = 0.99865

Photoelectric:

PE_Makovickyite=1,406.92 barns/electron
U=PE_Makovickyite x r_electron=7,978.23 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Makovickyite is Not Radioactive

Makovickyite Classification

Dana Class:

3.8.10.2 (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/E.09-60 II - Sulfides and sulphosalts

II/E - Sulfosalts (S : As,Sb,Bi = x) Sulfosalts with predominant Silver, x = 6.0 - 1.6

II/E.09 - Benjaminite - Kitaibelite series

II/E.09-05 Borodaevite Ag5(Bi,Sb)9S16 C 2/c 2/m

II/E.09-10 Benjaminite (Ag,Cu)3(Bi,Pb)7S12 C 2/c 2/m

II/E.09-20 Mummeite Ag3CuPbBi6S13orAg2Cu2Pb2Bi6S13 C 2/c 2/m

II/E.09-30 Pavonite (Ag,Cu)(Bi,Pb)3S5 C 2/c 2/m

II/E.09-40 Cupropavonite AgPbCu2Bi5S10 C 2/c 2/m

II/E.09-50 Kitaibelite* Ag10PbBi30S51 Mono ? Mono

II/E.09-60 Makovickyite Ag1.5Bi5.5S9 C 2/c 2/m

Other Makovickyite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.80,p1329,1995) OPTIC PROP.(MinRec, v 27, p 304)

See Also:

Links to other databases for Makovickyite :
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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Print or Cut-and-Paste your Makovickyite Specimen Label here :

Makovickyite

Ag1.5Bi5.5S9
Dana No: 3.8.10.2 Strunz No: II/E.09-60
Locality:

Notes: