Fizelyite Mineral Data

Fizelyite Mineral Data +

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General Fizelyite Information

Chemical Formula:

Pb14Ag5Sb21S48 (?)

Composition:

Molecular Weight = 7,536.06 gm

Silver 7.16 % Ag

Antimony 33.93 % Sb

Lead 38.49 % Pb

Sulfur 20.42 % S

______

100.00 %

Empirical Formula:

Pb₁₄Ag₅Sb₂₁S₄₈

Environment:

In hydrothermal veins.

IMA Status:

Valid Species (Pre-IMA) 1926

Locality:

Kisbanya, Comitat Szatmar, Rumania. Link to MinDat.org Location Data.

Name Origin:

For Sandor Fizely, mining engineer, who discovered the mineral.

Fizelyite Image

Images:

Fizelyite

Comments: Galena and sphalerite with minor chalcopyrite and a heavy druse of acicular fizelyite crystals.
Location: Herja, Kisbanya, Transylvania, Romania. Scale: Crystal size 3 mm.
© John Veevaert

Fizelyite Crystallography

Axial Ratios:

a:b:c =0.6841:1:0.452

Cell Dimensions:

a = 13.167, b = 19.246, c = 8.7, Z = 1; beta = 90.4° V = 2,204.63 Den(Calc)= 5.68

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/n

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

By Intensity(I/I_o): 3.32(1), 2.939(0.55), 3.29(0.55),

Physical Properties of Fizelyite

Cleavage:

[010] Good

Color:

Lead gray, Dark gray, Steel gray.

Density:

5.56

Diaphaniety:

Opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Striated - Parallel lines on crystal surface or cleavage face.

Hardness:

2 - Gypsum

Luster:

Metallic

Streak:

dark gray

Optical Properties of Fizelyite

Optical Data:

NCalc= 1.39 - from Gladstone-Dale relationship (KC = 0.0681) where Ncalc=Dcalc*KC+1
NCalc= 1.38 - from Gladstone-Dale relationship (KC = 0.0681) where Ncalc=Dmeas*KC+1

RL Anisotrophism:

Shown, but without distinct color effects.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Fizelyite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	41.60	48.30
420 nm	40.60	47.40
440 nm	39.60	46.50
460 nm	39.30	46.10
480 nm	39.00	45.80
500 nm	38.80	45.60
520 nm	38.40	45.20
540 nm	38.00	44.90
560 nm	37.80	44.50
580 nm	37.40	43.80
600 nm	36.90	43.20
620 nm	36.30	42.40
640 nm	35.60	41.40
660 nm	34.80	40.30
680 nm	34.00	39.00
700 nm	33.00	37.80

**Calculated Relative Intensity Colors of Fizelyite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	250%
R₁
R₂

Calculated Properties of Fizelyite

Electron Density:

r_electron=4.86 gm/cc
note: r_Fizelyite=5.68 gm/cc.

Fermion Index

Fermion Index = 0.08659
Boson Index = 0.91341

Photoelectric:

PE_Fizelyite= 828.02 barns/electron
U=PE_Fizelyite x r_electron=4,021.60 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Fizelyite is Not Radioactive

Fizelyite Classification

Dana Class:

3.4.15.8 (3)Sulfides - Sulfosalts

(3.4)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(3.4.15)Lillianite Group (Orthorhombic, AmBnS6 where A=Pb, Ag, Mn and B=Sb, Bi)

3.4.15.1 Lillianite Pb3Bi2S6 Bbmm 2/m 2/m 2/m

3.4.15.2 Bursaite Pb5Bi4S11 Bbmm 2/m 2/m 2/m

3.4.15.3 Gustavite PbAgBi3S6(?) Bbmm 2/m 2/m 2/m

3.4.15.4 Andorite PbAgSb3S6 Pmma 2/m 2/m 2/m

3.4.15.5 Uchucchacuaite AgPb3MnSb5S12 P mmm 2/m 2/m 2/m

3.4.15.6 Ramdohrite Ag3Pb6Sb11S24 P 2/n 2/m

3.4.15.7 Roshchinite Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 Pmna 2/m 2/m 2/m

3.4.15.8 Fizelyite Pb14Ag5Sb21S48(?) P 2₁/n 2/m

Strunz Class:

II/E.23-20 II - Sulfides and sulphosalts

II/E - Sulfosalts (S : As,Sb,Bi = x) Complex Lead-Sulfosalts (Pb-Fe/Mn, Pb-Ag), with predominant Antimon x = 2.3 - 2.0

II/E.23 - Uchucchacuaite - Roshchinite series

II/E.23-10 Uchucchacuaite AgPb3MnSb5S12 P mmm 2/m 2/m 2/m

II/E.23-20 Fizelyite Pb14Ag5Sb21S48(?) P 2₁/n 2/m

II/E.23-30 Ramdohrite Ag3Pb6Sb11S24 P 2/n 2/m

II/E.23-40 Andorite PbAgSb3S6 Pmma 2/m 2/m 2/m

II/E.23-50 Roshchinite Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 Pmna 2/m 2/m 2/m

Other Fizelyite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Fizelyite :
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 12 -École des Mines de Paris

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Fizelyite

Pb14Ag5Sb21S48 (?)
Dana No: 3.4.15.8 Strunz No: II/E.23-20
Locality:

Notes: