Arzakite Mineral Data

Arzakite Mineral Data +

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General Arzakite Information

Chemical Formula:

Hg3S2(Br,Cl)2

Composition:

Molecular Weight = 803.48 gm

Mercury 74.90 % Hg 77.88 % Hg₂O

Sulfur 7.98 % S 7.98 % S^2-

- % S -3.98 % -O=S

Bromine 14.92 % Br 14.92 % Br

- % Br -1.49 % -O=Br₂

Chlorine 2.21 % Cl 2.21 % Cl

- % Cl -0.50 % -O=Cl₂

______ ______

100.00 % 97.01 % = TOTAL OXIDE

Empirical Formula:

Hg₃S₂Br_1.5Cl_0.5

Environment:

In oxidized zone of mercury deposits.

IMA Status:

Approved IMA 1984

Locality:

Arzak mercury deposits, Tuva, Siberia, Russia. Link to MinDat.org Location Data.

Name Origin:

Named after it's locality.

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Arzakite Crystallography

Axial Ratios:

a:b:c =1.7156:1:3.5209

Cell Dimensions:

a = 8.99, b = 5.24, c = 18.45, Z = 5; beta = 92.46° V = 868.33 Den(Calc)= 7.68

Crystal System:

MonoclinicSpace Group: P 2/m,P 2,Pm

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

By Intensity(I/I_o): 2.65(1), 3.06(0.6), 3.07(0.6),5.1(0.6), 2.32(0.5), 1.618(0.3), 4.06(0.3), 3.43(0.3),

Crystal Structure:

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Minets Y V , Voroshilov Y V , Pan ko V V , Journal of Alloys and Compounds , 367 (2004) p.109-114, The structures of mercury chalcogenhalogenides Hg3X2Hal2, Note: synthetic, superstructure

Physical Properties of Arzakite

Color:

Grayish black, Yellow, Reddish brown, Black.

Density:

7.64

Diaphaniety:

Opaque

Habit:

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

Hardness:

2-2.5 - Gypsum-Finger Nail

Luster:

Vitreous - Metallic

Optical Properties of Arzakite

Optical Data:

NCalc= 2.16 - from Gladstone-Dale relationship (KC = 0.1515) where Ncalc=Dcalc*KC+1
NCalc= 2.16 - from Gladstone-Dale relationship (KC = 0.1515) where Ncalc=Dmeas*KC+1

Calculated Properties of Arzakite

Electron Density:

r_electron=6.37 gm/cc
note: r_Arzakite=7.68 gm/cc.

Fermion Index

Fermion Index = 0.22678
Boson Index = 0.77322

Photoelectric:

PE_Arzakite=1,293.84 barns/electron
U=PE_Arzakite x r_electron=8,236.42 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Arzakite is Not Radioactive

Arzakite Classification

Dana Class:

10.3.4.2 (10)Oxyhalides and Hydroxyhalides

(10.3)where (A)3 (O,OH)2 Xq

(10.3.4)Dana Group

10.3.4.1 Lavrentievite Hg3S2(Cl,Br)2 P 2/m,P 2,Pm Mono

10.3.4.2 Arzakite Hg3S2(Br,Cl)2 P 2/m,P 2,Pm Mono

Strunz Class:

II/F.14-50 II - Sulfides and sulphosalts

II/F - Sulfides with nonmetallic properties, Halogensulfides (Sulfohalides) with Mercury/Lead and related compounds

II/F.14 - Corderoite - Arzakite series

II/F.14-05 Kenhsuite! Hg3S2Cl2 A2mm mm2

II/F.14-10 Corderoite Hg3S2Cl2 I 2₁3 2 3

II/F.14-20 Grechishchevite Hg3S2(Br,Cl,I)2 P 4₂m-,P 4m2,P 4mm,P 4/mmm Tetra

II/F.14-30 Radtkeite Hg3S2ClI C 2/m 2/m

II/F.14-40 Lavrentievite Hg3S2(Cl,Br)2 P 2/m,P 2,Pm Mono

II/F.14-50 Arzakite Hg3S2(Br,Cl)2 P 2/m,P 2,Pm Mono

Other Arzakite Information

References:

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

See Also:

Links to other databases for Arzakite :
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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Arzakite

Hg3S2(Br,Cl)2
Dana No: 10.3.4.2 Strunz No: II/F.14-50
Locality:

Notes: