Capgaronnite Mineral Data

Capgaronnite Mineral Data

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General Capgaronnite Information

Chemical Formula:

HgAg(Cl,Br,I)S

Composition:

Molecular Weight = 398.46 gm

Silver 27.07 % Ag

Mercury 50.34 % Hg

Sulfur 8.05 % S

Iodine 3.18 % I

Bromine 6.02 % Br

Chlorine 5.34 % Cl

______

100.00 %

Empirical Formula:

HgAgCl_0.6Br_0.3I_0.1S

IMA Status:

Approved IMA 1991

Locality:

Link to MinDat.org Location Data.

Name Origin:

Named in 1992 for the locality.

Synonym:

ICSD 66329

IMA1990-011

PDF 44-1451

Capgaronnite Image

Images:

Capgaronnite

Comments: Very small black prismatic crystals of capgaronnite in matrix.
Location: Cap Garonne, Var, France. Scale: Picture size 0.7 mm.
© Thomas Witzke / Abraxas-Verlag

Capgaronnite Crystallography

Axial Ratios:

a:b:c =0.5285:1:0.3518

Cell Dimensions:

a = 6.803, b = 12.87, c = 4.528, Z = 4; V = 396.45 Den(Calc)= 6.68

Crystal System:

Orthorhombic - DisphenoidalH-M Symbol (2 2 2) Space Group: P 2₁2₁2₁

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

By Intensity(I/I_o): 2.664(1), 3.637(0.6), 3.762(0.6),

Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
I - Data Info
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Mason B , Mumme W G , Sarp H , American Mineralogist , 77 (1992) p.197-200, Capgaronnite, HgSAg(Cl,Br,I), a new sulfide-halide mineral from Var, France

Physical Properties of Capgaronnite

Cleavage:

[010] Perfect

Color:

Brownish black, Black.

Density:

6.19

Diaphaniety:

Translucent to Opaque

Luster:

Subadamantine

Streak:

brownish black

Optical Properties of Capgaronnite

Gladstone-Dale:

CI meas= -0.251 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.159 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1871,KPDmeas= 0.2019,KC= 0.1614

Optical Data:

Biaxial (-), a=2.2, g=2.3, bire=0.1000

Calculated Properties of Capgaronnite

Electron Density:

r_electron=5.67 gm/cc
note: r_Capgaronnite=6.68 gm/cc.

Fermion Index

Fermion Index = 0.15263
Boson Index = 0.84737

Photoelectric:

PE_Capgaronnite= 931.88 barns/electron
U=PE_Capgaronnite x r_electron=5,280.47 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Capgaronnite is Not Radioactive

Capgaronnite Classification

Dana Class:

2.15.6.1 (2)Sulfides - Including Selenides and Tellurides

(2.15)(Chlorides)

(2.15.6)Dana Group

2.15.6.1 Capgaronnite HgAg(Cl,Br,I)S P 2₁2₁2₁ 2 2 2

2.15.6.2 Iltisite! HgSAg(Cl,Br) P 6₂,P 6₂22 6 2 2

Strunz Class:

II/F.13-10 II - Sulfides and sulphosalts

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

II/F.13 - Capgaronnite-Perroudite series

II/F.13-05 Iltisite! HgSAg(Cl,Br) P 6₂,P 6₂22 6 2 2

II/F.13-10 Capgaronnite HgAg(Cl,Br,I)S P 2₁2₁2₁ 2 2 2

II/F.13-20 Perroudite Hg5-xAg4xS5-x(Cl,I,Br)4x P 2₁2₁2 2 2 2

Other Capgaronnite Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.77,p197-200,1992) OPTIC PROP.(Am.Min.,Vol.77,p197-200,1992)

See Also:

Links to other databases for Capgaronnite :
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 - WWW-MINCRYST 13 -École des Mines de Paris

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Capgaronnite

HgAg(Cl,Br,I)S
Dana No: 2.15.6.1 Strunz No: II/F.13-10
Locality:

Notes: