Corderoite Mineral Data

Corderoite Mineral Data

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General Corderoite Information

Chemical Formula:

Hg3S2Cl2

Composition:

Molecular Weight = 736.81 gm

Mercury 81.67 % Hg 84.93 % Hg₂O

Sulfur 8.70 % S 8.70 % S^2-

- % S -4.34 % -O=S

Chlorine 9.62 % Cl 9.62 % Cl

- % Cl -2.17 % -O=Cl₂

______ ______

100.00 % 96.74 % = TOTAL OXIDE

Empirical Formula:

Hg₃S₂Cl₂

Environment:

In lake-bed sediments and underlying silicified rhyolite tuffs, possible a low-temperature secondary origin.

IMA Status:

Approved IMA 1974

Locality:

McDermitt Mercury mine (formerly Cordero mine), Opalite district, Humboldt County, Nevada, USA. Link to MinDat.org Location Data.

Name Origin:

Named for its locality.

Synonym:

ICSD 26945

PDF 39-1386

Corderoite Image

Images:

Corderoite

Comments: Small dark brown dodecahedral crystal of corderoite.
Location: Hohe Buche, K?nigsberg, Wolfstein, Palatinate, Rhineland-Palatinate, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Corderoite Crystallography

Cell Dimensions:

a = 8.94, Z = 4; V = 714.52 Den(Calc)= 6.85

Crystal System:

Isometric - TetartoidalH-M Symbol (2 3) Space Group: I 2₁3

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

By Intensity(I/I_o): 3.62(1), 2.57(0.7), 1.749(0.6),

Physical Properties of Corderoite

Color:

Light gray, Light yellow, Light orange pink, Black.

Hardness:

1.5-2 - Talc-Gypsum

Optical Properties of Corderoite

Gladstone-Dale:

CI calc= -0.434 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.219,KC= 0.1527

Optical Data:

Isotropic, n=2.5.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Corderoite in Air**
λ	R	∑ R(λ)
470 nm	16.70
546 nm	15.50
589 nm	15.10
650 nm	15.10

**Calculated Relative Intensity Colors of Corderoite in Air**
Relative Intensity	0%	60%	100%	120%	180%	240%	300%	360%	420%	480%	540%	580%
R

Calculated Properties of Corderoite

Electron Density:

r_electron=5.69 gm/cc
note: r_Corderoite=6.85 gm/cc.

Fermion Index

Fermion Index = 0.2473
Boson Index = 0.7527

Photoelectric:

PE_Corderoite=1,393.04 barns/electron
U=PE_Corderoite x r_electron=7,925.95 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Corderoite is Not Radioactive

Corderoite Classification

Dana Class:

10.3.3.1 (10)Oxyhalides and Hydroxyhalides

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

(10.3.3)Dana Group

10.3.3.1 Corderoite Hg3S2Cl2 I 2₁3 2 3

10.3.3.2 Kenhsuite! Hg3S2Cl2 A2mm mm2

Strunz Class:

II/F.14-10 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 Corderoite Information

References:

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

See Also:

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

Corderoite

Hg3S2Cl2
Dana No: 10.3.3.1 Strunz No: II/F.14-10
Locality:

Notes: