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, Königsberg, Wolfstein, Palatinate, Rhineland-Palatinate, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Images:

Corderoite Radtkeite

Comments: SEM image of prismatic radtkeite crystals and equant corderoite crystals on quartz matrix. AmMin, v76:1715).
Location: McDermitt mercury mine, Humboldt County, Nevada, USA. Scale: Scale Bar 10 µm.
© American Mineralogist

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),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Frueh A J , Gray N , Acta Crystallographica, Section B , 24 (1968) p.156-157, Confirmation and refinement of the structure of Hg3S2Cl2, Locality: synthetic

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
Ncalc = 2.05

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:

Bulk Density (Electron Density)=5.69 gm/cc
note: Specific Gravity of Corderoite =6.85 gm/cc.

Fermion Index:

Fermion Index = 0.24
Boson Index = 0.76

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Corderoite is Not Radioactive

Corderoite Classification

Dana Class:

10.03.03.01 (10)Oxyhalides and Hydroxyhalides

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

(10.03.03)Dana Group

10.03.03.01 Corderoite Hg3S2Cl2 I 2₁3 2 3

10.03.03.02 Kenhsuite! Hg3S2Cl2 A2mm mm2

Strunz Class:

02.FC.15a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.F - Sulfides of Arsenic, Alkalies; Sulfides with Halide, Oxide, Hydroxide, H2O

02.FC -With Cl, Br, I (halide-sulfides)

02.FC.15a Arzakite Hg3S2(Br,Cl)2 P 2/m,P 2,Pm Mono

02.FC.15a Corderoite Hg3S2Cl2 I 2₁3 2 3

02.FC.15a Lavrentievite Hg3S2(Cl,Br)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 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Ask about Corderoite here :
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Print or Cut-and-Paste your Corderoite Specimen Label here :

Corderoite

Hg3S2Cl2
Dana No: 10.03.03.01 Strunz No: 02.FC.15a
Locality:

Notes: