Corderoite Mineral Data

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, KÃ¶nigsberg, 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

Search for Corderoite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Corderoite :

A Bijoux Google Search for Corderoite
Adam's Minerals Google Search for Corderoite
Cape Minerals Google Search for Corderoite
Dakota Matrix Minerals Google Search for Corderoite
Excalibur Mineral Corp. Google Search for Corderoite
Exceptional Minerals Google Search for Corderoite
John Betts Fine Minerals Search for Corderoite
McDougall Minerals Google Search for Corderoite
Mineral News Website Link
Rock and Mineral Shows Google Search for Corderoite
Weinrich Minerals, Inc. Google Search for Corderoite

Ask about Corderoite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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: