Mineralogy Database

Corderoite Mineral Data

Search Webmineral :

General Corderoite Information

Help on Chemical  Formula: Chemical Formula: Hg3S2Cl2
Help on Composition: Composition: Molecular Weight = 736.81 gm
   Mercury   81.67 %  Hg   84.93 % Hg2O
   Sulfur     8.70 %  S     8.70 % S2-
               -   %  S    -4.34 % -O=S 
   Chlorine   9.62 %  Cl    9.62 % Cl
               -   %   Cl   -2.17 % -O=Cl2   
            ______        ______ 
            100.00 %       96.74 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Hg3S2Cl2
Help on Environment: Environment: In lake-bed sediments and underlying silicified rhyolite tuffs, possible a low-temperature secondary origin.
Help on IMA Status: IMA Status: Approved IMA 1974
Help on Locality: Locality: McDermitt Mercury mine (formerly Cordero mine), Opalite district, Humboldt County, Nevada, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its locality.
Help on Synonym: Synonym: ICSD 26945
  PDF 39-1386

Corderoite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


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

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image

  Radtkeite   Corderoite

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

Help on Cell Dimensions: Cell Dimensions: a = 8.94, Z = 4; V = 714.52 Den(Calc)= 6.85
Help on Crystal System: Crystal System: Isometric - Tetartoidal H-M Symbol (2 3) Space Group: I 213
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.62(1), 2.57(0.7), 1.749(0.6),

Physical Properties of Corderoite

Help on Color: Color: Light gray, Light yellow, Light orange pink, Black.
Help on Hardness: Hardness: 1.5-2 - Talc-Gypsum

Optical Properties of Corderoite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.434 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.219,KC= 0.1527
Ncalc = 2.05
Help on Optical Data: Optical Data: Isotropic, n=2.5.
Help on Reflectivity 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
   0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 540% 580%

Calculated Properties of Corderoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.69 gm/cc
note: Specific Gravity of Corderoite =6.85 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.24
Boson Index = 0.76
Help on Photoelectric: Photoelectric: PECorderoite =1,393.04 barns/electron
U=PECorderoite x rElectron Density=7,925.95 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Corderoite is Not Radioactive

Corderoite Classification

Help on  Dana Class: Dana Class: (10)Oxyhalides and Hydroxyhalides
  (10.03)where (A)3 (O,OH)2 Xq
  (10.03.03)Dana Group Corderoite Hg3S2Cl2 I 213 2 3 Kenhsuite! Hg3S2Cl2 A2mm mm2
Help on  Strunz Class: 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

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: 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:

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

Visit our Advertisers 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 :


Dana No: Strunz No: 02.FC.15a





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.