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Corderoite Mineral Data
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General Corderoite Information
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 Chemical Formula: |
Hg3S2Cl2 |
| Composition: |
Molecular Weight = 736.81 gm |
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Mercury 81.67 % Hg 84.93 % Hg2O |
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Sulfur 8.70 % S 8.70 % S2- |
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- % S -4.34 % -O=S |
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Chlorine 9.62 % Cl 9.62 % Cl |
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- %
Cl -2.17 % -O=Cl2 |
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______ ______ |
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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 |
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PDF 39-1386 |
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Corderoite Image |
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Images:
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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 |
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Images:
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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 |
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Corderoite Crystallography
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| Cell Dimensions: |
a = 8.94, Z = 4; V = 714.52 Den(Calc)= 6.85 |
| Crystal System: |
Isometric - Tetartoidal H-M Symbol (2 3) Space Group: I 213 |
| X Ray Diffraction: |
By Intensity(I/Io): 3.62(1), 2.57(0.7), 1.749(0.6), |
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Physical Properties of Corderoite
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| Color: |
Light gray, Light yellow, Light orange pink, Black. |
| Hardness: |
1.5-2 - Talc-Gypsum |
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Optical Properties of Corderoite
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| 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 |
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∑ R(λ) |
| 470 nm |
16.70 |
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| 546 nm |
15.50 |
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| 589 nm |
15.10 |
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| 650 nm |
15.10 |
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Calculated Relative Intensity Colors of Corderoite in Air
Relative
Intensity |
0% |
60% |
100% |
120% |
180% |
240% |
300% |
360% |
420% |
480% |
540% |
580% |
| R |
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Calculated Properties of Corderoite
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| Electron Density: |
Bulk Density (Electron Density)=5.69 gm/cc
note: Specific Gravity of Corderoite =6.85 gm/cc.
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| Fermion Index: |
Fermion Index = 0.24
Boson Index = 0.76 |
| Photoelectric: |
PECorderoite =1,393.04 barns/electron
U=PECorderoite x rElectron Density=7,925.95 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Corderoite is Not Radioactive |
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Corderoite Classification
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| Dana Class: |
10.03.03.01 (10)Oxyhalides and Hydroxyhalides |
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(10.03)where (A)3 (O,OH)2 Xq |
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(10.03.03)Dana Group |
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10.03.03.01 Corderoite Hg3S2Cl2 I 213 2 3 |
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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 |
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02.F - Sulfides of Arsenic, Alkalies; Sulfides with Halide, Oxide, Hydroxide, H2O |
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02.FC -With Cl, Br, I (halide-sulfides) |
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02.FC.15a Arzakite Hg3S2(Br,Cl)2 P 2/m,P 2,Pm Mono |
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02.FC.15a Corderoite Hg3S2Cl2 I 213 2 3 |
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02.FC.15a Lavrentievite Hg3S2(Cl,Br)2 P 2/m,P 2,Pm Mono |
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Other Corderoite Information
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| 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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Print or Cut-and-Paste your Corderoite Specimen Label here :
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Corderoite
Hg3S2Cl2
Dana No: 10.03.03.01 Strunz No: 02.FC.15a
Locality:
Notes:
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