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Pinchite Mineral Data
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General Pinchite Information
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Chemical Formula: |
Hg++5O4Cl2 |
Composition: |
Molecular Weight = 1,137.85 gm |
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Mercury 88.14 % Hg 95.17 % HgO |
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Chlorine 6.23 % Cl 6.23 % Cl |
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- %
Cl -1.41 % -O=Cl2 |
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Oxygen 5.62 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Hg5O4Cl2 |
Environment: |
Secondary mineral in a hydrothermal mercury deposit. |
IMA Status: |
Approved IMA 1974 |
Locality: |
Terlingua, Brewster Co., Texas, USA. Link to MinDat.org Location Data. |
Name Origin: |
Named for William Wallace Pinch (1940- ), American mineral collector of Rochester, New York, USA, who first noted the species. |
Name Pronunciation: |
Pinchite |
Synonym: |
ICSD 75935 |
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PDF 26-1267 |
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Pinchite Image |
Images:
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Pinchite Crystallography
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Axial Ratios: |
a:b:c =1.9031:1:1.918 |
Cell Dimensions: |
a = 11.619, b = 6.105, c = 11.71, Z = 4; V = 830.64 Den(Calc)= 9.10 |
Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: I bam |
X Ray Diffraction: |
By Intensity(I/Io): 2.837(1), 2.695(0.8), 3.94(0.6), |
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Physical Properties of Pinchite
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Cleavage: |
None |
Color: |
Black, Black brown. |
Density: |
9.5 |
Hardness: |
1-2 - Between Talc and Gypsum |
Streak: |
reddish brown |
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Optical Properties of Pinchite
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Optical Data: |
NCalc= 2.24 - from Gladstone-Dale relationship (KC = 0.1368) where Ncalc=Dcalc*KC+1 NCalc= 2.3 - from Gladstone-Dale relationship (KC = 0.1368) where Ncalc=Dmeas*KC+1
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Calculated Properties of Pinchite
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Electron Density: |
Bulk Density (Electron Density)=7.45 gm/cc note: Specific Gravity of Pinchite =9.10 gm/cc. |
Fermion Index: |
Fermion Index = 0.26 Boson Index = 0.74 |
Photoelectric: |
PEPinchite =1,523.65 barns/electron U=PEPinchite x rElectron Density=11356.85 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Pinchite is Not Radioactive |
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Pinchite Classification
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Dana Class: |
10.05.03.01 (10)Oxyhalides and Hydroxyhalides |
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(10.05)where Am (O,OH)p Xq |
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(10.05.03)Dana Group |
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10.05.03.01 Pinchite Hg5O4Cl2 I bam 2/m 2/m 2/m |
Strunz Class: |
03.DD.25 03 - HALIDES |
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03.D - Oxyhalides, Hydroxyhalides and Related Double Halides |
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03.DD -With Hg |
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03.DD.25 Pinchite Hg5O4Cl2 I bam 2/m 2/m 2/m |
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Other Pinchite Information
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References: |
NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Pinchite :
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
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Pinchite Specimen Label here :
Pinchite
Hg++5O4Cl2
Dana No: 10.05.03.01 Strunz No: 03.DD.25
Locality:
Notes:
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