Mineralogy Database

Tedhadleyite Mineral Data

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General Tedhadleyite Information

Help on Chemical  Formula: Chemical Formula: Hg++Hg+10O4I2(Cl1.16Br0.84)2
Help on Composition: Composition: Molecular Weight = 2,698.11 gm
   Mercury   80.29 %  Hg   75.76 % Hg2O /  8.03 % HgO
   Iodine    10.35 %  I    10.35 % I
               -   %   I    -0.65 % -O=I2    
   Bromine    2.96 %  Br    2.96 % Br
               -   %   Br   -0.30 % -O=Br2   
   Chlorine   4.20 %  Cl    4.20 % Cl
               -   %   Cl   -0.95 % -O=Cl2   
   Oxygen     2.19 %  O
            ______        ______ 
            100.00 %       99.41 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: HgHg9.8O3.7I2.22(Cl1.6)2(Br0.5)
Help on Environment: Environment: Vug in a quartz-magnesite host rock at a prospect pit near the Clear Creek mercury mine. (new structure-type)
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: Clear Creek claim, San Benito County, California, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Ted A. Hadley (1961-) of Sunnyvale, California, who participated in the collection of the holotype specimen.
Help on Synonym: Synonym: IMA2001-035

Tedhadleyite Image

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Comments: Grain of tedhadleyite between crossed polars, showing ubiquitous red internal reflections. (CanMin, v40:909).
Location: Small prospect pit near the long abandoned Clear Creek mercury mine, New Idria district, San Benito County, California, USA. Scale: Grain Size 0.3 mm.
© Canadian Mineralogist

Tedhadleyite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5916:1:1.0629
Help on Cell Dimensions: Cell Dimensions: a = 7.014, b = 11.855, c = 12.601, Z = 2; alpha = 115.56°, beta = 82.57°, gamma = 100.57° V = 921.40 Den(Calc)= 9.72
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: A1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.885(1)(113), 3.143(0.9)(131,222), 2.675(0.9), 3.005(0.7)(122), 2.981(0.5)(211), 5.281(0.5)(020,111), 2.508(0.4), 6.52(0.3),

Physical Properties of Tedhadleyite

Help on Cleavage: Cleavage: {010} Poor
Help on Color: Color: Very dark red, Black.
Help on Diaphaneity: Diaphaneity: Opaque to translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Adamantine - Submetallic
Help on Streak: Streak: red

Optical Properties of Tedhadleyite

Help on Optical Data: Optical Data: NCalc= 2.57 - from Gladstone-Dale relationship (KC = 0.1622) where Ncalc=Dcalc*KC+1
Help on RL Anisotrophism: RL Anisotrophism: Moderate.
Help on RL Bireflectance: RL Bireflectance: None.
Help on RL Color: RL Color: Bluish white.
Help on RL Pleochroism: RL Pleochroism: None.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Tedhadleyite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 470 nm   27.20   30.00 
 546 nm   24.40   27.60 
 589 nm   22.80   25.40 
 650 nm   21.60   23.90 
Calculated Relative Intensity Colors of Tedhadleyite in Air
   0%   40%   80% 100% 120% 160% 200% 240% 280% 320% 360% 390%

Calculated Properties of Tedhadleyite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.87 gm/cc
note: Specific Gravity of Tedhadleyite =9.66 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.24
Boson Index = 0.76
Help on Photoelectric: Photoelectric: PETedhadleyite =1,440.22 barns/electron
U=PETedhadleyite x rElectron Density=11339.93 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tedhadleyite is Not Radioactive

Tedhadleyite Classification

Help on  Dana Class: Dana Class: (10)Oxyhalides and Hydroxyhalides
  (10.05)where Am (O,OH)p Xq
  (10.05.14)Dana Group Tedhadleyite! HgHg10O4I2(Cl1.16Br0.84)2 A1 1
Help on  Strunz Class: Strunz Class: 03.DD.40 03 - HALIDES
  03.D - Oxyhalides, Hydroxyhalides and Related Double Halides
  03.DD -With Hg
03.DD.40 Tedhadleyite! HgHg10O4I2(Cl1.16Br0.84)2 A1 1

Other Tedhadleyite Information

Help on References: References: NAME( AmMin, Vol 88, p 477) PHYS. PROP.(AmMin, Vol 88, p 477) OPTIC PROP.(AmMin, Vol 88, p 477)
Help on See Also: See Also: Links to other databases for Tedhadleyite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 03.DD.40





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