Tedhadleyite Mineral Data

General Tedhadleyite Information

Chemical Formula:

Hg++Hg+10O4I2(Cl1.16Br0.84)2

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

Empirical Formula:

HgHg_9.8O_3.7I_2.22(Cl_1.6)2(Br_0.5)

Environment:

Vug in a quartz-magnesite host rock at a prospect pit near the Clear Creek mercury mine. (new structure-type)

IMA Status:

Approved IMA 2002 (Dana # Added)

Locality:

Clear Creek claim, San Benito County, California, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Ted A. Hadley (1961-) of Sunnyvale, California, who participated in the collection of the holotype specimen.

Synonym:

IMA2001-035

Tedhadleyite Image

Images:

Tedhadleyite

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

Axial Ratios:

a:b:c =0.5916:1:1.0629

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

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: A1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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

Cleavage:

{010} Poor

Color:

Very dark red, Black.

Diaphaneity:

Opaque to translucent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Spherical - Spherical, rounded aggregates.

Hardness:

2.5 - Finger Nail

Luster:

Adamantine - Submetallic

Streak:

red

Optical Properties of Tedhadleyite

Optical Data:

NCalc= 2.57 - from Gladstone-Dale relationship (KC = 0.1622) where Ncalc=Dcalc*KC+1

RL Anisotrophism:

Moderate.

RL Bireflectance:

None.

RL Color:

Bluish white.

RL Pleochroism:

None.

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**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	320%	360%	390%
R₁
R₂

Calculated Properties of Tedhadleyite

Electron Density:

Bulk Density (Electron Density)=7.87 gm/cc
note: Specific Gravity of Tedhadleyite =9.66 gm/cc.

Fermion Index:

Fermion Index = 0.24
Boson Index = 0.76

Photoelectric:

PE_Tedhadleyite=1,440.22 barns/electron
U=PE_Tedhadleyite x rElectron Density=11339.93 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tedhadleyite is Not Radioactive

Tedhadleyite Classification

Dana Class:

10.05.14.01 (10)Oxyhalides and Hydroxyhalides

(10.05)where Am (O,OH)p Xq

(10.05.14)Dana Group

10.05.14.01 Tedhadleyite! HgHg10O4I2(Cl1.16Br0.84)2 A1 1

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

References:

NAME( AmMin, Vol 88, p 477) PHYS. PROP.(AmMin, Vol 88, p 477) OPTIC PROP.(AmMin, Vol 88, p 477)

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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Print or Cut-and-Paste your Tedhadleyite Specimen Label here :

Tedhadleyite

Hg++Hg+10O4I2(Cl1.16Br0.84)2
Dana No: 10.05.14.01 Strunz No: 03.DD.40
Locality:

Notes: