Coloradoite Mineral Data

Coloradoite Mineral Data +

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General Coloradoite Information

Chemical Formula:

HgTe

Composition:

Molecular Weight = 328.19 gm

Mercury 61.12 % Hg

Tellurium 38.88 % Te

______

100.00 %

Empirical Formula:

HgTe

IMA Status:

Valid Species (Pre-IMA) 1877

Locality:

Smuggler mine, Ballerat district, Boulder County, Colorado, USA. Link to MinDat.org Location Data.

Name Origin:

Named after its locality.

Synonym:

ICSD 60203

PDF 32-665

Coloradoite Image

Images:

Coloradoite

Comments: Massive, metallic coloradoite.
Location: Kalgoorlie, Western Australia, Australia. Scale: 5x2.5x1.5 cm.
© John Betts - Fine Minerals

Coloradoite Crystallography

Cell Dimensions:

a = 6.448, Z = 4; V = 268.09 Den(Calc)= 8.13

Crystal System:

Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: F43m

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

By Intensity(I/I_o): 3.74(1), 2.29(0.9), 1.949(0.7),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Wyckoff R W G , Crystal Structures , 1 (1963) p.85-237, Second edition. Interscience Publishers, New York, New York, Note: ZnS structure, sphalerite structure

Physical Properties of Coloradoite

Cleavage:

None

Color:

Grayish black, Black.

Density:

8.07

Diaphaniety:

Opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

2.5 - Finger Nail

Luminescence:

None.

Luster:

Metallic

Magnetism:

Nonmagnetic

Streak:

black

Optical Properties of Coloradoite

RL Anisotrophism:

Moderate, dark brownish red to blue-gray.

RL Color:

White with slight grayish brown tint, tarnishing to dull purple.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Coloradoite in Air**
λ	R	∑ R(λ)
400 nm	36.40
420 nm	36.00
440 nm	35.60
460 nm	35.20
480 nm	35.00
500 nm	34.90
520 nm	35.00
540 nm	35.40
560 nm	36.20
580 nm	37.00
600 nm	37.30
620 nm	37.00
640 nm	36.10
660 nm	35.40
680 nm	34.70
700 nm	34.20

**Calculated Relative Intensity Colors of Coloradoite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	250%
R

Calculated Properties of Coloradoite

Electron Density:

r_electron=6.54 gm/cc
note: r_Coloradoite=8.13 gm/cc.

Fermion Index

Fermion Index = 0.21564
Boson Index = 0.78436

Photoelectric:

PE_Coloradoite=1,223.67 barns/electron
U=PE_Coloradoite x r_electron=8,002.64 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Coloradoite is Not Radioactive

Coloradoite Classification

Dana Class:

2.8.2.5 (2)Sulfides - Including Selenides and Tellurides

(2.8)where Am Bn Xp, with (m+n):p=1:1

(2.8.2)Sphalerite Group (Isometric: F4¯3m)

2.8.2.1 Sphalerite (Zn,Fe)S F43m 4 3m

2.8.2.2 Stilleite ZnSe F43m 4 3m

2.8.2.3 Metacinnabar HgS F43m 4 3m

2.8.2.4 Tiemannite HgSe F43m 4 3m

2.8.2.5 Coloradoite HgTe F43m 4 3m

2.8.2.6 Hawleyite CdS F43m 4 3m

Strunz Class:

II/C.01-60 II - Sulfides and sulphosalts

II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1

II/C.01 - Sphalerite group and related compounds (with Leutite)

II/C.01-10 Sphalerite (Zn,Fe)S F43m 4 3m

II/C.01-20 Hawleyite CdS F43m 4 3m

II/C.01-30 Metacinnabar HgS F43m 4 3m

II/C.01-40 Stilleite ZnSe F43m 4 3m

II/C.01-50 Tiemannite HgSe F43m 4 3m

II/C.01-60 Coloradoite HgTe F43m 4 3m

II/C.01-70 Polhemusite (Zn,Hg)S P 4/n 4/m

Other Coloradoite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

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Coloradoite

HgTe
Dana No: 2.8.2.5 Strunz No: II/C.01-60
Locality:

Notes: