Tiemannite Mineral Data

Tiemannite Mineral Data +

[Newest Minerals] [Minerals for Sale] [Educational Articles] [About Us] [Image Gallery]
John Betts - Fine Minerals
Classic minerals, out-of-print books & magazines, plus informative articles for collectors

General Tiemannite Information

Chemical Formula:

HgSe

Composition:

Molecular Weight = 279.55 gm

Mercury 71.75 % Hg

Selenium 28.25 % Se

______

100.00 %

Empirical Formula:

HgSe

Environment:

Found in hydrothermal veins, usually with other selenides and calcite.

IMA Status:

Valid Species (Pre-IMA) 1855

Locality:

Marysville, Piute Co., Utah. Link to MinDat.org Location Data.

Name Origin:

Named after its discoverer, C. W. F. Tiemann (1848-1899).

Synonym:

ICSD 24322

PDF 8-469

Tiemannite Image

Images:

Tiemannite

Comments: Dull black tiemannite masses on limestone.
Location: Marysvale, Piute County, Utah. USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Tiemannite

Comments: Dull steel-gray, tetragonal crystals of tiemannite to 0.5mm with modifications and striations, slight purple tinge.
Location: Rio Blanco, Pinal De Arvole, Atriagu, Queretare, Mexico. Scale: Picture size 2 mm.
© Tom Loomis / Dakota Matrix

Tiemannite Crystallography

Cell Dimensions:

a = 6.084, Z = 4; V = 225.20 Den(Calc)= 8.24

Crystal System:

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

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

By Intensity(I/I_o): 3.51(1), 2.151(0.5), 1.835(0.3),

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

Earley J W , American Mineralogist , 35 (1950) p.337-364, Description and syntheses of the selenide minerals

View Additional jPOWD Structure files for Tiemannite
[1]

Physical Properties of Tiemannite

Cleavage:

None

Color:

Gray, Reddish brown, Black.

Density:

8.19 - 8.47, Average = 8.33

Diaphaniety:

Opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Hardness:

2.5 - Finger Nail

Luminescence:

None.

Luster:

Metallic

Magnetism:

Nonmagnetic

Streak:

grayish black

Optical Properties of Tiemannite

RL Color:

Grayish white.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Tiemannite in Air**
λ	R	∑ R(λ)
400 nm	33.40
420 nm	33.60
440 nm	33.80
460 nm	33.20
480 nm	32.30
500 nm	31.30
520 nm	30.50
540 nm	29.80
560 nm	29.30
580 nm	29.00
600 nm	28.70
620 nm	28.50
640 nm	28.30
660 nm	28.20
680 nm	28.00
700 nm	28.00

**Calculated Relative Intensity Colors of Tiemannite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	310%
R

Calculated Properties of Tiemannite

Electron Density:

r_electron=6.72 gm/cc
note: r_Tiemannite=8.24 gm/cc.

Fermion Index

Fermion Index = 0.23816
Boson Index = 0.76184

Photoelectric:

PE_Tiemannite=1,269.54 barns/electron
U=PE_Tiemannite x r_electron=8,531.97 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Tiemannite is Not Radioactive

Tiemannite Classification

Dana Class:

2.8.2.4 (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.01-50 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 Tiemannite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

Search for Tiemannite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Tiemannite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Tiemannite Mineral Data :

Ask about Tiemannite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Tiemannite

HgSe
Dana No: 2.8.2.4 Strunz No: II/C.01-50
Locality:

Notes: