Imiterite Mineral Data

Imiterite Mineral Data +

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General Imiterite Information

Chemical Formula:

Ag2HgS2

Composition:

Molecular Weight = 480.46 gm

Silver 44.90 % Ag

Mercury 41.75 % Hg

Sulfur 13.35 % S

______

100.00 %

Empirical Formula:

Ag₂HgS₂

Environment:

In a pyritic deposit.

IMA Status:

Approved IMA 1985

Locality:

In the Imiter mine, Anti-Atlas Mountains, Morocco. Link to MinDat.org Location Data.

Name Origin:

For the Imiter mine locality in Morocco.

Synonym:

ICSD 201713

PDF 39-328

Imiterite Image

Images:

Imiterite

Comments: Back metallic prismatic microcrystals of imiterite in white calcite.
Location: Imiter Mine, Jbel Sarho, Anti-Atlas Region, Morocco. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Imiterite

Comments: Silvery needle-like wire crystals of imiterite with rounded tips to 0.5 to .75mm in vuggy calcite.
Location: Imiter mine, Anti-Atlas Mts., Dades Region, Morocco. Scale: Picture size 0.5 cm.
© Tom Loomis / Dakota Matrix

Imiterite Crystallography

Axial Ratios:

a:b:c =0.5045:1:0.8219

Cell Dimensions:

a = 4.039, b = 8.0052, c = 6.58, Z = 2; beta = 107.11° V = 203.34 Den(Calc)= 7.85

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 2.746(1), 2.768(1), 2.461(0.8),

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

Guillou J J , Monthel J , Picot P , Pillard F , Protas J , Samama J C , Bulletin de Mineralogie , 108 (1985) p.457-464

Physical Properties of Imiterite

Color:

Light gray, Black, Silver gray.

Density:

7.85

Diaphaniety:

Opaque

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Metallic

Streak:

dark gray

Optical Properties of Imiterite

RL Anisotrophism:

Strong, from blue to reddish brown.

RL Color:

White-gray.

RL Pleochroism:

Bluish to pinkish.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Imiterite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
420 nm	29.80	33.80
440 nm	33.40	38.30
460 nm	32.10	36.40
480 nm	31.30	34.80
500 nm	30.60	33.70
520 nm	29.90	32.80
540 nm	29.50	32.10
560 nm	29.20	31.50
580 nm	28.90	31.10
600 nm	28.80	30.80
620 nm	28.60	30.50
640 nm	28.50	30.30
660 nm	28.20	29.90
680 nm	27.90	29.70
700 nm	27.50	29.40

**Calculated Relative Intensity Colors of Imiterite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	310%
R₁
R₂

Calculated Properties of Imiterite

Electron Density:

r_electron=6.73 gm/cc
note: r_Imiterite=7.85 gm/cc.

Fermion Index

Fermion Index = 0.12708
Boson Index = 0.87292

Photoelectric:

PE_Imiterite= 809.28 barns/electron
U=PE_Imiterite x r_electron=5,447.64 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Imiterite is Not Radioactive

Imiterite Classification

Dana Class:

2.5.8.1 (2)Sulfides - Including Selenides and Tellurides

(2.5)where Am Bn Xp, with (m+n):p=3:2

(2.5.8)Dana Group

2.5.8.1 Imiterite Ag2HgS2 P 2₁/c 2/m

2.5.8.2 Brodtkorbite! Cu2HgSe2 P 2₁/n 2/m

Strunz Class:

II/B.06-60 II - Sulfides and sulphosalts

II/B - Sulfides with metal: sulfur, selenium and tellurium > 1:1, Sulfides, Selenides and Tellurides with predominant Copper and Silver/Gold

II/B.06 - Jalpaite - Imiterite series

II/B.06-10 Jalpaite Ag3CuS2 I 4₁/amd 4/m 2/m 2/m

II/B.06-20 Mckinstryite (Ag,Cu)2S Pnam 2/m 2/m 2/m

II/B.06-30 Stromeyerite AgCuS C mcm 2/m 2/m 2/m

II/B.06-40 Eucairite CuAgSe Pmmn 2/m 2/m 2/m

II/B.06-50 Henryite Cu4Ag3Te4 Unk Cubic

II/B.06-55 Brodtkorbite! Cu2HgSe2 P 2₁/n 2/m

II/B.06-60 Imiterite Ag2HgS2 P 2₁/c 2/m

Other Imiterite Information

References:

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

See Also:

Links to other databases for Imiterite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Imiterite

Ag2HgS2
Dana No: 2.5.8.1 Strunz No: II/B.06-60
Locality:

Notes: