Emplectite Mineral Data

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General Emplectite Information

Chemical Formula:

CuBiS2

Composition:

Molecular Weight = 336.66 gm

Copper 18.88 % Cu

Bismuth 62.07 % Bi

Sulfur 19.05 % S

______

100.00 %

Empirical Formula:

CuBiS₂

Environment:

In hydrothermal veins with other sulfides and sulfosalts formed at moderate temperatures.

IMA Status:

Valid Species (Pre-IMA) 1853

Locality:

Czechoslovakia at Schlaggenwald, Bohemia. Link to MinDat.org Location Data.

Name Origin:

From the Greek emplektos, "interwoven."

Name Pronunciation:

Emplectite + Pronunciation

Synonym:

ICSD 34936

Klaprothite - mixture with wittichenite

PDF 43-1473

Emplectite Image

Images:

Emplectite

Comments: Metallic emplectite wire in quartz.
Location: Schwarzenberg, Saxony, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Emplectite Crystallography

Axial Ratios:

a:b:c =0.4228:1:0.2698

Cell Dimensions:

a = 6.1413, b = 14.524, c = 3.9191, Z = 4; V = 349.57 Den(Calc)= 6.40

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnam

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

By Intensity(I/I_o): 3.05(1), 3.23(0.9), 3.13(0.7),

Forms:

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Forms: ( 0 1 1) ( 0 1 0) ( 0 1 3) ( 1 0 0) ( 1 1 0)

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Crystal Structure:

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Kyono A , Kimata M , American Mineralogist , 90 (2005) p.162-165, Crystal structures of chalcostibite (CuSbS2) and emplectite (CuBiS2): Structural, relationship of stereochemical activity between chalcostibite and emplectite

View Additional jPOWD Structure files for Emplectite
[1]

Physical Properties of Emplectite

Cleavage:

{001} Perfect

Color:

Gray, Grayish yellow, Silver white, Tin white.

Density:

6.3 - 6.5, Average = 6.4

Diaphaneity:

Opaque

Fracture:

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

Habit:

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

Habit:

Massive - Fibrous - Distinctly fibrous fine-grained forms.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

2 - Gypsum

Luminescence:

Non-fluorescent.

Luster:

Metallic

Magnetism:

Nonmagnetic

Streak:

black

Optical Properties of Emplectite

RL Color:

Light yellow.

RL Pleochroism:

Very low.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Emplectite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	28.70	31.10
420 nm	30.00	32.20
440 nm	31.30	33.30
460 nm	32.40	34.40
480 nm	33.40	35.40
500 nm	34.40	36.20
520 nm	35.20	37.00
540 nm	35.90	37.50
560 nm	36.50	38.00
580 nm	37.00	38.30
600 nm	37.50	38.60
620 nm	37.90	38.80
640 nm	38.10	38.80
660 nm	38.20	38.70
680 nm	38.20	38.50
700 nm	38.00	38.00

**Calculated Relative Intensity Colors of Emplectite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	270%	280%
R₁
R₂

Calculated Properties of Emplectite

Electron Density:

Bulk Density (Electron Density)=5.47 gm/cc
note: Specific Gravity of Emplectite =6.40 gm/cc.

Fermion Index:

Fermion Index = 0.001429339
Boson Index = 0.998570661

Photoelectric:

PE_Emplectite=1,178.18 barns/electron
U=PE_Emplectite x rElectron Density=6,450.50 barns/cc.

Radioactivity:

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

Emplectite Classification

Dana Class:

03.07.05.02 (03)Sulfides - Sulfosalts

(03.07)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.07.05)Dana Group

03.07.05.01 Chalcostibite CuSbS2 Pnam 2/m 2/m 2/m

03.07.05.02 Emplectite CuBiS2 Pnam 2/m 2/m 2/m

Strunz Class:

02.HA.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.H - Sulfosalts of SnS Archetype

02.HA -With Cu, Ag, Fe (without Pb)

02.HA.05 Emplectite CuBiS2 Pnam 2/m 2/m 2/m

02.HA.05 Chalcostibite CuSbS2 Pnam 2/m 2/m 2/m

Other Emplectite Information

References:

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

See Also:

Links to other databases for Emplectite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - HyperPhysics
11 - MinDAT
12 - MinMax(Deutsch)
13 - MinMax(English)
14 - Mineralienatlas (Deutsch)
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST

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Emplectite

CuBiS2
Dana No: 03.07.05.02 Strunz No: 02.HA.05
Locality:

Notes: