Lautite Mineral Data
General Lautite Information
Chemical Formula:
CuAsS
Composition:
Molecular Weight = 170.53 gm
Copper 37.26 % Cu
Arsenic 43.93 % As
Sulfur 18.80 % S
______
100.00 %
Empirical Formula:
CuAsS
Environment:
In hydrothermal veins formed at a moderate temperature.
IMA Status:
Valid Species (Pre-IMA) 1881
Locality:
Vater Abraham Mine (Shaft 139), Lauta, Marienberg District, Erzgebirge, Saxony, Germany. Link to MinDat.org Location Data.
Name Origin:
Named after its locality.
Name Pronunciation:
Lautite
Synonym:
ICSD 34450
PDF 39-393
Lautite Image
Images:
Lautite
Comments: Metallic dark gray Lautite aggregate.
Location: Rudolph Shaft, Lauta, Marienberg District, Erzgebirge, Saxony, Germany.
Scale: Specimen size 3 cm.
© Thomas Witzke / Abraxas-Verlag
Lautite Crystallography
Axial Ratios:
a:b:c =0.6979:1:2.1031
Cell Dimensions:
a = 3.79, b = 5.43, c = 11.42, Z = 4; V = 235.02 Den(Calc)= 4.82
Crystal System:
Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: P 21 21 21
X Ray Diffraction:
By Intensity(I/Io ): 3.1(1), 1.903(0.8), 1.61(0.6),
Forms:
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Forms:
( 1 2 4)
( 0 3 4)
( 2 3 4)
( 1 0 2)
( 2 3 0)
( 0 0 1)
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Physical Properties of Lautite
Cleavage:
{001} Indistinct
Color:
Grayish black, Black, Steel gray.
Density:
4.9
Diaphaneity:
Opaque
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Hardness:
3-3.5 - Calcite-Copper Penny
Luster:
Metallic
Streak:
black
Optical Properties of Lautite
RL Anisotrophism:
Weak.
RL Pleochroism:
Very weak.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Lautite in Air
λ
R1
R 2
∑ R1 (λ)
∑ R2 (λ)
400 nm
36.00
37.60
420 nm
34.70
36.40
440 nm
33.40
35.20
460 nm
32.30
34.00
480 nm
31.40
33.10
500 nm
30.70
32.30
520 nm
30.50
31.70
540 nm
30.20
31.40
560 nm
30.10
31.20
580 nm
30.20
31.10
600 nm
30.30
31.20
620 nm
30.50
31.30
640 nm
30.80
31.50
660 nm
31.10
31.80
680 nm
31.50
32.00
700 nm
31.90
32.30
Calculated Relative Intensity Colors of Lautite in Air
Relative Intensity
0%
30%
60%
90%
100%
120%
150%
180%
210%
240%
270%
290%
R1
R2
Calculated Properties of Lautite
Electron Density:
Bulk Density (Electron Density)=4.41 gm/cc note: Specific Gravity of Lautite =4.82 gm/cc.
Fermion Index:
Fermion Index = 0.0014102499 Boson Index = 0.9985897501
Photoelectric:
PELautite = 49.18 barns/electronU=PELautite x r Electron Density= 216.84 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Lautite is Not Radioactive
Lautite Classification
Dana Class:
02.12.08.01 (02) Sulfides - Including Selenides and Tellurides
(02.12) where Am Bn Xp, with (m+n):p=1:2
(02.12.08) Dana Group
02.12.08.01 Lautite CuAsS P 21 21 21 2 2 2
Strunz Class:
02.CB.40 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
02.C - Metal Sulfides, M:S = 1:1 (and similar)
02.CB -With Zn, Fe, Cu, Ag, Au, etc
02.CB.40 Lautite CuAsS P 21 21 21 2 2 2
Other Lautite Information
References:
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
See Also:
Links to other databases for Lautite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Lautite Specimen Label here :
Lautite
CuAsS
Dana No: 02.12.08.01 Strunz No: 02.CB.40
Locality:
Notes: