Arsenolamprite Mineral Data

Arsenolamprite Mineral Data +

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General Arsenolamprite Information

Chemical Formula:

Composition:

Molecular Weight = 74.92 gm

Arsenic 100.00 % As

______

100.00 %

Empirical Formula:

Environment:

Trimorphous with arsenic and pararsenolimprite.

IMA Status:

Valid Species (Pre-IMA) 1886

Locality:

Marienberg, Saxony, Germany. Link to MinDat.org Location Data.

Name Origin:

Named for the composition and the Greek for brilliance, in allusion to its luster.

Synonym:

ICSD 70100

PDF 30-100

Arsenolamprite Image

Images:

Arsenolamprite

Comments: Needle like gray crystals of arsenolamprite in calcite matrix.
Location: Mackenheim,, Odenwald, Germany. Scale: Crystal size 1 mm.
© Tom Loomis / Dakota Matrix

Images:

Arsenolamprite

Comments: REM (Raster Electron Microscope) image of well cristallized arsenolamprite fragments.
Location: Mine dump near shaft 371, Hartenstein, Germany. Scale: See Image.
© Thomas Schlothauer

Images:

Arsenolamprite

Comments: Vein of arsenolamprite in matrix.
Location: Mine dump near shaft 371, Hartenstein, Germany. Scale: See Image.
© Thomas Schlothauer

Arsenolamprite Crystallography

Axial Ratios:

a:b:c =0.8157:1:2.4629

Cell Dimensions:

a = 3.63, b = 4.45, c = 10.96, Z = 8; V = 177.04 Den(Calc)= 5.62

Crystal System:

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

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

By Intensity(I/I_o): 1.12(1), 2.72(1), 5.44(1),

Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
I - Data Info
A - Atoms On/Off
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Wyckoff R W G , Crystal Structures , 1 (1963) p.239-444, Second edition. Interscience Publishers, New York, New York

Physical Properties of Arsenolamprite

Cleavage:

[???] Perfect

Color:

Dark gray.

Density:

5.3 - 5.58, Average = 5.44

Diaphaniety:

Opaque

Fracture:

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

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

2 - Gypsum

Luster:

Metallic

Streak:

black

Optical Properties of Arsenolamprite

RL Anisotrophism:

Weak.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Arsenolamprite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
420 nm	42.80	56.80
440 nm	43.60	55.40
460 nm	44.30	54.00
480 nm	44.70	52.80
500 nm	44.80	51.60
520 nm	44.60	50.50
540 nm	44.00	49.60
560 nm	43.10	48.70
580 nm	42.70	48.00
600 nm	42.60	47.40
620 nm	42.70	46.80
640 nm	43.00	46.30
660 nm	43.40	45.80
680 nm	43.80	45.50
700 nm	44.40	45.00

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

Calculated Properties of Arsenolamprite

Electron Density:

r_electron=4.95 gm/cc
note: r_{Arsenolamprite}=5.62 gm/cc.

Fermion Index

Fermion Index = 0
Boson Index = 1

Photoelectric:

PE_{Arsenolamprite}= 73.21 barns/electron
U=PE_{Arsenolamprite} x r_electron= 362.46 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Arsenolamprite is Not Radioactive

Arsenolamprite Classification

Dana Class:

1.3.2.1 (1)Native Elements

(1.3)with semi-metallic and non-metallic elements

(1.3.2)Dana Group

1.3.2.1 Arsenolamprite As Bmab 2/m 2/m 2/m

1.3.2.2 Pararsenolamprite! As Pmn2 or P 2₁nm Ortho

Strunz Class:

I/B.01-50 I - Elements

I/B - Semimetals and nonmetals

I/B.01 - Arsenic-Bismuth series

I/B.01-10 Arsenic As R 3m 3 2/m

I/B.01-20 Stibarsen SbAs R 3m 3 2/m

I/B.01-30 Antimony Sb R 3m 3 2/m

I/B.01-40 Bismuth Bi R 3m 3 2/m

I/B.01-50 Arsenolamprite As Bmab 2/m 2/m 2/m

I/B.01-55 Pararsenolamprite! As Pmn2 or P 2₁nm Ortho

I/B.01-60 Paradocrasite Sb2(Sb,As)2 C 2 2

Other Arsenolamprite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Arsenolamprite :
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 - Mineral and Gemstone Kingdom 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Arsenolamprite

As
Dana No: 1.3.2.1 Strunz No: I/B.01-50
Locality:

Notes: