Arsenolamprite
A valid IMA mineral species - grandfathered
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About Arsenolamprite
Formula:
As
Colour:
Grey-white.
Lustre:
Metallic
Hardness:
2
Specific Gravity:
5.3 - 5.5
Crystal System:
Orthorhombic
Name:
Named for its composition and for the Greek λαμπρός ("lampros") for "brilliant", in allusion to its luster.
Type Locality:
Polymorph of:
Unique Identifiers
Mindat ID:
312
Long-form identifier:
mindat:1:1:312:8
GUID
(UUID V4):
(UUID V4):
cb8d5a4f-917c-4234-b17a-2f892ecad0e2
Classification of Arsenolamprite
Approved, 'Grandfathered' (first described prior to 1959)
1.CA.10
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
C : Metalloids and Nonmetals
A : Arsenic group elements
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
C : Metalloids and Nonmetals
A : Arsenic group elements
Dana 7th ed.:
1.3.1.2
1.3.2.1
1 : NATIVE ELEMENTS AND ALLOYS
3 : Semi-metals and non-metals
1 : NATIVE ELEMENTS AND ALLOYS
3 : Semi-metals and non-metals
1.34
1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)
1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Asl | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Arsenolamprite
Metallic
Transparency:
Opaque
Colour:
Grey-white.
Comment:
Alters to a dull black coating
Streak:
Black.
Hardness:
2 on Mohs scale
Cleavage:
Perfect
Perfect in one direction.
Perfect in one direction.
Density:
5.3 - 5.5 g/cm3 (Measured) 5.577 g/cm3 (Calculated)
Optical Data of Arsenolamprite
Anisotropism:
weak
Reflectivity:
| Wavelength | R1 | R2 |
|---|---|---|
| 420nm | 42.8% | 56.8% |
| 440nm | 43.6% | 55.4% |
| 460nm | 44.3% | 54.0% |
| 480nm | 44.7% | 52.8% |
| 500nm | 44.8% | 51.6% |
| 520nm | 44.6% | 50.5% |
| 540nm | 44.0% | 49.6% |
| 560nm | 43.1% | 48.7% |
| 580nm | 42.7% | 48.0% |
| 600nm | 42.6% | 47.4% |
| 620nm | 42.7% | 46.8% |
| 640nm | 43.0% | 46.3% |
| 660nm | 43.4% | 45.8% |
| 680nm | 43.8% | 45.5% |
| 700nm | 44.4% | 45.0% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 56.8%.
R1 shown in black, R2 shown in red
Chemical Properties of Arsenolamprite
Crystallography of Arsenolamprite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 3.63 Å, b = 4.45 Å, c = 10.96 Å
Ratio:
a:b:c = 0.816 : 1 : 2.463
Unit Cell V:
177.04 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Needles to 8 mm, foliated, radial aggregates of plates, massive.
Comment:
On synthetic material. Non-standard space group Bmab.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
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Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
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Display Options
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2D | Stereo | Red-Blue | Red-Cyan
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View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0011251 | Arsenolamprite | Wyckoff R W G (1963) Second edition. Interscience Publishers, New York, New York Crystal Structures 1 239-444 | 1963 | 0 | 293 | ||
| 0014996 | Arsenolamprite | Smith P M, Leadbetter A J, Apling A J (1974) The structures of orthorhombic and vitrous arsenic Philosophical Magazine 31 57-64 | 1974 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.76 Å | (10) |
| 3.48 Å | (6) |
| 2.745 Å | (8) |
| 2.72 Å | (10) |
| 2.230 Å | (5) |
| 1.875 Å | (7) |
| 1.730 Å | (7) |
Comments:
Alacrán mine, Chile.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
| High-? alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Geological Setting:
Carbonate rocks, calcite veins
Type Occurrence of Arsenolamprite
Synonyms of Arsenolamprite
Arsenwismut (in part)
Other Language Names for Arsenolamprite
Common Associates
Associated Minerals Based on Photo Data:
| 10 photos of Arsenolamprite associated with Arsenic | As |
| 3 photos of Arsenolamprite associated with Proustite | Ag3AsS3 |
| 2 photos of Arsenolamprite associated with Realgar | As4S4 |
| 2 photos of Arsenolamprite associated with Quartz | SiO2 |
| 1 photo of Arsenolamprite associated with Arsenolite | As2O3 |
| 1 photo of Arsenolamprite associated with Calcite | CaCO3 |
| 1 photo of Arsenolamprite associated with Xanthoconite | Ag3AsS3 |
Related Minerals - Strunz-mindat Grouping
| 1.CA.05 | Antimony | Sb |
| 1.CA.05 | Arsenic | As |
| 1.CA.05 | Bismuth | Bi |
| 1.CA.05 | Stibarsen | AsSb |
| 1.CA.10 | Pararsenolamprite | (As,Sb) |
| 1.CA.15 | Paradocrasite | Sb2(Sb,As)2 |
| 1.CA.20 | Phosphorus | P4 |
Other Information
Health Risks:
Comprised of arsenic - always wash hands after handling. Avoid inhaling dust when handling or breaking. Never lick or ingest.
Internet Links for Arsenolamprite
mindat.org URL:
https://www.mindat.org/min-312.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
References for Arsenolamprite
Reference List:
Localities for Arsenolamprite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Austria | |
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Chile | |
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Czech Republic | |
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France | |
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Germany | |
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Greece | |
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Mozambique | |
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North Macedonia | |
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Norway | |
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Poland | |
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South Korea | |
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Switzerland | |
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USA | |
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Niederschlema, Bad Schlema, Aue-Bad Schlema, Erzgebirgskreis, Saxony, Germany