Raberite
A valid IMA mineral species
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About Raberite
Formula:
Tl5Ag4As6SbS15
Colour:
Black
Lustre:
Metallic
Hardness:
2½ - 3
Specific Gravity:
5.649 (Calculated)
Crystal System:
Triclinic
Name:
Named in honour of Dr. Thomas Raber (b. 1966), a well-known mineral expert on the Lengenbach minerals for more than 20 years. He has analyzed several specimens from this deposit and has published many articles about Lengenbach minerals. He is currently (2012) Vice-President of the FGL (Forschungsgemeinschaft Lengenbach; literally: research community of Lengenbach)
Type Locality:
This page provides mineralogical data about Raberite.
Unique Identifiers
Mindat ID:
42792
Long-form identifier:
mindat:1:1:42792:0
GUID
(UUID V4):
(UUID V4):
9561710c-85d8-4828-a4eb-9f99a3191f00
IMA Classification of Raberite
Approved
IMA Formula:
Tl5Ag4As6SbS15
Approval year:
2012
First published:
2012
Type description reference:
Classification of Raberite
2.LA.70
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
A : Without essential Pb
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
A : Without essential Pb
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 |
---|---|---|
Rbr | 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 Raberite
Metallic
Transparency:
Opaque
Colour:
Black
Streak:
Dark brown-red
Hardness:
2½ - 3 on Mohs scale
Hardness:
VHN10=50 - 55 kg/mm2 - Vickers
Tenacity:
Brittle
Density:
5.649 g/cm3 (Calculated)
Optical Data of Raberite
Anisotropism:
Weak; grayish to light blue.
Bireflectance:
Moderately
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
471.1nm | 30.6% | 31.8% |
548.3nm | 28.1% | 29.3% |
586.6nm | 27.1% | 28.0% |
652.3nm | 25.8% | 26.9% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 31.8%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Dark gray
Pleochroism:
Weak
Comments:
From light grey to a slightly greenish grey
Chemistry of Raberite
Mindat Formula:
Tl5Ag4As6SbS15
Crystallography of Raberite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 8.920(1) Å, b = 9.429(1) Å, c = 20.062(3) Å
α = 79.66(1)°, β = 88.84(1)°, γ = 62.72(1)°
α = 79.66(1)°, β = 88.84(1)°, γ = 62.72(1)°
Ratio:
a:b:c = 0.946 : 1 : 2.128
Unit Cell V:
1471.6 ų
Z:
2
Crystal Structure
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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) |
---|---|---|---|---|---|---|---|
0019616 | Raberite | Bindi L, Nestola F, Guastoni A, Peruzzo L, Ecker M, Carampin R (2012) Raberite, Ti5Ag4As6SbS15, a new Ti-bearing sulfosalt from Lengenbach quarry, Binn valley, Switzerland: description and crystal structure Mineralogical Magazine 76 1153-1163 | 2012 | Lengenbach quarry, Binn valley, Switzerland | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.580 Å | (100) |
3.506 Å | (58) |
3.281 Å | (73) |
3.017 Å | (54) |
3.001 Å | (98) |
2.657 Å | (51) |
2.636 Å | (46) |
2.591 Å | (57) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-𝑇 alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Raberite
General Appearance of Type Material:
As euhedral crystals up to 150 μm across
Place of Conservation of Type Material:
Museum of Mineralogy of the Department of Geosciences, University of Padova, Italy, catalogue number MMP M11420
Associated Minerals at Type Locality:
Reference:
Bindi, L., Nestola, F., Guastoni, A., Peruzzo, L., Ecker, M. and Carampin, R. (2012): Raberite, Tl^5Ag^4As^6SbS^15 , a new Tl-bearing sulfosalt from Lengenbach quarry, Binn valley , Switzerland: description and crystal structure. Mineralogical Magazine: 76(5): 1153-1163.
Synonyms of Raberite
Common Associates
Related Minerals - Strunz-mindat Grouping
2.LA. | Gladkovskyite | MnTlAs3S6 |
2.LA. | Biagioniite | Tl2SbS2 |
2.LA. | Thunderbayite | TlAg3Au3Sb7S6 |
2.LA. | Auerbakhite | MnTl2As2S5 |
2.LA. | Ferrofettelite | [Ag6As2S7][Ag10FeAs2S8] |
2.LA.10 | Dervillite | Ag2AsS2 |
2.LA.15 | Daomanite | CuPtAsS2 |
2.LA.20 | Vaughanite | TlHgSb4S7 |
2.LA.25 | Criddleite | TlAg2Au3Sb10S10 |
2.LA.30 | Fettelite | [Ag6As2S7][Ag10HgAs2S8] |
2.LA.35 | Chaméanite | (Cu,Fe)4As(Se,S)4 |
2.LA.40 | Arcubisite | Ag6CuBiS4 |
2.LA.45 | Mgriite | Cu3AsSe3 |
2.LA.50 | Benleonardite | [Ag6(Sb,As)2S6Te][Ag9Cu(S,Te)2Te2] |
2.LA.55 | Tsnigriite | Ag9SbTe3S3 |
2.LA.60 | Borovskite | Pd3SbTe4 |
2.LA.65 | Jonassonite | AuBi5S4 |
2.LA.65 | Nuwaite | Ni6GeS2 |
2.LA.65 | Butianite | Ni6SnS2 |
2.LA.75 | Spaltiite | Tl2Cu2As2S5 |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Raberite
mindat.org URL:
https://www.mindat.org/min-42792.html
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References for Raberite
Reference List:
Bindi, L., Nestola, F., Guastoni, A., Peruzzo, L., Ecker, M., Carampin, R. (2012) Raberite, Tl5Ag4As6SbS15, a new Tl-bearing sulfosalt from Lengenbach quarry, Binn valley, Switzerland: description and crystal structure. Mineralogical Magazine, 76 (5) 1153-1163 doi:10.1180/minmag.2012.076.5.07
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2012) New minerals and nomenclature modifications approved in 2012. CNMNC Newsletter No 13. Mineralogical Magazine, 76 (3) 807-817 doi:10.1180/minmag.2012.076.3.26
Localities for Raberite
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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Switzerland (TL) | |
| Bindi et al. (2012) |
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Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland