Palarstanide
A valid IMA mineral species
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About Palarstanide
Formula:
Pd5(Sn,As)2
Originally assumed to be Pd8(As,Sn)3.
Colour:
steel-gray
Lustre:
Metallic
Hardness:
5
Specific Gravity:
10.27 (Calculated)
Crystal System:
Hexagonal
Name:
Named for the composition; palladium, arsenic, and tin (Latin: stannum).
This page provides mineralogical data about Palarstanide.
Unique Identifiers
Mindat ID:
3064
Long-form identifier:
mindat:1:1:3064:5
IMA Classification of Palarstanide
Approved
Approval year:
1976
First published:
1981
Classification of Palarstanide
2.AC.20b
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
A : Alloys
C : Alloys of metalloids with PGE
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
A : Alloys
C : Alloys of metalloids with PGE
2.3.3.2
2 : SULFIDES
3 : AmBnXp, with (m+n):p = 5:2
2 : SULFIDES
3 : AmBnXp, with (m+n):p = 5:2
3.12.28
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
12 : Sulphides etc. of the platinum metals
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
12 : Sulphides etc. of the platinum metals
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 for Standard |
|---|---|---|
| Pls | 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 Palarstanide
Metallic
Transparency:
Opaque
Colour:
Steel-gray
Hardness:
5 on Mohs scale
Hardness:
VHN50=470(30) kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Perfect
{0001}
{0001}
Density:
10.27 g/cm3 (Calculated)
Optical Data of Palarstanide
Type:
Uniaxial (+)
Anisotropism:
Weak, dark gray to brownish-gray
Bireflectance:
Bireflectance is barely perceptible in air, but it is distinct in oil immersion
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 430nm | 45.6% | 48.8% |
| 460nm | 48.1% | 51.1% |
| 490nm | 50.0% | 52.4% |
| 520nm | 52.1% | 53.5% |
| 550nm | 53.3% | 54.7% |
| 580nm | 55.1% | 56.4% |
| 610nm | 56.7% | 57.2% |
| 640nm | 58.5% | 59.3% |
| 670nm | 58.7% | 60.0% |
| 700nm | 60.0% | 61.0% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 61.0%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Grayish-white with a slight rose tint
Pleochroism:
Weak
Comments:
Distinct in oil
Chemistry of Palarstanide
Mindat Formula:
Pd5(Sn,As)2
Originally assumed to be Pd8(As,Sn)3.
Originally assumed to be Pd8(As,Sn)3.
Elements listed:
Common Impurities:
Pt,Au,Cu,Pb,Sb,Bi
Crystallography of Palarstanide
Crystal System:
Hexagonal
Cell Parameters:
a = 7.50 Å, c = 10.34 Å
Ratio:
a:c = 1 : 1.379
Unit Cell V:
503.70 ų (Calculated from Unit Cell)
Z:
3
Comment:
Point Group: n.d.; Space Group: n.d
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.22 Å | (10) |
| 2.50 Å | (4) |
| 1.986 Å | (4) |
| 1.784 Å | (3) |
| 1.187 Å | (3) |
| 2.46 Å | (2) |
| 2.20 Å | (2) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 37 : Layered igneous intrusions and related PGE minerals |
Type Occurrence of Palarstanide
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 84283.
Mineralogical Museum of the Moscow Geological-Exploration Institute.
Mineralogical Museum of the Moscow Geological-Exploration Institute.
Synonyms of Palarstanide
Other Language Names for Palarstanide
Dutch:Palarstanide
German:Palarstanid
Common Associates
Associations Based on Photo Data:
| 7 photos of Palarstanide associated with Atokite | (Pd,Pt)3Sn |
| 6 photos of Palarstanide associated with Taimyrite | (Pd,Cu,Pt)3Sn |
| 4 photos of Palarstanide associated with Polarite | Pd(Bi,Pb) |
| 4 photos of Palarstanide associated with Native Silver | Ag |
| 4 photos of Palarstanide associated with Sperrylite | PtAs2 |
| 3 photos of Palarstanide associated with Pentlandite | (NixFey)Σ9S8 |
| 2 photos of Palarstanide associated with Cubanite | CuFe2S3 |
| 2 photos of Palarstanide associated with Galena | PbS |
| 2 photos of Palarstanide associated with Kotulskite | Pd(Te,Bi)2-x (x ≈ 0.4) |
| 2 photos of Palarstanide associated with Rustenburgite | (Pt,Pd)3Sn |
Related Minerals - Strunz-mindat Grouping
| 2.AC. | Vadlazarenkovite | Pd8Bi1.5Te1.25As0.25 |
| 2.AC. | Törnroosite | Pd11As2Te2 |
| 2.AC.05b | Vincentite | Pd3As |
| 2.AC.05a | Atheneite | Pd2As0.75Hg0.25 |
| 2.AC.10c | Arsenopalladinite | Pd8(As,Sb)3 |
| 2.AC.10b | Mertieite | Pd8Sb2.5As0.5 |
| 2.AC.10a | Stillwaterite | Pd8As3 |
| 2.AC.15a | Isomertieite | Pd11Sb2As2 |
| 2.AC.15a | Miessiite | Pd11Te2Se2 |
| 2.AC.15b | Pseudomertieite | Pd11(Sb,As)4 |
| 2.AC.20c | Menshikovite | Pd3Ni2As3 |
| 2.AC.20a | Stibiopalladinite | Pd5Sb2 |
| 2.AC.25c | Palladodymite | (Pd,Rh)2As |
| 2.AC.25d | Naldrettite | Pd2Sb |
| 2.AC.25b | Rhodarsenide | (Rh,Pd)2As |
| 2.AC.25e | Majakite | PdNiAs |
| 2.AC.25a | Palladoarsenide | Pd2As |
| 2.AC.25f | Palladobismutharsenide | Pd2(As,Bi) |
| 2.AC.30 | 'UM1999-02-As:NiRh' | (Rh,Ni)7As4 |
| 2.AC.30 | Polkanovite | Rh12As7 |
| 2.AC.35b | Ungavaite | Pd4Sb3 |
| 2.AC.35a | Genkinite | Pt4Sb3 |
| 2.AC.40 | Polarite | Pd(Bi,Pb) |
| 2.AC.45a | Froodite | α-PdBi2 |
| 2.AC.50 | Viteite | Pd5InAs |
| 2.AC.50 | Nipalarsite | Ni8Pd3As4 |
Other Information
Magnetism:
Non-Magnetic
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 Palarstanide
mindat.org URL:
https://www.mindat.org/min-3064.html
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Please feel free to link to this page.
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References for Palarstanide
Localities for Palarstanide
Showing 24 localities.
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.
Canada | |
| Liferovich & Mitchell pers. comm. L. ... |
| Ames et al. (2017) | |
Finland | |
| Iljina et al. (1989) |
Greenland | |
| Holwell et al. (2015) +1 other reference |
Russia | |
| - (2016) +1 other reference |
| Gritsenko et al. (2022) |
| Gritsenko et al. (2022) | |
| Begizov et al. (1981) +3 other references |
| Shvedov et al. (2015) |
| Gabov (2010) |
| Groshev +6 other references |
| Groshev +6 other references | |
| Groshev +7 other references | |
| Grokhovskaya et al. (2009) |
| Grokhovskaya et al. (2019) | |
| Grokhovskaya et al. (2003) |
| Y.A. et al. (2019) |
| - (2014) |
| Коневин et al. (2020) |
South Africa | |
| McCreesh et al. (2018) |
| Holwell et al. (2007) |
| Holwell et al. (2006) | |
USA | |
| ... |
| ID by microprobe on polished section |
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Oktyabrsky Mine, Talnakh Cu-Ni Deposit, Norilsk-Talnakh Mining Region, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia