UM1973-01-As:NiPd
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Formula:
~(Ni,Pd)7As3
In the original paper there are two compounds given: (Ni,Pd)5+xAs2 and beta-(Ni,Pd)2+xAs2, of similar properties
Crystal System:
Hexagonal
From Talnakh deposit, Russia.
Data for the (Ni,Pd)5+xAs2 phase (all further data concerning material of the second reported chemical analysis): isometric, elongated, lens-like, polygonal crystalline grains, 1-100 microns in diameter; with chalcopyrite, cubanite, polarite, Ag-Au alloys, sperrylite, other PGM, talnakhite, magnetite, galena, and silicate minerals.
Possibly the Ni-dominant analogue of majakite.
Data for the (Ni,Pd)5+xAs2 phase (all further data concerning material of the second reported chemical analysis): isometric, elongated, lens-like, polygonal crystalline grains, 1-100 microns in diameter; with chalcopyrite, cubanite, polarite, Ag-Au alloys, sperrylite, other PGM, talnakhite, magnetite, galena, and silicate minerals.
Possibly the Ni-dominant analogue of majakite.
Unique Identifiers
Mindat ID:
47271
Long-form identifier:
mindat:1:1:47271:7
Similar Names
| UM1970-01-As:NiPd | Pd3Ni4As3 | |
| UM1975-04-As:NiPdS | ~(Pd,Ni)(As,S) | |
| UM1976-01-As:BiPd | Pd2(As,Bi) | |
| UM1976-03-As:NiPd | Pd1.19Ni0.71As | |
| UM1984-04-As:NiPd | (Ni,Pd)3As4 | |
| UM1995-44-Sn:Pd | Valid as an unnamed mineral | |
| UM2003-40-As:NiPd | Valid as an unnamed mineral | Ni6Pd2As3 |
| UM2007-02-As:NiPd | Valid as an unnamed mineral | (Pd,Ni)7As4 |
Physical Properties of UM1973-01-As:NiPd
Hardness:
VHN100=482 - 597 - Vickers
Optical Data of UM1973-01-As:NiPd
Anisotropism:
weak, brownish-grey
Bireflectance:
weak (air)
Reflectivity:
| Wavelength | R1 (%) |
|---|---|
| 460nm | 48.6% |
| 550nm | 50.3% |
| 580nm | 51.3% |
| 640nm | 53.7% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 53.7%.
Colour in reflected light:
pale lilac grey with brownish or rose (?) tinge
Chemistry of UM1973-01-As:NiPd
Mindat Formula:
~(Ni,Pd)7As3
In the original paper there are two compounds given: (Ni,Pd)5+xAs2 and beta-(Ni,Pd)2+xAs2, of similar properties
In the original paper there are two compounds given: (Ni,Pd)5+xAs2 and beta-(Ni,Pd)2+xAs2, of similar properties
Elements listed:
Crystallography of UM1973-01-As:NiPd
Crystal System:
Hexagonal
Cell Parameters:
a = 9.910 Å, c = 6.601 Å
Ratio:
a:c = 1 : 0.666
Unit Cell V:
561.42 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.19 Å | (100) |
| 1.989 Å | (100) |
| 2.65 Å | (80) |
| 2.29 Å | (60) |
Other Information
Notes:
ocasionally etched by 1:1 HCl
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 UM1973-01-As:NiPd
mindat.org URL:
https://www.mindat.org/min-47271.html
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References for UM1973-01-As:NiPd
Reference List:
Localities for UM1973-01-As:NiPd
Showing 1 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.
Russia | |
| Razin et al. (1973) +1 other reference |
