Atokite (original) (raw)
Specific Gravity:
14.19 (Calculated)
Name:
For the type locality, the Atok mine.
Long-form identifier:
mindat:1:1:413:6
7de78d3b-f6d1-486d-9ba4-10ea29f10191
1.AG.10
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
G : PGE-metal alloys
1.2.5.3
1 : NATIVE ELEMENTS AND ALLOYS
2 : Platinum Group Metals and Alloys
1.72
1 : Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Ato | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| At | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Comment:
in reflected light
Hardness:
VHN25=357 kg/mm2 - Vickers
Density:
14.19 g/cm3 (Calculated)
Anisotropism:
Slight, due to strain
Reflectivity:
| Wavelength | R1 | R2 |
|---|---|---|
| 480nm | 57.4% | 60.8% |
| 546nm | 59.2% | 65.1% |
| 589nm | 60.4% | 63.5% |
| 656nm | 62.2% | 65.8% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 65.8%.
R1 shown in black, R2 shown in red
Colour in reflected light:
light cream
Mindat Formula:
(Pd,Pt)3Sn
Class (H-M):
m_3_m _(_4/_m_32/m ) - Hexoctahedral
Cell Parameters:
a = 3.991 Å
Unit Cell V:
63.57 ų (Calculated from Unit Cell)
Morphology:
Small grains less than 100 microns.
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.295 Å | (100) |
| 1.992 Å | (80) |
| 1.408 Å | (90) |
| 1.202 Å | (100) |
| 0.9153 Å | (90) |
| 0.8922 Å | (80) |
| 0.8145 Å | (90) |
Comments:
Merensky Reef, South Africa.
Geological Setting of Type Material:
As very sparse grains in concentrates of ore.
Associated Minerals Based on Photo Data:
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
- 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.