Mertieite
A valid IMA mineral species
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About Mertieite
Formula:
Pd8Sb2.5As0.5
Colour:
Brassy yellow
Lustre:
Metallic
Hardness:
6
Specific Gravity:
11.2 (Calculated)
Crystal System:
Trigonal
Name:
For John Beaver Mertie, Jr. (22 January 1888, Baltimore, Maryland, USA - 7 December 1980, Rockville, Maryland, USA), was geologist with the United States Geological Survey. He spent 30 years geologically mapping Alaska. For many years it was named mertieite-II; it was renamed to mertieite in 2022.
Isotypic with synthetic Pd8Sb3.
Isostructural with vadlazarenkovite and may be understood as its (SbAs)-analogue.
Isostructural with vadlazarenkovite and may be understood as its (SbAs)-analogue.
Unique Identifiers
Mindat ID:
2655
Long-form identifier:
mindat:1:1:2655:6
GUID
(UUID V4):
(UUID V4):
c9e3d9c4-b9e5-457d-9315-bf17f3322ce3
IMA Classification of Mertieite
Classification of Mertieite
2.AC.10b
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
2.16.3.1
2 : SULFIDES
16 : Miscellaneous
2 : SULFIDES
16 : Miscellaneous
3.12.39
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 |
---|---|---|
Met-II | 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 Mertieite
Metallic
Transparency:
Opaque
Colour:
Brassy yellow
Hardness:
6 on Mohs scale
Hardness:
VHN50=561 - 593 kg/mm2 - Vickers
Density:
11.2 g/cm3 (Calculated)
Comment:
Calculated value for Sb:As = 5:1.
Optical Data of Mertieite
Anisotropism:
Distinct, dark blue-gray to dark brown.
Reflectivity:
Wavelength | R |
---|---|
420nm | 45.0% |
440nm | 44.4% |
460nm | 44.7% |
480nm | 45.6% |
500nm | 47.0% |
520nm | 48.7% |
540nm | 50.1% |
560nm | 51.3% |
580nm | 52.3% |
600nm | 53.2% |
620nm | 54.0% |
640nm | 54.9% |
660nm | 55.7% |
680nm | 56.5% |
700nm | 57.6% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 57.6%.
Colour in reflected light:
Brassy yellow.
Chemistry of Mertieite
Mindat Formula:
Pd8Sb2.5As0.5
Elements listed:
Common Impurities:
Cu,Sn
Crystallography of Mertieite
Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
R3c
Cell Parameters:
a = 7.6 Å, c = 42.9 Å
Ratio:
a:c = 1 : 5.645
Unit Cell V:
2,145.93 ų (Calculated from Unit Cell)
Comment:
For two slightly different crystals, Karimova et al. (2018) give: a = 7.5172(3), c = 43.037(2) Å, V = 2106.1(2) Å3 (I); a = 7.5135(4), c = 43.003(3) Å, V = 2102.4(3) Å3.
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) |
---|---|---|---|---|---|---|---|
0009331 | Mertieite | Marsh R E (1994) The centrosymmetric - noncentrosymmetric ambiguity: some more examples Acta Crystallographica A50 450-455 | 1994 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.286 Å | (100) |
2.177 Å | (90) |
1.226 Å | (70) |
1.200 Å | (70) |
0.9355 Å | (60) |
2.022 Å | (50) |
1.577 Å | (40) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
26 : Hadean detrital minerals | |
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 Mertieite
General Appearance of Type Material:
Anhedral grains, to about 0.5 mm.
Place of Conservation of Type Material:
n.d.
Synonyms of Mertieite
Other Language Names for Mertieite
Common Associates
Associated Minerals Based on Photo Data:
3 photos of Mertieite associated with Isomertieite | Pd11Sb2As2 |
3 photos of Mertieite associated with Caysichite-(Y) | (Ca,Yb,Er)4Y4(Si8O20)(CO3)6(OH) · 7H2O |
1 photo of Mertieite associated with Isoferroplatinum | Pt3Fe |
1 photo of Mertieite associated with Zincochromite | ZnCr2O4 |
1 photo of Mertieite associated with Magnesiochromite-Spinel Series |
Related Minerals - Strunz-mindat Grouping
2.AC. | Törnroosite | Pd11As2Te2 |
2.AC.05a | Atheneite | Pd2As0.75Hg0.25 |
2.AC.05b | Vincentite | Pd3As |
2.AC.10c | Arsenopalladinite | Pd8(As,Sb)3 |
2.AC.10a | Stillwaterite | Pd8As3 |
2.AC.15a | Isomertieite | Pd11Sb2As2 |
2.AC.15b | Pseudomertieite | Pd11(Sb,As)4 |
2.AC.15a | Miessiite | Pd11Te2Se2 |
2.AC.20b | Palarstanide | Pd5(Sn,As)2 |
2.AC.20a | Stibiopalladinite | Pd5Sb2 |
2.AC.20c | Menshikovite | Pd3Ni2As3 |
2.AC.25e | Majakite | PdNiAs |
2.AC.25a | Palladoarsenide | Pd2As |
2.AC.25f | Palladobismutharsenide | Pd2(As,Bi) |
2.AC.25c | Palladodymite | (Pd,Rh)2As |
2.AC.25b | Rhodarsenide | (Rh,Pd)2As |
2.AC.25d | Naldrettite | Pd2Sb |
2.AC.30 | UM1999-02-As:NiRh | (Rh,Ni)7As4 |
2.AC.30 | Polkanovite | Rh12As7 |
2.AC.35a | Genkinite | Pt4Sb3 |
2.AC.35b | Ungavaite | Pd4Sb3 |
2.AC.40 | Polarite | Pd(Bi,Pb) |
2.AC.45a | Froodite | α-PdBi2 |
2.AC.50 | Nipalarsite | Ni8Pd3As4 |
2.AC.50 | Viteite | Pd5InAs |
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 Mertieite
mindat.org URL:
https://www.mindat.org/min-2655.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Mertieite
Reference List:
Localities for Mertieite
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.
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Quick NavTopAbout MertieiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Mount Filipp, Sobolevsky District, Kamchatka Krai, Russia