Isomertieite
A valid IMA mineral species
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About Isomertieite
Formula:
Pd11Sb2As2
Colour:
Pale yellow in reflected light
Lustre:
Metallic
Hardness:
5½
Specific Gravity:
10.33 (Calculated)
Crystal System:
Isometric
Member of:
Name:
Named for being the isometric dimorph of pseudomertieite, which itself was previously named mertieite-I. The root name is for John Beaver Mertie, Jr. (22 January 1888, Baltimore, Maryland, USA - 7 December 1980, Rockville, Maryland, USA), geologist with the United States Geological Survey who spent 30 years geologically mapping Alaska.
Type Locality:
Dimorph of:
This page provides mineralogical data about Isomertieite.
Unique Identifiers
Mindat ID:
2055
Long-form identifier:
mindat:1:1:2055:4
GUID
(UUID V4):
(UUID V4):
4bc5a46e-0973-4b2f-8f6d-0a59fa1a5e50
IMA Classification of Isomertieite
Approved
First published:
1974
Classification of Isomertieite
2.AC.15a
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
2.16.2.1
2 : SULFIDES
16 : Miscellaneous
2 : SULFIDES
16 : Miscellaneous
3.12.37
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.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Ism | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Ism | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Isomertieite
Metallic
Transparency:
Opaque
Colour:
Pale yellow in reflected light
Hardness:
5½ on Mohs scale
Hardness:
VHN100=587 - 597 kg/mm2 - Vickers
Density:
10.33 g/cm3 (Calculated)
Optical Data of Isomertieite
Anisotropism:
Weak
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
400nm | 43.2% | 30.8% |
420nm | 44.1% | 31.5% |
440nm | 45.5% | 32.6% |
460nm | 47.2% | 34.2% |
470nm | 48.2% | 35.15% |
480nm | 49.15% | 36.2% |
500nm | 51.2% | 38.4% |
520nm | 53.1% | 40.3% |
540nm | 54.75% | 42.0% |
546nm | 55.2% | 42.4% |
560nm | 56.2% | 43.5% |
580nm | 57.4% | 44.8% |
589nm | 58.0% | 45.4% |
600nm | 58.55% | 46.0% |
620nm | 59.4% | 46.9% |
640nm | 60.1% | 47.6% |
650nm | 60.3% | 47.9% |
660nm | 60.5% | 48.15% |
680nm | 60.8% | 48.45% |
700nm | 61.1% | 48.75% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 61.1%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Pale yellow-white
Chemistry of Isomertieite
Mindat Formula:
Pd11Sb2As2
Elements listed:
Common Impurities:
Au,Cu
Crystallography of Isomertieite
Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Fd3m
Setting:
Fd3m
Cell Parameters:
a = 12.283 Å
Unit Cell V:
1,853.16 ų (Calculated from Unit Cell)
Z:
16
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) |
---|---|---|---|---|---|---|---|
0014175 | Isomertieite | Shi N, Ma Z, Zhang N, Ding X (1978) Crystal structure of isomertieite (fengluanite) Kexue Tongbao 23 499-501 | 1978 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.356 Å | (90) |
2.167 Å | (100) |
1.533 Å | (70) |
1.446 Å | (60) |
1.253 Å | (70) |
1.188 Å | (70) |
0.996 Å | (70) |
Comments:
Sample from Itabira, Brazil.
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]) | |
Stage 4b: Highly evolved igneous rocks | >3.0 |
37 : Layered igneous intrusions and related PGE minerals |
Type Occurrence of Isomertieite
Place of Conservation of Type Material:
The Natural History Museum, London, England: BM 1934,72; National Museum of Natural History, Washington, D.C., USA: 142504.
Geological Setting of Type Material:
In heavy-metal concentrates from Precambrian iron-precious metal deposits.
Associated Minerals at Type Locality:
Reference:
Clark, A.M., Criddle, A.J., Fejer, E.E. (1974) Palladium arsenide-antimonides from Itabira, Minas Gerais, Brazil. Mineralogical Magazine: 39: 528-543.
Synonyms of Isomertieite
Other Language Names for Isomertieite
Varieties of Isomertieite
Fengluanite | An antimony-rich variety of Isomertieite. |
Relationship of Isomertieite to other Species
Common Associates
Associated Minerals Based on Photo Data:
4 photos of Isomertieite associated with Caysichite-(Y) | (Ca,Yb,Er)4Y4(Si8O20)(CO3)6(OH) · 7H2O |
3 photos of Isomertieite associated with Mertieite | Pd8Sb2.5As0.5 |
2 photos of Isomertieite associated with Gold | Au |
1 photo of Isomertieite associated with Arsenopalladinite | Pd8(As,Sb)3 |
1 photo of Isomertieite associated with Bornite | Cu5FeS4 |
1 photo of Isomertieite associated with Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
1 photo of Isomertieite associated with Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
1 photo of Isomertieite associated with Pseudomertieite | Pd11(Sb,As)4 |
1 photo of Isomertieite associated with Zincochromite | ZnCr2O4 |
1 photo of Isomertieite associated with Nipalarsite | Ni8Pd3As4 |
Related Minerals - Strunz-mindat Grouping
2.AC. | Törnroosite | Pd11As2Te2 |
2.AC. | Vadlazarenkovite | Pd8Bi1.5Te1.25As0.25 |
2.AC.05a | Atheneite | Pd2As0.75Hg0.25 |
2.AC.05b | Vincentite | Pd3As |
2.AC.10c | Arsenopalladinite | Pd8(As,Sb)3 |
2.AC.10b | Mertieite | Pd8Sb2.5As0.5 |
2.AC.10a | Stillwaterite | Pd8As3 |
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 Isomertieite
mindat.org URL:
https://www.mindat.org/min-2055.html
Please feel free to link to this page.
Please feel free to link to this page.
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Mineral Dealers:
References for Isomertieite
Reference List:
Fleischer, Michael, Cabri, Louis J., Pabst, Adolf (1980) New Mineral Names. American Mineralogist, 65 (3-4) 406-408
Clark, A. M., Criddle, A. J. (1982) Palladium minerals from Hope's Nose, Torquay, Devon. Mineralogical Magazine, 46 (340) 371-377 doi:10.1180/minmag.1982.046.340.13
Criddle, A. J., Stanley, C. J. (1993) Data file. In Quantitative Data File for Ore Minerals. Springer Netherlands. p.1-635. doi:10.1007/978-94-011-1486-8_1p.262
Kojonen, K. K., McDonald, A. M., Stanley, C. J., Johanson, B. (2011) Törnroosite, Pd11As2Te2, a new mineral species related to isomertieite from Miessijoki, Finnish Lapland, Finland. The Canadian Mineralogist, 49 (6) 1643-1651 doi:10.3749/canmin.49.6.1643
Localities for Isomertieite
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.
Brazil | |
| Menez +3 other references |
| App.EarthSci 111:74 -- 80. +1 other reference |
Mineralogical Magazine (1974) | |
MinMag 66:327-336 +1 other reference | |
| Varajão et al. (2000) |
| Canadian Mineralogist Vol. 40 |
Teixeira (2014) | |
Cabral et al. (2002) +5 other references | |
Canada | |
| Robb (2020) |
| N Farhangi |
| Mulja & Mitchell (1990) |
Ames et al. (2017) | |
Good et al. (2017) | |
| Louis J. Cabri and J.H. Gilles Laflamme (1979) +2 other references |
D. H. Watkinson and G. Dunning v (1979) +1 other reference | |
Canadian Mineralogist 30:121-136 | |
| 5th International Platinum Symposium ... +1 other reference |
| Mulja et al. (1990) |
China | |
| Zuxiang Yu et al. (1974) +2 other references |
Yu Zuxiang et al. (1974) | |
| Bilun Luo (1979) |
Finland | |
Törnroos Ragnar | |
| Kojonen et al. (2007) +4 other references |
| Kari Kojonen (2012) |
Kojonen et al. (2014) | |
| 5th International Platinum Symposium ... +1 other reference |
Econ Geol (1986) | |
| Iljina +1 other reference |
Papunen (1986) | |
| Guice et al. (2017) +1 other reference |
| Pelayo Barrón Francisco (2020) |
France | |
| Y. Moëlo : "Compte-rendu de la ... +1 other reference |
Greece | |
| Katie A. McFall et al. (2018) |
| Argyrios Kapsiotis et al. (2010) |
India | |
| Alapieti et al. (2005) |
Madagascar | |
| Econ Geol (1994) +1 other reference |
Morocco | |
| El Ghorfi et al. (2006) |
Myanmar | |
| 5th International Platinum Symposium ... +1 other reference |
Russia | |
| Gornostayev et al. (1999) |
| Lennikov et al. (2004) |
Barkov et al. (2016) +1 other reference | |
| Moralev et al. (2005) |
| Malitch et al. (2013) |
| Econ Geol (1986) +1 other reference |
[AmMin 85:265] | |
| Groshev +7 other references |
www.duke.edu (2003) | |
Grokhovskaya et al. (2009) | |
Grokhovskaya et al. (2019) | |
| [AmMin 65:198] +2 other references |
Grokhovskaya et al. (2000) +1 other reference | |
| - (2014) |
| Grishaenko et al. (2007) |
| Geological Society of America Abstracts ... +1 other reference |
| Stepanov et al. (2023) |
| Stepanov et al. (2023) |
| Murzin et al. (2022) |
| Barkov et al. (2002) |
South Africa | |
... +1 other reference | |
| Armitage et al. (2002) |
Manyeruke (2007) | |
UK | |
| Mineralogical Magazine 1982 46 : 371-377 +2 other references |
| Power et al. (2000) |
USA | |
| Econ Geol (1992) +1 other reference |
| Chusi Li et al. (2008) |
Zimbabwe | |
| Oberthür et al. (2013) |
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Itabira, Minas Gerais, Brazil