Hollingworthite
A valid IMA mineral species
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About Hollingworthite
Formula:
(Rh,Pt,Pd)AsS
Colour:
Medium gray, slight bluish tint in oil
Lustre:
Metallic
Hardness:
6 - 6½
Specific Gravity:
7.86 (Calculated)
Crystal System:
Isometric
Member of:
Name:
Named in 1965 by Eugen Friedrich Stumpfl and Andrew M. Clark in honor of Sidney Ewart Hollingworth [November 7, 1899 Flore, Northamptonshire, England, UK - June 23, 1966], professor of geology at University College, London, England, UK. Hollingworth specialized in the Pleistocene geology of Northern United Kingdom. The Hollingworth Cliffs in Antarctica are also named for him.
Unique Identifiers
Mindat ID:
1922
Long-form identifier:
mindat:1:1:1922:0
GUID
(UUID V4):
(UUID V4):
1dd54fdf-6016-4997-8336-47bf63f6ecc9
IMA Classification of Hollingworthite
Approved
IMA Formula:
RhAsS
First published:
1965
Classification of Hollingworthite
2.EB.25
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
B : M:S = 1:2, with Fe, Co, Ni, PGE, etc.
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
B : M:S = 1:2, with Fe, Co, Ni, PGE, etc.
2.12.3.8
2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.12.12
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 IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Hlw | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Hlw | 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 Hollingworthite
Metallic
Transparency:
Opaque
Colour:
Medium gray, slight bluish tint in oil
Hardness:
6 - 6½ on Mohs scale
Hardness:
VHN100=650 - 700 kg/mm2 - Vickers
Density:
7.86 g/cm3 (Calculated)
Optical Data of Hollingworthite
Reflectivity:
Wavelength | R |
---|---|
420nm | 50.0% |
440nm | 51.3% |
460nm | 51.9% |
480nm | 51.9% |
500nm | 51.5% |
520nm | 51.3% |
540nm | 50.8% |
560nm | 50.2% |
580nm | 49.7% |
600nm | 49.2% |
620nm | 48.5% |
640nm | 47.8% |
660nm | 47.2% |
680nm | 46.4% |
700nm | 45.6% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 51.9%.
Colour in reflected light:
In oil, medium gray, slightly bluish
Chemistry of Hollingworthite
Mindat Formula:
(Rh,Pt,Pd)AsS
Common Impurities:
Pt,Ir,Ru,Fe
Crystallography of Hollingworthite
Crystal System:
Isometric
Class (H-M):
m3 (2/m 3) - Diploidal
Space Group:
Pa3
Setting:
Pa3
Cell Parameters:
a = 5.783(14) Å
Unit Cell V:
193.40 Ă
Âł (Calculated from Unit Cell)
Z:
4
Morphology:
Euhedral to anhedral grains, to 40 ”m.
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) |
---|---|---|---|---|---|---|---|
0014012 | Hollingworthite | Foecker A J, Jeitschko W (2001) The atomic order of the pnictogen and chalcogen atoms in equiatomic ternary Journal of Solid State Chemistry 162 69-78 | 2001 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.31 Ă | (100) |
2.87 Ă | (100) |
1.74 Ă | (10) |
2.04 Ă | (90) |
1.112 Ă | (90) |
2.57 Ă | (80) |
1.29 Ă | (80) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3a: Earthâs earliest Hadean crust | >4.50 |
7 : Ultramafic igneous rocks | |
Near-surface Processes | |
26 : Hadean detrital minerals | |
High-đ 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 Hollingworthite
General Appearance of Type Material:
Grains to 40 ”m.
Place of Conservation of Type Material:
National School of Mines, Paris, France.
Associated Minerals at Type Locality:
Reference:
Stumpel, E.F., Clark, A.M. (1965) Hollingworthite, a new rhodium mineral, identified by electron probe microanalysis. American Mineralogist: 50: 1068-1074.
Synonyms of Hollingworthite
Other Language Names for Hollingworthite
Russian:Đ„ĐŸĐ»Đ»ĐžĐœĐłŃĐŸŃŃĐžŃ
Simplified Chinese:çĄ«ç ·éçż
Spanish:Hollingsworthita
Hollingworthita
Hollingworthita
Relationship of Hollingworthite to other Species
Member of:
Other Members of this group:
Andrieslombaardite | RhSbS | Iso. 2 3 : P21 3 |
Changchengite | IrBiS | Iso. 2 3 : P21 3 |
Cobaltite | CoAsS | Orth. mm2 : Pca21 |
Gersdorffite | NiAsS | Iso. m3 (2/m 3) : Pa3 |
Irarsite | (Ir,Ru,Rh,Pt)AsS | Iso. m3 (2/m 3) : Pa3 |
Jolliffeite | NiAsSe | Iso. m3 (2/m 3) : Pa3 |
Kalungaite | PdAsSe | Iso. m3 (2/m 3) : Pa3 |
Maslovite | PtBiTe | Iso. 2 3 : P21 3 |
Mayingite | IrBiTe | Iso. m3 (2/m 3) : Pa3 |
Michenerite | PdBiTe | Iso. 2 3 : P21 3 |
Milotaite | PdSbSe | Iso. 2 3 : P21 3 |
Padmaite | PdBiSe | Iso. 4 3 2 |
Platarsite | Pt(As,S)2 | Iso. m3 (2/m 3) : Pa3 |
Testibiopalladite | PdSbTe | Iso. |
Tolovkite | IrSbS | Iso. |
Ullmannite | NiSbS | Iso. 2 3 : P21 3 |
UM1991-19-Se:AsCo | (Co,Ni)AsSe | Iso. m3 (2/m 3) : Pm3 |
Willyamite | CoSbS |
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
6 photos of Hollingworthite associated with Gersdorffite | NiAsS |
5 photos of Hollingworthite associated with Laurite | RuS2 |
5 photos of Hollingworthite associated with Irarsite | (Ir,Ru,Rh,Pt)AsS |
5 photos of Hollingworthite associated with Palladoarsenide | Pd2As |
4 photos of Hollingworthite associated with Sperrylite | PtAs2 |
3 photos of Hollingworthite associated with Polyxene | (Pt,Fe,Cu,Ni,Pd,Rh) |
1 photo of Hollingworthite associated with Inaglyite | Cu3Pb(Ir,Pt)8S16 |
1 photo of Hollingworthite associated with Isoferroplatinum | Pt3Fe |
1 photo of Hollingworthite associated with Spinel | MgAl2O4 |
1 photo of Hollingworthite associated with Cobaltite | CoAsS |
Related Minerals - Strunz-mindat Grouping
2.EB. | Iridarsenite | (Ir,Ru)As2 |
2.EB. | Selenolaurite | RuSe2 |
2.EB. | Andrieslombaardite | RhSbS |
2.EB. | Kanatzidisite | (SbBiS3)2Te2 |
2.EB.05a | Aurostibite | AuSb2 |
2.EB.05b | Bambollaite | Cu(Se,Te)2 |
2.EB.05a | Cattierite | CoS2 |
2.EB.05a | Erlichmanite | OsS2 |
2.EB.05a | Fukuchilite | Cu3FeS8 |
2.EB.05a | Geversite | PtSb2 |
2.EB.05a | Hauerite | MnS2 |
2.EB.05a | Insizwaite | Pt(Bi,Sb)2 |
2.EB.05a | Krut'aite | CuSe2 |
2.EB.05a | Laurite | RuS2 |
2.EB.05a | Penroseite | (Ni,Co,Cu)Se2 |
2.EB.05a | Pyrite | FeS2 |
2.EB.05a | Sperrylite | PtAs2 |
2.EB.05a | Trogtalite | CoSe2 |
2.EB.05a | Vaesite | NiS2 |
2.EB.05a | VillamanĂnite | (Cu,Ni,Co,Fe)S2 |
2.EB.05a | Dzharkenite | FeSe2 |
2.EB.05a | Gaotaiite | Ir3Te8 |
2.EB.05a v | Cayeuxite | |
2.EB.10b | Alloclasite | Co1-xFexAsS |
2.EB.10d | Costibite | CoSbS |
2.EB.10a | Ferroselite | FeSe2 |
2.EB.10a | Frohbergite | FeTe2 |
2.EB.10c | Glaucodot | (Co0.50Fe0.50)AsS |
2.EB.10a | Kullerudite | NiSe2 |
2.EB.10a | Marcasite | FeS2 |
2.EB.10a | Mattagamite | CoTe2 |
2.EB.10e | Paracostibite | CoSbS |
2.EB.10e | Pararammelsbergite | NiAs2 |
2.EB.10f | Oenite | CoSbAs |
2.EB.10a | PetĆĂÄekite | CuSe2 |
2.EB.15a | Anduoite | (Ru,Os)As2 |
2.EB.15a | Clinosafflorite | CoAs2 |
2.EB.15a | Löllingite | FeAs2 |
2.EB.15a | Nisbite | NiSb2 |
2.EB.15a | Omeiite | (Os,Ru)As2 |
2.EB.15c | Paxite | CuAs2 |
2.EB.15a | Rammelsbergite | NiAs2 |
2.EB.15a | Safflorite | (Co,Ni,Fe)As2 |
2.EB.15b | SeinÀjokite | (Fe,Ni)(Sb,As)2 |
2.EB.20 | Arsenopyrite | FeAsS |
2.EB.20 | Gudmundite | FeSbS |
2.EB.20 | Osarsite | (Os,Ru)AsS |
2.EB.20 | Ruarsite | (Ru,Os)AsS |
2.EB.25 va | Antimony-bearing Gersdorffite | Ni(As,Sb)S |
2.EB.25 | Cobaltite | CoAsS |
2.EB.25 | Gersdorffite | NiAsS |
2.EB.25 | Irarsite | (Ir,Ru,Rh,Pt)AsS |
2.EB.25 | Jolliffeite | NiAsSe |
2.EB.25 | Krutovite | NiAs2 |
2.EB.25 | Maslovite | PtBiTe |
2.EB.25 | Michenerite | PdBiTe |
2.EB.25 | Padmaite | PdBiSe |
2.EB.25 | Platarsite | Pt(As,S)2 |
2.EB.25 | Testibiopalladite | PdSbTe |
2.EB.25 | Tolovkite | IrSbS |
2.EB.25 | Ullmannite | NiSbS |
2.EB.25 | Willyamite | CoSbS |
2.EB.25 | Changchengite | IrBiS |
2.EB.25 | Mayingite | IrBiTe |
2.EB.25 | Kalungaite | PdAsSe |
2.EB.25 | Milotaite | PdSbSe |
2.EB.25 | Paragersdorffite | Ni(As,S)2 |
2.EB.25 | Orthogersdorffite | NiAsS |
2.EB.30 | Urvantsevite | Pd(Bi,Pb)2 |
2.EB.35 | Rheniite | ReS2 |
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 Hollingworthite
mindat.org URL:
https://www.mindat.org/min-1922.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Hollingworthite
Reference List:
Localities for Hollingworthite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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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Konder alkaline-ultrabasic massif, Ayan-Maya district, Khabarovsk Krai, Russia