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![Mineralogy Database Mineralogy Database](/images/Hedyphane_Crystal.gif) |
Hollingworthite Mineral Data
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General Hollingworthite Information
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Chemical Formula: |
(Rh,Pt,Pd)AsS |
Composition: |
Molecular Weight = 237.90 gm |
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Arsenic 31.49 % As |
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Palladium 4.47 % Pd |
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Platinum 24.60 % Pt |
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Rhodium 25.95 % Rh |
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Sulfur 13.48 % S |
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______ |
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100.00 % |
Empirical Formula: |
Rh0.6Pt0.3Pd0.1AsS |
Environment: |
In a dunite pipe deposit and platinum deposits in layered ultramafic intrusives. |
IMA Status: |
Approved IMA 1965 |
Locality: |
Driekop and Onverwacht mines, Transvaal, South Africa. Link to MinDat.org Location Data. |
Name Origin: |
For Professor Sidney Ewart Hollingworth (1899-1966). |
Name Pronunciation: |
Hollingworthite + Pronunciation |
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Hollingworthite Image |
Images:
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Hollingworthite Laurite
Comments: Gray grain of hollingworthite (in the center of the picture) with very slightly darker gray laurite (at the right margin). Polished section (from microprobe analysis).
Location: Konder Mine, Konder alkaline-ultrabasic massif, Aldan shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia.
Scale: Picture size 0.1 mm.
© Thomas Witzke / Abraxas-Verlag |
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Images:
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Laurite Hollingworthite
Comments: Gray laurite with two smaller grains of hollingworthite (left and right from the laurite, very slightly lighter gray). Polished section (from microprobe analysis) in reflected light.
Location: Konder Mine, Konder alkaline-ultrabasic massif, Aldan shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia.
Scale: Picture size 0.15 mm.
© Thomas Witzke / Abraxas-Verlag |
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Hollingworthite Crystallography
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Cell Dimensions: |
a = 5.769, Z = 4; V = 192.00 Den(Calc)= 8.23 |
Crystal System: |
Isometric - Diploidal H-M Symbol (2/m 3) Space Group: P a3 |
X Ray Diffraction: |
By Intensity(I/Io): 1.74(1), 2.87(1), 3.31(1), |
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Physical Properties of Hollingworthite
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Color: |
Gray. |
Density: |
7.91 |
Diaphaneity: |
Opaque |
Hardness: |
6-6.5 - Orthoclase-Pyrite |
Luster: |
Metallic |
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Optical Properties of Hollingworthite
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RL Color: |
Medium gray, slightly bluish in oil. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Hollingworthite in Air
λ |
R |
![](../images/Reflect_scale_v.gif) |
∑ R(λ) |
420 nm |
50.00 |
![](../images/420nm.BMP) |
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440 nm |
51.30 |
![](../images/440nm.BMP) |
460 nm |
51.90 |
![](../images/460nm.BMP) |
480 nm |
51.90 |
![](../images/480nm.BMP) |
500 nm |
51.60 |
![](../images/500nm.BMP) |
520 nm |
51.30 |
![](../images/520nm.BMP) |
540 nm |
50.80 |
![](../images/540nm.BMP) |
560 nm |
50.20 |
![](../images/560nm.BMP) |
580 nm |
49.70 |
![](../images/580nm.BMP) |
600 nm |
49.20 |
![](../images/600nm.BMP) |
620 nm |
48.50 |
![](../images/620nm.BMP) |
640 nm |
47.80 |
![](../images/640nm.BMP) |
660 nm |
47.20 |
![](../images/660nm.BMP) |
680 nm |
46.40 |
![](../images/680nm.BMP) |
700 nm |
45.60 |
![](../images/700nm.BMP) |
Calculated Relative Intensity Colors of Hollingworthite in Air
Relative Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
190% |
R |
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Calculated Properties of Hollingworthite
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Electron Density: |
Bulk Density (Electron Density)=7.20 gm/cc note: Specific Gravity of Hollingworthite =8.23 gm/cc. |
Fermion Index: |
Fermion Index = 0.09 Boson Index = 0.91 |
Photoelectric: |
PEHollingworthite = 457.29 barns/electron U=PEHollingworthite x rElectron Density=3,290.56 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hollingworthite is Not Radioactive |
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Hollingworthite Classification
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Dana Class: |
02.12.03.08 (02)Sulfides - Including Selenides and Tellurides |
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(02.12)where Am Bn Xp, with (m+n):p=1:2 |
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(02.12.03)Cobaltite Group (Cubic or pseudocubic crystals) |
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02.12.03.01 Cobaltite CoAsS P ca21 mm2 |
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02.12.03.02 Gersdorffite NiAsS P 213 2 3 |
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02.12.03.03 Ullmannite NiSbS P 213 2 3 |
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02.12.03.04 Willyamite (Co,Ni)SbS P 213 2 3 |
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02.12.03.05 Tolovkite IrSbS P 213 2 3 |
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02.12.03.06 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3 |
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02.12.03.07 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3 |
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02.12.03.08 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3 |
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02.12.03.09 Jolliffeite (Ni,Co)AsSe P a3 2/m 3 |
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02.12.03.10 Padmaite PdBiSe P 213 2 3 |
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02.12.03.11 Michenerite (Pd,Pt)BiTe P 213 2 3 |
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02.12.03.12 Maslovite PtBiTe P 213 2 3 |
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02.12.03.13 Testibiopalladite PdTe(Sb,Te) P 213 2 3 |
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02.12.03.14 Changchengite! IrBiS P 213 2 3 |
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02.12.03.15 Milotaite! PdSbSe P 21/3 2 3 |
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02.12.03.16 Kalungaite! PdAsSe Pa3 2/m 3 |
Strunz Class: |
02.EB.25 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.E - Metal Sulfides, M:S � 1:2 |
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02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc. |
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02.EB.25 Cobaltite CoAsS P ca21 mm2 |
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02.EB.25 Changchengite! IrBiS P 213 2 3 |
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02.EB.25 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3 |
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02.EB.25 Gersdorffite NiAsS P 213 2 3 |
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02.EB.25 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3 |
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02.EB.25 Jolliffeite (Ni,Co)AsSe P a3 2/m 3 |
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02.EB.25 Krutovite NiAs2 P a3 2/m 3 |
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02.EB.25 Michenerite (Pd,Pt)BiTe P 213 2 3 |
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02.EB.25 Maslovite PtBiTe P 213 2 3 |
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02.EB.25 Mayingite IrBiTe P a3 2/m 3 |
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02.EB.25 Padmaite PdBiSe P 213 2 3 |
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02.EB.25 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3 |
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02.EB.25 Ullmannite NiSbS P 213 2 3 |
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02.EB.25 Tolovkite IrSbS P 213 2 3 |
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02.EB.25 Testibiopalladite PdTe(Sb,Te) P 213 2 3 |
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02.EB.25 Willyamite (Co,Ni)SbS P 213 2 3 |
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02.EB.25 Kalungaite! PdAsSe Pa3 2/m 3 |
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02.EB.25 Milotaite! PdSbSe P 21/3 2 3 |
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Other Hollingworthite Information
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References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
See Also: |
Links to other databases for Hollingworthite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Hollingworthite Specimen Label here :
Hollingworthite
(Rh,Pt,Pd)AsS
Dana No: 02.12.03.08 Strunz No: 02.EB.25
Locality:
Notes:
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