Mineralogy Database

Hollingworthite Mineral Data

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General Hollingworthite Information

Help on Chemical  Formula: Chemical Formula: (Rh,Pt,Pd)AsS
Help on Composition: Composition: Molecular Weight = 237.90 gm
   Arsenic    31.49 %  As
   Palladium   4.47 %  Pd
   Platinum   24.60 %  Pt
   Rhodium    25.95 %  Rh
   Sulfur     13.48 %  S
             ______ 
             100.00 % 
Help on Empirical Formula: Empirical Formula: Rh0.6Pt0.3Pd0.1AsS
Help on Environment: Environment: In a dunite pipe deposit and platinum deposits in layered ultramafic intrusives.
Help on IMA Status: IMA Status: Approved IMA 1965
Help on Locality: Locality: Driekop and Onverwacht mines, Transvaal, South Africa. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Professor Sidney Ewart Hollingworth (1899-1966).
Help on Name Pronunciation: Name Pronunciation: Hollingworthite + Pronunciation Say HOLLINGWORTHITE
 

Hollingworthite Image

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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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  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

Hollingworthite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 5.769, Z = 4; V = 192.00 Den(Calc)= 8.23
Help on Crystal System: Crystal System: Isometric - Diploidal H-M Symbol (2/m 3) Space Group: P a3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.74(1), 2.87(1), 3.31(1),
 

Physical Properties of Hollingworthite

Help on Color: Color: Gray.
Help on Density: Density: 7.91
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 6-6.5 - Orthoclase-Pyrite
Help on Luster: Luster: Metallic
 

Optical Properties of Hollingworthite

Help on RL Color: RL Color: Medium gray, slightly bluish in oil.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Hollingworthite in Air
λ R  ∑ R(λ) 
 420 nm   50.00   
 440 nm   51.30 
 460 nm   51.90 
 480 nm   51.90 
 500 nm   51.60 
 520 nm   51.30 
 540 nm   50.80 
 560 nm   50.20 
 580 nm   49.70 
 600 nm   49.20 
 620 nm   48.50 
 640 nm   47.80 
 660 nm   47.20 
 680 nm   46.40 
 700 nm   45.60 
Calculated Relative Intensity Colors of Hollingworthite in Air
Relative
Intensity
   0%   20%   40%   60%   80% 100% 120% 140% 160% 180% 190%
R                      
 

Calculated Properties of Hollingworthite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.20 gm/cc
note: Specific Gravity of Hollingworthite =8.23 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PEHollingworthite = 457.29 barns/electron
U=PEHollingworthite x rElectron Density=3,290.56 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hollingworthite is Not Radioactive
 

Hollingworthite Classification

Help on  Dana Class: Dana Class: 02.12.03.08 (02)Sulfides - Including Selenides and Tellurides
  (02.12)where Am Bn Xp, with (m+n):p=1:2
  (02.12.03)Cobaltite Group (Cubic or pseudocubic crystals)
 
02.12.03.01 Cobaltite CoAsS P ca21 mm2
 
02.12.03.02 Gersdorffite NiAsS P 213 2 3
 
02.12.03.03 Ullmannite NiSbS P 213 2 3
 
02.12.03.04 Willyamite (Co,Ni)SbS P 213 2 3
 
02.12.03.05 Tolovkite IrSbS P 213 2 3
 
02.12.03.06 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3
 
02.12.03.07 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3
 
02.12.03.08 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3
 
02.12.03.09 Jolliffeite (Ni,Co)AsSe P a3 2/m 3
 
02.12.03.10 Padmaite PdBiSe P 213 2 3
 
02.12.03.11 Michenerite (Pd,Pt)BiTe P 213 2 3
 
02.12.03.12 Maslovite PtBiTe P 213 2 3
 
02.12.03.13 Testibiopalladite PdTe(Sb,Te) P 213 2 3
 
02.12.03.14 Changchengite! IrBiS P 213 2 3
 
02.12.03.15 Milotaite! PdSbSe P 21/3 2 3
 
02.12.03.16 Kalungaite! PdAsSe Pa3 2/m 3
Help on  Strunz Class: Strunz Class: 02.EB.25 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.E - Metal Sulfides, M:S � 1:2
  02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc.
 
02.EB.25 Cobaltite CoAsS P ca21 mm2
 
02.EB.25 Changchengite! IrBiS P 213 2 3
 
02.EB.25 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3
 
02.EB.25 Gersdorffite NiAsS P 213 2 3
 
02.EB.25 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3
 
02.EB.25 Jolliffeite (Ni,Co)AsSe P a3 2/m 3
 
02.EB.25 Krutovite NiAs2 P a3 2/m 3
 
02.EB.25 Michenerite (Pd,Pt)BiTe P 213 2 3
 
02.EB.25 Maslovite PtBiTe P 213 2 3
 
02.EB.25 Mayingite IrBiTe P a3 2/m 3
 
02.EB.25 Padmaite PdBiSe P 213 2 3
 
02.EB.25 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3
 
02.EB.25 Ullmannite NiSbS P 213 2 3
 
02.EB.25 Tolovkite IrSbS P 213 2 3
 
02.EB.25 Testibiopalladite PdTe(Sb,Te) P 213 2 3
 
02.EB.25 Willyamite (Co,Ni)SbS P 213 2 3
 
02.EB.25 Kalungaite! PdAsSe Pa3 2/m 3
 
02.EB.25 Milotaite! PdSbSe P 21/3 2 3
 

Other Hollingworthite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: 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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Hollingworthite

(Rh,Pt,Pd)AsS
Dana No: 02.12.03.08 Strunz No: 02.EB.25
Locality:

 

Notes:

 

 
   
 


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