Mineralogy Database

Carrollite Mineral Data

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General Carrollite Information

Help on Chemical  Formula: Chemical Formula: Cu(Co,Ni)2S4
Help on Composition: Composition: Molecular Weight = 309.55 gm
   Cobalt  28.56 %  Co
   Copper  20.53 %  Cu
   Nickel   9.48 %  Ni
   Sulfur  41.43 %  S
          ______ 
          100.00 % 
Help on Empirical Formula: Empirical Formula: CuCo1.5Ni0.5S4
Help on Environment: Environment: In hydrothermal vein deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1852
Help on Locality: Locality: In the USA, in the Patapsco mine, Finksburg, and the Mineral Hill mine, Sykesville, Carroll Co., Maryland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For its occurrence in Carroll Co., Maryland, USA.
Help on Name Pronunciation: Name Pronunciation: Carrollite + Pronunciation Say CARROLLITE
Help on Synonym: Synonym: ICSD 31107
  PDF 42-1450
 

Carrollite Image

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  Carrollite

Comments: Carrollite crystal with minor attached matrix.
Location: Komoto-Frond in the Democratic Republic of the Congo. Scale: 1.2 cm.
© John Veevaert

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  Carrollite

Comments: Polished Section (PPL) image of corroded remnants of early, Ni-carrollite (grey-carr) in the core of a large pyrite (py) atoll structure wtth brown bornite and golden chalcopyrite.
Location: Giant Kidd Creek Volcanogenic Massive Sulfide deposit, Western Abitibi Subprovince, Timmins, Ontario, Canada. Scale: F.V.= 2 mm.
© National Resouces of Canada

Carrollite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 9.477, Z = 8; V = 851.16 Den(Calc)= 4.83
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.86(1), 1.674(0.8), 1.825(0.6),
 

Physical Properties of Carrollite

Help on Cleavage: Cleavage: {001} Indistinct
Help on Color: Color: Gray, Gray, Copper red, Light gray, Steel.
Help on Density: Density: 4.5 - 4.8, Average = 4.65
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Hardness: Hardness: 4.5-5.5 - Near Apatite
Help on Luster: Luster: Metallic
 

Optical Properties of Carrollite

Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Carrollite in Air
λ R  ∑ R(λ) 
 400 nm   40.50   
 420 nm   40.60 
 440 nm   40.70 
 460 nm   40.70 
 480 nm   40.80 
 500 nm   40.90 
 520 nm   41.20 
 540 nm   41.80 
 560 nm   41.80 
 580 nm   41.90 
 600 nm   42.10 
 620 nm   42.70 
 640 nm   43.30 
 660 nm   43.90 
 680 nm   44.60 
 700 nm   45.00 
Calculated Relative Intensity Colors of Carrollite in Air
Relative
Intensity
   0%   30%   60%   90% 100% 120% 150% 180% 210% 220%
R                    
 

Calculated Properties of Carrollite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.60 gm/cc
note: Specific Gravity of Carrollite =4.83 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0041788352
Boson Index = 0.9958211648
Help on Photoelectric: Photoelectric: PECarrollite = 24.99 barns/electron
U=PECarrollite x rElectron Density= 115.04 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Carrollite is Not Radioactive
 

Carrollite Classification

Help on  Dana Class: Dana Class: 02.10.01.02 (02)Sulfides - Including Selenides and Tellurides
  (02.10)where Am Bn Xp, with (m+n):p=3:4
  (02.10.01)Linnaeite Group (Isometric: Fd3m)
 
02.10.01.01 Linnaeite CoCo2S4 F d3m 4/m 3 2/m
 
02.10.01.02 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m
 
02.10.01.03 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m
 
02.10.01.04 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m
 
02.10.01.05 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m
 
02.10.01.06 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m
 
02.10.01.07 Polydymite NiNi2S4 F d3m 4/m 3 2/m
 
02.10.01.08 Violarite FeNi2S4 F d3m 4/m 3 2/m
 
02.10.01.09 Trustedtite Ni3Se4 F d3m 4/m 3 2/m
 
02.10.01.10 Greigite FeFe2S4 F d3m 4/m 3 2/m
 
02.10.01.11 Daubreelite FeCr2S4 F d3m 4/m 3 2/m
 
02.10.01.12 Indite FeIn2S4 F d3m 4/m 3 2/m
 
02.10.01.13 Kalininite ZnCr2S4 F d3m 4/m 3 2/m
 
02.10.01.14 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m
 
02.10.01.15 Cuproiridsite CuIr2S4 F d3m 4/m 3 2/m
 
02.10.01.16 Cuprorhodsite CuRh2S4 F d3m 4/m 3 2/m
 
02.10.01.17 Malanite Cu(Pt,Ir)2S4 F d3m 4/m 3 2/m
 
02.10.01.18 Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 F d3m 4/m 3 2/m
 
02.10.01.19 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 02.DA.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.D - Metal Sulfides, M:S = 3:4 and 2:3
  02.DA -M:S = 3:4
 
02.DA.05 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m
 
02.DA.05 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m
 
02.DA.05 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m
 
02.DA.05 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m
 
02.DA.05 Cuproiridsite CuIr2S4 F d3m 4/m 3 2/m
 
02.DA.05 Cuprorhodsite CuRh2S4 F d3m 4/m 3 2/m
 
02.DA.05 Dayingite* CuCoPtS4 F m3m 4/m 3 2/m
 
02.DA.05 Daubreelite FeCr2S4 F d3m 4/m 3 2/m
 
02.DA.05 Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 F d3m 4/m 3 2/m
 
02.DA.05 Greigite FeFe2S4 F d3m 4/m 3 2/m
 
02.DA.05 Indite FeIn2S4 F d3m 4/m 3 2/m
 
02.DA.05 Linnaeite CoCo2S4 F d3m 4/m 3 2/m
 
02.DA.05 Kalininite ZnCr2S4 F d3m 4/m 3 2/m
 
02.DA.05 Malanite Cu(Pt,Ir)2S4 F d3m 4/m 3 2/m
 
02.DA.05 Polydymite NiNi2S4 F d3m 4/m 3 2/m
 
02.DA.05 Violarite FeNi2S4 F d3m 4/m 3 2/m
 
02.DA.05 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m
 
02.DA.05 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m
 
02.DA.05 Xingzhongite (Pb,Cu,Fe)(Ir,Pt,Rh)2S4 F d3m 4/m 3 2/m
 
02.DA.05 Trustedtite Ni3Se4 F d3m 4/m 3 2/m
 
02.DA.05 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m
 

Other Carrollite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AmMin)
Help on See Also: See Also: Links to other databases for Carrollite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Franklin Minerals(Dunn)
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - HyperPhysics
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Scandinavian mineral gallery
16 - WWW-MINCRYST

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Print or Cut-and-Paste your Carrollite Specimen Label here :

Carrollite

Cu(Co,Ni)2S4
Dana No: 02.10.01.02 Strunz No: 02.DA.05
Locality:

 

Notes:

 

 
   
 


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