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Carrollite Mineral Data
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General Carrollite Information
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 Chemical Formula: |
Cu(Co,Ni)2S4 |
| Composition: |
Molecular Weight = 309.55 gm |
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Cobalt 28.56 % Co |
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Copper 20.53 % Cu |
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Nickel 9.48 % Ni |
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Sulfur 41.43 % S |
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______ |
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100.00 % |
| Empirical Formula: |
CuCo1.5Ni0.5S4 |
| Environment: |
In hydrothermal vein deposits. |
| IMA Status: |
Valid Species (Pre-IMA) 1852 |
| Locality: |
In the USA, in the Patapsco mine, Finksburg, and the Mineral Hill mine, Sykesville, Carroll Co., Maryland. Link to MinDat.org Location Data. |
| Name Origin: |
For its occurrence in Carroll Co., Maryland, USA. |
| Name Pronunciation: |
Carrollite + Pronunciation  |
| Synonym: |
ICSD 31107 |
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PDF 42-1450 |
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Carrollite Image |
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Images:
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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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Images:
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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 |
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Carrollite Crystallography
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| Cell Dimensions: |
a = 9.477, Z = 8; V = 851.16 Den(Calc)= 4.83 |
| Crystal System: |
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m |
| X Ray Diffraction: |
By Intensity(I/Io): 2.86(1), 1.674(0.8), 1.825(0.6), |
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Physical Properties of Carrollite
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| Cleavage: |
{001} Indistinct |
| Color: |
Gray, Gray, Copper red, Light gray, Steel. |
| Density: |
4.5 - 4.8, Average = 4.65 |
| Diaphaneity: |
Opaque |
| Fracture: |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). |
| Hardness: |
4.5-5.5 - Near Apatite |
| Luster: |
Metallic |
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Optical Properties of Carrollite
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| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Carrollite in Air
| λ |
R |
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∑ R(λ) |
| 400 nm |
40.50 |
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| 420 nm |
40.60 |
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| 440 nm |
40.70 |
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| 460 nm |
40.70 |
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| 480 nm |
40.80 |
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| 500 nm |
40.90 |
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| 520 nm |
41.20 |
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| 540 nm |
41.80 |
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| 560 nm |
41.80 |
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| 580 nm |
41.90 |
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| 600 nm |
42.10 |
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| 620 nm |
42.70 |
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| 640 nm |
43.30 |
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| 660 nm |
43.90 |
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| 680 nm |
44.60 |
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| 700 nm |
45.00 |
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Calculated Relative Intensity Colors of Carrollite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
220% |
| R |
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Calculated Properties of Carrollite
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| Electron Density: |
Bulk Density (Electron Density)=4.60 gm/cc
note: Specific Gravity of Carrollite =4.83 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0041788352
Boson Index = 0.9958211648 |
| Photoelectric: |
PECarrollite = 24.99 barns/electron
U=PECarrollite x rElectron Density= 115.04 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Carrollite is Not Radioactive |
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Carrollite Classification
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| Dana Class: |
02.10.01.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.10)where Am Bn Xp, with (m+n):p=3:4 |
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(02.10.01)Linnaeite Group (Isometric: Fd3m) |
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02.10.01.01 Linnaeite CoCo2S4 F d3m 4/m 3 2/m |
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02.10.01.02 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m |
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02.10.01.03 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m |
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02.10.01.04 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m |
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02.10.01.05 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m |
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02.10.01.06 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m |
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02.10.01.07 Polydymite NiNi2S4 F d3m 4/m 3 2/m |
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02.10.01.08 Violarite FeNi2S4 F d3m 4/m 3 2/m |
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02.10.01.09 Trustedtite Ni3Se4 F d3m 4/m 3 2/m |
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02.10.01.10 Greigite FeFe2S4 F d3m 4/m 3 2/m |
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02.10.01.11 Daubreelite FeCr2S4 F d3m 4/m 3 2/m |
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02.10.01.12 Indite FeIn2S4 F d3m 4/m 3 2/m |
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02.10.01.13 Kalininite ZnCr2S4 F d3m 4/m 3 2/m |
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02.10.01.14 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m |
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02.10.01.15 Cuproiridsite CuIr2S4 F d3m 4/m 3 2/m |
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02.10.01.16 Cuprorhodsite CuRh2S4 F d3m 4/m 3 2/m |
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02.10.01.17 Malanite Cu(Pt,Ir)2S4 F d3m 4/m 3 2/m |
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02.10.01.18 Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 F d3m 4/m 3 2/m |
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02.10.01.19 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m |
| Strunz Class: |
02.DA.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.D - Metal Sulfides, M:S = 3:4 and 2:3 |
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02.DA -M:S = 3:4 |
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02.DA.05 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m |
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02.DA.05 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m |
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02.DA.05 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m |
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02.DA.05 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m |
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02.DA.05 Cuproiridsite CuIr2S4 F d3m 4/m 3 2/m |
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02.DA.05 Cuprorhodsite CuRh2S4 F d3m 4/m 3 2/m |
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02.DA.05 Dayingite* CuCoPtS4 F m3m 4/m 3 2/m |
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02.DA.05 Daubreelite FeCr2S4 F d3m 4/m 3 2/m |
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02.DA.05 Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 F d3m 4/m 3 2/m |
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02.DA.05 Greigite FeFe2S4 F d3m 4/m 3 2/m |
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02.DA.05 Indite FeIn2S4 F d3m 4/m 3 2/m |
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02.DA.05 Linnaeite CoCo2S4 F d3m 4/m 3 2/m |
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02.DA.05 Kalininite ZnCr2S4 F d3m 4/m 3 2/m |
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02.DA.05 Malanite Cu(Pt,Ir)2S4 F d3m 4/m 3 2/m |
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02.DA.05 Polydymite NiNi2S4 F d3m 4/m 3 2/m |
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02.DA.05 Violarite FeNi2S4 F d3m 4/m 3 2/m |
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02.DA.05 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m |
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02.DA.05 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m |
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02.DA.05 Xingzhongite (Pb,Cu,Fe)(Ir,Pt,Rh)2S4 F d3m 4/m 3 2/m |
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02.DA.05 Trustedtite Ni3Se4 F d3m 4/m 3 2/m |
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02.DA.05 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m |
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Other Carrollite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AmMin) |
| 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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Carrollite
Cu(Co,Ni)2S4
Dana No: 02.10.01.02 Strunz No: 02.DA.05
Locality:
Notes:
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