Cobaltite Mineral Data (original) (raw)

General Cobaltite Information

Help on Chemical Formula: Chemical Formula:

CoAsS

Help on Composition: Composition:

Molecular Weight = 165.92 gm

Cobalt 35.52 % Co

Arsenic 45.16 % As

Sulfur 19.33 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

CoAsS

Help on Environment: Environment:

High temperature hydrotherma deposits and contact metamorphic rocks.

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1832

Help on Locality: Locality:

Mines in the Cobalt district, Ontario, Canada. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

From the German, Kobold, "underground spirit" or "goblin," in allusion to the refusal of cobaltiferous ores to smelt properly, hence "bewitched."

Help on Name Pronunciation: Name Pronunciation:

Cobaltite + Pronunciation Say COBALTITE

Help on Synonym: Synonym:

ICSD 31189

PDF 42-1345

Cobaltite Image

Click Here for Larger Cobaltite Image in a New Browser Window Images:

Click Here for Larger Cobaltite Image Cobaltite Comments: Cobaltite embedded in greenish gray dolomite. Location: Espanola, Ontario, Canada.Scale: 1.3 cm across. © John Veevaert

Cobaltite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.9978:1:1

Help on Cell Dimensions: Cell Dimensions:

a = 5.57, b = 5.582, c = 5.582, Z = 4; V = 173.55 Den(Calc)= 6.35

Help on Crystal System: Crystal System:

Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P ca21

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 1.68(1), 2.59(1), 2.77(0.8),

Help on Forms: Forms:

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| | Forms:( 1 0 2) ( 1 0 0) ( 0 1 0) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | --------------------------------------------------------------------------------------------------------------------------------------------------- |

Click Here for Large Cobaltite Structure Window Crystal Structure:

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| | Giese R F , Kerr P F , American Mineralogist , 50 (1965) p.1002-1014, The crystal structures of ordered and disordered cobaltite, ordered, annealed after heating in a vacuum at 450 C View Additional jPOWD Structure files for Cobaltite [1] [2] [3] | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Cobaltite

Help on Cleavage: Cleavage:

{100} Good, {010} Good, {001} Good

Help on Color: Color:

Reddish silver white, Violet steel gray, Black.

Help on Density: Density:

6.33

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Help on Habit: Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Help on Habit: Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Help on Habit: Habit:

Striated - Parallel lines on crystal surface or cleavage face.

Help on Hardness: Hardness:

5.5 - Knife Blade

Help on Luminescence: Luminescence:

Non-fluorescent.

Help on Luster: Luster:

Metallic

Help on Magnetism: Magnetism:

Magnetic after heating

Help on Streak: Streak:

grayish black

Optical Properties of Cobaltite

Help on RL Pleochroism: RL Pleochroism:

Very weak.

Help on Reflectivity Reflectivity

Standardized Intensity (100%) Reflection Spectra of Cobaltite in Air

λ R ∑ R(λ)
400 nm 48.20
420 nm 48.60
440 nm 49.00
460 nm 48.60
480 nm 48.30
500 nm 48.70
520 nm 49.40
540 nm 50.30
560 nm 51.20
580 nm 52.30
600 nm 53.20
620 nm 54.10
640 nm 54.80
660 nm 55.20
680 nm 55.40
700 nm 55.30

Calculated Relative Intensity Colors of Cobaltite in Air

RelativeIntensity 0% 20% 40% 60% 80% 100% 120% 140% 160% 180% 190%
R

Calculated Properties of Cobaltite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=5.82 gm/cc
note: Specific Gravity of Cobaltite =6.35 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.0014494566
Boson Index = 0.9985505434

Help on Photoelectric: Photoelectric:

PECobaltite = 45.56 barns/electron
U=PECobaltite x rElectron Density= 265.02 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cobaltite is Not Radioactive

Cobaltite Classification

Help on Dana Class: Dana Class:

02.12.03.01 (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 Cobaltite Information

Help on References: References:

NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

Help on See Also: See Also:

Links to other databases for Cobaltite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Amethyst Galleries' Mineral Gallery
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - Philatelic Mineralogy
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - Scandinavian mineral gallery
19 - WWW-MINCRYST

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Ask about Cobaltite here :
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Print or Cut-and-Paste your Cobaltite Specimen Label here :

Cobaltite

CoAsS
Dana No: 02.12.03.01 Strunz No: 02.EB.25
Locality:

Notes: