Violarite Mineral Data

Violarite Mineral Data +

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General Violarite Information

Chemical Formula:

Fe++Ni+++2S4

Composition:

Molecular Weight = 301.49 gm

Iron 18.52 % Fe

Nickel 38.93 % Ni

Sulfur 42.54 % S

______

100.00 %

Empirical Formula:

Fe²⁺Ni₂S₄

Environment:

Of hydrothermal origin with other sufides.

IMA Status:

Valid Species (Pre-IMA) 1924

Locality:

Vermilion mine, Denison township, Sudbury district, Ontario, Canada. Link to MinDat.org Location Data.

Name Origin:

From the Latin for "purple", its color in a polished section.

Synonym:

ICSD 42590

PDF 42-1449

Violarite Image

Images:

Violarite

Comments: Bronze massive violarite, tarnished, with gray colored rock.
Location: Marbridge Mines ltd., Abitibi District, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Violarite Crystallography

Cell Dimensions:

a = 9.445, Z = 8; V = 842.57 Den(Calc)= 4.75

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.85(1), 1.674(0.8), 1.82(0.6),

Forms:

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Forms: [ 1 1 0] [ 1 1 1]

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Crystal Structure:

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Vaughan D J , Craig J R , American Mineralogist , 70 (1985) p.1036-1043, The crystal chemistry of iron-nickel thiospinels, Note: structure from ICSD

Physical Properties of Violarite

Cleavage:

[001] Perfect, [001] Perfect, [001] Perfect

Color:

Violet gray, Copper red, Light gray, Steel gray.

Density:

4.5 - 4.8, Average = 4.65

Diaphaniety:

Opaque

Fracture:

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

Habit:

Nodular - Tuberose forms having irregular protuberances over the surface.

Hardness:

4.5-5.5 - Near Apatite

Luminescence:

Non-fluorescent.

Luster:

Metallic

Magnetism:

Nonmagnetic

Optical Properties of Violarite

RL Color:

Violet, distinct.

RL Pleochroism:

None.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Violarite in Air**
λ	R	∑ R(λ)
400 nm	39.00
420 nm	39.60
440 nm	40.20
460 nm	40.60
480 nm	41.00
500 nm	41.40
520 nm	41.90
540 nm	42.50
560 nm	43.10
580 nm	43.80
600 nm	44.30
620 nm	44.80
640 nm	45.40
660 nm	45.80
680 nm	46.20
700 nm	46.60

**Calculated Relative Intensity Colors of Violarite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	220%
R

Calculated Properties of Violarite

Electron Density:

r_electron=4.60 gm/cc
note: r_Violarite=4.75 gm/cc.

Fermion Index

Fermion Index = 0.01151
Boson Index = 0.98849

Photoelectric:

PE_Violarite= 23.44 barns/electron
U=PE_Violarite x r_electron= 107.83 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Violarite is Not Radioactive

Violarite Classification

Dana Class:

2.10.1.8 (2)Sulfides - Including Selenides and Tellurides

(2.10)where Am Bn Xp, with (m+n):p=3:4

(2.10.1)Linnaeite Group (Isometric: Fd3m)

2.10.1.1 Linnaeite CoCo2S4 F d3m 4/m 3 2/m

2.10.1.2 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m

2.10.1.3 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m

2.10.1.4 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m

2.10.1.5 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m

2.10.1.6 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m

2.10.1.7 Polydymite NiNi2S4 F d3m 4/m 3 2/m

2.10.1.8 Violarite FeNi2S4 F d3m 4/m 3 2/m

2.10.1.9 Trustedtite Ni3Se4 F d3m 4/m 3 2/m

2.10.1.10 Greigite FeFe2S4 F d3m 4/m 3 2/m

2.10.1.11 Daubreelite FeCr2S4 F d3m 4/m 3 2/m

2.10.1.12 Indite FeIn2S4 F d3m 4/m 3 2/m

2.10.1.13 Kalininite ZnCr2S4 F d3m 4/m 3 2/m

2.10.1.14 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m

2.10.1.15 Cuproiridsite CuIr2S4 F d3m 4/m 3 2/m

2.10.1.16 Cuprorhodsite CuRh2S4 F d3m 4/m 3 2/m

2.10.1.17 Malanite Cu(Pt,Ir)2S4 F d3m 4/m 3 2/m

2.10.1.18 Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 F d3m 4/m 3 2/m

2.10.1.19 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m

Strunz Class:

II/D.01-70 II - Sulfides and sulphosalts

II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold

II/D.01 - Linneite group and related compounds

II/D.01-10 Greigite FeFe2S4 F d3m 4/m 3 2/m

II/D.01-20 Linnaeite CoCo2S4 F d3m 4/m 3 2/m

II/D.01-30 Polydymite NiNi2S4 F d3m 4/m 3 2/m

II/D.01-40 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m

II/D.01-50 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m

II/D.01-60 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m

II/D.01-70 Violarite FeNi2S4 F d3m 4/m 3 2/m

II/D.01-80 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m

II/D.01-90 Indite FeIn2S4 F d3m 4/m 3 2/m

II/D.01-95 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m

II/D.01-100 Daubreelite FeCr2S4 F d3m 4/m 3 2/m

II/D.01-110 Kalininite ZnCr2S4 F d3m 4/m 3 2/m

II/D.01-120 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m

II/D.01-130 Trustedtite Ni3Se4 F d3m 4/m 3 2/m

II/D.01-140 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m

Other Violarite Information

References:

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

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

Violarite

Fe++Ni+++2S4
Dana No: 2.10.1.8 Strunz No: II/D.01-70
Locality:

Notes: