Polydymite Mineral Data (original) (raw)
General Polydymite Information
Chemical Formula:
NiNi2S4
Composition:
Molecular Weight = 304.33 gm
Nickel 57.85 % Ni
Sulfur 42.15 % S
______
100.00 %
Empirical Formula:
NiNi2S4
Environment:
Found in hydrothermal veins. Forms a series with linnaeite.
IMA Status:
Valid Species (Pre-IMA) 1876
Locality:
Gr�nau mine, Sayn-Altenkirchen, Nordrhein-Westfalen, Germany. Link to MinDat.org Location Data.
Name Origin:
From the Greek for "many" and "twin", as the mineral is observed in twinned forms.
Name Pronunciation:
Polydymite + Pronunciation 
Synonym:
ICSD 36271
Nickellinnaeite
PDF 47-1739
Polydymite Image
Images:
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Polydymite Comments: Octahedral crystals of polydymite on matrix. Location: Grüneau Mine (Grüne Au Mine; Grünau Mine), Schutzbach, Betzdorf, Siegen District (W), Rhineland-Palatinate, Germany.Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag |
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Polydymite Crystallography
Cell Dimensions:
a = 9.405, Z = 8; V = 831.91 Den(Calc)= 4.86
Crystal System:
Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m
X Ray Diffraction:
By Intensity(I/Io): 1.674(1), 2.36(0.9), 2.85(0.9),
Forms:
Mouse
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| | Forms:( 0 0 1) ( 1 1 1) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | -------------------------------------------------------------------------------------------------------------------------------------- |
Crystal Structure:
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| | Lundqvist D , Arkiv for Mineralogi och Geologi , 24 (1947) p.1-12, X-ray studies on the binary system Ni-S, Note: spinel structure, Locality: synthetic | | ---------------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Polydymite
Cleavage:
{001} Indistinct
Color:
Violet gray, Copper red, Light gray, Steel gray.
Density:
4.5 - 4.8, Average = 4.65
Diaphaneity:
Opaque
Fracture:
Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
Habit:
Massive - Granular - Common texture observed in granite and other igneous rock.
Habit:
Octahedral Crystals - Occurs as octahedral shaped crystals.
Habit:
Twinning Common - Crystals are usually twinned.
Hardness:
4.5-5.5 - Near Apatite
Luster:
Metallic
Streak:
black gray
Optical Properties of Polydymite
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Polydymite in Air
| λ | R |  |
∑ R(λ) |
|---|---|---|---|
| 400 nm | 41.40 |  |
|
| 420 nm | 42.00 |  |
|
| 440 nm | 42.60 |  |
|
| 460 nm | 43.30 |  |
|
| 480 nm | 43.80 |  |
|
| 500 nm | 44.40 |  |
|
| 520 nm | 44.90 |  |
|
| 540 nm | 45.40 |  |
|
| 560 nm | 46.20 |  |
|
| 580 nm | 47.10 |  |
|
| 600 nm | 48.10 |  |
|
| 620 nm | 49.20 |  |
|
| 640 nm | 50.50 |  |
|
| 660 nm | 51.70 |  |
|
| 680 nm | 53.10 |  |
|
| 700 nm | 54.50 |  |
Calculated Relative Intensity Colors of Polydymite in Air
| RelativeIntensity | 0% | 30% | 60% | 90% | 100% | 120% | 150% | 180% | 210% |
|---|---|---|---|---|---|---|---|---|---|
| R |
Calculated Properties of Polydymite
Electron Density:
Bulk Density (Electron Density)=4.73 gm/cc
note: Specific Gravity of Polydymite =4.86 gm/cc.
Fermion Index:
Fermion Index = 0.0096984596
Boson Index = 0.9903015404
Photoelectric:
PEPolydymite = 25.34 barns/electron
U=PEPolydymite x rElectron Density= 119.77 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Polydymite is Not Radioactive
Polydymite Classification
Dana Class:
02.10.01.07 (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
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 Polydymite Information
References:
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
See Also:
Links to other databases for Polydymite :
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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Print or Cut-and-Paste your Polydymite Specimen Label here :
Polydymite
NiNi2S4
Dana No: 02.10.01.07 Strunz No: 02.DA.05
Locality:
Notes: