General Dzharkenite Information
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Chemical Formula: |
FeSe2 |
Composition: |
Molecular Weight = 213.77 gm |
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Iron 26.13 % Fe |
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Selenium 73.87 % Se |
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______ |
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100.00 % |
Empirical Formula: |
Fe2+Se2 |
Environment: |
In selenium ore associated with ferrosellite and goethite. Polymorphous with ferroselite. |
IMA Status: |
Approved IMA 1995 |
Locality: |
In the Suluchekinskoye Se-U deposit, Dzharkenskaya depression, SE Kazakhstan. Link to MinDat.org Location Data. |
Name Origin: |
Named after its locality. |
Synonym: |
IMA1993-054 |
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Dzharkenite Crystallography
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Cell Dimensions: |
a = 5.783, Z = 4; V = 193.40 Den(Calc)= 7.34 |
Crystal System: |
Isometric - DiploidalH-M Symbol (2/m 3) Space Group: P a3 |
X Ray Diffraction: |
By Intensity(I/Io): 2.588(1), 2.364(0.8), 1.546(0.6), |
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Physical Properties of Dzharkenite
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Cleavage: |
None |
Color: |
Black. |
Density: |
7.34 |
Diaphaniety: |
Opaque |
Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
Habit: |
Crystalline - Fine - Occurs as well-formed fine sized crystals. |
Hardness: |
5 - Apatite |
Luster: |
Metallic |
Streak: |
black |
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Optical Properties of Dzharkenite
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RL Anisotrophism: |
Absent. |
RL Bireflectance: |
Absent. |
RL Color: |
Pink-yellow. |
RL Pleochroism: |
Absent. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Dzharkenite in Air
| λ |
R |
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∑ R(λ) |
| 480 nm |
41.70 |
 |
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| 540 nm |
42.60 |
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| 580 nm |
45.10 |
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| 660 nm |
50.20 |
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Calculated Relative Intensity Colors of Dzharkenite in Air
Relative Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
| R |
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Calculated Properties of Dzharkenite
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Electron Density: |
relectron=6.46 gm/cc note: rDzharkenite =7.34 gm/cc. |
Fermion Index |
Fermion Index = 0.06168 Boson Index = 0.93832 |
Photoelectric: |
PEDzharkenite = 67.56 barns/electron U=PEDzharkenite x relectron= 436.09 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Dzharkenite is Not Radioactive |
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Dzharkenite Classification
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Dana Class: |
2.12.1.17 (2)Sulfides - Including Selenides and Tellurides |
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(2.12)where Am Bn Xp, with (m+n):p=1:2 |
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(2.12.1)Pyrite Group (Isometric: Pa3) |
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2.12.1.1 Pyrite FeS2 P a3 2/m 3 |
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2.12.1.2 Vaesite NiS2 P a3 2/m 3 |
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2.12.1.3 Cattierite CoS2 P a3 2/m 3 |
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2.12.1.4 Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3 |
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2.12.1.5 Trogtalite CoSe2 P a3 2/m 3 |
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2.12.1.6 Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3 |
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2.12.1.7 Fukuchilite Cu3FeS8 P a3 2/m 3 |
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2.12.1.8 Krutaite CuSe2 P a3 2/m 3 |
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2.12.1.9 Hauerite MnS2 P a3 2/m 3 |
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2.12.1.10 Laurite RuS2 P a3 2/m 3 |
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2.12.1.11 Aurostibite AuSb2 P a3 2/m 3 |
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2.12.1.12 Krutovite NiAs2 P a3 2/m 3 |
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2.12.1.13 Sperrylite PtAs2 P a3 2/m 3 |
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2.12.1.14 Geversite Pt(Sb,Bi)2 P a3 2/m 3 |
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2.12.1.15 Insizwaite Pt(Bi,Sb)2 P a3 2/m 3 |
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2.12.1.16 Erlichmanite OsS2 P a3 2/m 3 |
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2.12.1.17 Dzharkenite FeSe2 P a3 2/m 3 |
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2.12.1.18 Gaotaiite Ir3Te8 P a3 2/m 3 |
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2.12.1.19 Mayingite IrBiTe P a3 2/m 3 |
Strunz Class: |
II/D.17-65 II - Sulfides and sulphosalts |
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II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold |
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II/D.17 - Pyrite group and related compounds, Fukuchilite - Micherenite |
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II/D.17-10 Fukuchilite Cu3FeS8 P a3 2/m 3 |
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II/D.17-20 Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3 |
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II/D.17-30 Pyrite FeS2 P a3 2/m 3 |
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II/D.17-40 Cattierite CoS2 P a3 2/m 3 |
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II/D.17-50 Vaesite NiS2 P a3 2/m 3 |
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II/D.17-60 Hauerite MnS2 P a3 2/m 3 |
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II/D.17-65 Dzharkenite FeSe2 P a3 2/m 3 |
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II/D.17-70 Krutaite CuSe2 P a3 2/m 3 |
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II/D.17-80 Trogtalite CoSe2 P a3 2/m 3 |
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II/D.17-90 Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3 |
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II/D.17-100 Laurite RuS2 P a3 2/m 3 |
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II/D.17-110 Erlichmanite OsS2 P a3 2/m 3 |
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II/D.17-120 Sperrylite PtAs2 P a3 2/m 3 |
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II/D.17-130 Aurostibite AuSb2 P a3 2/m 3 |
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II/D.17-140 Geversite Pt(Sb,Bi)2 P a3 2/m 3 |
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II/D.17-150 Insizwaite Pt(Bi,Sb)2 P a3 2/m 3 |
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II/D.17-153 Changchengite! IrBiS P 213 2 3 |
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II/D.17-155 Mayingite IrBiTe P a3 2/m 3 |
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II/D.17-160 Maslovite PtBiTe P 213 2 3 |
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II/D.17-170 Testibiopalladite PdTe(Sb,Te) P 213 2 3 |
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II/D.17-175 Padmaite PdBiSe P 213 2 3 |
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II/D.17-180 Michenerite (Pd,Pt)BiTe P 213 2 3 |
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Other Dzharkenite Information
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References: |
NAME( MinRec, v 27, p 116) PHYS. PROP.(MinRec, v 27, p 116) OPTIC PROP.(MinRec, v 27, p 116) |
See Also: |
Links to other databases for Dzharkenite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 - EUROmin Project
4 -Google Images
5 -Google Scholar
6 -Handbook of Mineralogy (UofA)
7 -MinDAT
8 -MinMax(Deutsch)
9 -MinMax(English)
10 -Mineralienatlas (Deutsch)
11 -QUT Mineral Atlas
12 - WWW-MINCRYST
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Dzharkenite
FeSe2
Dana No: 2.12.1.17 Strunz No: II/D.17-65
Locality:
Notes:
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