Mineralogy Database

Djurleite Mineral Data

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General Djurleite Information

Help on Chemical  Formula: Chemical Formula: Cu31S16
Help on Composition: Composition: Molecular Weight = 2,482.98 gm
   Copper  79.34 %  Cu
   Sulfur  20.66 %  S
          100.00 % 
Help on Empirical Formula: Empirical Formula: Cu31S16
Help on Environment: Environment: Found with other secondary copper sulfides in enriched zones.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: In the USA, in many of the large porphyry copper deposits of the Western Cordillera including Butte, Silver Bow Co., Montana; Bisbee, Cochise Co. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For S. Djurle, who first synthesized the compound later found in nature.
Help on Name Pronunciation: Name Pronunciation: Djurleite + Pronunciation Say DJURLEITE
Help on Synonym: Synonym: ICSD 10100
  PDF 34-660

Djurleite Image

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Comments: Dark, metallic djurleite with transparent quartz and white calcite.
Location: Dzhezkazgan. Kazakhstan. Scale: 4.5 x 4.5 cm.
© Fabre Minerals

Djurleite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.7079:1:0.8615
Help on Cell Dimensions: Cell Dimensions: a = 26.9, b = 15.75, c = 13.57, Z = 8; beta = 90.13° V = 5,749.25 Den(Calc)= 5.74
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.871(1), 1.964(0.9), 2.387(0.9),

Physical Properties of Djurleite

Help on Cleavage: Cleavage: None
Help on Color: Color: Lead gray, Blue black, Black, Black gray.
Help on Density: Density: 5.63
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Metallic
Help on Streak: Streak: metallic

Optical Properties of Djurleite

Help on RL Anisotrophism: RL Anisotrophism: Weak.
Help on RL Color: RL Color: Gray.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Djurleite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   34.60   35.80 
 420 nm   34.20   35.20 
 440 nm   33.80   34.60 
 460 nm   33.30   34.00 
 480 nm   32.60   33.20 
 500 nm   31.80   32.30 
 520 nm   30.60   31.20 
 540 nm   29.60   30.20 
 560 nm   28.60   29.30 
 580 nm   27.80   28.60 
 600 nm   27.00   28.10 
 620 nm   26.40   27.60 
 640 nm   25.70   27.10 
 660 nm   25.00   26.70 
 680 nm   24.40   26.40 
 700 nm   23.60   26.10 
Calculated Relative Intensity Colors of Djurleite in Air
   0%   40%   80% 100% 120% 160% 200% 240% 280% 320% 330%

Calculated Properties of Djurleite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.34 gm/cc
note: Specific Gravity of Djurleite =5.74 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0015497172
Boson Index = 0.9984502828
Help on Photoelectric: Photoelectric: PEDjurleite = 36.99 barns/electron
U=PEDjurleite x rElectron Density= 197.51 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Djurleite is Not Radioactive

Djurleite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.04)where Am Bn Xp, with (m+n):p=2:1
  (02.04.07)Chalcocite Group ([Cu]2-x S] formulae) Chalcocite Cu2S P 21/c 2/m Djurleite Cu31S16 P 21/n 2/m Digenite Cu9S5 R 3m 3 2/m Roxbyite Cu1.78S C 2/m 2/m Anilite Cu7S4 P nma 2/m 2/m 2/m Geerite Cu8S5 R 3m, R 3m, or R 32 Trig Spionkopite Cu1.4S P 3m1 ? 3m
Help on  Strunz Class: Strunz Class: 02.BA.05b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1)
  02.BA -With Cu, Ag, Au
02.BA.05b Djurleite Cu31S16 P 21/n 2/m

Other Djurleite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Djurleite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - Franklin Minerals(Dunn)
8 - GeoScienceWorld
9 - Google Images
10 - Google Scholar
11 - Handbook of Mineralogy (MinSocAm)
12 - Handbook of Mineralogy (UofA)
13 - MinDAT
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - Scandinavian mineral gallery

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Dana No: Strunz No: 02.BA.05b





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