Mineralogy Database

Melonite Mineral Data

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General Melonite Information

Help on Chemical  Formula: Chemical Formula: NiTe2
Help on Composition: Composition: Molecular Weight = 313.89 gm
   Nickel     18.70 %  Ni
   Tellurium  81.30 %  Te
             100.00 % 
Help on Empirical Formula: Empirical Formula: NiTe2
Help on Environment: Environment: Found with other telllurium minerals in the late stages of hydrothermal veins formed at moderate to low temperatures. Also in high temperature magmatic sulfide deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1866
Help on Locality: Locality: Melones and Stanislaus mine, Carson hill, Calaveras County, California, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Melonite Say MELONITE
Help on Synonym: Synonym: ICSD 41386
  Imgreite - discredited
  PDF 04-Aug

Melonite Image

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Comments: Metallic foil of melonite.
Location: Cresson Mine, Cripple Creek, Teller County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Melonite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.37064
Help on Cell Dimensions: Cell Dimensions: a = 3.842, c = 5.266, Z = 1; V = 67.32 Den(Calc)= 7.74
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: P 3m1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.82(1), 1.549(0.6), 1.92(0.5),2.06(0.5), 2.64(0.3), 1.08(0.2), 1.23(0.2), 1.59(0.2),

Physical Properties of Melonite

Help on Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: White, Reddish white.
Help on Density: Density: 7.3
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Foliated - Two dimensional platy forms.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 1-1.5 - Talc or a little harder
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: dark gray

Optical Properties of Melonite

Help on RL Anisotrophism: RL Anisotrophism: Very weak, cream-white to slightly more pinkish.
Help on RL Color: RL Color: White to faint pink.
Help on RL Pleochroism: RL Pleochroism: Moderate to strong.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Melonite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   52.90   69.90 
 420 nm   53.60   64.20 
 440 nm   54.30   58.50 
 460 nm   55.10   56.00 
 480 nm   56.10   55.40 
 500 nm   57.30   55.70 
 520 nm   58.50   56.50 
 540 nm   59.80   57.70 
 560 nm   61.00   58.90 
 580 nm   62.00   60.10 
 600 nm   63.00   61.20 
 620 nm   63.80   62.30 
 640 nm   64.60   63.20 
 660 nm   65.40   64.00 
 680 nm   66.00   65.00 
 700 nm   66.60   66.00 
Calculated Relative Intensity Colors of Melonite in Air
   0%   20%   40%   60%   80% 100% 120% 140% 160%

Calculated Properties of Melonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.51 gm/cc
note: Specific Gravity of Melonite =7.74 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEMelonite = 305.09 barns/electron
U=PEMelonite x rElectron Density=1,986.05 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Melonite is Not Radioactive

Melonite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.12)where Am Bn Xp, with (m+n):p=1:2
  (02.12.14)Melonite Group (Trigonal: P-3m1) AX2 type Melonite NiTe2 P 3m1 3 2/m Kitkaite NiTeSe P 3m1 3 2/m Moncheite (Pt,Pd)(Te,Bi)2 P 3m1 3 2/m Merenskyite (Pd,Pt)(Te,Bi)2 P 3m1 3m Berndtite SnS2 P 3m1 3 2/m Shuangfengite IrTe2 P 3m1 3 2/m Sudovikovite! PtSe2 P 3m1 3 2/m
Help on  Strunz Class: Strunz Class: 02.EA.20 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.E - Metal Sulfides, M:S � 1:2
  02.EA -M:S = 1:2
02.EA.20 Berndtite SnS2 P 3m1 3 2/m
02.EA.20 Merenskyite (Pd,Pt)(Te,Bi)2 P 3m1 3m
02.EA.20 Melonite NiTe2 P 3m1 3 2/m
02.EA.20 Kitkaite NiTeSe P 3m1 3 2/m
02.EA.20 Moncheite (Pt,Pd)(Te,Bi)2 P 3m1 3 2/m
02.EA.20 Sudovikovite! PtSe2 P 3m1 3 2/m
02.EA.20 Shuangfengite IrTe2 P 3m1 3 2/m

Other Melonite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Melonite :
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

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Dana No: Strunz No: 02.EA.20





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