Melonite Mineral Data (original) (raw)

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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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 ScalenohedralH-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),

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Help on Above

| | Peacock M A , Thompson R M , American Mineralogist , 31 (1946) p.204-204, On melonite from Quebec and the crystal structure of NiTe2 View Additional jPOWD Structure files for Melonite [1] | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

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 R 2 ∑ 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

RelativeIntensity 0% 20% 40% 60% 80% 100% 120% 140% 160%
R1
R2

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:

02.12.14.01 (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

02.12.14.01 Melonite NiTe2 P 3m1 3 2/m

02.12.14.02 Kitkaite NiTeSe P 3m1 3 2/m

02.12.14.03 Moncheite (Pt,Pd)(Te,Bi)2 P 3m1 3 2/m

02.12.14.04 Merenskyite (Pd,Pt)(Te,Bi)2 P 3m1 3m

02.12.14.05 Berndtite SnS2 P 3m1 3 2/m

02.12.14.06 Shuangfengite IrTe2 P 3m1 3 2/m

02.12.14.07 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
15 - WWW-MINCRYST

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

Melonite

NiTe2
Dana No: 02.12.14.01 Strunz No: 02.EA.20
Locality:

Notes: