General Nickeline Information
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Chemical Formula: |
NiAs |
Composition: |
Molecular Weight = 133.61 gm |
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Nickel 43.93 % Ni |
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Arsenic 56.07 % As |
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______ |
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100.00 % |
Empirical Formula: |
NiAs |
Environment: |
In ore veins with silver, copper, and nickel arsenides and sulfides. |
IMA Status: |
Valid Species (Pre-IMA) 1832 |
Locality: |
Cobalt, Ontario. Link to MinDat.org Location Data. |
Name Origin: |
Named after its composition. |
Synonym: |
Arsenical nickel |
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ICSD 31062 |
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Niccolite |
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PDF 47-1737 |
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Nickeline Image |
Images:
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Nickeline Crystallography
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Axial Ratios: |
a:c = 1:1.39068 |
Cell Dimensions: |
a = 3.609, c = 5.019, Z = 2; V = 56.61 Den(Calc)= 7.84 |
Crystal System: |
Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc |
X Ray Diffraction: |
By Intensity(I/Io): 2.66(1), 1.961(0.9), 1.811(0.8), |
Forms:
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Crystal Structure:
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Wyckoff R W G , Crystal Structures , 1 (1963) p.85-237, Second edition. Interscience Publishers, New York, New York, Note: ideal nickel arsenide structure
View Additional jPOWD Structure files for Nickeline
[1]
[2]
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Physical Properties of Nickeline
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Cleavage: |
[1010] Imperfect, [0001] Imperfect |
Color: |
Lead gray, Grayish, Copper, Black. |
Density: |
7.78 - 7.8, Average = 7.79 |
Diaphaniety: |
Opaque |
Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
Habit: |
Columnar - Forms columns |
Habit: |
Massive - Uniformly indistinguishable crystals forming large masses. |
Habit: |
Reniform - "Kidney like" in shape (e.g.. hematite). |
Hardness: |
5.5 - Knife Blade |
Luminescence: |
None. |
Luster: |
Metallic |
Magnetism: |
Nonmagnetic |
Streak: |
brownish black |
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Optical Properties of Nickeline
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RL Anisotrophism: |
Very strong, light greenish yellow to slate-gray in air. |
RL Color: |
White with strong yellowish pink hue. |
RL Pleochroism: |
High, whitish, yellow-pink, to light brownish pink. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Nickeline in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
41.40 |
48.20 |

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| 420 nm |
40.60 |
47.10 |

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| 440 nm |
39.40 |
46.00 |

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| 460 nm |
39.00 |
45.50 |

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| 480 nm |
39.50 |
46.20 |

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| 500 nm |
41.30 |
47.70 |

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| 520 nm |
43.80 |
49.50 |

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| 540 nm |
47.00 |
51.60 |

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| 560 nm |
50.50 |
53.80 |

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| 580 nm |
53.50 |
56.00 |

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| 600 nm |
56.00 |
57.80 |

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| 620 nm |
58.20 |
59.70 |

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| 640 nm |
60.00 |
60.90 |

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| 660 nm |
61.40 |
62.00 |

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| 680 nm |
62.30 |
62.80 |

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| 700 nm |
62.80 |
63.20 |

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Calculated Relative Intensity Colors of Nickeline in Air
Relative Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
220% |
| R1 |
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| R2 |
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Calculated Properties of Nickeline
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Electron Density: |
relectron=7.16 gm/cc note: rNickeline =7.84 gm/cc. |
Fermion Index |
Fermion Index = 0.00496 Boson Index = 0.99504 |
Photoelectric: |
PENickeline = 58.21 barns/electron U=PENickeline x relectron= 416.69 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Nickeline is Not Radioactive |
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Nickeline Classification
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Dana Class: |
2.8.11.1 (2)Sulfides - Including Selenides and Tellurides |
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(2.8)where Am Bn Xp, with (m+n):p=1:1 |
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(2.8.11)Nickeline Group (Hexagonal: P63/mmc) |
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2.8.11.1 Nickeline NiAs P 63/mmc 6/m 2/m 2/m |
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2.8.11.2 Breithauptite NiSb P 63/mmc 6/m 2/m 2/m |
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2.8.11.3 Sederholmite NiSe P 63/mmc 6/m 2/m 2/m |
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2.8.11.4 Hexatestibiopanickelite (Ni,Pd)(Te,Sb) P 63/mmc 6/m 2/m 2/m |
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2.8.11.5 Sudburyite (Pd,Ni)Sb P 63/mmc 6/m 2/m 2/m |
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2.8.11.6 Kotulskite Pd(Te,Bi) P 63/mmc 6/m 2/m 2/m |
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2.8.11.7 Sobolevskite PdBi P 63/mmc 6/m 2/m 2/m |
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2.8.11.8 Stumpflite Pt(Sb,Bi) P 63/mmc 6/m 2/m 2/m |
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2.8.11.9 Langisite (Co,Ni)As P 63/mmc 6/m 2/m 2/m |
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2.8.11.10 Freboldite CoSe P 63/mmc 6/m 2/m 2/m |
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2.8.11.11 Sorosite! Cu(Sn,Sb) P 63/mmc 6/m 2/m 2/m |
Strunz Class: |
II/C.20-20 II - Sulfides and sulphosalts |
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II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1 |
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II/C.20 - Nickeline group and related compounds, Polarite - Cherepanovite series |
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II/C.20-05 Sorosite! Cu(Sn,Sb) P 63/mmc 6/m 2/m 2/m |
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II/C.20-10 Langisite (Co,Ni)As P 63/mmc 6/m 2/m 2/m |
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II/C.20-20 Nickeline NiAs P 63/mmc 6/m 2/m 2/m |
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II/C.20-30 Breithauptite NiSb P 63/mmc 6/m 2/m 2/m |
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II/C.20-40 Freboldite CoSe P 63/mmc 6/m 2/m 2/m |
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II/C.20-50 Sederholmite NiSe P 63/mmc 6/m 2/m 2/m |
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II/C.20-70 Hexatestibiopanickelite (Ni,Pd)(Te,Sb) P 63/mmc 6/m 2/m 2/m |
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II/C.20-75 Yuanjiangite AuSn P 63/mmc 6/m 2/m 2/m |
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II/C.20-80 Kotulskite Pd(Te,Bi) P 63/mmc 6/m 2/m 2/m |
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II/C.20-90 Sudburyite (Pd,Ni)Sb P 63/mmc 6/m 2/m 2/m |
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II/C.20-95 Stumpflite Pt(Sb,Bi) P 63/mmc 6/m 2/m 2/m |
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II/C.20-100 Polarite Pd(Bi,Pb) Ccm21 mm2 |
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II/C.20-110 Sobolevskite PdBi P 63/mmc 6/m 2/m 2/m |
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II/C.20-120 Ruthenarsenite (Ru,Ni)As P nma 2/m 2/m 2/m |
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II/C.20-130 Cherepanovite RhAs P nma 2/m 2/m 2/m |
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Other Nickeline Information
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References: |
NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
See Also: |
Links to other databases for Nickeline :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 -Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Applied Mineralogy
6 -Athena
7 - Crocoite.com Mineral Locations
8 - EUROmin Project
9 - Franklin Minerals(Dunn)
10 -Google Images
11 -Google Scholar
12 -Handbook of Mineralogy (UofA)
13 -MinDAT
14 -MinMax(Deutsch)
15 -MinMax(English)
16 -Mineralienatlas (Deutsch)
17 - Minerals of Wisconsin
18 -QUT Mineral Atlas
19 - WWW-MINCRYST
20 -École des Mines de Paris
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Print or Cut-and-Paste your Nickeline Specimen Label here :
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Nickeline
NiAs
Dana No: 2.8.11.1 Strunz No: II/C.20-20
Locality:
Notes:
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