Majakite Mineral Data

Majakite Mineral Data +

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General Majakite Information

Chemical Formula:

PdNiAs

Composition:

Molecular Weight = 240.03 gm

Nickel 24.45 % Ni

Arsenic 31.21 % As

Palladium 44.34 % Pd

______

100.00 %

Empirical Formula:

PdNiAs

Environment:

Intergrown with chalcopyrite and platinum group metals.

IMA Status:

Approved IMA 1976

Locality:

Najak mine, Talnakh, Norilsk, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

Mayakite

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Majakite Crystallography

Axial Ratios:

a:c = 1:1.18694

Cell Dimensions:

a = 6.066, c = 7.2, Z = 6; V = 229.44 Den(Calc)= 10.42

Crystal System:

HexagonalSpace Group: Unk

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 1.988(1), 2.65(1), 2.19(0.7),

Physical Properties of Majakite

Color:

Gray white.

Density:

9.33

Diaphaniety:

Opaque

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

6 - Orthoclase

Luster:

Metallic

Optical Properties of Majakite

RL Anisotrophism:

Weak.

RL Color:

Grayish white.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Majakite in Air**
λ	R	∑ R(λ)
440 nm	47.40
460 nm	49.00
480 nm	50.50
500 nm	51.20
520 nm	52.30
540 nm	52.80
560 nm	54.40
580 nm	55.20
600 nm	55.80
620 nm	56.10
640 nm	56.70
660 nm	58.00
680 nm	57.90
700 nm	58.50

**Calculated Relative Intensity Colors of Majakite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%	180%
R

Calculated Properties of Majakite

Electron Density:

r_electron=9.29 gm/cc
note: r_Majakite=10.4 gm/cc.

Fermion Index

Fermion Index = 0.10176
Boson Index = 0.89824

Photoelectric:

PE_Majakite= 137.23 barns/electron
U=PE_Majakite x r_electron=1,274.90 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Majakite is Not Radioactive

Majakite Classification

Dana Class:

2.4.16.1 (2)Sulfides - Including Selenides and Tellurides

(2.4)where Am Bn Xp, with (m+n):p=2:1

(2.4.16)Dana Group

2.4.16.1 Majakite PdNiAs Unk Hex

2.4.16.2 Menshikovite! Pd3Ni2As3 P 6₃/m,P 6₃, or P 6₃22 Hex

Strunz Class:

II/A.05-110 II - Sulfides and sulphosalts

II/A - Alloys and alloylike compounds, with metals of the Platinum series, (Palladium)

II/A.05 - Atheneite - Genkinite series

II/A.05-10 Atheneite (Pd,Hg)3As P 6/mmm 6/m 2/m 2/m

II/A.05-20 Vincentite (Pd,Pt)3(As,Sb,Te) Unk Mono

II/A.05-30 Stillwaterite Pd8As3 P 3 3

II/A.05-40 Arsenopalladinite Pd8(As,Sb)3 P1 1

II/A.05-50 Isomertieite Pd11Sb2As2 F d3m 4/m 3 2/m

II/A.05-60 Mertieite-I Pd11(Sb,As)4 Unk Hex

II/A.05-70 Mertieite-II Pd8(Sb,As)3 R 3c 3m

II/A.05-80 Stibiopalladinite Pd5Sb2 P 6₃mc 6mm

II/A.05-90 Palladoarsenide Pd2As P 2/m 2/m

II/A.05-100 Palladobismutharsenide Pd2(As,Bi) Pmcn,P 2₁cn Ortho

II/A.05-102 Palladodymite! (Pd,Rh)2As P nma 2/m 2/m 2/m

II/A.05-105 Rhodarsenide! (Rh,Pd)2As P nma or Pn2 Ortho

II/A.05-110 Majakite PdNiAs Unk Hex

II/A.05-112 Menshikovite! Pd3Ni2As3 P 6₃/m,P 6₃, or P 6₃22 Hex

II/A.05-115 Polkanovite! Rh12As7 P 6₃m 6/m

II/A.05-120 Genkinite (Pt,Pd)4Sb3 P 4₁2₁2 4 2 2

Other Majakite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)

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

Majakite

PdNiAs
Dana No: 2.4.16.1 Strunz No: II/A.05-110
Locality:

Notes: