Khatyrkite Mineral Data

Khatyrkite Mineral Data +

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General Khatyrkite Information

Chemical Formula:

(Cu,Zn)Al2

Composition:

Molecular Weight = 117.97 gm

Aluminum 45.74 % Al

Zinc 13.86 % Zn

Copper 40.40 % Cu

______

100.00 %

Empirical Formula:

Cu_0.75Zn_0.25Al₂

Environment:

In black slick washed from greenish gray cover weathering from serpentine. Intimately intergrown with cupalite in small grains.

IMA Status:

Approved IMA 1985

Locality:

Khatirskii ultramafic zone of the Koryak-Kamchata fold area, Koryak Mountains, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 42517

PDF 25-12

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Khatyrkite Crystallography

Axial Ratios:

a:c = 1:0.8056

Cell Dimensions:

a = 6.07, c = 4.89, Z = 4; V = 180.17 Den(Calc)= 4.35

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 4/mcm

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

By Intensity(I/I_o): 4.27(1), 2.119(0.8), 2.372(0.7),3.04(0.5), 1.894(0.4), 2.156(0.2),

Physical Properties of Khatyrkite

Cleavage:

[100] Indistinct

Color:

Steel-gray yellow.

Diaphaniety:

Opaque

Fracture:

Malleable - Deforms rather than breaking apart with a hammer.

Habit:

Inclusions - Generally found as inclusions in other minerals.

Hardness:

5 - Apatite

Luster:

Metallic

Streak:

dark gray

Optical Properties of Khatyrkite

Optical Data:

NCalc= 1.9 - from Gladstone-Dale relationship (KC = 0.2062) where Ncalc=Dcalc*KC+1

RL Anisotrophism:

Distinct, grayish brown to red.

RL Color:

Basal sections bluish, otherwise, blue to creamy pink.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Khatyrkite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
440 nm	75.80	70.10
460 nm	75.60	70.30
480 nm	75.90	71.50
500 nm	76.50	73.00
520 nm	76.40	74.50
540 nm	76.10	76.10
560 nm	75.30	77.40
580 nm	74.30	78.40
600 nm	73.20	79.20
620 nm	72.00	79.70
640 nm	70.70	79.80
660 nm	69.50	79.90
680 nm	68.50	79.80
700 nm	67.50	79.50

**Calculated Relative Intensity Colors of Khatyrkite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	130%
R₁
R₂

Calculated Properties of Khatyrkite

Electron Density:

r_electron=4.07 gm/cc
note: r_Khatyrkite=4.35 gm/cc.

Fermion Index

Fermion Index = 0.00568
Boson Index = 0.99432

Photoelectric:

PE_Khatyrkite= 26.36 barns/electron
U=PE_Khatyrkite x r_electron= 107.39 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Khatyrkite is Not Radioactive

Khatyrkite Classification

Dana Class:

1.1.15.2 (1)Native Elements

(1.1)with metallic elements other than the platinum group

(1.1.15)Dana Group

1.1.15.1 Cupalite (Cu,Zn)Al Unk Ortho

1.1.15.2 Khatyrkite (Cu,Zn)Al2 I 4/mcm 4/m 2/m 2/m

Strunz Class:

I/A.03-20 I - Elements

I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides

I/A.03 - Aluminium - Khatyrkite series

I/A.03-05 Aluminum Al F m3m,P m3m 4/m 3 2/m

I/A.03-10 Cupalite (Cu,Zn)Al Unk Ortho

I/A.03-20 Khatyrkite (Cu,Zn)Al2 I 4/mcm 4/m 2/m 2/m

Other Khatyrkite Information

References:

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

See Also:

Links to other databases for Khatyrkite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Khatyrkite

(Cu,Zn)Al2
Dana No: 1.1.15.2 Strunz No: I/A.03-20
Locality:

Notes: