Kutinaite Mineral Data

Kutinaite Mineral Data +

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General Kutinaite Information

Chemical Formula:

Cu14Ag6As7

Composition:

Molecular Weight = 2,086.72 gm

Copper 43.85 % Cu

Silver 31.02 % Ag

Arsenic 25.13 % As

______

100.00 %

Empirical Formula:

Cu_14.4Ag₆As₇

Environment:

In carbonate-rich hydrothermal veins. New unit cell data from synthetic material.

IMA Status:

Approved IMA 1970

Locality:

Cerny Dul, Czech Republic. Link to MinDat.org Location Data.

Name Origin:

Named for Jan Kutina (1924-), Czech mineralogist.

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Kutinaite Crystallography

Cell Dimensions:

a = 11.78079, Z = 4; V = 1,635.02 Den(Calc)= 8.48

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: P m3m

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

By Intensity(I/I_o): 2.078(1), 2.259(1), 2.702(0.9),

Crystal Structure:

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Karanovic L , Poleti D , Makovicky E , Balic-Zunic T , Makovicky M , The Canadian Mineralogist , 40 (2002) p.1437-1449, The crystal structure of synthetic kutinaite, Cu14Ag6As7

Physical Properties of Kutinaite

Cleavage:

None

Color:

Silver gray.

Density:

8.38

Diaphaniety:

Opaque

Fracture:

Elastic - Fragments which spring back after bending.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Metallic

Optical Properties of Kutinaite

RL Color:

Grayish white to light blue-gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Kutinaite in Air**
λ	R	∑ R(λ)
400 nm	49.60
420 nm	48.80
440 nm	48.00
460 nm	46.80
480 nm	45.60
500 nm	44.50
520 nm	43.50
540 nm	42.60
560 nm	42.00
580 nm	41.40
600 nm	41.10
620 nm	40.80
640 nm	40.50
660 nm	40.40
680 nm	40.50
700 nm	40.90

**Calculated Relative Intensity Colors of Kutinaite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%
R

Calculated Properties of Kutinaite

Electron Density:

r_electron=7.56 gm/cc
note: r_Kutinaite=8.48 gm/cc.

Fermion Index

Fermion Index = 0
Boson Index = 1

Photoelectric:

PE_Kutinaite= 118.05 barns/electron
U=PE_Kutinaite x r_electron= 892.90 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kutinaite is Not Radioactive

Kutinaite Classification

Dana Class:

2.2.2.2 (2)Sulfides - Including Selenides and Tellurides

(2.2)where Am Bn Xp, with (m+n):p=3:1

(2.2.2)Dana Group

2.2.2.1 Domeykite Cu3As I 43d 4 3m

2.2.2.2 Kutinaite Cu14Ag6As7 P m3m 4/m 3 2/m

2.2.2.3 Dienerite Ni3As I 43d 4 3m

Strunz Class:

II/A.01-40 II - Sulfides and sulphosalts

II/A - Alloys and alloylike compounds, with Copper, Silver, Gold and Nickel

II/A.01 - Algodonite - Cuprostibite series

II/A.01-10 Algodonite Cu6As P 6₃/mmc 6/m 2/m 2/m

II/A.01-20 Domeykite Cu3As I 43d 4 3m

II/A.01-30 Horsfordite Cu5Sb Unk Cubic

II/A.01-40 Kutinaite Cu14Ag6As7 P m3m 4/m 3 2/m

II/A.01-50 Koutekite Cu5As2 P 6₃/mmc 6/m 2/m 2/m

II/A.01-60 Novakite (Cu,Ag)21As10 C 2/m ? 2/m

II/A.01-70 Cuprostibite Cu2(Sb,Tl) P 4/nmm 4/m 2/m 2/m

Other Kutinaite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8, AmMin, v 88, p 1179) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Kutinaite :
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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Kutinaite

Cu14Ag6As7
Dana No: 2.2.2.2 Strunz No: II/A.01-40
Locality:

Notes: