Ilinskite Mineral Data

General Ilinskite Information

Chemical Formula:

NaCu5O2(SeO3)2Cl

Composition:

Molecular Weight = 662.09 gm

Sodium 3.47 % Na 4.68 % Na₂O

Copper 47.99 % Cu 54.03 % Cu₂O

Selenium 23.85 % Se 33.52 % SeO₂

Chlorine 5.35 % Cl 5.35 % Cl

- % Cl -1.21 % -O=Cl₂

Oxygen 19.33 % O

______ ______

100.00 % 96.38 % = TOTAL OXIDE

Empirical Formula:

NaCu₅O₂(SeO₃)₂Cl

Environment:

From fumarolic exhalations.

IMA Status:

Approved IMA 1996 (Dana # Added)

Locality:

On the South and North breaks of the Tolbachik Main Fracture eruption, Kamchatka, Russia. Link to MinDat.org Location Data.

Name Origin:

For G. A. Ilinskiy (1927-1996) of St. Petersburg University.

Name Pronunciation:

Ilinskite + Pronunciation

Synonym:

IMA1996-027

Ilinskite Image

Images:

Ilinskite

Comments: Dark green crystals of ilinskite on matrix.
Location: Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Ilinskite Crystallography

Axial Ratios:

a:b:c =0.5911:1:0.3627

Cell Dimensions:

a = 10.482, b = 17.732, c = 6.432, Z = 4; V = 1,195.50 Den(Calc)= 3.68

Crystal System:

Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pbnm

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

By Intensity(I/I_o): 5.24(1), 8.84(0.6), 3.251(0.4),2.955(0.27), 2.626(0.25), 2.531(0.12), 9.01(0.1),

Physical Properties of Ilinskite

Cleavage:

{100} Perfect

Color:

Emerald green.

Density:

4.08

Diaphaneity:

Transparent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

1.5-2 - Talc-Gypsum

Luster:

Vitreous - Adamantine

Streak:

light green

Optical Properties of Ilinskite

Gladstone-Dale:

CI meas= -0.046 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.16 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2524,KPDmeas= 0.2277,KC= 0.2176
Ncalc = 1.8 - 1.89

Optical Data:

Biaxial (-), a=1.845, b=1.965-1.968, g=1.975, bire=0.1300, 2V(Calc)=24-30, 2V(Meas)=20. Dispersion dispersion not observed.

Calculated Properties of Ilinskite

Electron Density:

Bulk Density (Electron Density)=3.76 gm/cc
note: Specific Gravity of Ilinskite =4.08 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Ilinskite= 40.55 barns/electron
U=PE_Ilinskite x rElectron Density= 152.44 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ilinskite is Not Radioactive

Ilinskite Classification

Dana Class:

33.03.04.01 (33)Selenates and Tellurates

(33.03)with other anion groups

(33.03.04)Dana Group

33.03.04.01 Ilinskite! NaCu5O2(SeO3)2Cl Pbnm 2/m 2/m 2/m

Strunz Class:

04.JG.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.J - Arsenites, Antimonites, Bismuthites, Sulfites,

04.JG -Selenites with additional anions, without H2O

04.JG.20 Ilinskite! NaCu5O2(SeO3)2Cl Pbnm 2/m 2/m 2/m

Other Ilinskite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.83,p186,1998) OPTIC PROP.(MinRec)

See Also:

Links to other databases for Ilinskite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Ilinskite

NaCu5O2(SeO3)2Cl
Dana No: 33.03.04.01 Strunz No: 04.JG.20
Locality:

Notes:

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