Chloromenite Mineral Data

General Chloromenite Information

Chemical Formula:

Cu9O2(SeO3)4Cl6

Composition:

Molecular Weight = 1,324.46 gm

Copper 43.18 % Cu 54.05 % CuO

Selenium 23.85 % Se 33.51 % SeO₂

Chlorine 16.06 % Cl 16.06 % Cl

- % Cl -3.62 % -O=Cl₂

Oxygen 16.91 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu₉O₂(SeO₃)₄Cl₆

Environment:

Found in a fumarole.

IMA Status:

Approved IMA 1996 (Dana # Added)

Locality:

The Northern Breach of the Great Fissure Tolbachik eruption, Kamchatka Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

The name comes from chloros, green, and mene, moon, referring to the presence of essential selenium.

Synonym:

IMA1996-048

Chloromenite Image

Images:

Click Here for Larger Chloromenite Image

Chloromenite Melanothallite

Comments: Olive green crystalline chloromenite on blue-green melanothallite.
Location: North Break, Second Cone of main fracture eruption, Tolbachik Volcano, Kamchatka District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Chloromenite Crystallography

Axial Ratios:

a:b:c =2.2489:1:2.072

Cell Dimensions:

a = 14.11, b = 6.274, c = 13, Z = 2; beta = 113° V = 1,059.35 Den(Calc)= 4.15

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: I2/m

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

By Intensity(I/I_o): 3.45(1), 5.56(0.83), 11.29(0.63),

Forms:

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Forms: ( 0 1 1) ( 1 1 0) ( 3 1 0) ( 1 0 1) ( 0 0 1)

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Crystal Structure:

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Krivovichev S V , Filatov S K , Semenova T F , Rozhdestvenskaya I V , Zeitschrift fur Kristallographie , 213 (1998) p.645-649, Crystal chemistry of inorganic compounds based on chains of oxocentered, tetrahedra I. Crystal structure of chloromenite, Cu9O2(SeO3)4Cl6, Locality: Tolbachik volcano, Kamchatka, Russia

Physical Properties of Chloromenite

Cleavage:

{101} Perfect

Color:

Tobacco green.

Diaphaneity:

Transparent

Fracture:

Plastic - Deforms like soft, plastic materials.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

1.5-2.5 - Hardness very near Gypsum

Luster:

Vitreous (Glassy)

Streak:

yellowish green

Optical Properties of Chloromenite

Gladstone-Dale:

CI calc= -0.054 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2193,KC= 0.208
Ncalc = 1.86

Optical Data:

Biaxial (-), a=1.87, b=1.92, g=1.94, bire=0.0700

Calculated Properties of Chloromenite

Electron Density:

Bulk Density (Electron Density)=3.83 gm/cc
note: Specific Gravity of Chloromenite =4.15 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Chloromenite= 38.99 barns/electron
U=PE_Chloromenite x rElectron Density= 149.29 barns/cc.

Radioactivity:

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

Chloromenite Classification

Dana Class:

34.06.07.01 (34)Selenites - Tellurites - Sulfites

(34.06)Dana Type

(34.06.07)Chloromenite Group

34.06.07.01 Chloromenite! Cu9O2(SeO3)4Cl6 I2/m 2/m

34.06.07.02 Georgbokiite! Cu5O2(SeO3)2Cl2 P 2₁/c 2/m

34.06.07.03 Parageorgbokiite! Cu5O2(SeO3)2Cl2 P 2₁/c 2/m

Strunz Class:

04.JG.10 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.10 Chloromenite! Cu9O2(SeO3)4Cl6 I2/m 2/m

Other Chloromenite Information

References:

NAME( CanMin, 8/99) PHYS. PROP.(AmMin, V84, p1464) OPTIC PROP.(MinRec)

See Also:

Links to other databases for Chloromenite :
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 Chloromenite Specimen Label here :

Chloromenite

Cu9O2(SeO3)4Cl6
Dana No: 34.06.07.01 Strunz No: 04.JG.10
Locality:

Notes: