Moschelite Mineral Data

General Moschelite Information

Chemical Formula:

Hg+2I2

Composition:

Molecular Weight = 654.99 gm

Mercury 61.25 % Hg 63.69 % Hg₂O

Iodine 38.75 % I 38.75 % I

- % I -2.44 % -O=I₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Hg₂I₂

Environment:

From the mine dumps.

IMA Status:

Approved IMA 1989

Locality:

Backofen mine, Moschel landsberg district, Opermoschel, Rhineland Pjalz, Germany. Link to MinDat.org Location Data.

Name Origin:

After the locality.

Name Pronunciation:

Moschelite + Pronunciation

Synonym:

ICSD 35543

PDF 6-245

Moschelite Crystallography

Axial Ratios:

a:c = 1:2.35772

Cell Dimensions:

a = 4.92, c = 11.6, Z = 2; V = 280.79 Den(Calc)= 7.75

Crystal System:

Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm

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

By Intensity(I/I_o): 3.483(1), 2.231(0.9), 2.896(0.6),

Physical Properties of Moschelite

Cleavage:

{???} Imperfect

Color:

Lemon yellow, Dark olive green.

Diaphaneity:

Translucent to Opaque

Fracture:

Brittle - Sectile - Brittle fracture with slightly sectile shavings possible.

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

1.5-2 - Talc-Gypsum

Luster:

Adamantine

Streak:

brown

Optical Properties of Moschelite

Optical Data:

NCalc= 2.39 - from Gladstone-Dale relationship (KC = 0.1797) where Ncalc=Dcalc*KC+1

Calculated Properties of Moschelite

Electron Density:

Bulk Density (Electron Density)=6.29 gm/cc
note: Specific Gravity of Moschelite =7.75 gm/cc.

Fermion Index:

Fermion Index = 0.18
Boson Index = 0.82

Photoelectric:

PE_Moschelite=1,227.94 barns/electron
U=PE_Moschelite x rElectron Density=7,729.61 barns/cc.

Radioactivity:

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

Moschelite Classification

Dana Class:

09.01.08.03 (09)Anhydrous and Hydrated Halides

(09.01)where A X

(09.01.08)Calomel Group

09.01.08.01 Calomel Hg2Cl2 I 4/mmm 4/m 2/m 2/m

09.01.08.02 Kuzminite Hg2(Br,Cl)2 I 4/mmm 4/m 2/m 2/m

09.01.08.03 Moschelite Hg2I2 I 4/mmm 4/m 2/m 2/m

Strunz Class:

03.AA.30 03 - HALIDES

03.A - Simple Halides, Without H2O

03.AA -M:X = 1:1, 2:3, 3:5, etc.

03.AA.30 Calomel Hg2Cl2 I 4/mmm 4/m 2/m 2/m

03.AA.30 Kuzminite Hg2(Br,Cl)2 I 4/mmm 4/m 2/m 2/m

03.AA.30 Moschelite Hg2I2 I 4/mmm 4/m 2/m 2/m

Other Moschelite Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.75,p1211,1990)

See Also:

Links to other databases for Moschelite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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

Moschelite

Hg+2I2
Dana No: 09.01.08.03 Strunz No: 03.AA.30
Locality:

Notes:

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