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Moschelite

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Formula:
(Hg
+
2
)I
 
2
System:TetragonalColour:Citrus-yellow, changing ...
Hardness:1 - 2
This page provides mineralogical data about Moschelite.

Classification of Moschelite

IMA status:Approved
Strunz 8th edition ID:3/A.05-30
Nickel-Strunz 10th (pending) edition ID:3.AA.30

3 : HALIDES
A : Simple halides, without H2O
A : M:X = 1:1, 2:3, 3:5, etc.
Dana 8th edition ID:9.1.8.3

9 : NORMAL HALIDES
1 : AX
Hey's CIM Ref.:8.5.10

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
5 : Halides of Zn and Hg
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Type Occurrence of Moschelite

Type Locality:Backofen Mine, Landsberg (Moschellandsberg), Alsenz-Obermoschel, Palatinate, Rhineland-Palatinate, Germany

Physical Properties of Moschelite

Lustre:Adamantine
Colour:Citrus-yellow, changing immediately to dark olive-green on exposure to light
Streak:Brown
Hardness (Mohs):1 - 2
Tenacity:Sectile

Crystallography of Moschelite

Crystal System:Tetragonal
Class (H-M):4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:I4/mmm {I4/m 2/m 2/m}
Cell Parameters:a = 4.8974(9) Å, c = 11.649(2) Å
Ratio:a:c = 1 : 2.379
Unit Cell Volume:V 279.4 ų
Z:2
Twinning:May be twinned by non-merohedry.
X-Ray Powder Diffraction:
d-spacingIntensity
3.483 (10)
2.231 (9)
2.896 (6)
2.099 (6)
4.537 (2)
1.881 (2)
1.242 (2)

Chemical Properties of Moschelite

Formula:
(Hg
+
2
)I
 
2
Essential elements:Hg, I
All elements listed in formula:Hg, I

Relationship of Moschelite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.AA.05Marshite
CuI
3.AA.05Miersite
(Ag,Cu)I
3.AA.05Nantokite
CuCl
3.AA.05UM1999-11:I:CuS
Cu(I,S)
3.AA.10Iodargyrite
AgI
3.AA.10Tocornalite
(Ag,Hg)I
3.AA.15Bromargyrite
AgBr
3.AA.15Chlorargyrite
AgCl
3.AA.20Carobbiite
KF
3.AA.20Griceite
LiF
3.AA.20Halite
NaCl
3.AA.20Sylvite
KCl
3.AA.20Villiaumite
NaF
3.AA.25Salammoniac
NH
 
4
Cl
3.AA.25UM1998-03-Cl:Tl
TlCl
3.AA.25Lafossaite
Tl(Cl,Br)
3.AA.30Calomel
(Hg
+
2
)Cl
 
2
3.AA.30Kuzminite
(Hg
+
2
)(Br,Cl)
 
2
3.AA.35Neighborite
NaMgF
 
3
3.AA.40Chlorocalcite
KCaCl
 
3
3.AA.45Kolarite
PbTeCl
 
2
3.AA.50Radhakrishnaite
PbTe
 
3
(Cl,S)
 
2
3.AA.55Challacolloite
KPb
 
2
Cl
 
5
3.AA.60Hephaistosite
TlPb
 
2
Cl
 
5
Related Minerals - Hey's Index Grouping:

- +
8.5.1Simonkolleite
Zn
 
5
Cl
 
2
(OH)
 
8
 · H
 
2
O
8.5.2Calomel
(Hg
+
2
)Cl
 
2
8.5.3Terlinguaite
(Hg
+
2
)
 
0.5
Hg
2+
 
ClO
8.5.4Poyarkovite
(Hg
+
2
)
 
1.5
ClO
8.5.5Pinchite
Hg
2+
5
Cl
 
2
O
 
4
8.5.6Eglestonite
(Hg
+
2
)
 
3
Cl
 
3
O(OH)
8.5.7Kadyrelite
(Hg
+
2
)
 
2
(Br,Cl)
 
2
O
8.5.8Comancheite
Hg
2+
13
(Cl,Br)
 
8
O
 
9
8.5.9Kuzminite
(Hg
+
2
)(Br,Cl)
 
2
8.5.11Tocornalite
(Ag,Hg)I

Other Names for Moschelite

Synonyms:
IMA1987-038
Other Languages:
German:Moschelit
Russian:Мошелит
Spanish:Moschelita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Moschelite

Reference List:

- +
Neues Jahrbuch für Mineralogie, Monatshefte (1989): 524-526.

M. Kars, T. Roisnel, V. Dorcet, A. Rebbah and O.-D. L. Carlos (2012): Redetermination of Hg2I2. Acta Crystallogr. E68, i11.

Internet Links for Moschelite

Search Engines:
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    • External Links:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Moschelite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
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  • Find Moschelite on www.crystalclassics.co.uk
  • Top quality minerals from Kristalle of California
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  • Fabre Minerals - search for Moschelite specimens
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    • Localities for Moschelite

    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Germany
     
    • Rhineland-Palatinate
      • Palatinate
        • Alsenz-Obermoschel
          • Landsberg (Moschellandsberg)
    		Lapis 2001(6), 13-40
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