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Seeligerite

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Big Photo

San Francisco Mine (Beatrix Mine), Caracoles, Sierra Gorda District, Antofagasta Province, Antofagasta Region, Chile
© R.D.Green

Show Seeligerite Photos (25)



Formula:
Pb
 
3
(IO
 
3
)OCl
 
3
System:OrthorhombicColour:Bright yellow
Name:Named after Erich Seeliger, Professor of Mineralogy.
This page provides mineralogical data about Seeligerite.

Classification of Seeligerite

IMA status:Approved
Strunz 8th edition ID:4/L.03-10
Strunz 9th edition ID:4.KB.
Nickel-Strunz 10th (pending) edition ID:4.KB.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
K : Iodates: Trigonal [IO3] pyramids (mostly).
B : Iodates with additional anions, without H2O
Dana 7th edition ID:22.1.2.1
Dana 8th edition ID:22.1.2.1

22 : IODATES CONTAINING HYDROXYL OR HALOGEN
1 : Miscellaneous
Hey's CIM Ref.:29.6

29 : Iodates
mindat.org URL:http://www.mindat.org/min-3603.html
Please feel free to link to this page.

Type Occurrence of Seeligerite

Type Locality:Santa Ana Mine, Caracoles, Sierra Gorda District, Antofagasta Province, Antofagasta Region, Chile

Physical Properties of Seeligerite

Lustre:Vitreous, Waxy
Colour:Bright yellow

Crystallography of Seeligerite

Crystal System:Orthorhombic
Class (H-M):mm2 - Pyramidal
Space Group:Cmm2
Cell Parameters:a = 7.971(2) Å, b = 7.976(2) Å, c = 27.341(5) Å
Ratio:a:b:c = 0.999 : 1 : 3.428
Unit Cell Volume:V 1738.3 ų
Z:8
Comment:The TEM investigation has revealed additional superlattice reflections.

Optical Data of Seeligerite

Type:Biaxial (-)
RI values: nα = 2.120 nβ = 2.320 nγ = 2.320
2V:Measured: 4°
Maximum Birefringence:δ = 0.200

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r < v

Chemical Properties of Seeligerite

Formula:
Pb
 
3
(IO
 
3
)OCl
 
3
Essential elements:Cl, I, O, Pb
All elements listed in formula:Cl, I, O, Pb

Relationship of Seeligerite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.KB.05Salesite
Cu(IO
 
3
)(OH)
4.KB.10Schwartzembergite
Pb
 
5
H
 
2
(IO
 
2
)O
 
4
Cl
 
3
Related Minerals - Hey's Index Grouping:

- +
29.1Salesite
Cu(IO
 
3
)(OH)
29.2Bellingerite
Cu
 
3
(IO
 
3
)
 
6
 · 2H
 
2
O
29.3Lautarite
Ca(IO
 
3
)
 
2
29.4Brüggenite
Ca(IO
 
3
)
 
2
 · H
 
2
O
29.5Dietzeite
Ca
 
2
(IO
 
3
)
 
2
(CrO
 
4
) · H
 
2
O
29.7Schwartzembergite
Pb
 
5
H
 
2
(IO
 
2
)O
 
4
Cl
 
3
29.8Hectorfloresite
Na
 
9
(SO
 
4
)
 
4
(IO
 
3
)

Other Names for Seeligerite

Synonyms:
IMA1970-036
Other Languages:
German:Seeligerit
Spanish:Seeligerita

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 Seeligerite

Reference List:

- +
American Mineralogist (1972): 57: 327-328.

Bindi, L., M. D. Welch, P. Bonazzi, G. Pratesi, & S. Menchetti (2008): The crystal structure of seeligerite, Pb3IO4Cl3, a rare Pb-I-oxychloride from the San Rafael mine, Sierra Gorda, Chile. Mineralogical Magazine 72, 771-783.

Internet Links for Seeligerite

Search Engines:
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    • External Links:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Seeligerite details from Handbook of Mineralogy (PDF)
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    • Localities for Seeligerite

    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.
    Chile
     
    • Antofagasta Region
      • Antofagasta Province
    		Lukas Kruszewski collection
        • Cerro Palestina
          • Estación Cerro Negro
            • Magallanes district
    		Samples analysed by Dr. Jochen Schluter (Hamburg University), Germany.
    Peebles F./Ruiz Fuller C.(1988); "Yacimientos Metalíferos de Chile", Fondecyt, Stgo. de Chile.
        • Sierra Gorda District
          • Caracoles
    		V. Sapienza collection
    Mr. Terry Szenics; V. Sapienza collection
    M. Dini specimens
    Brent Thorne specimen
    Neues Jahrb.Min.,Mh.(1971) 210-217
            • Sierra Deseada
    		Jasun McAvoy specimen
    • Tarapacá Region
      • Iquique Province
        • Challacollo
    		maurizio dini collection - analysed material
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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