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Brüggenite

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Pampa del Pique III, Oficina Lautaro, Antofagasta Region, Chile
© 2007, JGW

Formula:
Ca(IO
 
3
)
 
2
·H
 
2
O
System:MonoclinicColour:Colorless to bright ...
Lustre:VitreousHardness:3½
Name:Named for Juan Bruggen M. (1887-1953), Chilean geologist.


A rare iodate species.

Classification of Brüggenite

IMA status:Approved 1970
Strunz 8th edition ID:4/L.01-20
Nickel-Strunz 10th (pending) edition ID:4.KC.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
K : Iodates: Trigonal [IO3] pyramids (mostly).
C : Iodates without additional anions, with H2O
Dana 7th edition ID:21.1.2.1
Dana 8th edition ID:21.1.2.1

21 : NORMAL IODATES
1 : Miscellaneous
Hey's CIM Ref.:29.4

29 : Iodates
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Type Occurrence of Brüggenite

Type Locality:Pampa del Pique III, Oficina Lautaro, Antofagasta Region, Chile

Physical Properties of Brüggenite

Lustre:Vitreous
Colour:Colorless to bright yellow.
Streak:(not reported)
Hardness (Mohs):3½

Crystallography of Brüggenite

Crystal System:Monoclinic

Optical Data of Brüggenite

Type:Biaxial (-)
RI values: nα = 1.776 nβ = 1.799 nγ = 1.821
2V:Measured: 86° to 96°, Calculated: 86°
Maximum Birefringence:δ = 0.045

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

Chemical Properties of Brüggenite

Formula:
Ca(IO
 
3
)
 
2
·H
 
2
O
Essential elements:Ca, H, I, O
All elements listed in formula:Ca, H, I, O

Relationship of Brüggenite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.KC.05Bellingerite
Cu
 
3
(IO
 
3
)
 
6
·2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
29.1Salesite
Cu[OH|IO
 
3
]
29.2Bellingerite
Cu
 
3
(IO
 
3
)
 
6
·2H
 
2
O
29.3Lautarite
Ca(IO
 
3
)
 
2
29.5Dietzeite
Ca
 
2
[CrO
 
4
|(IO
 
3
)
 
2
] · H
 
2
O
29.6Seeligerite
Pb
 
3
IO
 
4
Cl
 
3
29.7Schwartzembergite
Pb
2+
5
I
3+
 
O
 
6
H
 
2
Cl
 
3
29.8Hectorfloresite
Na
 
9
[IO
 
3
|(SO
 
4
)
 
4
]

Other Names for Brüggenite

Synonyms:
IMA1970-040
Other Languages:
German:Brüggenit
Russian:Брюггенит
Spanish:Brüggenita

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 Brüggenite

Reference List:American Mineralogist: 57: 1911.

Zeitschrift für anorganische und allgemeine Chemie: 608: 135-144.

Internet Links for Brüggenite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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  • Brüggenite details from Handbook of Mineralogy (PDF)
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    Localities for Brüggenite

    (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
      • Oficina Lautaro
    		Progr.Abstr.,Geol.Soc.Amer.,Ann. Meeting (1971) p. 653; Am Min 57 (1972),
    • Tarapacá Region
      • Iquique Province
    		American Mineralogist: 79: 1003-1008.
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