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Brüggenite

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About BrüggeniteHide

Formula:
Ca(IO3)2 · H2O
Colour:
Colorless to bright yellow.
Lustre:
Vitreous
Hardness:
Specific Gravity:
4.24
Crystal System:
Monoclinic
Name:
Named by Mary E. Mrose, G.E. Ericksen, and J.W. Marinenko in 1970 in honor of Johannes Brüggen Messtorff, better known by his hispanized name Juan Brüggen (25 April 1887, Lübeck, Germany – 7 March 1953, Santiago, Chile), geologist. He is known for his extensive treaty 'Fundamentos de la geología de Chile'.
A rare iodate species.


Classification of BrüggeniteHide

Approved
Approval Year:
1970
First Published:
1971
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 ed.:
21.1.2.1
21.1.2.1

21 : NORMAL IODATES
1 : Miscellaneous
29.4

29 : Iodates

Physical Properties of BrüggeniteHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
Colorless to bright yellow.
Streak:
(not reported)
Hardness:
3½ on Mohs scale
Tenacity:
Brittle
Density:
4.24 g/cm3 (Measured)    4.244 g/cm3 (Calculated)

Optical Data of BrüggeniteHide

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

Formula:
Ca(IO3)2 · H2O

Crystallography of BrüggeniteHide

Crystal System:
Monoclinic
Morphology:
Crystals subhedral, to 1 cm, short prismatic, elongated along [001], with {010} and {011}, other faces irregular, and a diamond-shaped cross-section showing {320}.

Type Occurrence of BrüggeniteHide

Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 122445.
Geological Setting of Type Material:
Nitrate deposit
Associated Minerals at Type Locality:

Synonyms of BrüggeniteHide

Other Language Names for BrüggeniteHide

Related Minerals - Nickel-Strunz GroupingHide

4.KC.05BellingeriteCu3(IO3)6 · 2H2OTric. 1 : P1

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

29.1SalesiteCu(IO3)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
29.2BellingeriteCu3(IO3)6 · 2H2OTric. 1 : P1
29.3LautariteCa(IO3)2Mon. 2/m : P21/b
29.5DietzeiteCa2(IO3)2(CrO4) · H2OMon. 2/m : P21/b
29.6SeeligeritePb3(IO3)OCl3Orth. mm2 : Cmm2
29.7SchwartzembergitePb5H2(IO2)O4Cl3Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
29.8HectorfloresiteNa9(SO4)4(IO3)Mon. 2/m : P21/b

Other InformationHide

Thermal Behaviour:
DTA study shows that brüggenite dehydrates to lautarite at 220-325 degrees.
Notes:
Slowly soluble in cold H2O; readily soluble in hot H2O.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for BrüggeniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mrose, M.E., Ericksen, G.E., Marinenko, J.W. (1971) Brüggenite, Ca(IO3)2·H2O, a new saline mineral from the Chilean nitrate deposits. Program and Abstracts, 20th Clay Minerals Conference: 20: 13-13.
Mrose, M.E., Ericksen, G.E., Marinenko, J.W. (1971) Crystal chemistry of the calcium iodates in the system Ca(IO3)2-H2O. Geological Society of America, Abstracts Annual Meetings: 1971: 653-653.
Fleischer, M. (1972) New mineral names. American Mineralogist: 57: 594-598.
Fleischer, M. (1972) New mineral names. American Mineralogist: 57: 1909-1914.
Ericksen, G.E., Mrose, M.E., Marinenko, J.W. (1974) Mineralogical studies of the nitrate deposits of Chile. IV. Brüggenite, Ca(IO3)2·H2O, a new saline mineral. Journal of Research of the United States Geological Survey: 2: 471-478.
Alici, E., Schmidt, T., Lutz, H. (1992) Zur kenntnis des calciumbromats und -iodats, kristallstruktur, röntgenographische, IR- und Raman-spektroskopische und thermo- analytische untersuchungen. Zeitschrift für Anorganische und Allgemeine Chemie: 608: 135-144.

Internet Links for BrüggeniteHide

Localities for BrüggeniteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Chile (TL)
 
  • Antofagasta Region
    • Antofagasta Province
      • Taltal
        • Oficina Lautaro
Progr.Abstr.,Geol.Soc.Amer.,Ann. Meeting (1971) p. 653; Am Min 57 (1972),
  • Tarapacá Region
    • El Tamarugal Province
American Mineralogist: 79: 1003-1008.
Mineral and/or Locality  
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