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About DietzeiteHide

Ca2(IO3)2(CrO4) · H2O
Golden yellow
Specific Gravity:
3.617 - 3.698
Crystal System:
After August Dietze (-1893), Chilean chemist, who first described the species.
This page provides mineralogical data about Dietzeite.

Classification of DietzeiteHide

Approved, 'Grandfathered' (first described prior to 1959)

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
K : Iodates: Trigonal [IO3] pyramids (mostly).
D : Iodates with additional anions, with H2O
Dana 7th ed.:

1 : Miscellaneous

29 : Iodates

Physical Properties of DietzeiteHide

Golden yellow
Light yellow
3½ on Mohs scale
On {100} incomplete.
3.617 - 3.698 g/cm3 (Measured)    3.61 g/cm3 (Calculated)

Optical Data of DietzeiteHide

Biaxial (-)
RI values:
nα = 1.825 nβ = 1.842 nγ = 1.857
Measured: 86° , Calculated: 84°
Max Birefringence:
δ = 0.032
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of DietzeiteHide

Ca2(IO3)2(CrO4) · H2O

Crystallography of DietzeiteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 10.11 Å, b = 7.23 Å, c = 13.96 Å
β = 106.62°
a:b:c = 1.398 : 1 : 1.931
Unit Cell V:
977.78 ų (Calculated from Unit Cell)
Crystals tabular {100} and elongated [001]. Fibrous crusts; columnar.

Type Occurrence of DietzeiteHide

Synonyms of DietzeiteHide

Other Language Names for DietzeiteHide

Related Minerals - Nickel-Strunz GroupingHide

4.KD.10George-erickseniteNa6CaMg(IO3)6(CrO4)2 · 12H2OMon. 2/m : B2/b

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
29.4BrüggeniteCa(IO3)2 · H2OMon.
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

Slowly soluble in cold water, faster in hot water.
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 DietzeiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Dietze (1891) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 19: 449 (as Jodchromate).
Osann (1894) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 23: 588 (as Dietzeit).
Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 68.
Gossner and Mussgnug (1930) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 75: 410.
Bandy (1937) American Mineralogist: 22: 929.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 318-319.
Canadian Mineralogist (1993): 31: 313-319.

Internet Links for DietzeiteHide

Localities for DietzeiteHide

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.
  • Antofagasta
    • Antofagasta Province
USGS Bulletin 491
    • Morro Moreno
Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig (1894): 23: 588; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 319.
    • Tocopilla Province
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 319; Anthony, J.W., R.A. Bideaux, K.W. Bladh, M.C. Nichols: Handbook of Mineralogy, Vol. V (2003).
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 646.
  • Tarapacá
    • El Tamarugal Province
American Mineralogist: 79: 1003-1008.
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