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About O'DanieliteHide

Pale violet
Specific Gravity:
> 4.24
Crystal System:
Named in 1980 by Keller and Hess in honor of Herbert O'Daniel (7 June 1903, Cologne, German Empire - 15 August 1977, Frankfurt, West Germany), professor of mineralogy, University of Munich, Germany and editor of Neues Jahrbuch fur Mineralogie.

Alluaudite Group. A synthetic Mg analogue is known: 'Unnamed (Na-Mg Arsenate Hydroxyarsenate)'.

Ðorðević et al. (2015) published data on the crystal structure of a few synthetic alluaudite-like protonated arsenates, that include the NaZn3(AsO4)(AsO3OH)2 phase. This phase is the synthetic analogue of o'danielite; its structure is based on M1ZnOO4(OH)2 and M2ZnO6 octahedra that share edges to form chains || (101) and linked by the arsenate tetrahedra. The chains form two types of channels || c, one type holding OH groups, and the second one holding Na atoms.

Compare 'Unnamed (Na-Zn-H Arsenate Hydroxyarsenate)'.

Classification of O'DanieliteHide

First Published:
Dana 7th ed.:

20 : Arsenates (also arsenates with phosphate, but without other anions)
3 : Arsenates of Zn, Cd or Hg

Physical Properties of O'DanieliteHide

Pale violet
Hardness Data:
Handbook of Mineralogy: ~3
{010}, {100} perfect; {001} good?
> 4.24 g/cm3 (Measured)    4.49 g/cm3 (Calculated)

Optical Data of O'DanieliteHide

Biaxial (+)
RI values:
nα = 1.745 nβ = 1.753 nγ = 1.778
Measured: 60° , Calculated: 60°
Max Birefringence:
δ = 0.033
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r > v moderate
Optical Extinction:
X=b; Y ^ c = 18°

Chemical Properties of O'DanieliteHide

IMA Formula:
Common Impurities:

Crystallography of O'DanieliteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 12.113 Å, b = 12.445 Å, c = 6.793 Å
β = 112.87°
a:b:c = 0.973 : 1 : 0.546
Unit Cell V:
943.52 ų (Calculated from Unit Cell)
Neues Jahrbuch MM 395 (1988) structure; synthetic material (Ðorðević et al., 2015): a=12.023, b=12.385, c=6.750, β=112.79, V=926.7

X-Ray Powder DiffractionHide

Powder Diffraction Data:
6.22 Å(100)
5.59 Å(50)
3.56 Å(70)
3.26 Å(100)
2.78 Å(80)
2.72 Å(80)
1.687 Å(70)
1.664 Å(60)
ICDD 35-482

Type Occurrence of O'DanieliteHide

General Appearance of Type Material:
anhedral grains, flattened on {100} and elongated along [001]; intergrown blades, up to 3 mm
Place of Conservation of Type Material:
University of Stuttgart, Stuttgart, Germany (registration no. NM09); National Museum of Natural History, Washington, D.C., USA (registration no. 145966)
Geological Setting of Type Material:
Oxidized zone of zinc-rich polymetallic ore body.
Associated Minerals at Type Locality:
Keller, P., Hess, H., Dunn, P.J., Newbury, D. (1981) O'Danielite, NaZn3H2(AsO4)3, a new mineral from Tsumeb, Namibia. Neues Jahrbuch für Mineralogie, Monatshefte: 1981: 155-160.

Synonyms of O'DanieliteHide

Other Language Names for O'DanieliteHide

Relationship of O'Danielite to other SpeciesHide

Other Members of this group:
Alluaudite-Ca□4Ca4Mn2+4Fe3+8(PO4)12Mon. 2/m : B2/b
Alluaudite-Na□4Na4Mn2+4Fe3+8(PO4)12Mon. 2/m : B2/b
Arseniopleite(Ca,Na)NaMn2+(Mn2+,Mg,Fe2+)2(AsO4)3Mon. 2/m : P2/b
BadaloviteNa2Mg2Fe(AsO4)3Mon. 2/m : B2/b
BradaczekiteNaCu4(AsO4)3Mon. 2/m : B2/b
CalciojohilleriteNaCaMg3(AsO4)3Mon. 2/m : B2/b
CamanchacaiteNaCaMg2[AsO4][AsO3(OH)]2Mon. 2/m : B2/b
CanutiteNaMn3[AsO4][AsO3(OH)]2Mon. 2/m : B2/b
Caryinite(Na,Pb)(Ca,Na)CaMn2+2(AsO4)3Mon. 2/m
ErikapohliteCu3(Zn,Cu,Mg)4Ca2(AsO4)6·2H2O Mon. 2/m : B2/m
Ferroalluaudite-NaNaNa4Na4Fe2+4Fe3+8(PO4)12Mon. 2/m : B2/m
GroatiteNaCaMn2(PO4)(HPO4)2Mon. 2/m : B2/b
HagendorfiteNaCaMn2+Fe2+2(PO4)3Mon. 2/m : B2/b
Hagendorfite-(Na)(Na)Fe2+Mn2+(PO4)-(Na)(Na)Mon. 2/m : B2/b
HatertiteNa2(Ca,Na)(Fe3+,Cu)2(AsO4)3Mon. 2/m : B2/b
JohilleriteNa(Mg,Zn)3Cu(AsO4)3Mon. 2/m : B2/b
KeyiteCu2+3Zn4Cd2(AsO4)6 · 2H2OMon. 2/m
KhrenoviteNa3Fe3+2(AsO4)3Mon. 2/m : B2/b
MagnesiocanutiteNaMnMg2[AsO4]2[AsO2(OH)2]Mon. 2/m : B2/b
Magnesiohatertite(Na,Ca)2Ca(Mg,Fe3+)2(AsO4)3Mon. 2/m : B2/b
NickenichiteNa0.8Ca0.4Cu0.4(Mg,Fe)3(AsO4)3Mon. 2/m : B2/b
ParaberzeliiteNaCa2Mg2(AsO4)3Mon. 2/m : B2/b
VaruliteNaCaMn2+Mn2+2(PO4)3Mon. 2/m : B2/b
YazganiteNaFe3+2(Mg,Mn2+)(AsO4)3 · H2OMon. 2/m : B2/b
ZhanghuifeniteNa3Mn4Mg2Al(PO4)6Mon. 2/m
ZincobradaczekiteNaZn2Cu2(AsO4)3Mon. 2/m : B2/b

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of O'Danielite associated with StranskiiteZn2Cu(AsO4)2

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.3.1AdamiteZn2(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
20.3.2ParadamiteZn2(AsO4)(OH)Tric. 1 : P1
20.3.3KoritnigiteZn(HAsO4) · H2OTric. 1 : P1
20.3.4LegranditeZn2(AsO4)(OH) · H2OMon. 2/m : P21/b
20.3.5WarikahniteZn3(AsO4)2 · 2H2OTric. 1 : P1
20.3.6KöttigiteZn3(AsO4)2 · 8H2OMon. 2/m : B2/m
20.3.7StranskiiteZn2Cu(AsO4)2Tric. 1 : P1
20.3.8Philipsburgite(Cu,Zn)6(AsO4,PO4)2(OH)6 · H2OMon.
20.3.9AustiniteCaZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
20.3.10ProsperiteCa2Zn4(AsO4)4 · H2OMon.
20.3.11GaititeCa2Zn(AsO4)2 · 2H2OTric. 1 : P1
20.3.12ZincroseliteCa2Zn(AsO4)2 · 2H2OMon.
20.3.14JohilleriteNa(Mg,Zn)3Cu(AsO4)3Mon. 2/m : B2/b
20.3.15Holdenite(Mn2+,Mg)6Zn3(AsO4)2(SiO4)(OH)8Orth. mmm (2/m 2/m 2/m) : Ccca
20.3.16Chudobaite(Mg,Zn)5(AsO4)2(HAsO4)2 · 10H2OTric.
20.3.17Chlorophoenicite(Mn,Mg)3Zn2(AsO4)(OH,O)6Mon. 2/m : B2/m
20.3.18LotharmeyeriteCa(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
20.3.19Metaköttigite(Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH)Tric. 1 : P1
20.3.20OjuelaiteZnFe3+2(AsO4)2(OH)2 · 4H2OMon.
20.3.21FahleiteCaZn5Fe3+2(AsO4)6 · 14H2OOrth.
20.3.22KeyiteCu2+3Zn4Cd2(AsO4)6 · 2H2OMon. 2/m

Fluorescence of O'DanieliteHide

Not fluorescent.

Other InformationHide

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 O'DanieliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Keller, P., Hess, H. (1980) Crystal structures of two new arsenate minerals from Tsumeb (abstr.). Fortschr Mineral., Beiheffe: 58: 68-69. (in German)
Keller, P., Hess, H., Dunn, P.J., Newbury, D. (1981) O'Danielite, NaZn3H2(AsO4)3, a new mineral from Tsumeb, Namibia. Neues Jahrbuch für Mineralogie, Monatshefte: 1981: 155-160.
Fleischer, M., Chao, G.Y., Francis, C.A., Pabst, A. (1981) New mineral names. American Mineralogist: 66: 217-220.
Fleischer, M., Cabri, L.J. (1981) New mineral names. American Mineralogist: 66: 1274-1280.
Keller P. and Hess, H. (1988) Die Kristallstrukturen von O'Danielit, Na(Zn,Mg)3H2(AsO4)3 und Johillerit, Na(Mg,Zn)3Cu(AsO4)3. Neues Jahrbuch fuer Mineralogie Monatshefte: 1988: 395-404. (in German)
Ðorðević, T., Wittwer, A., Krivovichev, S.V. (2015) Three new alluaudite-like protonated arsenates: NaMg3(AsO4)(AsO3OH)2, NaZn3(AsO4)(AsO3OH)2 and Na(Na0.6Zn0.4)Zn2(H0.6AsO4)(AsO3OH)2. European Journal of Mineralogy: 27(4): 559-573.
Anthony, J.W., Bideaux, R.A., Bladh, K.W. and Nichols, M.C., Eds. Handbook of Mineralogy, Mineralogical Society of America, Chantilly, VA 20151-1110, USA. (2016)

Internet Links for O'DanieliteHide

Localities for O'DanieliteHide

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.
Namibia (TL)
  • Oshikoto Region
    • Tsumeb
[Neues Jahrb.Min.,Mh.(1981) 155-160; Clark, 1993 - "Hey's Mineral Index"]
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