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Dorfmanite

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About DorfmaniteHide

Formula:
Na2HPO4 · 2H2O
Colour:
White
Hardness:
1 - 1½
Crystal System:
Orthorhombic
Name:
Named by Y.L. Kapustin, Z.V. Pudovkina, and T.E. Bykova in 1980 in honor of Moisei Davidovich Dorfman (1908 - ), Russian mineralogist at the A.E. Fersman Mineralogical Museum, Moscow, Russia. He was an investigator of Khibiny minerals and first reported a sodium phosphate in 1963.
This page provides mineralogical data about Dorfmanite.


Classification of DorfmaniteHide

Approved
Approval Year:
1979
First Published:
1980
8.CJ.60

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
J : With only large cations
39.1.8.1

39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
1 : A[HXO4]·xH2O
19.1.4

19 : Phosphates
1 : Phosphates of the alkali metals

Physical Properties of DorfmaniteHide

Colour:
White
Hardness:
1 - 1½ on Mohs scale

Optical Data of DorfmaniteHide

Type:
Biaxial (+)
RI values:
nα = 1.454 nβ = 1.461 nγ = 1.471
2V:
Measured: 65° , Calculated: 82°
Max Birefringence:
δ = 0.017
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
very weak

Chemical Properties of DorfmaniteHide

Formula:
Na2HPO4 · 2H2O
IMA Formula:
Na2(PO3OH) · 2H2O

Crystallography of DorfmaniteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 10.34 Å, b = 16.82 Å, c = 6.6 Å
Ratio:
a:b:c = 0.615 : 1 : 0.392
Unit Cell V:
1,147.86 ų (Calculated from Unit Cell)

Type Occurrence of DorfmaniteHide

Synonyms of DorfmaniteHide

Other Language Names for DorfmaniteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Ussingite2 photos of Dorfmanite associated with Ussingite on mindat.org.
Lithiophosphate2 photos of Dorfmanite associated with Lithiophosphate on mindat.org.
Apatite1 photo of Dorfmanite associated with Apatite on mindat.org.
Rhodochrosite1 photo of Dorfmanite associated with Rhodochrosite on mindat.org.
Cosalite1 photo of Dorfmanite associated with Cosalite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.CJ.CaesiumpharmacosideriteCsFe4[(AsO4)3(OH)4]·4H2OIso. 4 3m : P4 3m
8.CJ.05StercoriteNa(NH4)HPO4 · 4H2OTric.
8.CJ.10Mundrabillaite(NH4)2Ca(HPO4)2 · H2OMon. m : Pm
8.CJ.10Swaknoite(NH4)2Ca(HPO4)2 · H2OOrth.
8.CJ.15NabaphiteNaBaPO4 · 9H2OIso.
8.CJ.15NastrophiteNa(Sr,Ba)PO4 · 9H2O
8.CJ.20HaidingeriteCaHAsO4 · H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
8.CJ.25VladimiriteCa4(AsO4)2(AsO3OH) · 4H2OMon. 2/m : P21/b
8.CJ.30FerrarisiteCa5(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CJ.35Machatschkiite(Ca,Na)6(AsO4)(HAsO4)3(PO4,SO4) · 15H2OHex.
8.CJ.40PhaunouxiteCa3(AsO4)2 · 11H2OTric.
8.CJ.40RauenthaliteCa3(AsO4)2 · 10H2OTric. 1 : P1
8.CJ.45Brockite(Ca,Th,Ce)PO4 · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Grayite(Th,Pb,Ca)(PO4) · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Rhabdophane-(Ce)Ce(PO4) · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Rhabdophane-(La)La(PO4) · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Rhabdophane-(Nd)Nd(PO4) · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Tristramite(Ca,U,Fe)(PO4,SO4) · 2H2OHex.
8.CJ.45Smirnovskite(Th,Ca)PO4 · nH2OHex. 6 2 2 : P62 2 2
8.CJ.50ArdealiteCa2(HPO4)(SO4) · 4H2OMon. m : Bb
8.CJ.50BrushiteCa(HPO4) · 2H2OMon. m : Bb
8.CJ.50Churchite-(Y)Y(PO4) · 2H2OMon. 2/m : B2/b
8.CJ.50PharmacoliteCa(HAsO4) · 2H2OMon. m
8.CJ.50Churchite-(Nd)Nd(PO4) · 2H2OMon.
8.CJ.55McneariteNaCa5(AsO4)(HAsO4)4 · 4H2OTric.
8.CJ.65SincositeCa(VO)2(PO4)2 · 5H2OTet. 4/mmm (4/m 2/m 2/m) : P42/nnm
8.CJ.65BariosincositeBa(VO)2(PO4)2 · 4H2OTet.
8.CJ.70CatalanoiteNa2(HPO4) · 8H2OOrth. mmm (2/m 2/m 2/m) : Ibca
8.CJ.75GuériniteCa5(AsO4)2(HAsO4)2 · 9H2OMon. 2/m : P21/b
8.CJ.85NingyoiteCaU(PO4)2 · 1-2H2OOrth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.1.1LithiophosphateLi3PO4Orth. mm2 : Pmn21
19.1.2OlympiteNa5Li(PO4)2Orth.
19.1.3NahpoiteNa2HPO4Mon. 2/m : P21/m
19.1.5NalipoiteNaLi2PO4Orth.
19.1.6StercoriteNa(NH4)HPO4 · 4H2OTric.
19.1.7Archerite(K,NH4)(H2PO4)Tet. 4 2m : I4 2d
19.1.8Biphosphammite(NH4,K)(H2PO4)Tet. 4 2 2 : I41 2 2
19.1.9Phosphammite(NH4)2(HPO4)Mon. 2/m : P21/b
19.1.10LithiophiliteLiMn2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna
19.1.11SickleriteLi1-x(Mn3+xMn2+1-x)PO4Orth.
19.1.12FerrisickleriteLi1-x(Fe3+xFe2+1-x)PO4Orth.
19.1.13TriphyliteLiFe2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna
19.1.14TavoriteLiFe3+(PO4)(OH)Tric. 1 : P1
19.1.15MarićiteNaFe2+(PO4)Orth. mmm (2/m 2/m 2/m) : Pmna

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 DorfmaniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Catti, M., Ferraris, G., Franchini-Angela, M. (1977) The crystal structure of Na2HPO4·2H2O. Competition between coordination and hydrogen bonds. Acta Crystallographica: B33: 3449-3452.
Kapustin, Y.L., Pudovkina, Z.V., Bykova, T.E. (1980) Dorfmanite, a new mineral. Zapiski Vsesoyuznogo (Vserossiyskogo) Mineralogicheskogo Obshchestva: 109(2): 211-216. (in Russian)
Fleischer, M., Chao, G.Y., Francis, C.A., Pabst, A. (1981) New mineral names. American Mineralogist: 66: 217-220.

Internet Links for DorfmaniteHide

Localities for DorfmaniteHide

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.
Austria
 
  • Burgenland
    • Neusiedl am See
      • Seewinkel
A.Csaplovics (2014)
Canada
 
  • Manitoba
    • Lac-du-Bonnet area
      • Bernic Lake
Can. Rockhound. 4(1), 2000.
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Horváth, L and Gault, R.A. (1990), The mineralogy of Mont Saint-Hilaire Quebec. Mineralogical Record: 21: 284-359.
  • Yukon
    • Dawson mining district
[Mineralogical Record Vol 23 No.4 pp 38]
Denmark
 
  • Greenland
    • Kujalleq
      • Narsaq
Petersen, O.V. (2001): List of all minerals identified in the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin. 190, 25-33
          • Kuannersuit Plateau (Kvanefjeld)
            • Kvanefjeld Uranium deposit
Petersen, O., Khomyakov, A., Soerensen, H. (2001): Natrophosphate from the Ilimaussaq alkaline complex South Greenland, South Greenland, Geology of Greenland Survey Bulletin, 190, 139-141
Russia (TL)
 
  • Northern Region
    • Murmanskaya Oblast'
      • Khibiny Massif
        • Koashva Mt
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
        • Yukspor Mt
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Kapustin, Y. L., Pudovkina, Z. V., & Bykova, T. Y. (1982). Dorfmanite, a new mineral. International Geology Review, 24(1), 111-115.
      • Lovozero Massif
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Richard Dale Collection, prior Mindat photos
Mineral and/or Locality  
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