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Deloneite

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Boris N. Delone
Formula:
(Na0.5REE0.25Ca0.25)(Ca0.75REE0.25)Sr1.5(CaNa0.25REE0.25)(PO4)3F0.5(OH)0.5
Colour:
Bright yellow
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
3.92(5)
Crystal System:
Trigonal
Name:
Named in 1996 by Alexander Petrovich Khomyakov, D.V. Lisitin, I.M. Kulikova, and R.K. Rastsvetaeva in honor of Boris Nikolaevich Delone (Delaunay) (15 March 1890, Saint Petersburg, Russian Empire - 17 July 1980, Moscow, Soviet Union), mathematical crystallographer and mountain climber.
This page provides mineralogical data about Deloneite.


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Classification of DeloneiteHide

Approved
First Published:
1996
8.BN.05

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
N : With only large cations, (OH, etc.):RO4 = 0.33:1

Physical Properties of DeloneiteHide

Vitreous
Transparency:
Transparent
Colour:
Bright yellow
Streak:
White
Hardness:
Fracture:
Step-Like
Density:
3.92(5) g/cm3 (Measured)    3.95 g/cm3 (Calculated)

Optical Data of DeloneiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.682 nε = 1.660
Max Birefringence:
δ = 0.022
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High

Chemical Properties of DeloneiteHide

Formula:
(Na0.5REE0.25Ca0.25)(Ca0.75REE0.25)Sr1.5(CaNa0.25REE0.25)(PO4)3F0.5(OH)0.5

Crystallography of DeloneiteHide

Crystal System:
Trigonal

Type Occurrence of DeloneiteHide

Geological Setting of Type Material:
Hyperagpaitic pegmatite
Associated Minerals at Type Locality:

Synonyms of DeloneiteHide

Other Language Names for DeloneiteHide

Relationship of Deloneite to other SpeciesHide

Other Members of this group:
Belovite-(Ce)NaCeSr3(PO4)3FTrig. 3 : P3
Belovite-(La)NaLaSr3(PO4)3FTrig. 3 : P3
Carlgieseckeite-(Nd)NaNdCa3(PO4)3FTrig. 3 : P3
FluorcaphiteSrCaCa3(PO4)3FHex. 6/m : P63/m
FluorstrophiteSrCaSr3(PO4)3FHex. 6/m : P63/m
Kuannersuite-(Ce)NaCeBa3(PO4)3F0.5Cl0.5Trig. 3 : P3

Common AssociatesHide

Associated Minerals Based on Photo Data:
Sitinakite1 photo of Deloneite associated with Sitinakite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.BN.05AlforsiteBa5(PO4)3ClHex. 6/m : P63/m
8.BN.05Belovite-(Ce)NaCeSr3(PO4)3FTrig. 3 : P3
8.BN.05Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)Hex.
8.BN.05Carbonate-rich HydroxylapatiteCa5(PO4,CO3)3(OH,O)Hex.
8.BN.05ChlorapatiteCa5(PO4)3ClHex. 6/m : P63/m
8.BN.05Mimetite-MPb5(AsO4)3ClMon. 2/m : P21/b
8.BN.05Johnbaumite-MCa5(AsO4)3OHMon. 2/m : P21/m
8.BN.05FluorapatiteCa5(PO4)3FHex. 6/m : P63/m
8.BN.05HedyphaneCa2Pb3(AsO4)3ClHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
8.BN.05HydroxylapatiteCa5(PO4)3(OH)Hex. 6/m : P63/m
8.BN.05JohnbaumiteCa5(AsO4)3OHHex. 6/m : P63/m
8.BN.05MimetitePb5(AsO4)3ClHex. 6/m : P63/m
8.BN.05MorelanditeCa2Ba3(AsO4)3Cl
8.BN.05PyromorphitePb5(PO4)3ClHex. 6/m : P63/m
8.BN.05FluorstrophiteSrCaSr3(PO4)3FHex. 6/m : P63/m
8.BN.05SvabiteCa5(AsO4)3FHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
8.BN.05TurneaureiteCa5(AsO4)3ClHex.
8.BN.05VanadinitePb5(VO4)3ClHex. 6/m : P63/m
8.BN.05Belovite-(La)NaLaSr3(PO4)3FTrig. 3 : P3
8.BN.05FluorcaphiteSrCaCa3(PO4)3FHex. 6/m : P63/m
8.BN.05Kuannersuite-(Ce)NaCeBa3(PO4)3F0.5Cl0.5Trig. 3 : P3
8.BN.05Hydroxylapatite-MCa5(PO4)3OHMon. 2/m : P21/b
8.BN.05PhosphohedyphaneCa2Pb3(PO4)3ClHex. 6/m : P63/m
8.BN.05StronadelphiteSr5(PO4)3FHex. 6/m : P63/m
8.BN.05FluorphosphohedyphaneCa2Pb3(PO4)3FHex. 6/m : P63/m
8.BN.05Carlgieseckeite-(Nd)NaNdCa3(PO4)3FTrig. 3 : P3
8.BN.05Miyahisaite(Sr,Ca)2Ba3(PO4)3F Hex. 6/m : P63/m
8.BN.10ArctiteNa2Ca4(PO4)3FTrig. 3m (3 2/m) : R3m

Other InformationHide

Notes:
Readily soluble in 10% HCl or HNO3 at room temperature.
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 DeloneiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Khomyakov, A.P., Lisitsin, D.V., Kulikova, I.M., Rastsvetaeva, R.K. (1996) Deloneite-(Ce) NaCa2SrCe(PO4)3F – a new mineral with a belovite-like structure. Zapiski Vserossijskogo Mineralogicheskogo Obshchestva: 125(5): 83-94.
Rastsvetaeva, R.F., Khomyakov, A.P. (1996) Crystal structure of deloneite-(Ce), high ordered Ca analogue of belovite. Doklady Akademii Nauk: 349(3): 354-357.
Rastsvetaeva, R.K., Khomyakov, A.P. (1996) Structural features of a new naturally occurring representative of the fluoroapatite-deloneite series. Crystallography Reports: 41: 789-792.
Jambor, J.L., Grew, E.S., Roberts, A.C. (1997) New mineral names. American Mineralogist: 82, 820-823.
Mandarino, J.A. (1997) Abstracts of New Minerals Descriptions. Mineralogical Record: 28: 401-405.
Pasero, M., Kampf, A.R., Ferraris, C., Pekov, I.V., Rakovan, J.R., White, T.J. (2010) Nomenclature of the apatite supergroup minerals. European Journal of Mineralogy: 22: 163-179.

Internet Links for DeloneiteHide

Localities for DeloneiteHide

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.
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
Mineral and/or Locality  
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