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Deloneite

A valid IMA mineral species

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Photos of Deloneite (2)

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Deloneite

Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

Deloneite, etc.

Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

Deloneite

Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

Deloneite, etc.

Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

Deloneite

Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

Deloneite, etc.

Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

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About DeloneiteHide

Boris N. Delone

Formula:

(Na_0.5REE_0.25Ca_0.25)(Ca_0.75REE_0.25)Sr_1.5(CaNa_0.25REE_0.25)(PO₄)₃F_0.5(OH)_0.5

Colour:

Bright yellow

Lustre:

Vitreous

Hardness:

Specific Gravity:

3.92

Crystal System:

Trigonal

Member of:

Belovite Group > Apatite Supergroup

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. Originally named deloneite-(Ce). Renamed to deloneite by the IMA in 2010 because the REE does not exist at any sites in higher proportions than other cations.

Type Locality:

ⓘ Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

This page provides mineralogical data about Deloneite.

Unique IdentifiersHide

Mindat ID:

6900

Long-form identifier:

mindat:1:1:6900:3

GUID
(UUID V4):

2ae035d4-d604-48cf-bc7d-3c1d7f5d9d07

Classification of DeloneiteHide

IMA status:

Approved

IMA status notes:

Redefined by the IMA

First published:

1996

Type description reference:

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.

Strunz-mindat (2023):

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference
Dln	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of DeloneiteHide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

Bright yellow

Streak:

White

Hardness:

5 on Mohs scale

Fracture:

Step-Like

Density:

3.92(5) g/cm³ (Measured) 3.95 g/cm³ (Calculated)

Optical Data of DeloneiteHide

Type:

Uniaxial (-)

RI values:

n_ω = 1.682(2) n_ε = 1.660(2)

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:

(Na_0.5REE_0.25Ca_0.25)(Ca_0.75REE_0.25)Sr_1.5(CaNa_0.25REE_0.25)(PO₄)₃F_0.5(OH)_0.5

Elements listed:

Ca, F, H, Na, O, P, Sr - search for minerals with similar chemistry

Crystallography of DeloneiteHide

Crystal System:

Trigonal

Class (H-M):

3 - Pyramidal

Space Group:

Cell Parameters:

a = 9.51(1) Å, c = 7.01(1) Å

Ratio:

a:c = 1 : 0.737

Unit Cell V:

549.05 Å³ (Calculated from Unit Cell)

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0012350	Deloneite	Rastsvetaeva R K, Khomyakov A P (1996) Structural features of a new naturally occurring representative of the fluorapatite-deloneite series Crystallography Reports 41 789-792		1996	Khibini alkaline massif, Kola Peninsula, Russia	0	293
0012491	Deloneite	Rastsvetaeva R F, Khomyakov A P (1996) Crystal structure of deloneite-(Ce), high ordered Ca analogue of belovite Doklady Akademii Nauk SSSR 349 354-357		1996		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Deloneite'
loop_
_publ_author_name
'Rastsvetaeva R K'
'Khomyakov A P'
_journal_name_full 'Crystallography Reports'
_journal_volume 41 
_journal_year 1996
_journal_page_first 789
_journal_page_last 792
_publ_section_title
;
 Structural features of a new naturally occurring representative
 of the fluorapatite-deloneite series
;
_database_code_amcsd 0012350
_chemical_compound_source 'Khibini alkaline massif, Kola Peninsula, Russia'
_chemical_formula_sum 'Ca3.3 Sr1.1 Na.3 Ce.3 P3 O12.333 (F.667 H.333)'
_cell_length_a 9.485
_cell_length_b 9.485
_cell_length_c 7.000
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 545.385
_exptl_crystal_density_diffrn      3.537
_symmetry_space_group_name_H-M 'P 63'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x-y,x,1/2+z'
  '-y,x-y,z'
  '-x,-y,1/2+z'
  '-x+y,-x,z'
  'y,-x+y,1/2+z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
CaA1   0.33333   0.66667  -0.00420   0.20000   0.01077
SrA1   0.33333   0.66667  -0.00420   0.50000   0.01077
NaA1   0.33333   0.66667  -0.00420   0.30000   0.01077
CaA2   0.33333   0.66667   0.49870   1.00000   0.01140
CaA3   0.01280   0.25190   0.24960   0.70000   0.00874
SrA3   0.01280   0.25190   0.24960   0.20000   0.00874
CeA3   0.01280   0.25190   0.24960   0.10000   0.00874
P   0.63050   0.02900   0.24480   1.00000   0.00557
O1   0.32400   0.25400   0.42000   1.00000   0.02153
O2   0.15600   0.67100   0.24400   1.00000   0.01646
O3   0.53600   0.12100   0.26300   1.00000   0.01520
O4   0.35500   0.26300   0.06800   1.00000   0.01267
F   0.00000   0.00000   0.27600   0.66667   0.03546
O-H   0.00000   0.00000   0.27600   0.33333   0.03546

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.84 Å	(100 broad)
3.12 Å	(40)
2.753 Å	(40)
3.51 Å	(30)
1.967 Å	(30)
1.870 Å	(30)
2.288 Å	(20)

Comments:

Mt. Koashva, Kola Peninsula, Russia. The data are from the type description.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 4b: Highly evolved igneous rocks	>3.0
36 : Carbonatites, kimberlites, and related igneous rocks

Type Occurrence of DeloneiteHide

Type Locality:

ⓘ Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

General Appearance of Type Material:

Intimate intergrowths with belovite and another mineral. Grains 0.05-0.5 mm and rarely up to 1.0-1.5 mm in size.

Place of Conservation of Type Material:

A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia.

Geological Setting of Type Material:

Hyperagpaitic pegmatite.

Associated Minerals at Type Locality:

Belovite-(Ce)

Reference:

Download:

https://rruff.info/rruff_1.0/uploads/ZVMO125N5_83.pdf

Synonyms of DeloneiteHide

Deloneite-(Ce)

IMA1995-036

Other Language Names for DeloneiteHide

Russian:Делонеит-(Ce)

Relationship of Deloneite to other SpeciesHide

Member of:

Belovite Group > Apatite Supergroup

Other Members of this group:

Belovite-(Ce)	NaCeSr₃(PO₄)₃F	Trig. 3 : P3
Belovite-(La)	NaLaSr₃(PO₄)₃F	Trig. 3 : P3
Carlgieseckeite-(Nd)	NaNdCa₃(PO₄)₃F	Trig. 3 : P3
Fluorcaphite	SrCaCa₃(PO₄)₃F	Hex. 6/m : P6₃/m
Fluorstrophite	SrCaSr₃(PO₄)₃F	Hex. 6/m : P6₃/m
Kuannersuite-(Ce)	NaCeBa₃(PO₄)₃F_0.5Cl_0.5	Trig. 3 : P3

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Deloneite associated with Sitinakite	KNa₂Ti₄(SiO₄)₂O₅(OH) · 4H₂O
1 photo of Deloneite associated with Natrolite	Na₂Al₂Si₃O₁₀ · 2H₂O

Related Minerals - Strunz-mindat Grouping Hide

8.BN.	Aradite	BaCa₆[(SiO₄)(VO₄)](VO₄)₂F	Trig. 3m : R3m
8.BN.	Magganasite	CuFe³⁺₃O(AsO₄)₃	Tric. 1 : P1
8.BN.	Fluorpyromorphite	Pb₅(PO₄)₃F	Hex. 6/m : P6₃/m
8.BN.	Fluorsigaiite	Ca₂Sr₃(PO₄)₃F	Hex. 6/m : P6₃/m
8.BN.	Fluoralforsite	Ba₅(PO₄)₃F	Hex. 6/m : P6/m
8.BN.05	Alforsite	Ba₅(PO₄)₃Cl	Hex. 6/m : P6₃/m
8.BN.05	Belovite-(Ce)	NaCeSr₃(PO₄)₃F	Trig. 3 : P3
8.BN.05	Chlorapatite	Ca₅(PO₄)₃Cl	Hex. 6/m : P6₃/m
8.BN.05	Mimetite-M	Pb₅(AsO₄)₃Cl	Mon. 2/m : P2₁/b
8.BN.05	Johnbaumite-M	Ca₅(AsO₄)₃OH	Mon. 2/m : P2₁/m
8.BN.05	Fluorapatite	Ca₅(PO₄)₃F	Hex. 6/m : P6₃/m
8.BN.05	Hedyphane	Ca₂Pb₃(AsO₄)₃Cl	Hex. 6/mmm (6/m 2/m 2/m) : P6₃/mmc
8.BN.05	Hydroxylapatite	Ca₅(PO₄)₃(OH)	Hex. 6/m : P6₃/m
8.BN.05	Johnbaumite	Ca₅(AsO₄)₃(OH)	Hex. 6/m : P6₃/m
8.BN.05	Mimetite	Pb₅(AsO₄)₃Cl	Hex. 6/m : P6₃/m
8.BN.05	Morelandite	Ca₂Ba₃(AsO₄)₃Cl	Hex.
8.BN.05	Oxypyromorphite	Pb₁₀(PO₄)₆O
8.BN.05	Pyromorphite	Pb₅(PO₄)₃Cl	Hex. 6/m : P6₃/m
8.BN.05	Fluorstrophite	SrCaSr₃(PO₄)₃F	Hex. 6/m : P6₃/m
8.BN.05	Svabite	Ca₅(AsO₄)₃F	Hex. 6/mmm (6/m 2/m 2/m) : P6₃/mmc
8.BN.05	Turneaureite	Ca₅(AsO₄)₃Cl	Hex. 6/m : P6₃/m
8.BN.05	Vanadinite	Pb₅(VO₄)₃Cl	Hex. 6/m : P6₃/m
8.BN.05	Belovite-(La)	NaLaSr₃(PO₄)₃F	Trig. 3 : P3
8.BN.05	Fluorcaphite	SrCaCa₃(PO₄)₃F	Hex. 6/m : P6₃/m
8.BN.05 va	Germanate-pyromorphite	Pb₅(PO₄)₂GeO₄
8.BN.05	Kuannersuite-(Ce)	NaCeBa₃(PO₄)₃F_0.5Cl_0.5	Trig. 3 : P3
8.BN.05	Hydroxylapatite-M	Ca₅(PO₄)₃OH	Mon. 2/m : P2₁/b
8.BN.05	Phosphohedyphane	Ca₂Pb₃(PO₄)₃Cl	Hex. 6/m : P6₃/m
8.BN.05	Hydroxylpyromorphite	Pb₅(PO₄)₃(OH)	Hex. 6/mmm (6/m 2/m 2/m) : P6₃/mcm
8.BN.05	Stronadelphite	Sr₅(PO₄)₃F	Hex. 6/m : P6₃/m
8.BN.05	Fluorphosphohedyphane	Ca₂Pb₃(PO₄)₃F	Hex. 6/m : P6₃/m
8.BN.05	Carlgieseckeite-(Nd)	NaNdCa₃(PO₄)₃F	Trig. 3 : P3
8.BN.05	Vanackerite	Pb₄Cd(AsO₄)₃Cl	Trig. 3 : P3
8.BN.05	Miyahisaite	(Sr,Ca)₂Ba₃(PO₄)₃F	Hex. 6/m : P6₃/m
8.BN.05	Unnamed (OH-analogue of Mimetite)	Pb₅(AsO₄)₃(OH)	Hex. 6/m : P6₃/m
8.BN.05	Pieczkaite	Mn₅(PO₄)₃Cl	Hex. 6/m : P6₃/m
8.BN.05	Hydroxylhedyphane	Ca₂Pb₃(AsO₄)₃(OH)	Trig. 3 : P3
8.BN.05	Pliniusite	Ca₅(VO₄)₃F	Hex. 6/m : P6₃/m
8.BN.05	Parafiniukite	Ca₂Mn₃(PO₄)₃Cl	Hex. 6/m : P6₃/m
8.BN.10	Arctite	Na₂Ca₄(PO₄)₃F	Trig. 3m (3 2/m) : R3m
8.BN.15	Goryainovite	Ca₂(PO₄)Cl	Orth. mmm (2/m 2/m 2/m) : Pbcm

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.

Internet Links for DeloneiteHide

mindat.org URL:

https://www.mindat.org/min-6900.html
Please feel free to link to this page.

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External Links:

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for DeloneiteHide

Reference List:

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.

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

Russia (TL)

Murmansk Oblast

Khibiny Massif

Koashva Mt

ⓘ Koashva Open Pit (TL)

Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp.

Deloneite

About DeloneiteHide

Unique IdentifiersHide

Classification of DeloneiteHide

Mineral SymbolsHide

Physical Properties of DeloneiteHide

Optical Data of DeloneiteHide

Chemical Properties of DeloneiteHide

Crystallography of DeloneiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of DeloneiteHide

Synonyms of DeloneiteHide

Other Language Names for DeloneiteHide

Relationship of Deloneite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for DeloneiteHide

References for DeloneiteHide

Localities for DeloneiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide