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Arctite

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Vuonnemiok River Valley, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© 2007, JGW




Formula:
Na
 
2
Ca
 
4
(PO
 
4
)
 
3
F
System:TrigonalColour:Colorless:
Lustre:Vitreous, Sub-Vitreous, PearlyHardness:5
Name:Named in 1981 by Alexander Petrovich Khomyyakov, A. V. Bykova, and T. A. Kurova for the type locality's area, the Arctic region of Russia.
This page provides mineralogical data about Arctite.

Classification of Arctite

IMA status:Approved
Strunz 8th edition ID:7/B.21-20
Nickel-Strunz 10th (pending) edition ID:8.BN.10

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
N : With only large cations, (OH, etc.):RO4 = 0.33:1
Dana 8th edition ID:41.5.18.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
Hey's CIM Ref.:22.1.6

22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride
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Type Occurrence of Arctite

Type Locality:Vuonnemiok River Valley, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
General Appearance of Type Material:Colorless to white masses and rare crystals.
Year of Discovery:1981
Geological Setting of type material:Alkaline massif
Associated Minerals at type locality:
AegirineKostyleviteNatisiteNatrosiliteParaumbite
RasvumiteThenarditeUmbiteVilliaumiteVuonnemite
WadeiteZirsinalite

Physical Properties of Arctite

Lustre:Vitreous, Sub-Vitreous, Pearly
Diaphaneity (Transparency):Transparent, Translucent
Colour:Colorless:
Streak:Colorless
Hardness (Mohs):5
Tenacity:Brittle
Cleavage:Perfect
{0001}
Density (measured):3.13 g/cm3
Density (calculated):3.19 g/cm3

Crystallography of Arctite

Crystal System:Trigonal
Class (H-M):3m (3 2/m) - Hexagonal Scalenohedral
Space Group:R3m {R3 2/m}
Space Group Setting:R3m
Cell Parameters:a = 7.078Å, c = 41.203Å
Ratio:a:c = 1 : 5.821
Unit Cell Volume:V 1,787.64 ų (Calculated from Unit Cell)
Z:6
X-Ray Powder Diffraction:
d-spacingIntensity
13.80 (25)
3.54 (21)
3.43 (32)
3.06 (25)
2.804 (25)
2.746 (100)
2.719 (21)
1.769 (20)
Comments:ICDD 33-1228

Optical Data of Arctite

Type:Uniaxial (-)
RI values: nω = 1.578 nε = 1.577
Birefringence:0.001
Maximum Birefringence:δ = 0.001

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Pleochroism:Non-pleochroic
Comments:Anomalously biaxial

Chemical Properties of Arctite

Formula:
Na
 
2
Ca
 
4
(PO
 
4
)
 
3
F
Essential elements:Ca, F, Na, O, P
All elements listed in formula:Ca, F, Na, O, P

Relationship of Arctite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.BN.05Alforsite
Ba
 
5
(PO
 
4
)
 
3
Cl
8.BN.05Belovite-(Ce)
NaCeSr
 
3
(PO
 
4
)
 
3
F
8.BN.05Carbonate-rich Fluorapatite
Ca
 
5
(PO
 
4
,CO
 
3
)
 
3
(F,O)
8.BN.05Carbonate-rich Hydroxylapatite
Ca
 
5
(PO
 
4
,CO
 
3
)
 
3
(OH,O)
8.BN.05Chlorapatite
Ca
 
5
(PO
 
4
)
 
3
Cl
8.BN.05Mimetite-M
Pb
 
5
(AsO
 
4
)
 
3
Cl
8.BN.05Johnbaumite-M
Ca
 
5
(AsO
 
4
)
 
3
OH
8.BN.05Fluorapatite
Ca
 
5
(PO
 
4
)
 
3
F
8.BN.05Hedyphane
Pb
 
3
Ca
 
2
(AsO
 
4
)
 
3
Cl
8.BN.05Hydroxylapatite
Ca
 
5
(PO
 
4
)
 
3
(OH)
8.BN.05Johnbaumite
Ca
 
5
(AsO
 
4
)
 
3
OH
8.BN.05Mimetite
Pb
 
5
(AsO
 
4
)
 
3
Cl
8.BN.05Morelandite
Ca
 
2
Ba
 
3
(AsO
 
4
)
 
3
Cl
8.BN.05Pyromorphite
Pb
 
5
(PO
 
4
)
 
3
Cl
8.BN.05Fluorstrophite
SrCaSr
 
3
(PO
 
4
)
 
3
F
8.BN.05Svabite
Ca
 
5
(AsO
 
4
)
 
3
F
8.BN.05Turneaureite
Ca
 
5
(AsO
 
4
)
 
3
Cl
8.BN.05Vanadinite
Pb
 
5
(VO
 
4
)
 
3
Cl
8.BN.05Belovite-(La)
NaLaSr
 
3
(PO
 
4
)
 
3
F
8.BN.05Deloneite
(Na
 
0.5
REE
 
0.25
Ca
 
0.25
)(Ca
 
0.75
REE
 
0.25
)Sr
 
1.5
(CaNa
 
0.25
REE
 
0.25
)(PO
 
4
)
 
3
F
 
0.5
(OH)
 
0.5
8.BN.05Fluorcaphite
SrCaCa
 
3
(PO
 
4
)
 
3
F
8.BN.05Kuannersuite-(Ce)
NaCeBa
 
3
(PO
 
4
)
 
3
F
 
0.5
Cl
 
0.5
8.BN.05Hydroxylapatite-M
Ca
 
5
(PO
 
4
)
 
3
OH
8.BN.05Phosphohedyphane
Ca
 
2
Pb
 
3
(PO
 
4
)
 
3
Cl
8.BN.05Stronadelphite
Sr
 
5
(PO
 
4
)
 
3
F
8.BN.05Fluorphosphohedyphane
Ca
 
2
Pb
 
3
(PO
 
4
)
 
3
F
8.BN.05Miyahisaite
(Sr,Ca)
 
2
Ba
 
3
(PO
 
4
)
 
3
F
Related Minerals - Hey's Index Grouping:

- +
22.1.1Amblygonite
LiAl(PO
 
4
)F
22.1.2Lacroixite
NaAl(PO
 
4
)F
22.1.3Natrophosphate
Na
 
7
(PO
 
4
)
 
2
F · 19H
 
2
O
22.1.5Nacaphite
Na
 
2
Ca(PO
 
4
)F
22.1.7Nefedovite
Na
 
5
Ca
 
4
(PO
 
4
)
 
4
F
22.1.9Fluorapatite
Ca
 
5
(PO
 
4
)
 
3
F
22.1.10Herderite
CaBePO
 
4
(F,OH)
22.1.11Isokite
CaMg(PO
 
4
)F
22.1.12Panasqueiraite
CaMg(PO
 
4
)(OH,F)
22.1.13Babefphite
BaBePO
 
4
(F,OH)
22.1.14Fluellite
Al
 
2
(PO
 
4
)(OH)F
 
2
 · 7H
 
2
O
22.1.15Minyulite
KAl
 
2
(PO
 
4
)
 
2
(OH,F) · 4H
 
2
O
22.1.16Morinite
NaCa
 
2
Al
 
2
(PO
 
4
)
 
2
(OH)F
 
4
 · 2H
 
2
O
22.1.17Bøggildite
Na
 
2
Sr
 
2
Al
 
2
PO
 
4
F
 
9
22.1.18Fluorstrophite
SrCaSr
 
3
(PO
 
4
)
 
3
F
22.1.19Viitaniemiite
Na(Ca,Mn
2+
 
)Al(PO
 
4
)(F,OH)
 
3
22.1.20Väyrynenite
Mn
2+
 
Be(PO
 
4
)(OH,F)
22.1.21Maxwellite
NaFe
3+
 
(AsO
 
4
)F
22.1.22Wagnerite
(Mg,Fe
2+
 
)
 
2
(PO
 
4
)F
22.1.23Triplite
(Mn
2+
 
,Fe
2+
 
)
 
2
(PO
 
4
)(F,OH)
22.1.24Magniotriplite
(Mg,Fe
2+
 
,Mn
2+
 
)
 
2
PO
 
4
F
22.1.25Zwieselite
(Fe
2+
 
,Mn
2+
 
)
 
2
(PO
 
4
)F
22.1.26Mcauslanite
HFe
2+
3
Al
 
2
(PO
 
4
)
 
4
F · 18H
 
2
O
22.1.27Richellite
CaFe
3+
2
(PO
 
4
)
 
2
(OH,F)
 
2
22.1.28Svabite
Ca
 
5
(AsO
 
4
)
 
3
F
22.1.29Tilasite
CaMg(AsO
 
4
)F
22.1.30Johnbaumite-M
Ca
 
5
(AsO
 
4
)
 
3
OH
22.1.31Durangite
NaAl(AsO
 
4
)F

Other Names for Arctite

Synonyms:
ArktiztIMA1980-049
Other Languages:
German:Arctit
Arkticit
Russian:Арктит
Spanish:Arctita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Arctite

Reference List:

- +
Khomyakov, A. P., Bykova, A. V. & Kurova, T. A. (1981): Arctite [Na2Ca4(PO4)3F] - a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 110, 506-508.

American Mineralogist: 67: 621.

Doklady Akademii Nauk SSSR: 274: 78-83.

Internet Links for Arctite

Search Engines:
  • Look for Arctite on Google
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    • External Links:
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  • Look for Arctite on Wikipedia
  • Look for Arctite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Arctite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Wilensky Fine Minerals
  • rare and unusual minerals mainly crystallized
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  • Fabre Minerals - search for Arctite specimens
  • Arctite specimens for sale - minfind.com
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    • Localities for Arctite

    The 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.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    		[World of Stones 95:5-6, p64]
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    www.koeln.netsurf.de/~w.steffens/lovo.htm
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