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Leifite

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About LeifiteHide

01941460014947046875841.jpg
Leif Ericson
Formula:
(Na,H2O)Na6[Be2Al2(Al,Si)Si15O39]F2
Colour:
Colorless
Lustre:
Silky
Hardness:
6
Specific Gravity:
2.57
Crystal System:
Trigonal
Member of:
Name:
Named after Leif Ericson (Old Norse: Leifr Eiríksson) (ca. 970 – ca. 1020) who was a Norse explorer regarded as the first European to land in North America (excluding Greenland), nearly 500 years before Christopher Columbus.
Leifite Group.
The sodium analogue of Telyushenkoite and Eirikite.

Note on the formula: the minor water content is located on a specific site ("B" site), not on the Na site ("A" site).


Classification of LeifiteHide

Approved, 'Grandfathered' (first described prior to 1959)
9.EH.25

9 : SILICATES (Germanates)
E : Phyllosilicates
H : Transitional structures between phyllosilicate and other silicate units
78.7.10.1

78 : Unclassified Silicates
7 :
17.2.3

17 : Silicates Containing other Anions
2 : Silicates with fluoride

Physical Properties of LeifiteHide

Silky
Transparency:
Transparent, Translucent
Colour:
Colorless
Hardness:
Tenacity:
Brittle
Cleavage:
Distinct/Good
Distinct on {1010}
Fracture:
Irregular/Uneven, Splintery
Density:
2.57 g/cm3 (Measured)    2.59 g/cm3 (Calculated)

Optical Data of LeifiteHide

Type:
Uniaxial (+)
RI values:
nω = 1.511 - 1.518 nε = 1.522 - 1.522
Max Birefringence:
δ = 0.011
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of LeifiteHide

Formula:
(Na,H2O)Na6[Be2Al2(Al,Si)Si15O39]F2
IMA Formula:
Na7Be2(Si15Al3)O39(F,OH)2
Common Impurities:
Ti,Fe,Mn,Zn,Mg,K,H2O

Crystallography of LeifiteHide

Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
P3m1
Cell Parameters:
a = 14.352(2) Å, c = 4.852(3) Å
Ratio:
a:c = 1 : 0.338
Unit Cell V:
865.52 ų (Calculated from Unit Cell)
Z:
3
Morphology:
Hexagonal prisms, acicular, striated to 3cm.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0005040LeifiteArmstrong J A, Friis H, Lieb A, Finch A A, Weller M T (2010) Combined single-crystal X-ray and neutron powder diffraction structure analysis exemplified through full structure determinations of framework and layer beryllate minerals American Mineralogist 95 519-5262010Vesle Aroya, Langesundsfjord, Norway0293
0005762LeifiteSokolova E V, Huminicki D M C, Hawthorne F C, Agakhanov A A, Pautov L A, Grew E S (2002) The crystal chemistry of telyushenkoite and leifite, A Na6[Be2Al3Si15O39F2], A = Cs, Na The Canadian Mineralogist 40 183-19220020293
CIF Raw Data - click here to close

Geological EnvironmentHide

Geological Setting:
Alkalic rocks

Type Occurrence of LeifiteHide

Other Language Names for LeifiteHide

German:Leifit
Russian:Лейфит
Simplified Chinese:白针柱石
Spanish:Leifita
Traditional Chinese:白針柱石

Relationship of Leifite to other SpeciesHide

Member of:
Other Members of this group:
EirikiteKNa6Be2(Si15Al3)O39F2Trig. 3m (3 2/m) : P3m1
Telyushenkoite(Cs,Na,K)Na6[Be2Al3Si15O39]F2Trig. 3m (3 2/m) : P3 1m

Common AssociatesHide

Associated Minerals Based on Photo Data:
19 photos of Leifite associated with SeranditeNaMn2+2Si3O8(OH)
18 photos of Leifite associated with AlbiteNa(AlSi3O8)
17 photos of Leifite associated with RhodochrositeMnCO3
16 photos of Leifite associated with AegirineNaFe3+Si2O6
9 photos of Leifite associated with ElpiditeNa2ZrSi6O15 · 3H2O
5 photos of Leifite associated with PolylithioniteKLi2Al(Si4O10)(F,OH)2
4 photos of Leifite associated with TainioliteKLiMg2(Si4O10)F2
2 photos of Leifite associated with EirikiteKNa6Be2(Si15Al3)O39F2
2 photos of Leifite associated with SideriteFeCO3
1 photo of Leifite associated with Ancylite

Related Minerals - Nickel-Strunz GroupingHide

9.EH.05ManganoneptuniteNa2KLiMn2+2Ti2Si8O24Mon.
9.EH.05NeptuniteNa2KLiFe2+2Ti2Si8O24Mon. m : Bb
9.EH.05WatatsumiiteNa2KLi(Mn2+,Fe2+)2V4+2[Si8O24]Mon.
9.EH.05MagnesioneptuniteKNa2Li(Mg,Fe)2Ti2Si8O24Mon. 2/m : B2/b
9.EH.10GrumantiteNa(HSi2O5) · H2OOrth. mm2 : Fdd2
9.EH.15SarcoliteNa4Ca12Al8Si12O46(SiO4,PO4)(OH,H2O)4(CO3,Cl)Tet.
9.EH.20UssingiteNa2AlSi3O8OHTric. 1 : P1
9.EH.25Telyushenkoite(Cs,Na,K)Na6[Be2Al3Si15O39]F2Trig. 3m (3 2/m) : P3 1m
9.EH.25EirikiteKNa6Be2(Si15Al3)O39F2Trig. 3m (3 2/m) : P3m1
9.EH.30NafertisiteNa3Fe2+10Ti2(Si6O17)2O2(OH)6F(H2O)2Mon. 2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.2.1TopazAl2(SiO4)(F,OH)2Orth. mmm (2/m 2/m 2/m)
17.2.2PolylithioniteKLi2Al(Si4O10)(F,OH)2Mon. 2/m : B2/b
17.2.5Meliphanite(Ca,Na)2(Be,Al)[Si2O6(OH,F)]Tet. 4 : I4
17.2.6SarcoliteNa4Ca12Al8Si12O46(SiO4,PO4)(OH,H2O)4(CO3,Cl)Tet.
17.2.7GötzeniteNaCa6Ti(Si2O7)2OF3Tric. 1 : P1
17.2.8Kuliokite-(Y)Y4Al(SiO4)2(OH)2F5Tric. 1 : P1
17.2.9Zinnwaldite
17.2.10MagbasiteKBaFe3+Mg7Si8O22(OH)2F6Orth. mmm (2/m 2/m 2/m) : Cmma

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 LeifiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
BØGGILD, O.B. (1915): Leifit et nyt mineral fra Narsarsuk. Meddelelser om Grønland 51, 427-433. (in Danish) English abstract: Mineralogical Abstracts 1, (19) (1915) 123.
BØGGILD, O.B. (1920): Leifit, ein neues Mineral von Narsarsuk, Grönland. Zeitschrift für Krystallographie 55, 425-429 (in German).
BØGGILD, O.B. (1953): The Mineralogy of Greenland. C.A. Reitzels Forlag, Copenhagen, 439 p.
CODA, A., UNGARETTI, L. & DELLA GIUSTA, A. (1974): The crystal structure of leifite, Na6[Si16Al2(BeOH)2O39]·1.5H2O. Acta Crystallographica B30(2), 396-401.
HORVÁTH, L. & GAULT, R.A. (1990): The mineralogy of Mont Saint Hilaire. Mineralogical Record 21, 284-359.
PETERSEN, O.V., RØNSBO, J.G., LEONARDSEN, E.S., JOHNSEN, O. BOLLINGBERG, H. & ROSE HANSEN, J. (1994): Leifite from the Ilímaussaq alkaline complex, South Greenland. Neues Jahrbuch für Mineralogie, Monatshefte Jg. 1993, 254-258.
LARSEN, A.O. & ÅSHEIM, A. (1995): Leifite* from a nepheline syenite pegmatite on Vesle Arøya in the Langesundsjord District, Oslo Region, Norway. Norsk Geologisk Tidsskift 75, 243-246. [* this turned out to be the type eirikite]
HOCHLEITNER, R., WEISS, S. & HORVÁTH, L. (2000): Steckbrief: Leifit. Lapis 25(7/8), 9-11 (in German).
SOKOLOVA, E., HUMINICKI, D.M.C., HAWTHORNE, F.C., AGAKHANOV, A.A., PAUTOV, L.A. & GREW, E.S. (2002): The crystal chemisty of telyushenkoite and leifite, ANa6[Be2Al3Si15O39F2], A = Cs, Na. Canadian Mineralogist 40, 183-192.
YAKOVENCHUK, V.N., IVANYUK, G.YU., PAKHOMOVSKY, YA.A. & MEN’SHIKOV, YU.P. (2005): Khibiny. Published by Laplandia Minerals, Apatity. 255.
American Mineralogist (1972): 57: 1006.

Internet Links for LeifiteHide

Localities for LeifiteHide

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.
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
GRICE, J.D. (1989) Mont Saint-Hilaire, Quebec: Canada's Most Diverse Mineral Locality. In: Famous mineral localities of Canada. Published by Fitzhenry & Whiteside Limited & the National Museum of Natural Sciences, 190 pages: 100-108; 166-175.; HORVÁTH, L., GAULT, R.A. (1990) The mineralogy of Mont Saint-Hilaire. Mineralogical Record, 21, 281-359.
Canadian Mineralogist Vol. 34, pp.349-371 (1996); A. Kerr and H. Rafuse (2012) Rare-earth element (REE) geochemistry of the Strange Lake deposits: Implications for resource estimation and metallogenic models. Newfoundland and Labrador Department of Natural Resources Current Research 2012 pp39-60; BIRKETT, T.C., MILLER, R.R., ROBERTS, A.C., & MARIANO, A.N. (1992) Zirconium bearing minerals from the Strange Lake intrusive complex, Quebec Labrador. Canadian Mineralogist, 30, 191-205.
Greenland (TL)
 
  • Kujalleq
    • Igaliku
      • Narsaarsuk Plateau
Bøggild, O. B. (1915) Leifit, et nyt mineral fra Narsarsuk. Meddelelser om Grønland 51: 429-433; Petersen, O.V., Rønsbo, J.G., Leonardsen, E.S, Johnsen, O, Bollingberg, H. & Rose-Hansen, J. (1994): Leifite from the Ilímaussaq alkaline complex, South Greenland. Contribution to the mineralogy of Ilímaussaq, no. 90. Neues Jahrbuch für Mineralogie, Monatshefte, 1994 (2): 83-90
    • 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
        • Tunulliarfik Fjord
Petersen, O.V., Rønsbo, J.G., Leonardsen, E.S, Johnsen, O, Bollingberg, H. & Rose-Hansen, J. (1994): Leifite from the Ilímaussaq alkaline complex, South Greenland. Contribution to the mineralogy of Ilímaussaq, no. 90. Neues Jahrbuch für Mineralogie, Monatshefte, 1994 (2), 83-90
Norway
 
  • Vestfold
    • Larvik
      • Langesundsfjorden
        • Vesle Arøya
Engvoldsen, T., Andersen, F., Berge, S. A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18 (1), 15-71; Larsen, A. O. & Åsheim, A. (1995) Leifite from a nepheline syenite pegmatite on Vesle Arøya in the Langesundsfjord district, Oslo Region , Norway. Norsk Geologisk Tidsskrift. 75: 243-246
Russia
 
  • Murmansk Oblast
    • Khibiny Massif
[World of Stones 95:5-6, p64]
        • Astrophyllite Stream
Pekov et al (2005) New Data on Minerals Vol 40 pp11-16
Arzamastsev, A., Yakovenchuk, V., Pakhomovsky, Y., & Ivanyuk, G. (2008). The Khibina and Lovozero alkaline massifs: Geology and unique mineralization. In Guidbook for 33rd International Geological Congress Excursion (No. 47, p. 58).
Pekov, I.V. & Podlesnyi, A.S. (2004): Kukisvumchorr Deposit: Mineralogy of Alkaline Pegmatites and Hydrotermalites. Mineralogical Almanac, vol. 7, 140 pages + xxiv photo's pages
    • Lovozersky District
      • Alluaiv Mt
        • Umbozero mine (Umbozerskii mine; Umba Mine)
Pekov, I.V. (2000): Lovozero Massif. Moscow, Ocean Pictures Ltd, 480 pp.
[World of Stones 95:5-6, p64]; Arzamastsev, A., Yakovenchuk, V., Pakhomovsky, Y., & Ivanyuk, G. (2008). The Khibina and Lovozero alkaline massifs: Geology and unique mineralization. In Guidbook for 33rd International Geological Congress Excursion (No. 47, p. 58).
P.M. Kartashov data; New Data on Minerals M., 2004 Vol 39 pp 5-13; Pekov, I. V., Chukanov, N. V., Yamnova, N. A., Zadov, A. E., & Tarassoff, P. (2007). Gjerdingenite-Na and gjerdingenite-Ca, two new mineral species of the labuntsovite group. The Canadian Mineralogist, 45(3), 529-539
[World of Stones 95:5-6, p64]
 
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