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This page kindly sponsored by John Kashuba
Colourless, pink (often zoned)
Crystal System:
Member of:
Named after Jack Zektzer (1936 - ), mineral collector of Seattle, Washington, USA, who presented the material for study.
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Classification of ZektzeriteHide

Approval Year:

9 : SILICATES (Germanates)
D : Inosilicates
N : Inosilicates with 6-periodic double chains

66 : INOSILICATES Double-Width,Unbranched Chains,(W=2)
3 : Amphiboles - Ca-Na subgroup

14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf

Physical Properties of ZektzeriteHide

Colourless, pink (often zoned)

Optical Data of ZektzeriteHide

Biaxial (-)
RI values:
nα = 1.582 nβ = 1.584 nγ = 1.584
Max Birefringence:
δ = 0.002
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r < v moderate

Chemical Properties of ZektzeriteHide

IMA Formula:
Common Impurities:

Crystallography of ZektzeriteHide

Crystal System:
Cell Parameters:
a = 14.3 Å, b = 17.33 Å, c = 10.14 Å
a:b:c = 0.825 : 1 : 0.585
Unit Cell V:
2,512.88 ų (Calculated from Unit Cell)

Type Occurrence of ZektzeriteHide

Synonyms of ZektzeriteHide

Other Language Names for ZektzeriteHide

Simplified Chinese:硅锆钠锂石
Traditional Chinese:矽鋯鈉鋰石

Relationship of Zektzerite to other SpeciesHide

Member of:
Other Members of this group:

Common AssociatesHide

Associated Minerals Based on Photo Data:
Arfvedsonite13 photos of Zektzerite associated with Arfvedsonite on
Microcline9 photos of Zektzerite associated with Microcline on
Albite5 photos of Zektzerite associated with Albite on
Astrophyllite4 photos of Zektzerite associated with Astrophyllite on
Feldspar Group4 photos of Zektzerite associated with Feldspar Group on
Bafertisite3 photos of Zektzerite associated with Bafertisite on
Riebeckite3 photos of Zektzerite associated with Riebeckite on
Hejtmanite2 photos of Zektzerite associated with Hejtmanite on
Mica Group1 photo of Zektzerite associated with Mica Group on
Sogdianite1 photo of Zektzerite associated with Sogdianite on

Related Minerals - Nickel-Strunz GroupingHide

9.DN.10Semenovite-(Ce)Na8Ca2FeBe6Ce2Si14O40(OH)4F4Orth. mmm (2/m 2/m 2/m)
9.DN.15Ashcroftine-(Y)K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8 · 8H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm

Related Minerals - Dana Grouping (8th Ed.)Hide

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.10.1ZirconZr(SiO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
14.10.2HafnonHfSiO4Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
14.10.5VlasoviteNa2ZrSi4O11Mon. 2/m : B2/b
14.10.6Keldyshite(Na,H)2ZrSi2O7Tric. 1 : P1
14.10.7GaidonnayiteNa2Zr(Si3O9) · 2H2OOrth. mmm (2/m 2/m 2/m) : Pmna
14.10.8TerskiteNa4ZrSi6O16 · 2H2OOrth.
14.10.9ElpiditeNa2ZrSi6O15 · 3H2OOrth.
14.10.10HilairiteNa2Zr[SiO3]3 · 3H2OTrig.
14.10.11PetarasiteNa5Zr2(Si6O18)(Cl,OH) · 2H2OMon. 2/m : P21/m
14.10.15KostyleviteK2Zr(Si3O9) · H2OMon.
14.10.16UmbiteK2(Zr,Ti)Si3O9 · H2OOrth.
14.10.17ParaumbiteK3Zr2H(Si3O9)2 · nH2OOrth.
14.10.18GeorgechaoiteNaKZr[Si3O9] · 2H2OOrth. mm2
14.10.20CalciocatapleiiteCaZr(Si3O9) · 2H2O
14.10.21CalciohilairiteCaZr[SiO3]3 · 3H2OTrig.
14.10.22ArmstrongiteCaZr[Si6O15] · 3H2OMon.
14.10.23Lemoynite(Na,K)2CaZr2Si10O26 · 5H2OMon. 2/m : B2/b
14.10.24CatapleiiteNa2Zr(Si3O9) · 2H2OMon.
14.10.26LovozeriteNa2Ca(Zr,Ti)(Si6O12)[(OH)4O2] · H2OMon.
14.10.27Låvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2Mon. 2/m : P21/b
14.10.28PenkvilksiteNa4Ti2Si8O22 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
14.10.29DarapiositeK(Na,◻,K)2(Li,Zn,Fe)3(Mn,Zr,Y)2[Si12O30]Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
14.10.31KomkoviteBaZr[Si3O9] · 3H2OTrig.

Fluorescence of ZektzeriteHide

Fluoresces blue in SW UV

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 ZektzeriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Dunn, P.J., R.C. Rouse, B. Cannon, and J.A. Nelen (1977) Zektzerite: a new
lithium sodium zirconium silicate related to tuhualite and the osumilite group. American Mineralogist 62, 416-420.
Ghose, S. and C. Wan (1978) Zektzerite, NaLiZrSi6O15: a silicate with six-tetrahedral-repeat double chains. American Mineralogist 63, 304-310.
Pautov, L. A.; Ignatenko, K. I. (1992) Zektzerite - occurrence in Tadzhikistan. Mineralogicheskii Zhurnal 14, 75-78 (in Russian).

Internet Links for ZektzeriteHide

Localities for ZektzeriteHide

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.
  • Aisén del General Carlos Ibáñez del Campo Region
    • Aisén Province (Aysén Province)
Welkner, Daniela; Godoy, Estanislao; Bernhardt, Heinz-J. (2002): Peralkaline rocks in the Late Cretaceous Del Salto Pluton, Eastern Patagonian Andes, Aisen, Chile (47° 35'S). Revista Geologica de Chile 29, 3-15.
  • Lapland Region
    • Savukoski
      • Tulppio
        • Sokli carbonatite complex
AL-Ani, Thair and Sarapää, Olli 2016. Abundance of REE bearing minerals in carbonatite and lambrophyre dikes in Kaulus area, Sokli carbonative complex, NE Finland. Geologian Tutkimuskeskus 7/2016.
  • Antsiranana Province
    • Diana Region (Northern Region)
      • Ambanja District
        • Ampasindava Peninsula
G. Estrade et al. (2011): HFSE enrichment in a peralkaline granite related skarn, Ampasindava Peninsula, Madagascar.- University of Toulouse, France; presentation given at the University of Tübingen.
  • Zomba District
Guastoni, A., Pezzotta, F., & Zorzi, F. (2008). Neufunde aus Alkalipegmatiten am Mount Malosa, Malawi: Die weltbesten Zektzeritkristalle und interessante Pseudomorphosen. MINERALIEN MAGAZIN LAPIS, 33(3), 38.
  • Vestfold
    • Sandefjord
      • Haneholmveien
Larsen, K. E. & Kolitsch, U. (2012): An unique mineral suite in a syenite pegmatite at Virikkollen, Sandefjord, Larvik Plutonic Complex, Norway. Norsk Bergverksmuseum Skrifter. 49, 35-44
  • Region of Republican Subordination
    • Tien Shan Mtn
      • Alai Range (Alayskiy)
Pautov, L. A.; Ignatenko, K. I. (1992): Zektzerite - occurrence in Tadzhikistan. Mineralogicheskii Zhurnal 14, 75-78 (in Russian).; Can. Mineral. 42: 107-119 (2004)
  • Washington
    • Okanogan Co.
      • Golden Horn Batholith
[MinRec 9:253, 20:152]; Rocks and Minerals, 66:6, p. 457; American Mineralogist, V.73, p.1191-1194; Mineralogical Record 40:328
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