Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery


This page is currently not sponsored. Click here to sponsor this page.
Na2ZrSi6O15 · 3H2O
Dimorph of:
This page provides mineralogical data about Elpidite.

Classification of Elpidite

Approved, 'Grandfathered' (first described prior to 1959)

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains

72 : PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
5 : Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with corrugated and complex layers

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

Physical Properties of Elpidite

Hardness (Mohs):

Optical Data of Elpidite

Biaxial (+)
RI values:
nα = 1.560 nβ = 1.565 - 1.569 nγ = 1.574
Max Birefringence:
δ = 0.014
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 Elpidite

Na2ZrSi6O15 · 3H2O
Elements listed in formula:
Common Impurities:

Crystallography of Elpidite

Crystal System:
Cell Parameters:
a = 7.29 Å, b = 14.3 Å, c = 7.03 Å
a:b:c = 0.51 : 1 : 0.492
Unit Cell Volume:
V 732.86 ų (Calculated from Unit Cell)

Crystallographic forms of Elpidite

Crystal Atlas:
Image Loading
Click on an icon to view
Elpidite no.3 - Goldschmidt (1913-1926)
Elpidite no.5 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by

Edge Lines | Miller Indicies | Axes

Opaque | Translucent | Transparent

Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Type Occurrence of Elpidite

Relationship of Elpidite to other Species

9.DG.08PlombièriteCa5Si6O16(OH)2 · 7H2O
9.DG.10ClinotobermoriteCa5Si6O17 · 5H2O
9.DG.10RiversideiteCa5Si6O16(OH)2 · 2H2O
9.DG.10TobermoriteCa5Si6O16(OH)2 · nH2O
9.DG.20JenniteCa9Si6O16(OH)10 · 6H2O
9.DG.25ParaumbiteK3Zr2H(Si3O9)2 · 3H2O
9.DG.25UmbiteK2ZrSi3O9 · H2O
9.DG.30SørenseniteNa4Be2Sn(Si3O9)2 · 2H2O
9.DG.45ZoriteNa6Ti5Si12O34(O,OH)5 · 11H2O
9.DG.45ChivruaiiteCa4(Ti,Nb)5(Si6O17)2(OH,O)5 · 13-14H2O
9.DG.50Haineaultite(Na,Ca)5Ca(Ti,Nb)5Si12O34(OH,F)8 · 5H2O
9.DG.55EpididymiteNa2Be2Si6O15 · H2O
9.DG.60EudidymiteNa2Be2Si6O15 · H2O
9.DG.80FluorcanasiteK3Na3Ca5Si12O30F4 · H2O
9.DG.90FrankameniteK3Na3Ca5Si12O30(F,OH)4 · H2O
9.DG.92Charoite(K,Sr,Ba,Mn)15-16(Ca,Na)32Si70(O,OH)180(OH,F)4 · nH2O
14.10.7GaidonnayiteNa2ZrSi3O9 · 2H2O
14.10.8TerskiteNa4ZrSi6O16 · 2H2O
14.10.10HilairiteNa2ZrSi3O9 · 3H2O
14.10.11PetarasiteNa5Zr2Si6O18(Cl,OH) · 2H2O
14.10.15KostyleviteK2ZrSi3O9 · H2O
14.10.16UmbiteK2ZrSi3O9 · H2O
14.10.17ParaumbiteK3Zr2H(Si3O9)2 · 3H2O
14.10.18GeorgechaoiteKNaZrSi3O9 · 2H2O
14.10.20CalciocatapleiiteCaZrSi3O9 · H2O
14.10.21CalciohilairiteCaZrSi3O9 · 3H2O
14.10.22ArmstrongiteCaZrSi6O15 · 2H2O
14.10.23LemoyniteNa2CaZr2Si10O26 · 5-6H2O
14.10.24CatapleiiteNa2ZrSi3O9 · 2H2O
14.10.28PenkvilksiteNa4Ti2Si8O22 · 4H2O
14.10.31KomkoviteBaZrSi3O9 · 3H2O

Other Names for Elpidite

Name in Other Languages:

Other Information

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 Elpidite

Reference List:
Lindström G (1894) Elpidit, ett nytt mineral från Igaliko, Geologiska Föreningens i Stockholm Förhandlingar, 16, 330-335

American Mineralogist: 58: 106-109.

A. A. Grigor’eva, N. V. Zubkova, I. V. Pekov, U. Kolitsch, D. Yu. Pushcharovsky, M. F. Vigasina, G. Giester, T. Dordević, E. Tillmanns and N. V. Chukanov (2011): Crystal chemistry of elpidite from Khan Bogdo (Mongolia) and its K- and Rb-exchanged forms. Crystallography Reports, 56, 832-841.

Cametti, Georgia; Armbruster, Thomas; Nagashima, Mariko (2016): Dehydration and thermal stability of elpidite: An in-situ single crystal X-ray diffraction study. Microporous And Mesoporous Materials 227, 81-87.

Internet Links for Elpidite URL:
Please feel free to link to this page.
The following Elpidite specimens are currently listed for sale on

Localities for Elpidite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
  • Ontario
    • Thunder Bay District
McLaughlin (1990)
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Chao, G.Y. (1967), Leucophanite, elpidite, narsarsukite from the Desourdy quarry, Mont St. Hilaire, Quebec. Canadian Mineralogist: 9: 286-87; Henderson, W. (1979), Oriented overgrowth of labuntsovite on elpidite from Mont St.-Hilaire, Quebec, Canada. Mineralogical Record: 10: 970; Falls R.B.(1983), Elpidite and narsarsukite from Mont Saint-Hilaire, Quebec. B.S. Thesis, University of Toronto, Canada.
      • Lajemmerais RCM
        • Varennes & St-Amable
HORVÁTH, L., PFENNINGER HORVÁTH, E., GAULT, R.A., and TARASSOFF, P. (1998) Mineralogy of the Saint Amable sill, Varennes and Saint Amable, Québec, Canada. Mineralogical Record, 29, 83 118.
Horváth, L., Pfenninger-Horváth, E., Gault, R. A., & Tarassoff, P. (1998): Mineralogy of the Saint-Amable Sill, Varennes and Saint-Amable, Québec. Mineralogical Record, 29: 83-118.
    • Montréal
TARASSOFF, P., HORVÁTH, L. and PFENNINGER-HORVÁTH, E. (2006) Famous mineral localities: the Francon quarry, Montréal, Québec. Mineralogical Record, 37, 5-60.
      • Montréal-Est
Canadian Museum of Nature collection
  • Québec & Newfoundland and Labrador
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.; 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
    • Narsaq
      • Igaliku (Igaliko)
        • Narsaarsuk Plateau
Lindström G (1894) Elpidit, ett nytt mineral från Igaliko, Geologiska Föreningens i Stockholm Förhandlingar, 16, 330-335; Bøgghild, O.B. (1953): The Mineralogy of Greenland. Meddelelser om Grønland, Bd. 149. Nr. 3., C.A. Reitzels Forlag, Copenhagen. 445 p. (p.243)
[Mineralogical Record - Vol 24 No 2]; Petersen, O.V. (2001): List of all minerals identified in the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin. 190, 25-33
  • Eastern Kazakhstan Province (Shyghys Qazaqstan Oblysy; Vostochno-Kazakhstanskaya Oblast')
      • Akzhaylyautas Mts (Akzhailyautas Mts; Akjaylautas Mts; Akzhalautas Mts)
Mineev D.A. (1968) Geochemistry of apogranites and rare-metal metasomatites of North-Western Tarbagatai, - Moscow, Nauka, 276p. (in Rus.)
  • Zomba District
No reference listed
  • Gobi Desert
Vladykin N.V., Kovalenko V.I., Dorfman M.D. (1981) Mineralogical and geochemical pecularities of Khan Bogdo massif of an alkaline granites (MPR), - Moscow, Nauka, p. 136 (in Rus.); Kynicky, J., Chakhmouradian, A.R., Xu, C., Krmicek & Galilova, M. (2011): Distribution and evolution of zirconium mineralization in peralkaline granites and associated pegmatites of the Khan Bogd Complex, southern Mongolia. Canadian Mineralogist. 49, 947-965.; J Kynický, C Xu, J Mašek, O Jaroš, H Káňová (2009) Arfvedsonite pegmatites of Khan Bogd massif, Mongolia: Zr mineralization. pp222-224 in Czech
Jindřich Kynický
  • Hovd Aimag (Khovd Aimag)
    • Altai Mts
Kovalenko V.I., Tsaryeva G.M., Goreglyad A.V., Yarmolyuk V.V., Troitsky V.A., Hervig R.L., Farmer, G.L., (1995) The peralkaline granite-related Khaldzan-Buregtey rare metal (Zr, Nb, REE) deposit, western Mongolia - ECONOMIC GEOLOGY, v. 90, p. 530–547.
Kovalenko, V. I., Tsaryeva, G. M., Goreglyad, A. V., Yarmolyuk, V. V., Troitsky, V. A., Hervig, R. L., & Farmer, G. (1995). The peralkaline granite-related Khaldzan-Buregtey rare metal (Zr, Nb, REE) deposit, western Mongolia. Economic Geology, 90(3), 530-547.
  • Béni Mellal-Khénifra Region
    • Khénifra Province
      • Tamazeght Mountain Range
Khadem Allah, B. (1993)
  • Oppland
    • Lunner
      • Nordmarka
Am Min 90:1227; Raade, G. & Haug, J.(1982): Gjerdingen. Fundstelle seltener Mineralien in Norwegen. LAPIS 7, 9-15
  • Vestfold
    • Larvik
      • Hedrum
Larsen, K. E. & Andersen, F. (2009): Mineralforekomster i den østlige delen av Siljan-Hvarnes plutonkompleks, sørvestre Vestfold. Norsk Bergverksmuseums Skrift, 41: 54-63
      • Stavern (Fredriksvärn)
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
    • Sandefjord
      • Østerøya
Berge, S. A. & Andersen, F. (2002): Mineralforekomster i Sandefjordområdet. Norsk Bergverksmuseums Skrift. 20, 50-59
      • Vesterøya
Berge, S.A., Larsen, K.E. & Andersen, F. (2011): Buer, Vesterøya, Sandefjord- en typelokalitet for et nytt mineral. Norsk Bergverksmuseum Skrift. 46: 49-56
Svein a. Berge collection; Larsen, K. E. (2015). Noen funn av mineraler i Norge 2013-2015. Norsk Mineralsymposium 2015, 79-88.
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71; Berge, S. A. (2013):Mineralene i Husebyyåsen feltspatbrudd, Vesterøya, Sandefjord. Norsk Bergverksmuseum Skrifter. 50, 93-99
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
Raade, G & Larsen, A. O. (1980): Polylithionite from syenite pegmatite at Vøra, Sandefjord, Oslo Region, Norway. Contributions to the Mineralogy of Norway, no 65. Norsk Geologisk Tidskrift 60, 117-124
  • Azores District
    • São Miguel Island
      • Água de Pau Massif
Samples collected by Luigi Chiappino and analysed by Dr. Anthony Kampf, Natural History Museum of Los Angeles County, USA
  • Eastern-Siberian Region
    • Sakha Republic (Saha Republic; Yakutia)
      • Aldan Shield
        • Chara and Tokko Rivers Confluence
[Lapis 1993:4 p.13-20]
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
          • Kukisvumchorr Mt
            • Kirovskii apatite mine (Kirovsky Mine; Kirovskii Mine; Kirov Mine)
Pekov, I. et al (2003): New Data on Minerals: 38: 20-33.
Хомяков А.П., Курова Т.Ф., Шумяцкая Р.Г. и др. (1981) О новом цирконосиликате Na5Zr2[Si6O18]Clx2H2O и его кристаллической структуре,- ДАН СССРб т.257, №3, с. 622-624.
        • Lovozero Massif
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Kartashov, P.M., Ferraris, G., Soboleva, S.V., Chukanov, N.V. (2006): Caryochroite, a new heterophyllosilicate mineral species related to nafertisite from the Lovozero massif (Kola Peninsula, Russia). Canadian Mineralogist, 44, 1331-1339
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Pekov I V, Chukanov N V, Khomyakov A P, Rastsvetaeva R K, Kucherinenko Y V, Nedel'ko V V (1999) Korobitsynite, Na3-x(Ti,Nb)2[Si4O12](OH,O)2·3-4H2O, a new mineral from Lovozero massif, Kola Peninsula, Zapiski Vserossijskogo Mineralogicheskogo Obshchestva, 128, issue 3 72-79; Pekov, I.V. (2000): Lovozero Massif. Moscow, Ocean Pictures Ltd, 480 pp.
[AmMin 85:1322]; 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).
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
          • Kuftn'yun Mt
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
[World of Stones 95:5-6, p64]
  • Scotland
    • Outer Hebrides
Sabine, P.A. (196O), Bull. geol. Surv. Gt. Britain, 16, 167-8. [Confirms an earlier record by Lacroix (1921)]; Young, B.R., Hawkes, J.R., Merriman, R.J. and Styles, M.T. (1978) Bazirite, BaZrSi3O9, a New Mineral from Rockall Island, Inverness-shire, Scotland. Mineralogical Magazine, vol. 42, n° 321, 35-40.; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177.
  • Arkansas
    • Hot Spring Co.
      • Magnet Cove
Rocks & Min.:63:109.
Henry Barwood - unpublished (2010)
  • New Mexico
    • Otero Co.
      • Cornudas Mts
Michael C. Michayluk collection
Minerals of New Mexico 3rd ed.
  • North Carolina
Smithsonian Institution Mineral Reference Collection No.M6264-00
  • Utah
    • Uintah Co.
UGMS Bull 117 Minerals and Mineral Localities of Utah
      • Uteland Knoll District (Ouray District)
        • Ouray
Min Rec 8:5 p369
  • Washington
    • Okanogan Co.
      • Golden Horn Batholith
Micro Probe Volume VI Number 8; Rocks and Minerals, 66:6, p. 454
Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2017, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: May 25, 2017 09:35:34 Page generated: May 16, 2017 10:28:27
Go to top of page