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About Heulandite-NaHide

(Na,Ca,K)6(Si,Al)36O72 · 22H2O
White, Colorless, Red, Yellow, Brown, Green
Vitreous, Pearly
3 - 3½
Specific Gravity:
Crystal System:
Named in 1822 by Henry James Brooke in honor of Johann Heinrich "John Henry" Heuland [March 21, 1778 Beyreuth, Germany - November 16, 1856 Hastings, Sussex, England, UK], a mineral collector and mineral dealer living in England and for the suffix indicating dominant Na. Despite having an international reputation, there are no known images of Henry Heuland.

Classification of Heulandite-NaHide


9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
E : Chains of T10O20 Tetrahedra
Dana 7th ed.:

Physical Properties of Heulandite-NaHide

Vitreous, Pearly
White, Colorless, Red, Yellow, Brown, Green
3 - 3½ on Mohs scale
Perfect on the {010}
2.2 g/cm3 (Measured)    2.12 g/cm3 (Calculated)

Optical Data of Heulandite-NaHide

Biaxial (+)
RI values:
nα = 1.476 - 1.506 nβ = 1.479 - 1.510 nγ = 1.479 - 1.517
Measured: 10° to 48°
Max Birefringence:
δ = 0.003 - 0.011
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r > v

Chemical Properties of Heulandite-NaHide

(Na,Ca,K)6(Si,Al)36O72 · 22H2O

Crystallography of Heulandite-NaHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 7.46 Å, b = 17.84 Å, c = 15.88 Å
β = 91.433°
a:b:c = 0.418 : 1 : 0.89
Unit Cell V:
2 ų

X-Ray Powder DiffractionHide

Image Loading

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

Type Occurrence of Heulandite-NaHide

Other Language Names for Heulandite-NaHide

Relationship of Heulandite-Na to other SpeciesHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
6 photos of Heulandite-Na associated with DolomiteCaMg(CO3)2
4 photos of Heulandite-Na associated with Opal-ANSiO2 · nH2O
2 photos of Heulandite-Na associated with PyriteFeS2
1 photo of Heulandite-Na associated with HydroxylapatiteCa5(PO4)3(OH)
1 photo of Heulandite-Na associated with Stilbite-CaNaCa4[Al9Si27O72] · nH2O
1 photo of Heulandite-Na associated with ChalcedonySiO2
1 photo of Heulandite-Na associated with Clinoptilolite-NaNa6(Si30Al6)O72·20H2O

Related Minerals - Nickel-Strunz GroupingHide

9.GE.05Clinoptilolite-KK6(Si30Al6)O72·20H2OMon. 2/m
9.GE.05Clinoptilolite-NaNa6(Si30Al6)O72·20H2OMon. 2/m : B2/m
9.GE.05Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2OMon. 2/m : B2/m
9.GE.05Heulandite-K(K,Ca,Na)5(Si27Al9)O72 · 26H2OMon. 2/m : B2/m
9.GE.05Heulandite-Sr(Sr,Na,Ca)5(Si27Al9)O72 · 24H2OMon. 2/m : B2/m
9.GE.05Heulandite-Ba(Ba,Ca,K)5(Si27Al9)O72 · 22H2OMon. 2/m : B2/m
9.GE.10Stilbite-CaNaCa4[Al9Si27O72] · nH2OMon. 2/m : B2/m
9.GE.10Stilbite-Na(Na,Ca,K)6-7[Al8Si28O72] · nH2OMon. 2/m : B2/m
9.GE.15Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2OOrth. mmm (2/m 2/m 2/m)
9.GE.15StelleriteCa4(Si28Al8)O72 · 28H2OOrth. mmm (2/m 2/m 2/m) : Fmmm
9.GE.20Brewsterite-Ba(Ba,Sr)[Al2Si6O16] · 5H2OMon. 2/m : P21/m
9.GE.20Brewsterite-Sr(Sr,Ba,Ca)[Al2Si6O16] · 5H2OMon. 2/m : P21/m

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 Heulandite-NaHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Merkle, A.B., Slaughter, M. (1968) Determination and refinement of the structure of heulandite: American Mineralogist: 53: 1120-1138.
Alberti, A. (1972) On the crystal structure of the zeolite heulandite: Tschermaks Mineralogische und Petrographische Mitteilungen: 18: 129-146.
Esenli, F., Kumbasar, I. (1998) X-Ray Diffraction Intensity Ratios I(111)//(311) of Natural Heulandites and Clinoptilolites, Clays and Clay Minerals: 46(6): 679-686.
Comodi, P., Gatta, G.D., Zanazzi, P.F. (2001) High-pressure structural behavior of heulandite. European Journal of Mineralogy: 15: 247-255.

Internet Links for Heulandite-NaHide

Localities for Heulandite-NaHide

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.
  • Upper Austria
    • Linz-Land District
      • Traun
        • Pucking
Kolitsch, U. (2015): 1935) Almandin, Aragonit, Baryt, Heulandit-Na, Klinoptilolith-Na, ein Magnesiochromit-Spinell-Mischkristall und Schwefel vom Traunkraftwerk Pucking, Oberösterreich. Pp. 241-243 in Niedermayr, G. et al. (2015): Neue Mineralfunde aus Österreich LXIV. Carinthia II, 205./125., 207-280.
  • South Aegean
    • Tinos
      • Tinos Island
        • Panormos Bay
Gunnar Färber specimens
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Omegna
- Albertini,C. (2000) : Ritrovamenti nel Rio Inferno, Brughiere di Omegna. Prima segnalazione nel granito di Baveno : uranofane-beta - Rivista Mineralogica Italiana, Milano, XXIV, 2, 88-92.
  • Veneto
    • Vicenza Province
      • Gambellara
        • S. Marco hill
Boscardin M.,Daleffe A.,Rocchetti I., Zordan A. (2011) " Minerali del Vicentino - Aggiornamenti, località e nuove determinazioni " Museo di Archeologia e Scienze Naturali “G. Zannato” – Montecchio Maggiore (Vicenza), pp.183
      • Monte di Malo
        • Contrada Vanzi
Carbonin, S., Manzone, A., Boscardin M., Pegoraro, S. (2003): Zeoliti del Vicentino: caratterizzazioni chimiche e ottiche nella serie dell'heulandite. Rivista Mineralogica Italiana, 4, 186-195.
      • Montecchio Maggiore
        • San Pietro
  • Fukuoka prefecture
    • Munakata City
Ueno et al (1982) Sanko-Gakkai Kou'en-Youshi, 149.
  • Tokyo Metropolis
    • Ogasawara Subprefecture
      • Ogasawara Islands
        • Chichijima Group
Mineralogical Journal Vol. 11 (1982) , No. 1 pp1-14
  • Khomas Region
    • Windhoek Rural
      • Aris
Uwe Kolitsch (SXRD and EDS analyses); Kolitsch, U., Blaß, G., Jahn, S., Cámara, F., von Bezing, L., Wartha, R. R., Tremmel, G., Sturla, M., Cerea, P., Skebo, M. and Ciriotti, M. E. (2016): Aris - mineralogy of the famous alkaline phonolite. AMI - Associazione Micromineralogica Italiana, Cremona, Italy, 95 pp.
  • Vestfold
    • Holmestrand
Nordrum, F. S., Larsen, A.O. & Erambert, M. (2005): Minerals of the heulandite series in Norway- additional data and summary. Norsk Bergverksmuseum Skrift, 30: 98-112
  • Kamchatka Krai
Pavel M. Kartashov analytical data (1984)
  • Zabaykalsky Krai
    • Chitinskaya Oblast
P.M. Kartashov data
  • California
    • Kern Co.
      • Boron
        • Kramer Borate deposit
          • U.S. Borax Mine (Pacific West Coast Borax; Kramer Mine; Baker Mine)
Am Min 90:1186-1191; Tschernich, R. (1992): Zeolites of the World, 64; Clays and Clay Minerals, Vol. 36, No. 2, 131-136, 1988
  • Colorado
    • Mineral Co.
      • Wolf Creek Pass
Patrick haynes. ID via Tony Kampf
  • Idaho
    • Custer Co.
      • Bay Horse Mining District
        • Challis
Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
Fluorescent Zeolites and Associated Minerals from the Rat's Nest Mine, Challis, Idaho: John Cornish, Jan 7, 2005
Tschernich, R. (1992): Zeolites of the World, p.349
      • Warm Spring Creek Mining District
Tom Loomis specimen
  • Oregon
    • Jefferson Co.
Rolf Luetcke
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