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Erionite-K

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About Erionite-KHide

Formula:
(K2,Ca,Na2)2[Al4Si14O36] · 15H2O
Lustre:
Vitreous
Hardness:
3½ - 4
Crystal System:
Hexagonal
Name:
Named in 1898 by Arthur Starr Eakle from the Greek εριον meaning wool in allusion to the "wooly" appearance of the type material. Erionite was first found at the Durkee Fire Opal Mine, Swayze Creek, Durkee, Baker Co., Oregon (Tschernich, 1992). In modern nomenclature, the original erionite was erionite-Na, but potassium was nearly equal to sodium. Levinson Rule suffix added in allusion to K dominant excangable cations.
Isostructural with:
A zeolite difficult to distinguish from offrétite.


Classification of Erionite-KHide

Approved
9.GD.20

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
D : Chains of 6-membered rings – tabular zeolites

Physical Properties of Erionite-KHide

Vitreous
Hardness:
3½ - 4 on Mohs scale

Optical Data of Erionite-KHide

Type:
Uniaxial (+)
RI values:
nω = 1.471 nε = 1.474
Max Birefringence:
δ = 0.003
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of Erionite-KHide

Formula:
(K2,Ca,Na2)2[Al4Si14O36] · 15H2O
IMA Formula:
K10[Si26Al10O72] · 30H2O

Crystallography of Erionite-KHide

Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mmc
Cell Parameters:
a = 13.15 Å, c = 15.05 Å
Ratio:
a:c = 1 : 1.144
Unit Cell V:
2,253.82 ų (Calculated from Unit Cell)

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0004973Erionite-KBallirano P, Andreozzi G B, Dogan M, Dogan A U (2009) Crystal structure and iron topochemistry of erionite-K from Rome, Oregon, U.S.A. American Mineralogist 94 1262-12702009Rome, Oregon, USA0293
0014439Erionite-KStaples L W, Gard J A (1959) The fibrous zeolite erionite; its occurrence, unit cell, and structure Mineralogical Magazine 32 261-2811959Durkee opal mine, Swayze Creek, Baker County, Oregon, USA0293
CIF Raw Data - click here to close

Type Occurrence of Erionite-KHide

Other Language Names for Erionite-KHide

Relationship of Erionite-K to other SpeciesHide

Other Members of this group:
Erionite-Ca(Ca,K2,Na2)2[Al4Si14O36] · 15H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
Erionite-Na(Na2,K2,Ca)2[Al4Si14O36] · 15H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Erionite-K associated with Clinoptilolite-CaCa3(Si30Al6)O72 · 20H2O
3 photos of Erionite-K associated with Phillipsite-K(K,Na,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
3 photos of Erionite-K associated with OffretiteKCaMg(Si13Al5)O36 · 15H2O
3 photos of Erionite-K associated with Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
1 photo of Erionite-K associated with Paulingite-K(K2,Ca,Na2,Ba)5[Al10Si35O90] · 45H2O

Related Minerals - Nickel-Strunz GroupingHide

9.GD.05Gmelinite-CaCa2(Si8Al4O24] · 11H2OHex.
9.GD.05Gmelinite-KK4(Si8Al4O24) · 11H2OHex.
9.GD.05Gmelinite-NaNa4(Si8Al4O24] · 11H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
9.GD.10WillhendersoniteKCa[Al3Si3O12] · 5H2OTric.
9.GD.10Chabazite-Ca(Ca,K2,Na2)2[Al2Si4O12]2 · 12H2OTric. 1 : P1
9.GD.10Chabazite-K(K2,Ca,Na2,Sr,Mg)2[Al2Si4O12]2 · 12H2OTrig. 3m (3 2/m) : R3m
9.GD.10Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2OHex.
9.GD.10Chabazite-SrSr2[Al2Si4O12]2 · 12H2OTrig. 3m (3 2/m) : R3m
9.GD.10Chabazite-Mg(Mg0.7K0.5Ca0.5Na0.1)[Al3Si9O24] · 10H2O Trig. 3m (3 2/m) : R3m
9.GD.15Lévyne-Ca(Ca,Na2,K2)[Al2Si4O12] · 6H2OTrig. 3m (3 2/m) : R3m
9.GD.15Lévyne-Na(Na2,Ca,K2)[Al2Si4O12] · 6H2OTrig.
9.GD.20Bellbergite(K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6 · 30H2OHex.
9.GD.20Erionite-Ca(Ca,K2,Na2)2[Al4Si14O36] · 15H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
9.GD.20Erionite-Na(Na2,K2,Ca)2[Al4Si14O36] · 15H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
9.GD.25OffretiteKCaMg(Si13Al5)O36 · 15H2OHex. 6 m2 : P6m2
9.GD.25Wenkite(Ba,K)4(Ca,Na)6[(Si,Al)20O39(OH)2](SO4)3 · 0.5H2OHex.
9.GD.30Faujasite-Ca(Ca,Na2,Mg)3.5[Al7Si17O48] · 32H2OIso.
9.GD.30Faujasite-Mg(Mg,Na2,Ca)3.5[Al7Si17O48] · 32H2OIso.
9.GD.30Faujasite-Na(Na2,Ca,Mg)3.5[Al7Si17O48] · 32H2OIso.
9.GD.35MaricopaitePb7Ca2(Si,Al)48O100 · 32H2OOrth.
9.GD.35Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2OOrth.
9.GD.40Dachiardite-Ca(Ca,Na2,K2)5Al10Si38O96 · 25H2OMon.
9.GD.40Dachiardite-Na(Na2,Ca,K2)5Al10Si38O96 · 25H2OMon.
9.GD.45EpistilbiteCaAl2Si6O16 · 5H2OMon.
9.GD.50Ferrierite-K(K,Na)5(Si31Al5)O72 · 18H2OOrth.
9.GD.50Ferrierite-Mg[Mg2(K,Na)2Ca0.5](Si29Al7)O72 · 18H2OOrth.
9.GD.50Ferrierite-Na(Na,K)5(Si31Al5)O72 · 18H2OMon. 2/m
9.GD.55BikitaiteLiAlSi2O6 · H2OTric. 1 : P1

Other InformationHide

Health Risks:
Carcinogenic upon inhalation of its dust, due to its fibrous structure (Ref.: IARC Monography 42:225-239, 1987)

References for Erionite-KHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Sheppard, R.A. and Gude, A.J. (1969b) Chemical composition and physical properties of the related zeolites offretite and erionite. American Mineralogist: 54: 875-886.
Gualtieri, A., G. Artioli, E. Passaglia, S. Bigi, A. Viani, and J.C. Hanson (1998): Crystal structure-crystal chemistry relationships in the zeolites erionite and offretite American Mineralogist: 83, 590-606.
Passaglia, E., G. Artioli, and A. Gualtieri (1998): Crystal chemistry of the zeolites erionite and offretite American Mineralogist: 83, 577-589.

Internet Links for Erionite-KHide

Localities for Erionite-KHide

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
 
  • British Columbia
    • Kamloops Mining Division
      • Falkland
Tschernich, R. (1992): Zeolites of the World, p.161; American Mineralogist, Volume 67, pages 799-803, 1982,RRUFF database-specimen I.D RO61104
      • Mt. Savona
        • Deadman's River
Tschernich, R. (1992): Zeolites of the World, p.161
China
 
  • Zhejiang
    • Hangzhou
      • Chun'an County
Letian Du and Wenguang Wang (2012): Geological Review 58(6), 1017-1022
Czech Republic
 
  • Liberec Region
    • Nový Bor
Pauliš, P., Hrůzek,L., Sejkora, J., Dolníček, Z., Vrtiška, L., Malíková, R., Ekrt, B., Pour, O., Fedyuk, F., Janeček, O. (2019) Zeolite mineralization from the Zaječí vrch and Poustevna near Nový Bor (Czech Republic). Bulletin Mineralogicko-Petrologickeho, 27(2), 346-369 [in Czech with abstract in English].
  • Ústí nad Labem Region
    • Děčín District
      • Česká Kamenice
Pauliš, P., Hrůzek, L., Janeček, O., Sejkora, J., Malíková, R., Pour, O., Fediuk, F. (2015) Tschernichite, Garronite-Ca and associated zeolite mineralization from Jehla near Česká Kamenice (Czech Republic). Bulletin miner.-petrolog. odď. National muz. Prag.: 23(2): 2015.
      • Krásná Lípa
P.Pauliš,L.Hrůzek,O.Janeček,J.Sejkora,R.Malíková,F.Fedyuk(2014)Dachiardite-Ca and associated mineralization from Doubice-Vápenka near Krásná Lípa(Czech Republic).Bull.Min.-Pet.od.Národní muzeum Praha 22,1
Germany
 
  • Hesse
    • Darmstadt
      • Wetteraukreis
        • Ortenberg
Dogan,Umran and Dugan,Meral (2008) Re-evaluation and re-classification of erionite series minerals,Environ Geochem Health 30:355-366
New Zealand
 
  • Otago Region
    • Waitaki District
J. Thornton in Micro-Scope, March 2007
Russia
 
  • Crimea
Domenico Preite
UK
 
  • Northern Ireland
    • Co. Antrim
Luigi Matei photo
USA
 
  • Arizona
    • Graham Co.
      • Ash Peak Mining District
        • Thumb Butte area
Tschernich, R. (1992): Zeolites of the World, p.143
    • Maricopa Co.
AM61_853
    • Pinal Co.
      • Dudleyville
        • Malpais Hill
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 160, 250; Bideaux, R.A., et al (1960), Some new occurrences of minerals of AZ, AZ Geol. Soc. Digest: 3: 53-56; Thomssen, R.W. (1983), The minerals of Malpais Hill, Pinal Co., AZ, Min.Rec.: 14: 109-113.
azminerals.com
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 160, 250; Bideaux, R.A., et al (1960), Some new occurrences of minerals of AZ, AZ Geol. Soc. Digest: 3: 53-56; Thomssen, R.W. (1983), The minerals of Malpais Hill, Pinal Co., AZ, Min.Rec.: 14: 109-113.
    • Santa Cruz Co.
      • Patagonia Mountains
        • Patagonia Mining District
          • Guajolote Flat
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.:216
  • Nevada
    • Lander Co.
      • Steiner Canyon Mining District
Dogan, Umran and Dogan,Meral (2008) Re-evaluation and re-classification of erionite series minerals:Environ Geochem Health (2008)30:355-366
  • Oregon
    • Baker Co.
      • Swayze Creek
Tschernich, R. (1992): Zeolites of the World, p.159
    • Lincoln Co.
      • Agate Beach
Micro Probe Vol. 9 No. 3, Spring '01; Tschernich, R. (1992): Zeolites of the World, 116
    • Malheur Co.
Dogan,Umran and Dogan,Meral(2008) Re-evaluation and re-classification of erionite series minerals:Environ Geochem Health(2008)30:355-366
    • Marion Co.
The Canadian Mineralogist Vol. 35, pp. 1571-1606 (1997)
  • Washington
    • Douglas Co.
Tschernich (1991): Zeolites of Washington State. Rock & Minerals, 66(4); American Mineralogist, Volume 67, pages 799-803, 1982
 
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