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Erionite-K

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Erionite-K

North railway cut, Malpais Hill, Dudleyville, Pinal Co., Arizona, USA
Erionite-K

Moeraki Point, Otago, South Island, New Zealand
Erionite-K

Yaquina Head Quarry, Agate Beach, Lincoln Co., Oregon, USA
Erionite-K

North railway cut, Malpais Hill, Dudleyville, Pinal Co., Arizona, USA
Erionite-K

Moeraki Point, Otago, South Island, New Zealand
Erionite-K

Yaquina Head Quarry, Agate Beach, Lincoln Co., Oregon, USA
Erionite-K

North railway cut, Malpais Hill, Dudleyville, Pinal Co., Arizona, USA
Erionite-K

Moeraki Point, Otago, South Island, New Zealand
Formula:
K10(Si26Al10O72) · 30H2O
System:
Hexagonal
Lustre:
Vitreous
Hardness:
3½ - 4
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:
Erionite-Ca, Erionite-Na
A zeolite difficult to distinguish from offrétite.


Classification of Erionite-K

IMA status:
Approved
Strunz 8th ed.:
8/J.26-92
Nickel-Strunz 10th (pending) ed.:
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-K

Lustre:
Vitreous
Hardness (Mohs):
3½ - 4

Optical Data of Erionite-K

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-K

IMA Formula:
K10(Si26Al10O72) · 30H2O
Elements listed in formula:
Al, H, K, O, Si - search for minerals with similar chemistry

Crystallography of Erionite-K

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 Volume:
V 2,253.82 ų (Calculated from Unit Cell)

Type Occurrence of Erionite-K

Type Locality:
Rome, Marion Co., Oregon, USA

Relationship of Erionite-K to other Species

Member of:
Erionite Group > Zeolite Group
Other Members of Group:
Erionite-Ca(Ca,K2,Na2)2[Al4Si14O36] · 15H2O
Erionite-Na(Na2,K2,Ca)2[Al4Si14O36] · 15H2O
Related Minerals - Nickel-Strunz Grouping):
9.GD.05Gmelinite-CaCa2(Si8Al4)O24 · 11H2O
9.GD.05Gmelinite-KK4(Si8Al4)O24 · 11H2O
9.GD.05Gmelinite-NaNa4(Si8Al4)O24 · 11H2O
9.GD.10WillhendersoniteKCa(Si3Al3)O12 · 5H2O
9.GD.10Chabazite-CaCa2Al4Si8O24 · 13H2O
9.GD.10Chabazite-K(K2NaCa0.5)Al4Si8O24 · 11H2O
9.GD.10Chabazite-Na(Na3K)Al4Si8O24 · 11H2O
9.GD.10Chabazite-Sr(Sr,Ca)2Al4Si8O24 · 11H2O
9.GD.10Chabazite-Mg(Mg0.7K0.5Ca0.5Na0.1)Al3Si9O24 · 10H2O
9.GD.15Lévyne-CaCa3(Si12Al6)O36 · 18H2O
9.GD.15Lévyne-NaNa6(Si12Al6)O36 · 18H2O
9.GD.20Bellbergite(K,Ba,Sr)2Sr2Ca2(Ca,Na)4(Si,Al)36O72 · 30H2O
9.GD.20Erionite-CaCa5(Si26Al10O72) · 30H2O
9.GD.20Erionite-NaNa10(Si26Al10O72) · 30H2O
9.GD.25OffretiteKCaMg(Si13Al5)O36 · 15H2O
9.GD.25WenkiteBa4Ca6(Si,Al)20O41(OH)2(SO4)3 · H2O
9.GD.30Faujasite-Ca(Ca,Na,Mg)2(Si,Al)12O24 · 15H2O
9.GD.30Faujasite-Mg(Mg,Na,K,Ca)2(Si,Al)12O24 · 15H2O
9.GD.30Faujasite-Na(Na,Ca,Mg)2(Si,Al)12O24 · 15H2O
9.GD.35MaricopaiteCa2Pb7(Si36Al12)O99 · n(H2O,OH)
9.GD.35Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
9.GD.40Dachiardite-CaCa2(Si20Al4)O48 · 13H2O
9.GD.40Dachiardite-NaNa4(Si20Al4)O48 · 13H2O
9.GD.45EpistilbiteCa3(Si18Al6)O48 · 16H2O
9.GD.50Ferrierite-K(K,Na)5(Si31Al5)O72 · 18H2O
9.GD.50Ferrierite-Mg[Mg2(K,Na)2Ca0.5](Si29Al7)O72 · 18H2O
9.GD.50Ferrierite-Na(Na,K)5(Si31Al5)O72 · 18H2O
9.GD.55BikitaiteLiAlSi2O6 · H2O

Other Names for Erionite-K

Name in Other Languages:

Other Information

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

References for Erionite-K

Reference List:
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-K

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    • Localities for Erionite-K

    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.
    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 Province
      • Quzhou Prefecture
        • Qujiang District
    		Letian Du and Wenguang Wang (2012): Geological Review 58(6), 1017-1022
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Ústí Region
        • Děčín (Tetschen)
          • Česká Kamenice
    		P. Pauliš,L.Hrůzek,O.Janeček,J.Sejkora,R.Malíková,O.Pour and F.Fediuk(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
      • Vogelsberg
        • Ortenberg
    		Dogan,Umran and Dugan,Meral (2008) Re-evaluation and re-classification of erionite series minerals,Environ Geochem Health 30:355-366
    New Zealand
     
    • South Island
      • Otago
    		J. Thornton in Micro-Scope, March 2007
    UK
     
    • Northern Ireland
      • Co. Antrim
    		Luigi Matei photo
    Ukraine
     
    • Crimea Oblast'
      • Crimea peninsula
    		Domenico Preite
    USA
     
    • Arizona
      • Graham Co.
        • Ash Peak District
          • Thumb Butte area
    		Tschernich, R. (1992): Zeolites of the World, p.143
      • Maricopa Co.
    		AM61_853
      • Mohave Co.
    		azminerals.com
      • 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 Mts
          • Patagonia District
            • Guajolote Flat
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.:216
    • Nevada
      • Lander Co.
        • Steiner Canyon 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
    Mineral and/or Locality  
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