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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, Waitaki District, Otago Region, 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, Waitaki District, Otago Region, 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, Waitaki District, Otago Region, South Island, New Zealand
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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:
Erionite-Ca, Erionite-Na
A zeolite difficult to distinguish from offrétite.


Classification of Erionite-KHide

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-KHide

Lustre:
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
Elements listed:
Al, H, K, O, Si - search for minerals with similar chemistry

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)

Type Occurrence of Erionite-KHide

Other Language Names for Erionite-KHide

Relationship of Erionite-K to other SpeciesHide

Member of:
Erionite Group > Zeolite Group
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:
Clinoptilolite-Ca3 photos of Erionite-K associated with Clinoptilolite-Ca on mindat.org.
Phillipsite-K3 photos of Erionite-K associated with Phillipsite-K on mindat.org.
Offretite3 photos of Erionite-K associated with Offretite on mindat.org.
Montmorillonite3 photos of Erionite-K associated with Montmorillonite on mindat.org.
Paulingite-K1 photo of Erionite-K associated with Paulingite-K on mindat.org.

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 · 12H2O
9.GD.10Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O
9.GD.10Chabazite-SrSr2[Al2Si4O12]2 · 12H2O
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[(SO4)3|(Si,Al)20O39(OH)2] · 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(K2,Na2,Mg,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2OOrth.
9.GD.50Ferrierite-Mg(Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2OOrth.
9.GD.50Ferrierite-Na(Na2,K2,Mg,Ca)3-5Mg[Al5-7Si27.5-31O72] · 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
    • Quzhou
      • Qujiang District
Letian Du and Wenguang Wang (2012): Geological Review 58(6), 1017-1022
Czech Republic
 
  • 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 Region
      • Waitaki District
J. Thornton in Micro-Scope, March 2007
UK
 
  • Northern Ireland
    • Co. Antrim
Luigi Matei photo
Ukraine
 
  • Crimea
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
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