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Clinoptilolite-K

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Formula:
K6(Si30Al6)O72·20H2O
Generally not pure but containing additional Na and/or Ca. Formula previously given as (K,Na,Ca)2-3Al3(Al,Si)2Si13O36.12H2O.
Lustre:
Vitreous
Hardness:
3½ - 4
Crystal System:
Monoclinic
Name:
From the Greek klino - "oblique" ptylon - "feather" and lithos - "stone." Named as the monoclinic dimorph of "ptilolite" (mordenite).
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Classification of Clinoptilolite-KHide

Approved, 'Grandfathered' (first described prior to 1959)
9.GE.05

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
E : Chains of T10O20 Tetrahedra

Physical Properties of Clinoptilolite-KHide

Vitreous
Hardness:
3½ - 4 on Mohs scale

Optical Data of Clinoptilolite-KHide

Type:
Biaxial (+/-)
RI values:
nα = 1.476 - 1.491 nβ = 1.479 - 1.493 nγ = 1.479 - 1.497
2V:
Measured: 31° to 48°
Max Birefringence:
δ = 0.003 - 0.006
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v to r < v strong

Chemical Properties of Clinoptilolite-KHide

Formula:
K6(Si30Al6)O72·20H2O

Generally not pure but containing additional Na and/or Ca. Formula previously given as (K,Na,Ca)2-3Al3(Al,Si)2Si13O36.12H2O.
IMA Formula:
K6(Si30Al6)O72 · 20H2O

Crystallography of Clinoptilolite-KHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 17.688 Å, b = 17.902 Å, c = 7.409 Å
β = 116.5°
Ratio:
a:b:c = 0.988 : 1 : 0.414
Unit Cell V:
2,099.57 ų (Calculated from Unit Cell)

Type Occurrence of Clinoptilolite-KHide

Other Language Names for Clinoptilolite-KHide

Relationship of Clinoptilolite-K to other SpeciesHide

Other Members of this group:
Clinoptilolite-CaCa3(Si30Al6)O72·20H2OMon.
Clinoptilolite-NaNa6(Si30Al6)O72·20H2OMon. 2/m : B2/m
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
Eudialyte Group6 photos of Clinoptilolite-K associated with Eudialyte Group on mindat.org.
Chabazite-Ca5 photos of Clinoptilolite-K associated with Chabazite-Ca on mindat.org.
Lovozerite Group4 photos of Clinoptilolite-K associated with Lovozerite Group on mindat.org.
Ferrierite-Mg4 photos of Clinoptilolite-K associated with Ferrierite-Mg on mindat.org.
Microcline3 photos of Clinoptilolite-K associated with Microcline on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.GE.05Clinoptilolite-CaCa3(Si30Al6)O72·20H2OMon.
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-Na(Na,Ca,K)6(Si,Al)36O72 · 22H2OMon. 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] · 5H2O

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 Clinoptilolite-KHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Koyama, K. & Y. Takeuchi (1977), Clinoptilolite: The distribution of potassium atoms and its role in thermal stability: Zeitschrift für Kristallographie: 145: 216-239.
Tschermaks Mineralogische und Petrographische Mitteilungen: 18: 129-146.
Armbruster, T. (1993), Dehydration mechanism of clinoptilolite and heulandite: Single-crystal X-ray study of Na-poor, Ca-, K-, Mg-rich clinoptilolite at 100K: American Mineralogist: 78: 260-264.
Fahri Esenli and Isik Kumbasar (1998) X-Ray Diffraction Intensity Ratios I(111)//(311) of Natural Heulandites and Clinoptilolites, Clays and Clay Minerals, Vol. 46, No. 6, 679-686, 1998.
Johnson, M., O'Connor, D., Barnes, P., Catlow, C. R. A., Owens, S. L., Sankar, G., Bell, R., Teat, S. J. and Stephenson, R. (2003): Cation exchange, dehydration, and calcination in clinoptilolite: in situ X-ray diffraction and computer modeling. J. Phys. Chem. B, 107, 942-951.
Snellings, R.A., Gualtieri, A.F., Elsen, J. (2009): The Rietveld structure refinement of an exceptionally pure sample of clinoptilolite from Ecuador and its Na-, K-, and Ca-exchanged forms. Zeitschrift für Kristallographie Supplements, 30, 395-40

Internet Links for Clinoptilolite-KHide

Localities for Clinoptilolite-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.
Bulgaria
 
  • Kardzhali Oblast (Kurdzhali; Kărdžali; Kurdjali)
    • Momchilgrad Obshtina
Encheva, S., Petrov, P., Chukanov, N., Pekov, I., Енчева, С., Петко, П., ... & Пеков, И. Dachiardite-K from the area of Austa village, Momchilgrad municipality, Eastern Rhodopes–a new mineral species of zeolite group Дакиардит-K от района на с. Ауста, община Момчилград, Източни Родопи–нов минерален вид от групата на зеолитите.
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Tillet collection
China
 
  • Heilongjiang Province (Manchuria; Dongbei Region)
    • Mudanjiang Prefecture
      • Muling Co.
Shouting Zhang, Pengda Zhao, Zhanzhang Xu, and Gengdong Yang (2004): Mineral Deposits 23(1), 31-38
Czech Republic
 
  • Moravia (Mähren; Maehren)
    • Moravia-Silesia Region
      • Příbor
Peter Fuchs
Hungary
 
  • Borsod-Abaúj-Zemplén Co.
    • Zemplén Mts (Tokaj Mts)
      • Rátka
WDS - Norbert Zajzon
Japan
 
  • Honshu Island
    • Tohoku Region
      • Yamagata Prefecture
        • Yonezawa City
Minato & Takano (1964) Nendo Kagaku, 4, 12-22.
Russia
 
  • Far-Eastern Region
    • Kamchatka Oblast'
Pavel M. Kartashov analytical data (1984)
USA
 
  • California
    • Los Angeles Co.
      • Santa Monica Mts
RRUFF database specimen no.R110201
  • Idaho
Altaner,Stephan P. and Grim,Ralph E.(1990) Mineralogy,Chemistry,And Diagenesis Of Tuffs In The Sucker Creek Formation (Miocene) Eastern Oregon; Clays and Clay Minerals,Vol.38,No.6,pp.561-572,pg 563, Section E.
  • Oregon
Altaner,Stephan P.and Grim,Ralph E.(1990) Mineralogy ,Chemistry,And Diagenesis Of Tuffs In The Sucker Creek Formation(Miocene),Eastern Oregon:Clays and Clay Minerals ,Vol.38,No.6,pp.561-572
  • Wyoming
    • Park Co.
Am Min (1938) 17:128-134; Am. J. Sci. (1890) 40:232; PIRSSON, L.V. (1890): On mordenite. Am. J. Sci. 140, 232-237.
Mineral and/or Locality  
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