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Gmelinite-K

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About Gmelinite-KHide

Christian Gottlob Gmelin
Formula:
K4(Si8Al4O24) · 11H2O
Lustre:
Vitreous
Hardness:
Crystal System:
Hexagonal
Name:
Named after the German mineralogist and chemist, Christian Gottlob Gmelin (1792-1860) of Tübingen, Germany.
This page provides mineralogical data about Gmelinite-K.


Classification of Gmelinite-KHide

Approved
9.GD.05

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

Physical Properties of Gmelinite-KHide

Vitreous
Hardness:
4½ on Mohs scale

Optical Data of Gmelinite-KHide

Type:
Uniaxial (+/-)
RI values:
nα = 1.472 nβ = 1.477
Max Birefringence:
δ = 1.472
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of Gmelinite-KHide

Formula:
K4(Si8Al4O24) · 11H2O
IMA Formula:
K4(Si8Al4)O24 · 11H2O

Crystallography of Gmelinite-KHide

Crystal System:
Hexagonal

Type Occurrence of Gmelinite-KHide

Synonyms of Gmelinite-KHide

Other Language Names for Gmelinite-KHide

Simplified Chinese:钾菱沸石

Common AssociatesHide

Associated Minerals Based on Photo Data:
Analcime14 photos of Gmelinite-K associated with Analcime on mindat.org.
Chabazite-Ca8 photos of Gmelinite-K associated with Chabazite-Ca on mindat.org.
Ussingite5 photos of Gmelinite-K associated with Ussingite on mindat.org.
Thomsonite-Ca4 photos of Gmelinite-K associated with Thomsonite-Ca on mindat.org.
Serandite3 photos of Gmelinite-K associated with Serandite on mindat.org.
Vuonnemite3 photos of Gmelinite-K associated with Vuonnemite on mindat.org.
Natrolite3 photos of Gmelinite-K associated with Natrolite on mindat.org.
Umbozerite2 photos of Gmelinite-K associated with Umbozerite on mindat.org.
Belovite-(Ce)2 photos of Gmelinite-K associated with Belovite-(Ce) on mindat.org.
Neotocite1 photo of Gmelinite-K associated with Neotocite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.GD.05Gmelinite-CaCa2(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-K(K2,Ca,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:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Gmelinite-KHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 130(3): 65-71.

Internet Links for Gmelinite-KHide

Localities for Gmelinite-KHide

ⓘ - 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.
Italy
 
  • Veneto
    • Vicenza Province
Neues Jahrb. Mineral., Monatsh., 504; Can. Mineral. (1997) 35, 1571
        • San Giorgio di Perlena
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
Rivista Mineralogica Italiana vol.17 fasc.2 1994,pp.131-136 Studi e Ricerche Associazione Amici del Museo- Museo Civico "G.Zannato" Montecchio Maggiore (VI) 18 Dicembre 1997,pp. 45-48
Russia (TL)
 
  • Murmansk Oblast
    • Lovozero Massif
ZVMO (2001) 130/3, 65-71; Pekov, I.V. (2000): Lovozero Massif. Moscow, Ocean Pictures Ltd, 480 pp.
        • Umbozero mine (Umbozerskii mine; Umba Mine)
Pavel M. Kartashov analytical data
      • Malyi Punkaruaiv Mt
Tony Nikischer
Spain
 
  • Canary Islands
    • Las Palmas Province
      • Gran Canaria (Grand Canary)
Zeolite collection of Volker Betz
Mineral and/or Locality  
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