Gmelinite-K (original) (raw)
A valid IMA mineral species
About Gmelinite-KHide
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Formula:
K4(Si8Al4O24) · 11H2O
Colour:
Colorless to brownish
Name:
Named after the German mineralogist and chemist, Christian Gottlob Gmelin (1792-1860) of Tübingen, Germany. The suffix indicates the dominant extra-framework cation. In 1997, the name gmelinite (without suffix) was promoted from species to series and gmelinite-K was defined as one of several species.
This page provides mineralogical data about Gmelinite-K.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:6972:0
6a036a68-9235-4101-81a2-4612a315ed11
IMA Classification of Gmelinite-KHide
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IMA Formula:
K4(Si8Al4)O24 · 11H2O
Type description reference:
Coombs, Douglas S., Alberti, Alberto, Armbruster, Thomas, Artioli, Gilberto, Colella, Carmine, Galli, Ermanno, Grice, Joel D., Liebau, Friedrich, Mandarino, Joseph A., Minato, Hideo, Nickel, Ernest H., Passaglia, Elio, Peacor, Donald R., Quartieri, Simona, Rinaldi, Romano, Ross, Malcolm I., Sheppard, Richard A., Tillmanns, Ekkehart, Vezzalini, Giovanna (1997) Recommended nomenclature for zeolite minerals; report of the Subcommittee on Zeolites of the International Mineralogical Association, Commission on New Minerals and Mineral Names. The Canadian Mineralogist, 35 (6) 1571-1606
Classification of Gmelinite-KHide
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9.GD.05
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
D : Chains of 6-membered rings – tabular zeolites
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Gme-K | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Gme | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371 |
Physical Properties of Gmelinite-KHide
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Colour:
Colorless to brownish
Hardness:
VHN30=258 kg/mm2 - Vickers
Density:
2.00 g/cm3 (Measured) 2.04 g/cm3 (Calculated)
Optical Data of Gmelinite-KHide
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RI values:
_n_α = 1.472 _n_β = 1.477
δ = 1.472
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Pleochroism:
Non-pleochroic
Chemistry of Gmelinite-KHide
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Mindat Formula:
K4(Si8Al4O24) · 11H2O
Crystallography of Gmelinite-KHide
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Class (H-M):
6/m m m _(_6/_m_2/_m_2/m ) - Dihexagonal Dipyramidal
Cell Parameters:
a = 13.621(3) Å, c = 10.254(1) Å
Unit Cell V:
1,647.56 ų (Calculated from Unit Cell)
Morphology:
{100}, {101} and {001}.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0015872 | Gmelinite-K | Sacerdoti M, Passaglia E, Carnevali R (1995) Structural refinements of Na-, K-, and Ca-exchanged gmelinites Zeolites 15 276-281 | 1995 | Queensland, Australia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 11.9 Å | (80) |
| 5.16 Å | (70) |
| 4.11 Å | (100) |
| 3.27 Å | (70) |
| 2.971 Å | (80) |
| 2.852 Å | (80) |
| 2.719 Å | (100) |
Geological EnvironmentHide
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Type Occurrence of Gmelinite-KHide
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General Appearance of Type Material:
Granular and radial aggregates of columnar to acicular crystals up to 0.1 x 3 mm (Russia).
Geological Setting of Type Material:
Found in cavities within brecciated pegmatite (Russia).
Associated Minerals at Type Locality:
Reference:
Coombs, D. S., Alberti, A., Armbruster, T., Artioli, G., Colella, C., Galli, E., Grice, J. D., Liebau, F., Mandarino, J. A., Minato, H., Nickel, E. H., Passaglia, E., Peacor, D. R., Quartieri, S., Rinaldi, R., Ross. M., Sheppard, R. A., Tillmanns, E., Vezzalini, G. (1997) Recommended nomenclature for zeolite minerals: report of the Subcommittee on Zeolites of the International Mineralogical Association, Commission on New Minerals and Mineral Names. The Canadian Mineralogist 35, 1571-1606
Synonyms of Gmelinite-KHide
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Other Language Names for Gmelinite-KHide
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Relationship of Gmelinite-K to other SpeciesHide
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Other Members of this group:
| Gmelinite-Ca | Ca2(Si8Al4)O24 · 11H2O | Hex. 6/m m m _(_6/_m_2/_m_2/m ) : _P_63/m m c |
|---|---|---|
| Gmelinite-Na | Na4(Si8Al4)O24 · 11H2O | Hex. 6/m m m _(_6/_m_2/_m_2/m ) : _P_63/m m c |
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 9.GD.05 | Gmelinite-Ca | Ca2(Si8Al4)O24 · 11H2O | Hex. 6/m m m _(_6/_m_2/_m_2/m ) : _P_63/m m c |
|---|---|---|---|
| 9.GD.05 | Gmelinite-Na | Na4(Si8Al4)O24 · 11H2O | Hex. 6/m m m _(_6/_m_2/_m_2/m ) : _P_63/m m c |
| 9.GD.10 | Willhendersonite | KCa[Al3Si3O12] · 5H2O | Tric. 1 : _P_1 |
| 9.GD.10 | Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O | Tric. 1 : _P_1 |
| 9.GD.10 | Chabazite-K | (K2,Ca,Na2,Sr,Mg)2[Al2Si4O12]2 · 12H2O | Trig. 3_m_ _(_32/m ) : R_3_m |
| 9.GD.10 | Chabazite-Na | (Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O | Trig. 3_m_ : R_3_m |
| 9.GD.10 | Chabazite-Sr | Sr2[Al2Si4O12]2 · 12H2O | Trig. 3_m_ _(_32/m ) : R_3_m |
| 9.GD.10 | Chabazite-Mg | (Mg0.7K0.5Ca0.5Na0.1)[Al3Si9O24] · 10H2O | Trig. 3_m_ _(_32/m ) : R_3_m |
| 9.GD.15 | Lévyne-Ca | (Ca,Na2,K2)[Al2Si4O12] · 6H2O | Trig. 3_m_ _(_32/m ) : R_3_m |
| 9.GD.15 | Lévyne-Na | (Na2,Ca,K2)[Al2Si4O12] · 6H2O | Trig. 3_m_ _(_32/m ) : R_3_m |
| 9.GD.20 | Bellbergite | (K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6 · 30H2O | Hex. |
| 9.GD.20 | Erionite-Ca | (Ca,K2,Na2)2[Al4Si14O36] · 15H2O | Hex. 6/m m m _(_6/_m_2/_m_2/m ) : _P_63/m m c |
| 9.GD.20 | Erionite-K | (K2,Ca,Na2)2[Al4Si14O36] · 15H2O | Hex. 6/m m m _(_6/_m_2/_m_2/m ) : _P_63/m m c |
| 9.GD.20 | Erionite-Na | (Na2,K2,Ca)2[Al4Si14O36] · 15H2O | Hex. 6/m m m _(_6/_m_2/_m_2/m ) : _P_63/m m c |
| 9.GD.25 | Offretite | KCaMg(Si13Al5)O36 · 15H2O | Hex. 6_m_2 : _P_6_m_2 |
| 9.GD.25 | Wenkite | (Ba,K)4(Ca,Na)6[(Si,Al)20O39(OH)2](SO4)3 · 0.5H2O | Hex. 6_m_2 : P_62_m |
| 9.GD.30 | Faujasite-Ca | (Ca,Na2,Mg)3.5[Al7Si17O48] · 32H2O | Iso. m_3_m _(_4/_m_32/m ) : F d_3_m |
| 9.GD.30 | Faujasite-Mg | (Mg,Na2,Ca)3.5[Al7Si17O48] · 32H2O | Iso. m_3_m _(_4/_m_32/m ) : F d_3_m |
| 9.GD.30 | Faujasite-Na | (Na2,Ca,Mg)3.5[Al7Si17O48] · 32H2O | Iso. m_3_m _(_4/_m_32/m ) : F d_3_m |
| 9.GD.35 | Maricopaite | Pb7Ca2(Si,Al)48O100 · 32H2O | Orth. |
| 9.GD.35 | Mordenite | (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O | Orth. |
| 9.GD.40 | Dachiardite-K | K4(Si20Al4O48) · 13H2O | Mon. |
| 9.GD.40 | Dachiardite-Ca | (Ca,Na2,K2)5Al10Si38O96 · 25H2O | Mon. 2/m : _B_2/m |
| 9.GD.40 | Dachiardite-Na | (Na2,Ca,K2)5Al10Si38O96 · 25H2O | Mon. 2/m : _B_2/m |
| 9.GD.45 | Epistilbite | CaAl2Si6O16 · 5H2O | Mon. |
| 9.GD.50 | Ferrierite-K | (K,Na)5(Si31Al5)O72 · 18H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : I m m m |
| 9.GD.50 | Ferrierite-Mg | [Mg2(K,Na)2Ca0.5](Si29Al7)O72 · 18H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m |
| 9.GD.50 | Ferrierite-Na | (Na,K)5(Si31Al5)O72 · 18H2O | Mon. 2/m |
| 9.GD.50 | Ferrierite-NH4 | (NH4,Mg0.5)5(Al5Si31O72) · 22H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : I m m m |
| 9.GD.55 | Bikitaite | LiAlSi2O6 · H2O | Tric. 1 : _P_1 |
Fluorescence of Gmelinite-KHide
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Other InformationHide
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Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Gmelinite-KHide
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References for Gmelinite-KHide
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Reference List:
Coombs, Douglas S., Alberti, Alberto, Armbruster, Thomas, Artioli, Gilberto, Colella, Carmine, Galli, Ermanno, Grice, Joel D., Liebau, Friedrich, Mandarino, Joseph A., Minato, Hideo, Nickel, Ernest H., Passaglia, Elio, Peacor, Donald R., Quartieri, Simona, Rinaldi, Romano, Ross, Malcolm I., Sheppard, Richard A., Tillmanns, Ekkehart, Vezzalini, Giovanna (1997) Recommended nomenclature for zeolite minerals; report of the Subcommittee on Zeolites of the International Mineralogical Association, Commission on New Minerals and Mineral Names. The Canadian Mineralogist, 35 (6) 1571-1606
Localities for Gmelinite-KHide
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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
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