Ferrierite-K
A valid IMA mineral species
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About Ferrierite-K
Walter F. Ferrier
Formula:
(K,Na)5(Si31Al5)O72 · 18H2O
Lustre:
Vitreous
Hardness:
3 - 3½
Crystal System:
Orthorhombic
Member of:
Name:
Named in 1997 by Coombs et al., during a reorganization of zeolite species, for being potassium-dominant ferrierite. The root name is for Walter Frederick Ferrier [4 May 1865 Montréal, Québec, Canada – 15 November 1950 Toronto, York County, Ontario, Canada], mineralogist, mining engineer, and geologist with the Geological Survey of Canada.
Type Locality:
This page provides mineralogical data about Ferrierite-K.
Unique Identifiers
Mindat ID:
6930
Long-form identifier:
mindat:1:1:6930:0
Similar Names
| Ferrierite | A synonym of Ferrierite Subgroup |
IMA Classification of Ferrierite-K
Approved
IMA Formula:
(K,Na)5(Si31Al5)O72·18H2O
First published:
1976
Classification of Ferrierite-K
9.GD.50
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
D : Chains of 6-membered rings – tabular zeolites
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
D : Chains of 6-membered rings – tabular zeolites
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Frr-K | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Ferrierite-K
Vitreous
Hardness:
3 - 3½ on Mohs scale
Optical Data of Ferrierite-K
Type:
Biaxial (+/-)
RI values:
nα = 1.473 - 1.489 nβ = 1.474 - 1.489 nγ = 1.477 - 1.492
Max. Birefringence:
δ = 0.003 - 0.004
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate (negative)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Dispersion:
weak
Chemistry of Ferrierite-K
Mindat Formula:
(K,Na)5(Si31Al5)O72 · 18H2O
Element Weights:
Crystallography of Ferrierite-K
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Immm
Setting:
Immm
Cell Parameters:
a = 18.973(7) Å, b = 14.140(6) Å, c = 7.478(4) Å
Ratio:
a:b:c = 1.342 : 1 : 0.529
Unit Cell V:
2,006.18 ų (Calculated from Unit Cell)
Z:
1
Comment:
Cell parameters from Wise and Tschernich 1976 sample #3.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3a: Earth’s earliest Hadean crust | >4.50 |
| 10 : Basalt-hosted zeolite minerals | |
| Stage 3b: Earth’s earliest hydrosphere | >4.45 |
| 16 : Low-? aqueous alteration of Hadean subaerial lithologies (see also #23) | |
| Near-surface Processes | |
| 22 : Hydration and low-? subsurface aqueous alteration (see also #23) |
Type Occurrence of Ferrierite-K
Place of Conservation of Type Material:
Type material conservation not recorded. Type specimen was Wise and Tschernich 1976 sample #3.
Other Language Names for Ferrierite-K
Relationship of Ferrierite-K to other Species
Member of:
Other Members of Ferrierite Subgroup:
| Ferrierite-Mg | [Mg2(K,Na)2Ca0.5](Si29Al7)O72 · 18H2O | Orth. mmm(2/m2/m2/m) : Pnnm |
| Ferrierite-Na | (Na,K)5(Si31Al5)O72 · 18H2O | Mon. 2/m |
| Ferrierite-NH4 | (NH4,Mg0.5)5(Al5Si31O72) · 22H2O | Orth. mmm(2/m2/m2/m) : Immm |
Common Associates
Associations Based on Photo Data:
| 9 photos of Ferrierite-K associated with Clinoptilolite Subgroup | (Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O |
| 2 photos of Ferrierite-K associated with Saponite | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
| 2 photos of Ferrierite-K associated with 'Chalcedony' | SiO2 |
| 1 photo of Ferrierite-K associated with Dolomite | CaMg(CO3)2 |
| 1 photo of Ferrierite-K associated with Opal | SiO2 · nH2O |
| 1 photo of Ferrierite-K associated with Siderite | FeCO3 |
| 1 photo of Ferrierite-K associated with Pyrite | FeS2 |
| 1 photo of Ferrierite-K associated with Sphalerite | ZnS |
Related Minerals - Strunz-mindat Grouping
| 9.GD.05 | Gmelinite-Ca | Ca2(Si8Al4)O24 · 11H2O |
| 9.GD.05 | Gmelinite-K | K4(Si8Al4O24) · 11H2O |
| 9.GD.05 | Gmelinite-Na | Na4(Si8Al4)O24 · 11H2O |
| 9.GD.10 | Chabazite-Mg | (Mg0.7K0.5Ca0.5Na0.1)[Al3Si9O24] · 10H2O |
| 9.GD.10 | Willhendersonite | KCa[Al3Si3O12] · 5H2O |
| 9.GD.10 | Chabazite-Ca | (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O |
| 9.GD.10 | Chabazite-K | (K2,Ca,Na2,Sr,Mg)2[Al2Si4O12]2 · 12H2O |
| 9.GD.10 | Chabazite-Na | (Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O |
| 9.GD.10 | Chabazite-Sr | Sr2[Al2Si4O12]2 · 12H2O |
| 9.GD.15 | Lévyne-Ca | (Ca,Na2,K2)[Al2Si4O12] · 6H2O |
| 9.GD.15 | Lévyne-Na | (Na2,Ca,K2)[Al2Si4O12] · 6H2O |
| 9.GD.20 | Erionite-Ca | (Ca,K2,Na2)2[Al4Si14O36] · 15H2O |
| 9.GD.20 | Erionite-K | (K2,Ca,Na2)2[Al4Si14O36] · 15H2O |
| 9.GD.20 | Erionite-Na | (Na2,K2,Ca)2[Al4Si14O36] · 15H2O |
| 9.GD.20 | Bellbergite | (K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6 · 30H2O |
| 9.GD.25 | Offretite | KCaMg(Si13Al5)O36 · 15H2O |
| 9.GD.25 | Wenkite | (Ba,K)4(Ca,Na)6[(Si,Al)20O39(OH)2](SO4)3 · 0.5H2O |
| 9.GD.30 | Faujasite-Ca | (Ca,Na2,Mg)3.5[Al7Si17O48] · 32H2O |
| 9.GD.30 | Faujasite-Mg | (Mg,Na2,Ca)3.5[Al7Si17O48] · 32H2O |
| 9.GD.30 | Faujasite-Na | (Na2,Ca,Mg)3.5[Al7Si17O48] · 32H2O |
| 9.GD.35 | Maricopaite | Pb7Ca2(Si,Al)48O100 · 32H2O |
| 9.GD.35 | Mordenite | (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O |
| 9.GD.40 | Dachiardite-K | K4(Si20Al4O48) · 13H2O |
| 9.GD.40 | Dachiardite-Ca | (Ca,Na2,K2)5Al10Si38O96 · 25H2O |
| 9.GD.40 | Dachiardite-Na | (Na2,Ca,K2)5Al10Si38O96 · 25H2O |
| 9.GD.45 | Epistilbite | CaAl2Si6O16 · 5H2O |
| 9.GD.50 | Ferrierite-Mg | [Mg2(K,Na)2Ca0.5](Si29Al7)O72 · 18H2O |
| 9.GD.50 | Ferrierite-Na | (Na,K)5(Si31Al5)O72 · 18H2O |
| 9.GD.50 | Ferrierite-NH4 | (NH4,Mg0.5)5(Al5Si31O72) · 22H2O |
| 9.GD.55 | Bikitaite | LiAlSi2O6 · H2O |
Radioactivity
Other Information
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 Ferrierite-K
mindat.org URL:
https://www.mindat.org/min-6930.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Ferrierite-K
Reference List:
Wise, William S., Tschernich, R. W. (1976) Chemical composition of ferrierite. American Mineralogist, 61 (1-2) 60-66
Alberti, Alberto, Sabelli, Cesare (1987) Statistical and true symmetry of ferrierite: possible absence of straight Τ—Ο—Τ bridging bonds. Zeitschrift für Kristallographie, 178 (1-4). 249-256 doi:10.1524/zkri.1987.178.14.249
Coombs, Douglas S., Alberti, Alberto, Armbruster, Thomas, Artioli, Gilberto, Colella, Carmine, Galli, Ermanno, Grice, Joel D., Liebau, Friedrich, Mandarino, Joseph A., Minato, Hideo, et al. (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 Ferrierite-K
Showing 10 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Bulgaria | |
| Encheva |
Japan | |
| Matsubara & Miyawaki (2006) |
| Akira Harada specimens | |
USA | |
| Collected by M.Chorazewicz (2014) |
| DeVito (1997) | |
| Carnahan (1968) +7 other references | |
| Housley (1995) | |
| Housley (1995) | |
| Coombs et al. (1997) |
| Gladwell (2022) |
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Kanan Road Quarry, Agoura Hills, Los Angeles County, California, USA