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Ferrierite-Mg

A valid IMA mineral species - grandfathered
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About Ferrierite-MgHide

03331850017271923163465.jpg
Walter F. Ferrier
Formula:
[Mg2(K,Na)2Ca0.5](Si29Al7)O72 · 18H2O
Colour:
White, colorless, pinkish, orange to red
Lustre:
Vitreous
Hardness:
3 - 3½
Specific Gravity:
2.136
Crystal System:
Orthorhombic
Name:
Named ferrierite in 1918 by Richard Percival Devereux Graham in honor of 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, who first collected the material on the north shore of Kamloops Lake, British Columbia, Canada. The suffix was added in 1997 (Coombs et al.) to denote dominant magnesium.
This page provides mineralogical data about Ferrierite-Mg.


Unique IdentifiersHide

Mindat ID:
6931
Long-form identifier:
mindat:1:1:6931:7

IMA Classification of Ferrierite-MgHide

Approved, 'Grandfathered' (first described prior to 1959)
IMA status notes:
Renamed by the IMA
IMA Formula:
[Mg2(K,Na)2Ca0.5](Si29Al7)O72·18H2O
First published:
1918

Classification of Ferrierite-MgHide

9.GD.50

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
Frr-MgIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of Ferrierite-MgHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
White, colorless, pinkish, orange to red
Streak:
White
Hardness:
3 - 3½ on Mohs scale
Cleavage:
Perfect
on {100}
Density:
2.136 g/cm3 (Measured)    2.11 g/cm3 (Calculated)

Optical Data of Ferrierite-MgHide

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.

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.

Surface Relief:
Moderate
Dispersion:
weak

Chemistry of Ferrierite-MgHide

Mindat Formula:
[Mg2(K,Na)2Ca0.5](Si29Al7)O72 · 18H2O
Element Weights:
Element% weight
O55.247 %
Si31.249 %
Al7.247 %
K3.000 %
Mg1.865 %
H1.392 %
Ca0.000 %

Calculated from ideal end-member formula.

Crystallography of Ferrierite-MgHide

Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Pnnm
Setting:
Pnnm
Cell Parameters:
a = 19.231(2) Å, b = 14.145(2) Å, c = 7.499(1) Å
Ratio:
a:b:c = 1.36 : 1 : 0.53
Unit Cell V:
2,039.90 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Radiating groups of lath shaped crystals.
Comment:
Cell parameters from Alberti and Sabelli, 1987.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0010964Ferrierite-MgAlberti A, Sabelli C (1987) Statistical and true symmetry of ferrierite: possible absence of straight T-O-T bridging bonds Zeitschrift fur Kristallographie 178 249-2561987Monastir, Sardinia, Italy0293
0017696Ferrierite-MgVaughan P A (1966) The crystal structure of the zeolite ferrierite Acta Crystallographica 21 983-9901966Kamloops Lake, British Columbia, Canada0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.56 Å(80)
3.99 Å(29)
3.971 Å(60)
3.794 Å(55)
3.700 Å(37)
3.533 Å(100)
3.489 Å(50)
Comments:
Sonora Pass, California, USA. The data are from Wise et al. (1969).

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest 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)
Geological Setting:
Seams and vesicles in extrusive igneous rocks.

Type Occurrence of Ferrierite-MgHide

Place of Conservation of Type Material:
Geological Survey of Canada, Ottawa, Ontario, Canada, number NMCC 060325.
McGill University, Redpath Museum, Montreal, Quebec, Canada, number RM F3903 T.
Natural History Museum, London, United Kingdom, numbers BM 1930, 1008-1009 / BM 1919, 147-148.

Other Language Names for Ferrierite-MgHide

Relationship of Ferrierite-Mg to other SpeciesHide

Other Members of Ferrierite Subgroup:
Ferrierite-K(K,Na)5(Si31Al5)O72 · 18H2OOrth. mmm(2/m2/m2/m) : Immm
Ferrierite-Na(Na,K)5(Si31Al5)O72 · 18H2OMon. 2/m
Ferrierite-NH4(NH4,Mg0.5)5(Al5Si31O72) · 22H2OOrth. mmm(2/m2/m2/m) : Immm

Common AssociatesHide

Associations Based on Photo Data:
34 photos of Ferrierite-Mg associated with Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
30 photos of Ferrierite-Mg associated with CalciteCaCO3
19 photos of Ferrierite-Mg associated with 'Chalcedony'SiO2
17 photos of Ferrierite-Mg associated with Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
6 photos of Ferrierite-Mg associated with QuartzSiO2
3 photos of Ferrierite-Mg associated with 'Carbonate-rich Hydroxylapatite'Ca5(PO4,CO3)3(OH,O)
3 photos of Ferrierite-Mg associated with Clinoptilolite-KK6(Si30Al6)O72 · 20H2O
2 photos of Ferrierite-Mg associated with AnalcimeNa(AlSi2O6) · H2O
2 photos of Ferrierite-Mg associated with Clinoptilolite-CaCa3(Si30Al6)O72 · 20H2O
2 photos of Ferrierite-Mg associated with HarmotomeBa2(Si12Al4)O32 · 12H2O

Related Minerals - Strunz-mindat GroupingHide

9.GD.05Gmelinite-CaCa2(Si8Al4)O24 · 11H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
9.GD.05Gmelinite-KK4(Si8Al4O24) · 11H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
9.GD.05Gmelinite-NaNa4(Si8Al4)O24 · 11H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
9.GD.10Chabazite-Mg(Mg0.7K0.5Ca0.5Na0.1)[Al3Si9O24] · 10H2O Trig. 3m(32/m) : R3m
9.GD.10WillhendersoniteKCa[Al3Si3O12] · 5H2OTric. 1 : P1
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 · 12H2OTrig. 3m(32/m) : R3m
9.GD.10Chabazite-Na(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2OTrig. 3m : R3m
9.GD.10Chabazite-SrSr2[Al2Si4O12]2 · 12H2OTrig. 3m(32/m) : R3m
9.GD.15Lévyne-Ca(Ca,Na2,K2)[Al2Si4O12] · 6H2OTrig. 3m(32/m) : R3m
9.GD.15Lévyne-Na(Na2,Ca,K2)[Al2Si4O12] · 6H2OTrig. 3m(32/m) : R3m
9.GD.20Erionite-Ca(Ca,K2,Na2)2[Al4Si14O36] · 15H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
9.GD.20Erionite-K(K2,Ca,Na2)2[Al4Si14O36] · 15H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
9.GD.20Erionite-Na(Na2,K2,Ca)2[Al4Si14O36] · 15H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
9.GD.20Bellbergite(K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6 · 30H2OHex.
9.GD.25OffretiteKCaMg(Si13Al5)O36 · 15H2OHex. 6m2 : P6m2
9.GD.25Wenkite(Ba,K)4(Ca,Na)6[(Si,Al)20O39(OH)2](SO4)3 · 0.5H2OHex. 6m2 : P62m
9.GD.30Faujasite-Ca(Ca,Na2,Mg)3.5[Al7Si17O48] · 32H2OIso. m3m(4/m32/m) : Fd3m
9.GD.30Faujasite-Mg(Mg,Na2,Ca)3.5[Al7Si17O48] · 32H2OIso. m3m(4/m32/m) : Fd3m
9.GD.30Faujasite-Na(Na2,Ca,Mg)3.5[Al7Si17O48] · 32H2OIso. m3m(4/m32/m) : Fd3m
9.GD.35MaricopaitePb7Ca2(Si,Al)48O100 · 32H2OOrth.
9.GD.35Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2OOrth.
9.GD.40Dachiardite-KK4(Si20Al4O48) · 13H2OMon.
9.GD.40Dachiardite-Ca(Ca,Na2,K2)5Al10Si38O96 · 25H2OMon. 2/m : B2/m
9.GD.40Dachiardite-Na(Na2,Ca,K2)5Al10Si38O96 · 25H2OMon. 2/m : B2/m
9.GD.45EpistilbiteCaAl2Si6O16 · 5H2OMon.
9.GD.50Ferrierite-K(K,Na)5(Si31Al5)O72 · 18H2OOrth. mmm(2/m2/m2/m) : Immm
9.GD.50Ferrierite-Na(Na,K)5(Si31Al5)O72 · 18H2OMon. 2/m
9.GD.50Ferrierite-NH4(NH4,Mg0.5)5(Al5Si31O72) · 22H2OOrth. mmm(2/m2/m2/m) : Immm
9.GD.55BikitaiteLiAlSi2O6 · H2OTric. 1 : P1

RadioactivityHide

Radioactivity:
Element % Content Activity (Bq/kg) Radiation Type
Uranium (U) 0.0000% 0 α, β, γ
Thorium (Th) 0.0000% 0 α, β, γ
Potassium (K) 3.0002% 930 β, γ

For comparison:

  • Banana: ~15 Bq per fruit
  • Granite: 1,000–3,000 Bq/kg
  • EU exemption limit: 10,000 Bq/kg

Note: Risk is shown relative to daily recommended maximum exposure to non-background radiation of 1000 µSv/year. Note that natural background radiation averages around 2400 µSv/year so in reality these risks are probably extremely overstated! With infrequent handling and safe storage natural radioactive minerals do not usually pose much risk.

Interactive Simulator:

Note: The mass selector refers to the mass of radioactive mineral present, not the full specimen, also be aware that the matrix may also be radioactive, possibly more radioactive than this mineral!

Activity:

DistanceDose rateRisk
1 cm
10 cm
1 m

The external dose rate (D) from a radioactive mineral is estimated by summing the gamma radiation contributions from its Uranium, Thorium, and Potassium content, disregarding daughter-product which may have a significant effect in some cases (eg 'pitchblende'). This involves multiplying the activity (A, in Bq) of each element by its specific gamma ray constant (Γ), which accounts for its unique gamma emissions. The total unshielded dose at 1 cm is then scaled by the square of the distance (r, in cm) and multiplied by a shielding factor (μshield). This calculation provides a 'worst-case' or 'maximum risk' estimate because it assumes the sample is a point source and entirely neglects any self-shielding where radiation is absorbed within the mineral itself, meaning actual doses will typically be lower. The resulting dose rate (D) is expressed in microsieverts per hour (μSv/h).

D = ((AU × ΓU) + (ATh × ΓTh) + (AK × ΓK)) / r2 × μshield

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.

Internet Links for Ferrierite-MgHide

References for Ferrierite-MgHide

Reference List:

Localities for Ferrierite-MgHide

Showing 42 localities.

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.
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Locality ListHide

- 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). 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Australia
 
  • New South Wales
    • Camden County
      • Cringila
Keith F Compton collection
      • Unanderra
England et al. (1978)
  • Victoria
    • Bass Coast Shire
Birch (1989)
Austria
 
  • Carinthia
    • Sankt Veit an der Glan District
      • Hüttenberg
        • Hüttenberger Erzberg
J. Mörtl et al. (2003)
    • Wolfsberg District
      • Wolfsberg
C. Auer (2023)
  • Styria
    • Bruck-Mürzzuschlag District
      • Kapfenberg
Auer (2026)
    • Deutschlandsberg District
      • Eibiswald
        • Radl pass
Dietmar Jakely (2012)
    • Leibnitz District
      • Wildon
        • Weitendorf
Zirkl (1973) +1 other reference
Bulgaria
 
  • Kardzhali Province
    • Momchilgrad Municipality
Tschernich (1992)
Encheva
Canada (TL)
 
  • British Columbia
    • Kamloops Mining Division
Graham (1918) +2 other references
Tschernich (1992)
      • Westwold
Tschernich (1992)
    • Omineca Mining Division
      • Francois Lake
Tschernich (1992)
Czech Republic
 
  • Moravian-Silesian Region
    • Nový Jičín District
      • Skotnice
Smutný (1997)
  • Pardubice Region
    • Pardubice District
PAULIŠ et al. (2022)
Germany
 
  • Lower Saxony
    • Goslar District
      • Harz (Landkreis Goslar)
Baumgärtl (2014)
Hungary
 
  • Borsod-Abaúj-Zemplén County
    • Gönc District
      • Regéc
Christophe Boutry collection
Italy
 
  • Lazio
    • Viterbo Province
Ion Microprobe by Passaglia (Univ. Modena)
      • Viterbo
Ion Microprobe by Passaglia at Modena ...
  • Sardinia
    • South Sardinia Province
Orlandi et al. (1983) +1 other reference
Preite (2003)
Fabre (n.d.)
  • Veneto
    • Vicenza Province
Passaglia et al. (2010) +1 other reference
      • Recoaro Terme
        • Spitz Mountain
Passaglia et al. (2010)
      • San Pietro Mussolino
Passaglia et al. (2010)
      • Santorso
Alietti et al. (1967) +7 other references
      • Schio
Della Costa (2014) +1 other reference
        • Tretto
          • San Rocco di Tretto (San Rocco)
Boscardin et al. (2011) +2 other references
Della Costa (2014) +1 other reference
Passaglia et al. (2010) +1 other reference
Passaglia et al. (2010) +2 other references
      • Torrebelvicino
        • Mercanti Valley
Passaglia et al. (2010)
      • Valdagno
        • Campotamaso
Passaglia et al. (2010)
      • Velo d'Astico
Daleffe et al. (1997) +3 other references
Japan
 
  • Hokkaidō Prefecture
    • Okhotsk Subprefecture
      • Monbetsu City
Yamada (1997)
Mineralogical Journal Vol. 18 (1996)
      • Tokoro District
Yajima et al (1971)
Portugal
 
  • Lisbon
    • Odivelas
      • Ramada e Caneças
Pedro Alves analtycal data. Specimens ...
Slovakia
 
  • Košice Region
    • Trebišov District
Myšľan P et al. (2022)
Spain
 
  • Andalusia
    • Almería
      • Níjar
        • Cabo de Gata volcanic complex
Calvo Rebollar (2018)
USA
 
  • California
    • Los Angeles County
      • Agoura Hills
Houseley (2013)
 
and/or  
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