Mazzite-Mg
A valid IMA mineral species
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About Mazzite-Mg
Fiorenzo Mazzi
Formula:
(Mg,K,Ca)5(Si26Al10)O72 · 28H2O
Colour:
Colorless
Lustre:
Vitreous
Hardness:
4 - 5
Specific Gravity:
2.11 (Calculated)
Crystal System:
Hexagonal
Member of:
Name:
Named in 1974 in honor of Fiorenzo Mazzi (1924 Forence, Italy - 25 September 2017, Pavia, Italy), Professor of Mineralogy at the University of Pavia, Italy for his contributions to the understanding of zeolite structure.
Originally called simply mazzite, the discovery of sodium-dominant mazzite promoted the name mazzite to a series and this species became mazzite-Mg.
Originally called simply mazzite, the discovery of sodium-dominant mazzite promoted the name mazzite to a series and this species became mazzite-Mg.
Unique Identifiers
Mindat ID:
2607
Long-form identifier:
mindat:1:1:2607:5
IMA Classification of Mazzite-Mg
Approved
IMA Formula:
Mg5(Si26Al10)O72·30H2O
First published:
1974
Classification of Mazzite-Mg
9.GC.20
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
C : Chains of doubly-connected 4-membered rings
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
C : Chains of doubly-connected 4-membered rings
16.10.28
16 : Silicates Containing Aluminum and other Metals
10 : Aluminosilicates of Ca and alkalis
16 : Silicates Containing Aluminum and other Metals
10 : Aluminosilicates of Ca and alkalis
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 |
|---|---|---|
| Maz-Mg | 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 Mazzite-Mg
Vitreous
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
4 - 5 on Mohs scale
Density:
2.11 g/cm3 (Calculated)
Optical Data of Mazzite-Mg
Type:
Uniaxial (-)
RI values:
nω = 1.5062 nε = 1.499
Max. Birefringence:
δ = 0.007
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
Chemistry of Mazzite-Mg
Mindat Formula:
(Mg,K,Ca)5(Si26Al10)O72 · 28H2O
Element Weights:
Common Impurities:
Na
Crystallography of Mazzite-Mg
Crystal System:
Hexagonal
Class (H-M):
6/mmm(6/m2/m2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mmc
Cell Parameters:
a = 18.392 Å, c = 7.646 Å
Ratio:
a:c = 1 : 0.416
Unit Cell V:
2,239.87 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Extremely slender hexagonal prisms terminated by pinacoids.
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0017692 | Mazzite-Mg | Galli E (1975) Crystal structure refinement of mazzite Rendiconti della Societa Italiana di Mineralogia e Petrologia 31 599-612 | 1975 | Mont Semiol, Montbrison, Loire, France | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 15.93 Å | (35) |
| 9.20 Å | (60) |
| 7.96 Å | (35) |
| 6.89 Å | (25) |
| 6.02 Å | (53) |
| 4.729 Å | (50) |
| 3.824 Å | (95) |
| 3.655 Å | (47) |
| 3.531 Å | (90) |
| 3.185 Å | (100) |
| 3.102 Å | (30) |
| 3.065 Å | (38) |
| 3.010 Å | (40) |
| 2.941 Å | (100) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3a: Earth’s earliest Hadean crust | >4.50 |
| 10 : Basalt-hosted zeolite minerals |
Type Occurrence of Mazzite-Mg
General Appearance of Type Material:
Needles; hexagonal prisms up to 1.5 mm long but only 20 um across. In bundles/sprays.
Place of Conservation of Type Material:
University of Modena, Modena, Italy.
National Museum of Natural History (SMithsonian), Washington, D.C., USA, 128520.
National Museum of Natural History (SMithsonian), Washington, D.C., USA, 128520.
Geological Setting of Type Material:
Olivine basalt
Associated Minerals at Type Locality:
Other Language Names for Mazzite-Mg
Relationship of Mazzite-Mg to other Species
Member of:
Other Members of Mazzite Subgroup:
| Mazzite-Na | Na8[Al4Si14O36]2 · 30H2O | Hex. 6/mmm(6/m2/m2/m) : P63/mmc |
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 9.GC. | Gismondine-Sr | Sr4(Si8Al8O32) · 9H2O |
| 9.GC. | Garronite-Na | Na6(Al6Si10O32) · 8.5H2O |
| 9.GC.05 | 'Gismondine-Ba' | Ba2Al4Si4O16 · 4-6H2O |
| 9.GC.05 | Garronite-Ca | Na2Ca5Al12Si20O64 · 27H2O |
| 9.GC.05 | Gismondine-Ca | CaAl2Si2O8 · 4H2O |
| 9.GC.05 | Gobbinsite | Na5(Si11Al5)O32 · 11H2O |
| 9.GC.05 | Amicite | K2Na2Al4Si4O16 · 5H2O |
| 9.GC.10 | Martinandresite | Ba2(Al4Si12O32) · 10H2O |
| 9.GC.10 | Harmotome | Ba2(Si12Al4)O32 · 12H2O |
| 9.GC.10 | Phillipsite-Ca | Ca3(Si10Al6)O32 · 12H2O |
| 9.GC.10 | Phillipsite-K | K6(Si10Al6)O32 · 12H2O |
| 9.GC.10 | Phillipsite-Na | (Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] · 12H2O |
| 9.GC.10 | Flörkeite | (K3Ca2Na)[Al8Si8O32] · 12H2O |
| 9.GC.15 | Merlinoite | K5Ca2(Si23Al9)O64 · 24H2O |
| 9.GC.20 | Mazzite-Na | Na8[Al4Si14O36]2 · 30H2O |
| 9.GC.25 | Perlialite | K9Na(Ca,Sr)[Al2Si4O12]6 · 15H2O |
| 9.GC.30 | Boggsite | Ca8Na3(Si,Al)96O192 · 70H2O |
| 9.GC.35 | Paulingite-Ca | (Ca,K,Na,Ba, ◻)10 (Si, Al)42O84 · 34H2O |
| 9.GC.35 | Paulingite-K | (K2,Ca,Na2,Ba)5[Al10Si35O90] · 45H2O |
| 9.GC.35 | 'Paulingite-Na' | (Na2,K2,Ca,Ba)5[Al10Si35O90] · 45H2O |
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 Mazzite-Mg
mindat.org URL:
https://www.mindat.org/min-2607.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Mazzite-Mg
Reference List:
Galli, E., Passaglia, E., Pongiluppi, D., Rinaldi, R. (1974) Mazzite, a new mineral, the natural counterpart of the synthetic zeolite Ω. Contributions to Mineralogy and Petrology, 45 (2). 99-105 doi:10.1007/bf00371162
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 Mazzite-Mg
Showing 2 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.
France (TL) | |
| Galli et al. (1974) +1 other reference |
Germany | |
|
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Mont Semiol, Châtelneuf, Montbrison, Loire, Auvergne-Rhône-Alpes, France