Yofortierite (original) (raw)
A valid IMA mineral species
About YofortieriteHide
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Formula:
Mn2+Mn2+2Mn2+2◻2Si8O20(OH)2(H2O)4 · 4H2O
Colour:
Pink to pale violet, brown
Crystal System:
Monoclinic
Name:
Named in honour of Yves Oscar Fortier (17 August 1914, Quebec City, Quebec, Canada - 19 August 2014, Ottawa, Ontario, Canada), Director of the Geological Survey of Canada (1964-1973), for his many contributions to Canadian geosciences.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:4364:5
7759ef63-0985-45c2-a154-3a53f87a7dfe
IMA Classification of YofortieriteHide
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IMA Formula:
Mn2+5Si8O20(OH)2 · 7H2O
Type description reference:
Classification of YofortieriteHide
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9.EE.20
9 : SILICATES (Germanates)
E : Phyllosilicates
E : Single tetrahedral nets of 6-membered rings connected by octahedral nets or octahedral bands
74.3.1a.3
74 : PHYLLOSILICATES Modulated Layers
3 : Modulated Layers with joined strips
14.17.10
14 : Silicates not Containing Aluminum
17 : Silicates of Mn
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 |
|---|---|---|
| Yof | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Yof | Warr (2020) | Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30 |
Physical Properties of YofortieriteHide
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Colour:
Pink to pale violet, brown
Density:
2.18 g/cm3 (Measured) 2.82 g/cm3 (Calculated)
Optical Data of YofortieriteHide
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RI values:
_n_α = 1.530 _n_γ = 1.559
δ = 0.029
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Optical Extinction:
X ∧ fiber axis = 8°.
Comments:
Absorption: Maximum ⊥ length of fibers.
Chemistry of YofortieriteHide
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Mindat Formula:
Mn2+Mn2+2Mn2+2◻2Si8O20(OH)2(H2O)4 · 4H2O
Common Impurities:
Ti,Al,Cr,Zn,Ca,K
Crystallography of YofortieriteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 14.1686 Å, b = 17.8583 Å, c = 5.2919 Å
β = 105.878°
Ratio:
a:b:c = 0.793 : 1 : 0.296
Morphology:
Radiating fibres, single crystals are thin, about 1 micron.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0019873 | Yofortierite | Hawthorne F C, Abdu Y A, Tait K T, Back M E (2013) The crystal structure of yofortierite The Canadian Mineralogist 51 243-251 | 2013 | Poudrette Quarry, Mont St. Hilaire, Quebec, Canada | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.5 Å | (100) |
| 3.302 Å | (90) |
| 2.621 Å | (30) |
| 2.510 Å | (20) |
| 4.14 Å | (18) |
Comments:
From type description, most important peaks.
Geological EnvironmentHide
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Type Occurrence of YofortieriteHide
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General Appearance of Type Material:
Place of Conservation of Type Material:
Ecole Polytechnique, Montreal, Canada.
Royal Ontario Museum, Toronto, Canada.
Canadian Museum of Nature, Ottawa, Ontario, Canada, number 37133.
British Museum of Natural History, London, UK, number BM 1975,418.
National Museum of Natural History (Smithsonian Institution), Washington, D.C., USA, number 131952.
Ecole des Mines, Paris, France, number 51122.
Universite de Paris, Paris, France.
Musee d'Histoire Naturelle, Paris, France, number 178118.
Geological Setting of Type Material:
A late-stage hydrothermal mineral in pegmatite veins in nepheline syenite.
Associated Minerals at Type Locality:
Reference:
Perrault, G., Harvey, Y., and Pertsowsky, R (1975) La yofortierite, un nouveau silicate hydraté de manganése de St Hilaire, P.Q. The Canadian Mineralogist: 13: 68-74.
Synonyms of YofortieriteHide
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Other Language Names for YofortieriteHide
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Simplified Chinese:锰坡缕石
Traditional Chinese:錳坡縷石
Relationship of Yofortierite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 9.EE. | Cairncrossite | Sr2Ca7-xNa2x(Si4O10)4(OH)2(H2O)15-x | Tric. 1 : _P_1 |
|---|---|---|---|
| 9.EE.05 | Bementite | Mn7Si6O15(OH)8 | Mon. |
| 9.EE.07 | Innsbruckite | Mn33(Si2O5)14(OH)38 | Mon. m : B m |
| 9.EE.10 | Brokenhillite | Mn8Si6O15(OH)10 | Hex. 6_m_ m : P_63_m c |
| 9.EE.10 | Pyrosmalite-(Fe) | Fe2+8Si6O15(OH,Cl)10 | Trig. 3_m_ _(_32/m ) : _P_3_m_1 |
| 9.EE.10 | Friedelite | Mn2+8Si6O15(OH,Cl)10 | Mon. 2/m : _B_2/m |
| 9.EE.10 | Pyrosmalite-(Mn) | Mn2+8Si6O15(OH,Cl)10 | Trig. 3_m_ _(_32/m ) : _P_3_m_1 |
| 9.EE.10 | Mcgillite | (Mn,Fe)8Si6O15(OH)8Cl2 | Mon. 2/m : _B_2/m |
| 9.EE.15 | Nelenite | (Mn,Fe)16(Si12O30)(OH)14[As3+3O6(OH)3] | Trig. 3_m_ _(_32/m ) : R_3_m |
| 9.EE.15 | Schallerite | Mn2+16As3Si12O36(OH)17 | Trig. 3_m_ : _P_3_m_1 |
| 9.EE.20 | Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Tuperssuatsiaite | Fe3+Fe3+2(Na◻)◻2Si8O20(OH)2(H2O)4 · 2H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Windhoekite | Fe3+(Fe3+1.67◻0.33)Ca2◻2Si8O20(OH)2(H2O)4(OH)2 · 6H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Unnamed (Na-Ca-Fe-Silicate-Hydrate) | NaCa(Fe2+,Al,Mn)5[Si8O19(OH)](OH)7 · 5H2O | Tric. 1 : _P_1 |
| 9.EE.20 | Windmountainite | ◻Fe3+2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O | Mon. 2/m : _B_2/m |
| 9.EE.20 | Ikorskyite | KMn3+(Si4O10) · 3H2O | Mon. 2/m : _P_21/b |
| 9.EE.25 | Falcondoite | (Ni,Mg)4Si6O15(OH)2 · 6H2O | Orth. |
| 9.EE.25 | Loughlinite | Na2Mg3Si6O16 · 8H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.EE.25 | Sepiolite | Mg4(Si6O15)(OH)2 · 6H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P n n a |
| 9.EE.25 | Kalifersite | (K,Na)5Fe3+7Si20O50(OH)6 · 12H2O | Tric. 1 : _P_1 |
| 9.EE.30 | Gyrolite | NaCa16Si23AlO60(OH)8 · 14H2O | Tric. 1 : _P_1 |
| 9.EE.30 | Orlymanite | Ca4Mn3Si8O20(OH)6 · 2H2O | Hex. |
| 9.EE.30 | Tungusite | Ca4Fe2Si6O15(OH)6 | Tric. 1 : _P_1 |
| 9.EE.35 | Reyerite | (Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2O | Trig. 3 : _P_3 |
| 9.EE.35 | Truscottite | (Ca,Mn)14Si24O58(OH)8 · 2H2O | Trig. |
| 9.EE.35 | Kodamaite | Na3(Ca5Na)Si16O36(OH)4F2 · (14-x)H2O | Tric. 1 : _P_1 |
| 9.EE.40 | Natrosilite | Na2Si2O5 | Mon. 2/m : _P_21/b |
| 9.EE.45 | Makatite | Na2Si4O8(OH)2 · 4H2O | Mon. 2/m : _P_21/b |
| 9.EE.50 | Varennesite | Na8Mn2Si10O25(OH,Cl)2 · 12H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : C m c m |
| 9.EE.55 | Raite | Mn2+Mn2+2Na2(◻1.75Ti0.25)Si8O20(OH)2(H2O)4 · Na(H2O)6 | Orth. 222 : _C_222 |
| 9.EE.60 | Intersilite | Na6Mn2+Ti[Si10O24(OH)](OH)3 · 4H2O | Mon. |
| 9.EE.65 | Shafranovskite | Na3K2(Mn,Fe,Na)4[Si9(O,OH)27](OH)2 · nH2O | Trig. 3_m_ : P_31_c |
| 9.EE.65 | Zakharovite | Na4Mn5Si10O24(OH)6 · 6H2O | Trig. 3_m_ |
| 9.EE.70 | Zeophyllite | Ca13Si10O28(OH)2F8 · 6H2O | Trig. 3 : _R_3 |
| 9.EE.75 | Minehillite | (K,Na)2-3Ca28Zn4Al4Si40O112(OH)16 | Hex. |
| 9.EE.80 | Fedorite | (Na,K)2-3(Ca4Na3)Si16O38(OH,F)2 · 3.5H2O | Tric. 1 : _P_1 |
| 9.EE.80 | Martinite | (Na,◻,Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2 · 4H2O | Tric. 1 : _P_1 |
| 9.EE.80 | Ellingsenite | Na5Ca6Si18O38(OH)13 · 6H2O | Tric. 1 : _P_1 |
| 9.EE.85 | Lalondeite | (Na,Ca)6(Ca,Na)3Si16O38(F,OH)2 · 3H2O | Tric. 1 : _P_1 |
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 YofortieriteHide
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References for YofortieriteHide
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Reference List:
Localities for YofortieriteHide
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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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- 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.