Ganophyllite (original) (raw)
A valid IMA mineral species - grandfathered
About GanophylliteHide
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Formula:
(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2O
Colour:
Light brown, pale pink
Specific Gravity:
2.77 - 2.84
Crystal System:
Monoclinic
Name:
Named in 1890 by Axel Hamberg from the Greek γανωμα for "brilliance or luster" and φύλλον for "leaf," in allusion to the high luster on platy cleavage surfaces.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:1649:6
215232a8-6628-47b0-81cf-bb0f8732ca71
IMA Classification of GanophylliteHide
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Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
(K,Na)xMn2+6(Si,Al)10O24(OH)4 · nH2O (x = 1-2; n = 7-11)
Type description reference:
Classification of GanophylliteHide
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9.EG.30
9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
74.1.2.1
74 : PHYLLOSILICATES Modulated Layers
1 : Modulated Layers with joined islands
16.16.9
16 : Silicates Containing Aluminum and other Metals
16 : Aluminosilicates 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 |
|---|---|---|
| Gnp | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Gnp | 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 GanophylliteHide
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Transparency:
Transparent, Translucent
Colour:
Light brown, pale pink
Cleavage:
Perfect
Perfect micaceous on {001}; distinct on {100}, {010}
Density:
2.77 - 2.84 g/cm3 (Measured) 2.975 g/cm3 (Calculated)
Optical Data of GanophylliteHide
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RI values:
_n_α = 1.537 _n_β = 1.611 _n_γ = 1.613
δ = 0.076
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Comments:
Dark to pale yellow-brown.
Comments:
X ≃ c; Y ≃ a; Z = b.
Chemistry of GanophylliteHide
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Mindat Formula:
(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2O
Common Impurities:
Fe,Zn,Pb,Ca,Ba
Crystallography of GanophylliteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 16.60 Å, b = 27.13 Å, c = 50.18 Å
β = 93.96°
Ratio:
a:b:c = 0.612 : 1 : 1.85
Unit Cell V:
22,545.01 ų (Calculated from Unit Cell)
Comment:
Space Group: A2/a
Crystal StructureHide
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X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 12.5 Å | (100) |
| 3.14 Å | (25) |
| 2.696 Å | (14) |
| 3.46 Å | (10) |
| 2.980 Å | (10) |
| 2.598 Å | (10) |
| 2.465 Å | (10) |
Geological EnvironmentHide
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Type Occurrence of GanophylliteHide
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Place of Conservation of Type Material:
Swedish Museum of Natural History, Stockholm, Sweden, number 332791.
Associated Minerals at Type Locality:
Other Language Names for GanophylliteHide
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Relationship of Ganophyllite to other SpeciesHide
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Other Members of Ganophyllite Group:
| Eggletonite | (Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7 · 11H2O | Mon. |
|---|---|---|
| Tamaite | (Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2O | Mon. 2/m : _P_21/b |
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 9.EG.05 | Cymrite | BaAl2Si2(O,OH)8 · H2O | Mon. 2 : _P_21 |
|---|---|---|---|
| 9.EG.10 | Naujakasite | (Na,K)6(Fe2+,Mn2+,Ca)(Al,Fe)4Si8O26 | Mon. |
| 9.EG.10 | Manganonaujakasite | Na6(Mn2+,Fe2+)Al4Si8O26 | Mon. 2/m : _B_2/m |
| 9.EG.15 | Dmisteinbergite | Ca(Al2Si2O8) | Trig. 32 : _P_312 |
| 9.EG.20 | Kampfite | Ba12(Si11Al5)O31(CO3)8Cl5 | Mon. m |
| 9.EG.25 | Vertumnite | Ca4Al4Si4O6(OH)24 · 3H2O | Mon. 2/m : _P_21/m |
| 9.EG.25 | Strätlingite | Ca2Al2SiO7 · 8H2O | Trig. 3_m_ : R_3_m |
| 9.EG.30 | Eggletonite | (Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7 · 11H2O | Mon. |
| 9.EG.30 | Tamaite | (Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2O | Mon. 2/m : _P_21/b |
| 9.EG.35 | Zussmanite | K(Fe,Mg,Mn)13(Si,Al)18O42(OH)14 | Trig. 3 : _R_3 |
| 9.EG.35 | Coombsite | KMn2+13(Si,Al)18O42(OH)14 | Trig. |
| 9.EG.40 | Chalcodite | K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 | Tric. 1 : _P_1 |
| 9.EG.40 | Parsettensite | (K,Na,Ca)7.5(Mn,Mg)49Si72O168(OH)50 · nH2O | Mon. 2/m : _B_2/m |
| 9.EG.40 | Franklinphilite | (K,Na)4(Mn2+,Mg,Zn)48(Si,Al)72(O,OH)216 · 6H2O | Tric. |
| 9.EG.40 | Lennilenapeite | K6-7(Mg,Mn,Fe,Zn)48(Si,Al)72(O,OH)216 · 16H2O | Tric. |
| 9.EG.40 | Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O | Tric. 1 : _P_1 |
| 9.EG.45 | Latiumite | (Ca,K)4(Si,Al)5O11(SO4,CO3) | Mon. 2 : _P_21 |
| 9.EG.45 | Levantite | KCa3Al2(SiO4)(Si2O7)(PO4) | Mon. 2 : _P_21 |
| 9.EG.45 | Tuscanite | KCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O | Mon. 2/m : _P_21/b |
| 9.EG.50 | Jagoite | Pb18Fe3+4[Si4(Si,Fe3+)6][Pb4Si16(Si,Fe)4]O82Cl6 | Hex. 6_m_2 : _P_6_c_2 |
| 9.EG.50 | Friisite | Pb8Al3Si8O27Cl3 | Hex. 6_m_2 : P_62_c |
| 9.EG.55 | Wickenburgite | CaPb3Al2Si10O24(OH)6 | Trig. 3_m_ : P_31_c |
| 9.EG.60 | Hyttsjöite | Pb18Ba2Ca5Mn2+2Fe3+2Si30O90Cl · 6H2O | Trig. 3 : _R_3 |
| 9.EG.65 | Armbrusterite | K5Na7Mn15[(Si9O22)4](OH)10 · 4H2O | Mon. 2/m : _B_2/m |
| 9.EG.70 | Roymillerite | Pb24Mg9(Si10O28)(CO3)10(BO3)(SiO4)(OH)13O5 | Tric. 1 : _P_1 |
| 9.EG.70 | Britvinite | [Pb7(OH)3F(BO3)2(CO3)][Mg4.5(OH)3(Si5O14)] | Tric. 1 : _P_1 |
| 9.EG.75 | Kayupovaite | Na2Mn10[(Si14Al2)O38(OH)8] · 7H2O | Mon. 2/m : _B_2/b |
| 9.EG.75 | UM1989-30-SiO:AlBaCaFeHKMgMn | (Ba,Ca)(Mn,Fe,Mg)22(Si,Al)32O76(OH)16 · 12H2O | |
| 9.EG.75 | Bannisterite | (Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O | Mon. 2/m : _B_2/b |
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 GanophylliteHide
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References for GanophylliteHide
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Reference List:
Dunn, Pete J., Peacor, Donald R., Valley, John W., Randall, Charles A. (1985) Ganomalite from Franklin, New Jersey, and Jakobsberg, Sweden: new chemical and crystallographic data. Mineralogical Magazine, 49 (353). 579-582 doi:10.1180/minmag.1985.049.353.12
Localities for GanophylliteHide
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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.