Ganophyllite Mineral Data + Say GANOPHYLLITE

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General Ganophyllite Information
Help on Chemical Formula: Chemical Formula: (K,Na)2(Mn,Al,Mg)8(Si,Al)12O29(OH)7·8-9(H2O)
Help on Composition: Composition: Molecular Weight = 1,514.20 gm
   Potassium   3.87 %  K     4.67 % K2O
   Sodium      0.76 %  Na    1.02 % Na2O
   Magnesium   2.41 %  Mg    3.99 % MgO
   Manganese  21.77 %  Mn   28.11 % MnO
   Aluminum    5.88 %  Al   11.11 % Al2O3
   Silicon    16.69 %  Si   35.71 % SiO2
   Hydrogen    1.60 %  H    14.28 % H2O
   Oxygen     47.02 %  O
             ______        ______ 
             100.00 %       98.89 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K1.5Na0.5Mn2+6Mg1.5Si9Al3.3O29(OH)7·8.5(H2O)
Help on Environment: Environment: Metamorphosed manganese deposit.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1890
Help on Locality: Locality: Harstig mine, Pajsberg, near Persberg, Vermland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek for "luster" and "leaf" for the high luster on cleavage planes.
Help on Synonym: Synonym: ICSD 64788
  PDF 21-359
 

Ganophyllite Image

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Ganophyllite

Comments: Light brown micaceous ganophyllite with milky quartz.
Location: Gambatesa Mine, Genova, Liguria, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
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Ganophyllite

Comments: SEM image of a ganophyllite crystal. (AmMin, 88:1325).
Location: Molinello Mine, Val Graveglia, Italy. Scale: Scale bar 100 µ-m.
© American Mineralogist

Ganophyllite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.6118:1:1.8496
Help on Cell Dimensions: Cell Dimensions: a = 16.6, b = 27.13, c = 50.18, Z = 10; beta = 93.96° V = 22,545.01 Den(Calc)= 1.12
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: A2/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 12.5(1), 3.14(0.25), 2.7(0.14),
Click Here for Large Ganophyllite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Noe D C , Veblen D R , American Mineralogist , 84 (1999) p.1088-1098, Incommensurate modulation and the crystal structure of ganophyllite

 

Physical Properties of Ganophyllite

Help on Cleavage: Cleavage: [???] Perfect
Help on Color: Color: Brownish yellow, Cinnamon brown.
Help on Density: Density: 2.84
Help on Diaphaniety: Diaphaniety: Transparent to translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Foliated - Two dimensional platy forms.
Help on Habit: Habit: Micaceous - Platy texture with "flexible" plates.
Help on Hardness: Hardness: 4-4.5 - Between Fluorite and Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: brownish yellow
 

Optical Properties of Ganophyllite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.062 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -1.379 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.5241,KPDmeas= 0.2067,KC= 0.2203
Help on Optical Data: Optical Data: Biaxial (-), a=1.537, b=1.611, g=1.613, bire=0.0760
Help on Pleochroism (x): Pleochroism (x): pale yellow brown.
Help on Pleochroism (y): Pleochroism (y): dark yellow brown.
Help on Pleochroism (z): Pleochroism (z): dark yellow brown.
 

Calculated Properties of Ganophyllite

Help on Electron Density: Electron Density:

relectron=2.82 gm/cc
note: rGanophyllite =2.84 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.01043
Boson Index = 0.98957
Help on Photoelectric: Photoelectric:

PEGanophyllite = 6.74 barns/electron
U=PEGanophyllite x relectron= 18.98 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 55.45 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Ganophyllite - barely detectable

 

Ganophyllite Classification
Help on Dana Class: Dana Class: 74.1.2.1 (74)Phyllosilicate Modulated Layers
  (74.1)with joined islands
  (74.1.2)Ganophyllite group
 
74.1.2.1 Ganophyllite (K,Na)2(Mn,Al,Mg)8(Si,Al)12O29(OH)7·8-9(H2O) A2/a 2/m
 
74.1.2.2 Eggletonite Na2Mn8[Si11AlO29](OH)7·11(H2O) Ia or I2/a Mono
 
74.1.2.3 Tamaite! (Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112·21(H2O) P 21/a 2/m
Help on Strunz Class: Strunz Class: VIII/H.17-60 VIII - Silicates
  VIII/H - Phyllosilicates (layered) Mica like layered silicates with [Si4O10]4- and related groups
  VIII/H.17 - Stilpnomelane series
 
VIII/H.17-10 Bannisterite KCa(Mn,Fe,Zn,Mg)21(Si,Al)32O76(OH)16·4-12(H2O) A2/a 2/m
 
VIII/H.17-20 Bariumbannisterite* (K,H3O)(Ba,Ca)(Mn,Fe,Mg)21(Si,Al)32O80(O,OH)16·4-12(H2O) Mono
 
VIII/H.17-30 Lennilenapeite K6-7(Mg,Mn,Fe,Fe,Zn)48(Si,Al)72(O,OH)216·16(H2O) Unk (pseudo-HEX) Tri
 
VIII/H.17-40 Stilpnomelane K(Fe,Mg,Fe)8(Si,Al)12(O,OH)27·n(H2O) P1 1
 
VIII/H.17-45 Franklinphilite (K,Na)4(Mn,Mg,Zn)48(Si,Al)72(O,OH)216·6(H2O) pseudo-HEX P1 or P1 Tri
 
VIII/H.17-50 Parsettensite (K,Na,Ca)(Mn,Al)7Si8O20(OH)8·2(H2O)(?) C 2/m 2/m
 
VIII/H.17-60 Ganophyllite (K,Na)2(Mn,Al,Mg)8(Si,Al)12O29(OH)7·8-9(H2O) A2/a 2/m
 
VIII/H.17-70 Eggletonite Na2Mn8[Si11AlO29](OH)7·11(H2O) Ia or I2/a Mono
 
VIII/H.17-75 Tamaite! (Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112·21(H2O) P 21/a 2/m
 
VIII/H.17-80 Ekmanite? (Fe,Mg,Mn,Fe)3(Si,Al)4O10(OH)2·2(H2O) Unk Ortho
 

Other Ganophyllite Information
Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Ganophyllite :
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 -Athena 5 - Crocoite.com Mineral Locations 6 - EUROmin Project 7 - Franklin Minerals(Dunn) 8 - Franklin Minerals(Palache) 9 -Google Images 10 -Google Scholar 11 -Handbook of Mineralogy (MinSocAm) 12 -Handbook of Mineralogy (UofA) 13 -MinDAT 14 -MinMax(Deutsch) 15 -MinMax(English) 16 -Mineralienatlas (Deutsch) 17 -QUT Mineral Atlas 18 - WWW-MINCRYST 19 -École des Mines de Paris

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Ganophyllite

(K,Na)2(Mn,Al,Mg)8(Si,Al)12O29(OH)7·8-9(H2O)
Dana No: 74.1.2.1 Strunz No: VIII/H.17-60
Locality:

 

Notes:

 
 
   
 
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