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Zircophyllite Mineral Data

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General Zircophyllite Information

Help on Chemical  Formula: Chemical Formula: K2(Na,Ca)(Mn,Fe++)7(Zr,Nb)2Si8O26(OH)4F
Help on Composition: Composition: Molecular Weight = 1,423.34 gm
   Potassium   4.67 %  K     5.63 % K2O
   Sodium      1.13 %  Na    1.52 % Na2O
   Calcium     0.56 %  Ca    0.79 % CaO
   Zirconium  10.25 %  Zr   13.85 % ZrO2
   Titanium    1.35 %  Ti    2.24 % TiO2
   Manganese  14.67 %  Mn   18.94 % MnO
   Niobium     1.96 %  Nb    2.80 % Nb2O5
   Iron       14.13 %  Fe   18.17 % FeO
   Silicon    15.00 %  Si   32.08 % SiO2
   Hydrogen    0.35 %  H     3.16 % H2O
   Oxygen     34.73 %  O
   Fluorine    1.20 %  F     1.20 % F
                -   %   F    -0.51 % -O=F2    
             ______        ______ 
             100.00 %       99.89 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K1.7Na0.7Ca0.2Fe2+3.6Mn2+3.8Zr1.6Nb0.3Ti0.4Si7.6O26.8(OH)3.2F0.9�0.9(H2O)
Help on Environment: Environment: In the natrolite zone of alkalic pegmatites.
Help on IMA Status: IMA Status: Approved IMA 1972
Help on Locality: Locality: Korgeredabinsh massif, Tuva, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the ZIRCOnium in the composition and the Greek for "leaf," in reference to the habit.
Help on Name Pronunciation: Name Pronunciation: Zircophyllite + Pronunciation Say ZIRCOPHYLLITE

Zircophyllite Image

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Comments: Brown fragment of zircophyllite showing lamellar habit.
Location: Desourdy Quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. Scale: See Image.
© Rruff Database

Zircophyllite Crystallography

Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.5(1), 2.8(0.7), 2.66(0.5),

Physical Properties of Zircophyllite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Dark brown, Black, Black brown.
Help on Density: Density: 3.34
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Micaceous - Platy texture with "flexible" plates.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 4-4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: light brown

Optical Properties of Zircophyllite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.039 (Excellent) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2189,KC= 0.2107
Ncalc = 1.7
Help on Optical Data: Optical Data: Biaxial (-), a=1.708, b=1.738, g=1.747, bire=0.0390, 2V(Calc)=56, 2V(Meas)=62.
Help on Pleochroism (x): Pleochroism (x): dark yellow.
Help on Pleochroism (y): Pleochroism (y): dark yellow.
Help on Pleochroism (z): Pleochroism (z): brown.

Calculated Properties of Zircophyllite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.21 gm/cc
note: Specific Gravity of Zircophyllite =3.34 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEZircophyllite = 26.01 barns/electron
U=PEZircophyllite x relectron= 83.55 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 64.80 (Gamma Ray American Petroleum Institute Units)
Concentration of Zircophyllite per GRapi unit = 1.54 (%)

Estimated Radioactivity from Zircophyllite - barely detectable


Zircophyllite Classification

Help on  Dana Class: Dana Class: (69)Inosilicate Chains with Side Branches or Loops
  (69.01)with (P=2, and N=4, 2 branches)
  (69.01.01)Astrophyllite group Astrophyllite K2Na(Fe,Mn)7Ti2Si8O26(OH)4 P1 1 Kupletskite K2Na(Mn,Fe)7(Ti,Nb)2Si8O26(OH)4F C 2/c 2/m Kupletskite-(Cs) (Cs,K)2Na(Mn,Fe,Li)7(Ti,Nb)2Si8O26(OH)4F P1 1 Niobophyllite K2Na(Fe,Mn)7(Nb,Ti)2Si8O26(OH)4(F,O) P1,P 1 Tri Zircophyllite K2(Na,Ca)(Mn,Fe)7(Zr,Nb)2Si8O26(OH)4F P1 1 Hydroastrophyllite (H3O,K)2Ca(Fe,Mn)5-6Ti2Si8O26(OH)4F P1 1 Magnesioastrophyllite K2Na[Na(Fe,Fe,Mn)Mg2]Ti2Si8O26(OH)4F A2/m 2/m Niobokupletskite! K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F) P1 1 Nalivkinite! Li2NaFe7Ti2Si8O24(OH)4F P1 1
Help on  Strunz Class: Strunz Class: 09.DC.05 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DC -Inosilicates with branched 2-periodic single chains Si2O6 + 2SiO3 � Si4O12
09.DC.05 Astrophyllite K2Na(Fe,Mn)7Ti2Si8O26(OH)4 P1 1
09.DC.05 Kupletskite-(Cs) (Cs,K)2Na(Mn,Fe,Li)7(Ti,Nb)2Si8O26(OH)4F P1 1
09.DC.05 Kupletskite K2Na(Mn,Fe)7(Ti,Nb)2Si8O26(OH)4F C 2/c 2/m
09.DC.05 Magnesioastrophyllite K2Na[Na(Fe,Fe,Mn)Mg2]Ti2Si8O26(OH)4F A2/m 2/m
09.DC.05 Hydroastrophyllite (H3O,K)2Ca(Fe,Mn)5-6Ti2Si8O26(OH)4F P1 1
09.DC.05 Niobophyllite K2Na(Fe,Mn)7(Nb,Ti)2Si8O26(OH)4(F,O) P1,P 1 Tri
09.DC.05 Nalivkinite! Li2NaFe7Ti2Si8O24(OH)4F P1 1
09.DC.05 Zircophyllite K2(Na,Ca)(Mn,Fe)7(Zr,Nb)2Si8O26(OH)4F P1 1
09.DC.05 Niobokupletskite! K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F) P1 1

Other Zircophyllite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Zircophyllite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 09.DC.05





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