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Zircophyllite Mineral Data
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General Zircophyllite Information
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 Chemical Formula: |
K2(Na,Ca)(Mn,Fe++)7(Zr,Nb)2Si8O26(OH)4F |
| Composition: |
Molecular Weight = 1,423.34 gm |
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Potassium 4.67 % K 5.63 % K2O |
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Sodium 1.13 % Na 1.52 % Na2O |
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Calcium 0.56 % Ca 0.79 % CaO |
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Zirconium 10.25 % Zr 13.85 % ZrO2 |
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Titanium 1.35 % Ti 2.24 % TiO2 |
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Manganese 14.67 % Mn 18.94 % MnO |
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Niobium 1.96 % Nb 2.80 % Nb2O5 |
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Iron 14.13 % Fe 18.17 % FeO |
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Silicon 15.00 % Si 32.08 % SiO2 |
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Hydrogen 0.35 % H 3.16 % H2O |
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Oxygen 34.73 % O |
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Fluorine 1.20 % F 1.20 % F |
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- %
F -0.51 % -O=F2 |
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______ ______ |
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100.00 % 99.89 % = TOTAL OXIDE |
| Empirical Formula: |
K1.7Na0.7Ca0.2Fe2+3.6Mn2+3.8Zr1.6Nb0.3Ti0.4Si7.6O26.8(OH)3.2F0.9�0.9(H2O) |
| Environment: |
In the natrolite zone of alkalic pegmatites. |
| IMA Status: |
Approved IMA 1972 |
| Locality: |
Korgeredabinsh massif, Tuva, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the ZIRCOnium in the composition and the Greek for "leaf," in reference to the habit. |
| Name Pronunciation: |
Zircophyllite + Pronunciation  |
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Zircophyllite Image |
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Images:
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Zircophyllite
Comments: Brown fragment of zircophyllite showing lamellar habit.
Location: Desourdy Quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada.
Scale: See Image.
© Rruff Database |
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Zircophyllite Crystallography
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| Crystal System: |
Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 |
| X Ray Diffraction: |
By Intensity(I/Io): 3.5(1), 2.8(0.7), 2.66(0.5), |
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Physical Properties of Zircophyllite
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| Cleavage: |
{001} Perfect |
| Color: |
Dark brown, Black, Black brown. |
| Density: |
3.34 |
| Diaphaneity: |
Translucent to Opaque |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Micaceous - Platy texture with "flexible" plates. |
| Habit: |
Platy - Sheet forms (e.g. micas). |
| Hardness: |
4-4.5 - Between Fluorite and Apatite |
| Luster: |
Vitreous - Adamantine |
| Streak: |
light brown |
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Optical Properties of Zircophyllite
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| Gladstone-Dale: |
CI meas= -0.039 (Excellent) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2189,KC= 0.2107
Ncalc = 1.7 |
| Optical Data: |
Biaxial (-), a=1.708, b=1.738, g=1.747, bire=0.0390, 2V(Calc)=56, 2V(Meas)=62. |
| Pleochroism (x): |
dark yellow. |
| Pleochroism (y): |
dark yellow. |
| Pleochroism (z): |
brown. |
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Calculated Properties of Zircophyllite
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| Electron Density: |
Bulk Density (Electron Density)=3.21 gm/cc
note: Specific Gravity of Zircophyllite =3.34 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEZircophyllite = 26.01 barns/electron
U=PEZircophyllite x relectron= 83.55 barns/cc.
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| Radioactivity: |
GRapi = 64.80 (Gamma Ray American Petroleum Institute Units)
Concentration of Zircophyllite per GRapi unit = 1.54 (%)
Estimated Radioactivity from Zircophyllite  - barely detectable
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Zircophyllite Classification
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| Dana Class: |
69.01.01.05 (69)Inosilicate Chains with Side Branches or Loops |
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(69.01)with (P=2, and N=4, 2 branches) |
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(69.01.01)Astrophyllite group |
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69.01.01.01 Astrophyllite K2Na(Fe,Mn)7Ti2Si8O26(OH)4 P1 1 |
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69.01.01.02 Kupletskite K2Na(Mn,Fe)7(Ti,Nb)2Si8O26(OH)4F C 2/c 2/m |
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69.01.01.03 Kupletskite-(Cs) (Cs,K)2Na(Mn,Fe,Li)7(Ti,Nb)2Si8O26(OH)4F P1 1 |
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69.01.01.04 Niobophyllite K2Na(Fe,Mn)7(Nb,Ti)2Si8O26(OH)4(F,O) P1,P 1 Tri |
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69.01.01.05 Zircophyllite K2(Na,Ca)(Mn,Fe)7(Zr,Nb)2Si8O26(OH)4F P1 1 |
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69.01.01.06 Hydroastrophyllite (H3O,K)2Ca(Fe,Mn)5-6Ti2Si8O26(OH)4F P1 1 |
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69.01.01.07 Magnesioastrophyllite K2Na[Na(Fe,Fe,Mn)Mg2]Ti2Si8O26(OH)4F A2/m 2/m |
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69.01.01.08 Niobokupletskite! K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F) P1 1 |
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69.01.01.09 Nalivkinite! Li2NaFe7Ti2Si8O24(OH)4F P1 1 |
| Strunz Class: |
09.DC.05 09 - SILICATES (Germanates) |
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09.D - Inosilicates* Structural terminology according to Liebau (1985) |
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09.DC -Inosilicates with branched 2-periodic single chains Si2O6 + 2SiO3 � Si4O12 |
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09.DC.05 Astrophyllite K2Na(Fe,Mn)7Ti2Si8O26(OH)4 P1 1 |
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09.DC.05 Kupletskite-(Cs) (Cs,K)2Na(Mn,Fe,Li)7(Ti,Nb)2Si8O26(OH)4F P1 1 |
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09.DC.05 Kupletskite K2Na(Mn,Fe)7(Ti,Nb)2Si8O26(OH)4F C 2/c 2/m |
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09.DC.05 Magnesioastrophyllite K2Na[Na(Fe,Fe,Mn)Mg2]Ti2Si8O26(OH)4F A2/m 2/m |
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09.DC.05 Hydroastrophyllite (H3O,K)2Ca(Fe,Mn)5-6Ti2Si8O26(OH)4F P1 1 |
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09.DC.05 Niobophyllite K2Na(Fe,Mn)7(Nb,Ti)2Si8O26(OH)4(F,O) P1,P 1 Tri |
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09.DC.05 Nalivkinite! Li2NaFe7Ti2Si8O24(OH)4F P1 1 |
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09.DC.05 Zircophyllite K2(Na,Ca)(Mn,Fe)7(Zr,Nb)2Si8O26(OH)4F P1 1 |
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09.DC.05 Niobokupletskite! K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F) P1 1 |
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Other Zircophyllite Information
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| References: |
NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| 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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Zircophyllite
K2(Na,Ca)(Mn,Fe++)7(Zr,Nb)2Si8O26(OH)4F
Dana No: 69.01.01.05 Strunz No: 09.DC.05
Locality:
Notes:
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