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Zircophyllite

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Formula:
(K,Na)3(Mn,Fe2+)7(Zr,Ti)2Si8O24(O,OH,F)7
System:
Triclinic
Colour:
Black-brown
Lustre:
Adamantine, Vitreous
Hardness:
4 - 4½
Name:
Named after its chemical composition containing Zirconium and analogy to Astrophyllite (Greek φύλλον (fyllon), 'leaf', alluding to its micaceous habit).

Classification of Zircophyllite

Approved 1971
9.DC.05

9 : SILICATES (Germanates)
D : Inosilicates
C : Inosilicates with branched 2-periodic single chains; Si2O6 + 2SiO3 Si4O12
69.1.1.5

69 : INOSILICATES Chains with Side Branches or Loops
1 : Chains with Side Branches or Loops with (P=2, and N=4, 2 branches)
17.1.26

17 : Silicates Containing other Anions
1 : Silicates with fluoride (not containing Al)
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First Recorded Occurrence of Zircophyllite

Year of Discovery:
1971

Physical Properties of Zircophyllite

Adamantine, Vitreous
Colour:
Black-brown
Streak:
Light brown
Hardness (Mohs):
4 - 4½

Crystallography of Zircophyllite

Crystal System:
Triclinic

Optical Data of Zircophyllite

Type:
Biaxial (-)
RI values:
nα = 1.708 nβ = 1.738 nγ = 1.747
2V:
Measured: 62° , Calculated: 56°
Max Birefringence:
δ = 0.039
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v weak

Chemical Properties of Zircophyllite

Formula:
(K,Na)3(Mn,Fe2+)7(Zr,Ti)2Si8O24(O,OH,F)7
Essential elements:
All elements listed in formula:
Common Impurities:
Ti,Hf,H2O

Relationship of Zircophyllite to other Species

Other Members of Group:
Astrophyllite(K,Na)3(Fe,Mn)7Ti2Si8O24(O,OH)7
BulgakiteLi2(Ca,Na)Fe72+Ti2(Si4O12)2O2(OH)4(F,O)(H2O)2
Hydroastrophyllite(H3O,K,Ca)3(Fe,Mn)5-65Ti2Si8(O,OH)31
Kupletskite(K,Na)3(Mn,Fe)7Ti2Si8O26(OH)4F
Kupletskite-(Cs)(Cs,K,Na)3(Mn,Fe2+)7(Ti,Nb)2Si8O24(O,OH,F)7
Magnesioastrophyllite(Na,K)4Mg2(Fe,Fe,Mn)5Ti2Si8O24(O,OH,F)7
NalivkiniteLi2Na(Fe2+,Mn2+)7Ti2Si8O26(OH)4F
NiobokupletskiteK2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F)
Niobophyllite(K,Na)3(Fe,Mn)6(Nb,Ti)2Si8(O,OH,F)31
SveinbergeiteCa(Fe62+Fe3+)Ti2(Si4O12)2O2(OH)5(H2O)4
Tarbagataite(K□)Ca(Fe2+,Mn)7Ti2(Si4O12)2O2(OH)5
9.DC.05Astrophyllite(K,Na)3(Fe,Mn)7Ti2Si8O24(O,OH)7
9.DC.05Hydroastrophyllite(H3O,K,Ca)3(Fe,Mn)5-65Ti2Si8(O,OH)31
9.DC.05Kupletskite(K,Na)3(Mn,Fe)7Ti2Si8O26(OH)4F
9.DC.05Magnesioastrophyllite(Na,K)4Mg2(Fe,Fe,Mn)5Ti2Si8O24(O,OH,F)7
9.DC.05Niobophyllite(K,Na)3(Fe,Mn)6(Nb,Ti)2Si8(O,OH,F)31
9.DC.05Kupletskite-(Cs)(Cs,K,Na)3(Mn,Fe2+)7(Ti,Nb)2Si8O24(O,OH,F)7
9.DC.05NiobokupletskiteK2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F)
9.DC.05NalivkiniteLi2Na(Fe2+,Mn2+)7Ti2Si8O26(OH)4F
9.DC.05SveinbergeiteCa(Fe62+Fe3+)Ti2(Si4O12)2O2(OH)5(H2O)4
17.1.1HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2
17.1.3AgrelliteNaCa2Si4O10F
17.1.4Fluorapophyllite-(Na)NaCa4(Si8O20)F · 8H2O
17.1.5Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
17.1.6Hydroxyapophyllite-(K)KCa4(Si8O20)(OH,F) · 8H2O
17.1.7HsianghualiteCa3Li2(Be3Si3O12)F2
17.1.8LeucophaniteNaCaBeSi2O6F
17.1.9NorbergiteMg3(SiO4)(F,OH)2
17.1.10Chondrodite(Mg,Fe2+)5(SiO4)2(F,OH)2
17.1.11Humite(Mg,Fe2+)7(SiO4)3(F,OH)2
17.1.12ClinohumiteMg9(SiO4)4F2
17.1.13CanasiteK2Na4Ca5(Si12O30(OH,F)4
17.1.14Charoite(K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2O
17.1.15CuspidineCa4(Si2O7)(F,OH)2
17.1.16BultfonteiniteCa2(HSiO4)F · H2O
17.1.17ZeophylliteCa13(Si10O28)F10 · 6H2O
17.1.18Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
17.1.19Yuksporite(K,Ba)NaCa2(Si,Ti)4O11(F,OH) · H2O
17.1.20Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
17.1.21Mosandrite(◻,Ca,Na)3(Ca,REE)4Ti(Si2O7)2[H2O,OH,F]4 · H2O
17.1.22Hiortdahlite(Ca,Na)3(Zr,Ti)(Si2O7)(O,OH,F)2
17.1.23BurpaliteNa2CaZr(Si2O7)F2
17.1.24SeidozeriteNa8Mn22+Zr3Ti3(Si2O7)4O4F4
17.1.25ThorosteenstrupineCaMnThSi4O11(OH)F · 6H2O
17.1.27JinshajiangiteBaNaFe42+Ti2(Si2O7)2O2(OH)2F
17.1.28Rosenbuschite(Ca,Na)3(Zr,Ti)(Si2O7)OF
17.1.29NarsarsukiteNa4(Ti,Fe)2[Si8O20](O,OH,F)2
17.1.30SonoliteMn92+(SiO4)4(OH,F)2

Other Names for Zircophyllite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Zircophyllite

Reference List:
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1972): 101: 459-463.

American Mineralogist (1973): 58: 967.

Canadian Mineralogist (2003): 41: 1-26.

Internet Links for Zircophyllite

Localities for Zircophyllite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
PIILONEN, P.C. (2001) Crystal chemistry, Mössbauer spectroscopy and paragenesis of astrophyllite group minerals from over and undersaturated alkaline rocks. Unpublished Ph. D. Thesis, Ottawa-Carleton Geoscience Centre, University of Ottawa, Canada. 523 p.
Portugal
 
  • Azores District
    • San Miguel Island
Russia
 
  • Eastern-Siberian Region
    • Tuva Republic
      • Sangilen Upland
ZVMO,(1972) 101, 459-463; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
South Africa
 
  • North West Province
    • Bojanala Platinum District
      • Western Bushveld Complex
R. Liferovich - L. Horváth p.c. (2004)
USA
 
  • Arkansas
    • Hot Spring Co.
      • Magnet Cove
H. Barwood - unpublished (2010)
    • Pulaski Co.
      • Little Rock
        • Granite Mountain area
Henry Barwood - unpublished (2010)
Mineral and/or Locality  
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