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About ZircophylliteHide

Adamantine, Vitreous
4 - 4½
Crystal System:
Named after its chemical composition containing Zirconium and analogy to Astrophyllite (Greek φύλλον (fyllon), 'leaf', alluding to its micaceous habit).
Astrophyllite Group.

The currently accepted formula is K2NaFe2+7Zr2(Si4O12)2O2(OH)4F.

Classification of ZircophylliteHide

Approval Year:
Approval History:
Approved by IMA in 1971.
Redefined by IMA 2017 (proposal 17-D) as an astrophyllite-group mineral.

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

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

17 : Silicates Containing other Anions
1 : Silicates with fluoride (not containing Al)

Physical Properties of ZircophylliteHide

Adamantine, Vitreous
Light brown
4 - 4½ on Mohs scale

Optical Data of ZircophylliteHide

Biaxial (-)
RI values:
nα = 1.708 nβ = 1.738 nγ = 1.747
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:
r > v weak

Chemical Properties of ZircophylliteHide

Common Impurities:

Crystallography of ZircophylliteHide

Crystal System:

Type Occurrence of ZircophylliteHide

Synonyms of ZircophylliteHide

Other Language Names for ZircophylliteHide

Relationship of Zircophyllite to other SpeciesHide

Other Members of this group:
AstrophylliteK2NaFe2+7Ti2Si8O28(OH)4FTric. 1 : P1
BulgakiteLi2(Ca,Na)Fe2+7Ti2(Si4O12)2O2(OH)4(F,O)(H2O)2Tric. 1 : P1
Laverovite K2NaMn7Zr2(Si4O12)2O2(OH)4FTric. 1 : P1
NalivkiniteLi2Na(Fe2+,Mn2+)7Ti2Si8O26(OH)4FTric. 1 : P1
Tarbagataite(K□)Ca(Fe2+,Mn)7Ti2(Si4O12)2O2(OH)5 Tric. 1 : P1

Related Minerals - Nickel-Strunz GroupingHide

9.DC.05AstrophylliteK2NaFe2+7Ti2Si8O28(OH)4FTric. 1 : P1
9.DC.05LobanoviteK2Na(Fe2+4Mg2Na)Ti2(Si4O12)2O2(OH)4Mon. 2/m : B2/m
9.DC.05NiobokupletskiteK2NaMn2+7(Nb,Ti)(Si4O12)2O2(OH)4(O,F)Tric. 1 : P1
9.DC.05NalivkiniteLi2Na(Fe2+,Mn2+)7Ti2Si8O26(OH)4FTric. 1 : P1
9.DC.05SveinbergeiteCa(Fe2+6Fe3+)Ti2(Si4O12)2O2(OH)5(H2O)4Tric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)Hide 1 : P1,Na)3(Mn,Fe)7Ti2Si8O26(OH)4FTric.,Na)3(Fe,Mn)6(Nb,Ti)2Si8(O,OH,F)31Tric.,Mn2+)7Ti2Si8O26(OH)4FTric. 1 : P1,K,Ca)3(Fe,Mn)5-65Ti2Si8(O,OH)31Tric. 1 : P1 2/m : B2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.1.4Fluorapophyllite-(Na)NaCa4(Si8O20)F · 8H2OOrth.
17.1.5Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mnc
17.1.6Hydroxyapophyllite-(K)KCa4(Si8O20)(OH,F) · 8H2OTet.
17.1.8LeucophaniteNaCaBeSi2O6FOrth. 2 2 2 : P21 21 21
17.1.9NorbergiteMg3(SiO4)(F,OH)2Orth. mmm (2/m 2/m 2/m)
17.1.10Chondrodite(Mg,Fe2+)5(SiO4)2(F,OH)2Mon. 2/m : P21/b
17.1.11Humite(Mg,Fe2+)7(SiO4)3(F,OH)2Orth. mmm (2/m 2/m 2/m) : Pnma
17.1.12ClinohumiteMg9(SiO4)4F2Mon. 2/m : P21/b
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 · ~3H2OMon. 2/m : P21/m
17.1.15CuspidineCa4(Si2O7)(F,OH)2Mon. 2/m : P21/b
17.1.16BultfonteiniteCa2(HSiO4)F · H2OTric.
17.1.17ZeophylliteCa13Si10O28(OH)2F8 · 6H2OTrig. 3 : R3
17.1.18Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)Tric.
17.1.21Mosandrite-(Ce)(Ca3REE)[(H2O)2Ca0.50.5]Ti(Si2O7)2(OH)2(H2O)2Mon. 2/m : P21/b
17.1.22Hiortdahlite(Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4 Tric.
17.1.25Thorosteenstrupine(Ca,Th,Mn)3Si4O11F · 6H2O
17.1.27JinshajiangiteBaNaFe2+4Ti2(Si2O7)2O2(OH)2FTric. 1 : P1
17.1.28RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6Tric. 1 : P1

Other InformationHide

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 ZircophylliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
KAPUSTIN, Y.L. (1972): Zircophyllite - the zirconium analogue of astrophyllite, Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 101, 459-463 (in Russian). English translation: International Geology Review 15 (1973), 621-625. Abstracted in
American Mineralogist (1973): 58: 967.
PIILONEN, P.C., LALONDE, A.E., MCDONALD, A.M., GAULT, R.A. & LARSEN, A.O. (2003a) Insights into astrophyllite group minerals. I, nomenclature, composition and development of standardized general formula. Canadian Mineralogist 41, 1-26.
PIILONEN, P.C., MCDONALD, A.M. & LALONDE, A.E. (2003b): Insights into astrophyllite group minerals. II, crystal chemistry. Canadian Mineralogist 41, 27-54.
SOKOLOVA, E. & HAWTHORNE, F.C. (2016): The crystal structure of zircophyllite, K2NaFe2+7Zr2(Si4O12)2O2(OH)4F, an astrophyllite-supergroup mineral from Mont Saint-Hilaire, Québec, Canada. Canadian Mineralogist 54, 1539-1547.
Sokolova, E. Cámara, F., Hawthorne, F.C. & Ciriotti, M.E. (2018a): Redefinition of zircophyllite, ideally K2NaMn7Zr2(Si4O12)2O2(OH)4F, a kupletskite-group mineral of the astrophyllite supergroup (in accord with IMA 15-B) as an astrophyllite-group mineral, ideally K2NaFe2+7Zr2(Si4O12)2O2(OH)4F (IMA 17-D). Canadian Mineralogist 56, 1-3.

Internet Links for ZircophylliteHide

Localities for ZircophylliteHide

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

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Sokolova, E. Cámara, F., Hawthorne, F.C. & Ciriotti, M.E. (2018a): Redefinition of zircophyllite, ideally K2NaMn7Zr2(Si4O12)2O2(OH)4F, a kupletskite-group mineral of the astrophyllite supergroup (in accord with IMA 15-B) as an astrophyllite-group mineral, ideally K2NaFe2+7Zr2(Si4O12)2O2(OH)4F (IMA 17-D). Canadian Mineralogist 56, 1-3.
  • Azores
    • São Miguel Island
      • Água de Pau Massif
Russia (TL)
  • Tuva
    • 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
    • Bojanala Platinum District
R. Liferovich - L. Horváth p.c. (2004)
  • 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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