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Fengchengite

A valid IMA mineral species
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03819970017272472093258.jpg
Fengchengite

Kovdor Phlogopite mine, Kovdor Massif, Kovdorsky District, Murmansk Oblast, Russia
03819970017272472093258.jpg
Fengchengite

Kovdor Phlogopite mine, Kovdor Massif, Kovdorsky District, Murmansk Oblast, Russia
03819970017272472093258.jpg
Fengchengite

Kovdor Phlogopite mine, Kovdor Massif, Kovdorsky District, Murmansk Oblast, Russia
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About FengchengiteHide

07416250017272472097149.jpg
Fengcheng City, China
Formula:
Na12◻3(Ca,Sr)6Fe3+3 Zr3Si(Si25O73)(H2O,OH)3(OH,Cl)2
Colour:
Rose to deep-rose
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
2.90
Crystal System:
Trigonal
Member of:
Eudialyte Group
Name:
Named after Fengcheng city, Liaoning Province, China. The type locality is approximately 60 km NNE of the city.
Chemically similar to eudialyte sensu stricto. Similar to mogovidite in terms of vacancy and ferric iron dominance. Other group members with essential Fe3+ are feklichevite and ikranite.


Unique IdentifiersHide

Mindat ID:
42378
Long-form identifier:
mindat:1:1:42378:4

IMA Classification of FengchengiteHide

Classification of FengchengiteHide

Strunz-mindat (2026):
9.CO.10

9 : SILICATES (Germanates)
C : Cyclosilicates
O : [Si9O27]18- 9-membered rings

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
FcgIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of FengchengiteHide

Lustre:
Vitreous
Transparency:
Transparent, Translucent
Colour:
Rose to deep-rose
Streak:
White
Hardness:
5 on Mohs scale
Hardness:
VHN25=420 - 570 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
None observed
Fracture:
Irregular/Uneven
Density:
2.90(4) g/cm3 (Measured)    2.839 g/cm3 (Calculated)

Optical Data of FengchengiteHide

Type:
Uniaxial (+)
RI values:
nω = 1.603 nε = 1.607
Max. Birefringence:
δ = 0.004
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Surface Relief:
Moderate (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.
In focus
Interference Figure:
This shows the idealized uniaxial interference figure - the conoscopic (convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis centred and vertical. The coloured rings are isochromatics, computed with the same physics as the Michel-Lévy bar above; the dark cross is the isogyre.

For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
Pleochroism:
Non-pleochroic

Chemistry of FengchengiteHide

Mindat Formula:
Na12◻3(Ca,Sr)6Fe3+3 Zr3Si(Si25O73)(H2O,OH)3(OH,Cl)2
Element Weights:
Element% weight
O42.393 %
Si24.806 %
Na9.372 %
Zr9.297 %
Ca8.169 %
Fe5.691 %
H0.274 %

Calculated from ideal end-member formula.
O
Si
Na
Zr
Ca
Fe
H
Elements listed:
Ca, Cl, Fe, H, Na, O, Si, Sr, Zr - search for minerals with similar chemistry

Crystallography of FengchengiteHide

Crystal System:
Trigonal
Class (H-M):
3m(32/m) - Hexagonal Scalenohedral
Space Group:
R3m
Cell Parameters:
a = 14.2467(6) Å, c = 30.033(2) Å
Ratio:
a:c = 1 : 2.108
Unit Cell V:
5279.08 ų
Z:
3
Morphology:
{001}, {100}, {110}

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.186 Å(55)
5.761 Å(44)
4.187 Å(53)
3.201 Å(47)
2.978 Å(61)
2.857 Å(100)
2.146 Å(29)
1.771 Å(36)
Locality:
Saima complex, Dandong, Liaoning, China
Reference:
Shen, G., Xu, J., Yao, P., Li, G. (2017) Fengchengite: A New Species with the Na-Poor but Vacancy-Dominante N(5) Site in the Eudialyte Group. Acta Mineralogica Sinica, 37 (1/2) Guiyang. 140-151

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of FengchengiteHide

Type Locality:
ⓘ Saima complex, Dandong, Liaoning, China
General Appearance of Type Material:
Anhedral to subhedral grains generally 1 to 7 mm with the largest over 15 mm
Place of Conservation of Type Material:
Geological Museum of China, Beijing, China
Geological Setting of Type Material:
Pegmatite in agpaitic nepheline syenites
Associated Minerals at Type Locality:
AegirineAlbiteCatapleiiteFluorapatiteHezuolinite
HydroxylellestaditeLamprophylliteMicroclineNephelineOrthoclase
PhlogopiteRengeiteRinkite-(Ce)TitaniteZircon
Reference:
Shen, G., Xu, J., Yao, P., Li, G. (2017) Fengchengite: A New Species with the Na-Poor but Vacancy-Dominante N(5) Site in the Eudialyte Group. Acta Mineralogica Sinica, 37 (1/2) Guiyang. 140-151

Synonyms of FengchengiteHide

Other Language Names for FengchengiteHide

Relationship of Fengchengite to other SpeciesHide

Member of:
Eudialyte Group
Other Members of Eudialyte Group:
AlluaiviteNa19(Ca,Mn)6(Ti,Nb)3Si26O74Cl · 2H2OTrig. 3m(32/m) : R3m
Amableite-(Ce)Na15[(Ce1.5Na1.5)Mn3]Mn2Zr3◻Si[Si24O69(OH)3](OH)2 · H2OTrig. 3 : R3
AndrianoviteNa12(K,Sr,Ce)3Ca6Mn3Zr3Nb(Si25O73)(O,H2O,OH)5Trig. 3m : R3m
Aqualite(H3O)8(Na,K,Sr)5Ca6Zr3Si26O66(OH)9ClTrig. 3 : R3
Carbokentbrooksite(Na3Na3Na3Na3Na3)Ca6(VMn2+3)Zr3[Si3O9]2[Si9O27SiO][Si9O27Nb(OH)3](CO3)(H2O)Trig. 3m : R3m
DavinciiteNa12K3Ca6Fe2+3Zr3(Si26O73OH)Cl2Trig. 3m : R3m
DualiteNa30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3Mn[Si51O144](OH,H2O,Cl)9Trig. 3m : R3m
EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2Trig. 3m(32/m) : R3m
FeklicheviteNa11Ca9(Fe3+,Fe2+)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5Trig. 3m : R3m
FerrokentbrooksiteNa15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3Cl2Trig. 3m : R3m
GeorgbarsanoviteNa12(Mn,Sr,REE)3Ca6Fe2+3Zr3NbSi25O76Cl2 · H2OTrig. 3m : R3m
GolysheviteNa10Ca3Ca6Zr3Fe2SiNb(Si3O9)2(Si9O27)2CO3(OH)3 · H2OTrig. 3m : R3m
'Hydrorastsvetaevite'(Na11(H3O)11K6(H2O)1.5Sr)Ca12Fe3Na2MnZr6Si52O144(OH)4.5Cl3.5Trig. 3m : R3m
Ikranite(Na,H3O)15(Ca,Mn2+)6Fe3+2Zr3[H0-3Si3O9)2(Si9O27)2SiO]Cl · 2-3H2OTrig. 3m : R3m
Ilyukhinite(H3O,Na)14Ca6Mn2Zr3Si26O72(OH)2 · 3H2OTrig. 3m : R3m
Johnsenite-(Ce)Na12(Ce2Ca)Ca6Mn3Zr3[Si3O9]2[Si9O27SiO][Si9O27W(O)3](CO3)(OH,Cl)2Trig. 3m : R3m
Kentbrooksite(Na,REE)15(Ca,REE)6(Mn2+,Fe2+)3Zr3Nb[Si25O74]F2 · 2H2OTrig. 3m : R3m
KhomyakoviteNa12Sr3Ca6Fe3Zr3W[Si25O73](O,OH,H2O)3(OH,Cl)2Trig. 3m : R3m
Labyrinthite(Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3Trig. 3 : R3
ManganoeudialyteNa14Ca6Mn3Zr3[Si26O72(OH)2](H2O,Cl,O,OH)6Trig. 3m : R3m
ManganokhomyakoviteNa12Sr3Ca6Mn3Zr3W[Si25O73](O,OH,H2O)3(OH,Cl)2Trig. 3m : R3m
MogoviditeNa9(Ca,Na)12Fe2Zr3Si25O72(CO3) (OH)4Trig. 3m : R3m
OdikhinchaiteNa9Sr3[(H2O)2Na]Ca6Mn3Zr3NbSi (Si24O72)O(OH)3(CO3) · H2OTrig. 3m : R3m
OneilliteNa15Ca3Mn3Fe2+3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2Trig. 3 : R3
RaslakiteNa15Ca3Fe2+3(Na,Zr)3Zr3(Si,Nb)[(Si3O9)2(Si9O27)2SiO](OH,H2O)3(Cl,OH)Trig. 3 : R3
RastsvetaeviteNa27K8Ca12Fe3Zr6Si52O144(O,OH,H2O)6Cl2Trig. 3m : R3m
Selsurtite(H3O)12Na3(Ca3Mn3)(Na2Fe)Zr3◻{Si(Si3O9)2(Si9O27)Si9O24(OH)3}(OH)Cl(H2O)Trig. 3 : R3
SergevaniteNa15(Ca3Mn3)(Na2Fe)Zr3Si26O72(OH)3 · H2OTrig. 3 : R3
SiudaiteNa8(Mn2+2Na)Ca6(Fe3+,Mn2+)3Zr3NbSi24(Si,◻,Ti)O74(OH)2Cl · 5H2OTrig. 3m : R3m
TaseqiteNa12Sr3Ca6Fe3Zr3Nb[(Si3O9)2(Si9O27)2SiO]Cl2(O,OH,H2O)3Trig. 3m : R3m
'UM1971-22-SiO:CaClFeHMgMnNaNbZr'Na12Ca5(Ce,La,Y,Ca)Zr3(Zr,Nb)(Fe,Mn)3[Si9O24-26(OH)1-3]2[Si3O9]2ClTrig. 3m : R3m
'UM1990-78-SiO:CaClFeHKNaZr'(H3O)7(Na,K)5(Ca,Sr,Mn)6Zr3[Si3O7(O,OH)2]2[Si9O23(O,OH)4]2[SiNaFe(Zr,Ti,Al,Nb)◻]Cl1.5(O,OH)Trig. 3m : R3m
'UM1990-79-SiO:CaClFeHMnNaNbREEZr'Na14Ca5(Mg,Ca,Mn)Zr3(Si3O9)2(Si9O27)2(Si,Nb,Al,Zr)2(Fe,Zr)3(Mn,Na,Ce,La,Y)(Na,H2O,K,Sr)(OH)4-5(OH,Cl)
'UM1990-80-SiO:CaFeHMnNaNbREEZr'Na14Ca4(Mn,Ca)2Zr3(Si3O9)2(Si9O27)2(Si,Nb,Al,Zr)2(Fe,Mn,Al,Ti)3(Na,Ce,La,Y,Mn)(Na,H2O,K,Sr)(OH)7-8
'UM1998-21-SiO:CaCeClHMnNaZr'Na16Ca6(Mn,Ce)3Zr3(Si3O9)2(Si9O27)2(OH,Cl)4 · nH2OTrig. 3m : R3m
'UM1999-36-SiO:CaCeHMnNaNbSrZr'Na17(Ca,Ce,Sr)2Mn3(Zr,Nb)4Si25O73(O,OH,F,Cl)5Trig. 3 : R3
'UM2000-66-SiO:CaClFeHMnNaNbSrZr'Na12(Ca,Mn)6(Sr,Na,K)3(Fe,Mn)3(Zr,Nb)4Si25O66(OH,Cl)11Trig. 3m : R3m
'UM2000-67-SiO:CaClFeHMnNaNbZr'Zr4(Ca,Na,Mn,Fe)6(Fe,Mn,Ti)3Na17Si25O75(Al,Nb,Ti)Cl(OH)4.H2OTrig. 3m : R3m
'UM2000-80- SiO:CaCeFFeHMnNaNbTiZr'Na14(Na,Ca,Ce)(Mn,Ca,Ce)[Fe1.55(Zr,Na)(◻,Ti,Nb)]Zr3(Si,Al)(Si3O9)2(Si9O27)2(OH,O)4(F ,Cl) · H2O
'UM2003-39-SiO:CaClFeHHfNaNbSrTaTiZr'Na12(Na,K,Mn,Sr)2Ca5(Ca,Mn)(Zr,Hf)3(Fe,◻,Ta)3(Si,Nb,W)(Si,Al,Ti)Si24O72(OH,O)3.5Cl · 1.2H2OTrig. 3m : R3m
'UM2004-51-SiO:CaClFFeHNaNbTi'Na16Ca6(Fe,Mn)3Zr3(Ti,Nb)Si26O72FCl0.5 · nH2OTrig. 3m : R3m
'UM2005-36-SiO:AlBaCaClFeHKMnNaREESrTiZr'[(H3O)9.32Na5.86K0.53Ba0.36Sr0.15][Ca5.22Sr0.49Ce0.16Mn0.13][Zr2.42Ti0.54Hf0.02Nb0.02][Na1.48(Fe
'UM2005-37-SiO:AlBaCaClFeHKMnNaREESrTiZr'[(H3O)9.26Na2.12K1.20Ba0.46Sr0.48][Ca5.76Ce0.24][Zr2.92Ti0.08][Na0.62(Fe0.23Mn0.11(H2O)0.34)][Si
'UM2005-38-SiO:AlBaCaClFeHKMnNaNbREESrTiYZr'[(H3O)10.85Na3.3Sr0.48K0.21Ce0.2Y0.1Ba0.04][Ca2.10Na0.9][Ca2.4Na0.3Mn0.3][Zr2.97Hf0.03][Fe1.32
'UM2005-39-SiO:AlBaCaClFeHKMnNaNbREESrTiYZr'[(H3O)11.61Na3.0Sr0.63Ce0.22K0.2Y0.05Ba0.03][Ca2.25Na0.75][Ca2.4Mn0.6][Zr2.98Hf0.02][Fe3+0.66
'UM2005-40-SiO:AlCaClFeHKMnNaNbREESrTiYZr'[(H3O)5.58Na5.25Ce0.63K0.3Y0.19Sr0.05][Ca3][Ca1.71Mn1.29][Zr2.96Hf0.04][(Fe3+1.0Fe2+0.35)(Fe3+
'UM2005-41-SiO:BaCaFeHKMgMnNaNbREESrTiYZr'[(H3O)8.53Na3.51Sr0.55Ce0.45Y0.3Ba0.15K0.06][Ca2.25Sr0.45Na0.3][Ca2.4Mn0.6][Zr2.97Hf0.03][(Mn0.
'UM2006-17-SiO:CaClFFeHMnNaZr'Na15(Ca3Mn3)Zr3(Fe,Zr)3SiSi(Si3O9)2(Si9O27)2O2(OH,F,Cl)3 · 2H2O
'UM2006-18-SiO:CaClFFeHMnNaZr'Na15Ca3(Mn,Fe)3Zr3(Zr,Na)3(Si,Nb)(S,Ti,Si)(Si3O9)2(Si9O27)2(O,OH)5(Cl,F,H2O)Trig. 3 : R3
'UM2006-28-SiO:CaHMnNaZr'Na33Ca12Zr6Mn3(Mn,Nb,Ti)2Si50O132(O,OH)12(OH,H2O,Cl)10
'UM2010-06-SiO:CaFeHMnNaNbREETiZr'[Na,(H3O)]15(Ca3Mn3)Na3Zr3(Si,Ti)[Si25O72OH](OH)2 · 2H2O
'Unnamed (Hydrated Hydrous Na-Ca-Mn-Fe-Zr-Ti Silicate Chloride)'Na37Ca10Mn2FeZr6Si50(Ti,Nb)2O144(OH)5Cl3 · H2OTrig. 3m : R3m
'Unnamed (Hypermanganese Eudialyte)'Na29Ca12Zr6[Si48O132(O,OH)12]{[Na]4[Si]2}{[Mn]3[Mn,Nb,Ti]2}(OH,H2O,Cl)10Trig. 3m(32/m) : R3m
'Unnamed (M4-vacant Sodium Calcium Manganese Zirconium Iron Silicon Hydroxyl Hydrated Eudialyte Group Species)'Na13(Ca3Mn3)Zr3(Fe, Mn)3(◻)(Si)[Si3O9]2[Si9O27]2(O,OH,Cl)3 · 2H2O
VoronkoviteNa15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl · H2OTrig. 3 : R3
Zirsilite-(Ce)Na11-12(Ce,Na)3Ca6Mn3Zr3Nb(Si19O55)(Si3O9)2(CO3)(OH)3 · H2OTrig. 3m : R3m

Related Minerals - Strunz-mindat GroupingHide

9.CO.OdikhinchaiteNa9Sr3[(H2O)2Na]Ca6Mn3Zr3NbSi (Si24O72)O(OH)3(CO3) · H2OTrig. 3m : R3m
9.CO.10ManganokhomyakoviteNa12Sr3Ca6Mn3Zr3W[Si25O73](O,OH,H2O)3(OH,Cl)2Trig. 3m : R3m
9.CO.10SergevaniteNa15(Ca3Mn3)(Na2Fe)Zr3Si26O72(OH)3 · H2OTrig. 3 : R3
9.CO.10FeklicheviteNa11Ca9(Fe3+,Fe2+)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5Trig. 3m : R3m
9.CO.10'UM1990-78-SiO:CaClFeHKNaZr'(H3O)7(Na,K)5(Ca,Sr,Mn)6Zr3[Si3O7(O,OH)2]2[Si9O23(O,OH)4]2[SiNaFe(Zr,Ti,Al,Nb)◻]Cl1.5(O,OH)Trig. 3m : R3m
9.CO.10GolysheviteNa10Ca3Ca6Zr3Fe2SiNb(Si3O9)2(Si9O27)2CO3(OH)3 · H2OTrig. 3m : R3m
9.CO.10Labyrinthite(Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3Trig. 3 : R3
9.CO.10'UM1990-79-SiO:CaClFeHMnNaNbREEZr'Na14Ca5(Mg,Ca,Mn)Zr3(Si3O9)2(Si9O27)2(Si,Nb,Al,Zr)2(Fe,Zr)3(Mn,Na,Ce,La,Y)(Na,H2O,K,Sr)(OH)4-5(OH,Cl)
9.CO.10Ilyukhinite(H3O,Na)14Ca6Mn2Zr3Si26O72(OH)2 · 3H2OTrig. 3m : R3m
9.CO.10OneilliteNa15Ca3Mn3Fe2+3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2Trig. 3 : R3
9.CO.10'UM1971-22-SiO:CaClFeHMgMnNaNbZr'Na12Ca5(Ce,La,Y,Ca)Zr3(Zr,Nb)(Fe,Mn)3[Si9O24-26(OH)1-3]2[Si3O9]2ClTrig. 3m : R3m
9.CO.10'UM1998-21-SiO:CaCeClHMnNaZr'Na16Ca6(Mn,Ce)3Zr3(Si3O9)2(Si9O27)2(OH,Cl)4 · nH2OTrig. 3m : R3m
9.CO.10Selsurtite(H3O)12Na3(Ca3Mn3)(Na2Fe)Zr3◻{Si(Si3O9)2(Si9O27)Si9O24(OH)3}(OH)Cl(H2O)Trig. 3 : R3
9.CO.10DavinciiteNa12K3Ca6Fe2+3Zr3(Si26O73OH)Cl2Trig. 3m : R3m
9.CO.10Carbokentbrooksite(Na3Na3Na3Na3Na3)Ca6(VMn2+3)Zr3[Si3O9]2[Si9O27SiO][Si9O27Nb(OH)3](CO3)(H2O)Trig. 3m : R3m
9.CO.10Zirsilite-(Ce)Na11-12(Ce,Na)3Ca6Mn3Zr3Nb(Si19O55)(Si3O9)2(CO3)(OH)3 · H2OTrig. 3m : R3m
9.CO.10TaseqiteNa12Sr3Ca6Fe3Zr3Nb[(Si3O9)2(Si9O27)2SiO]Cl2(O,OH,H2O)3Trig. 3m : R3m
9.CO.10Ikranite(Na,H3O)15(Ca,Mn2+)6Fe3+2Zr3[H0-3Si3O9)2(Si9O27)2SiO]Cl · 2-3H2OTrig. 3m : R3m
9.CO.10RaslakiteNa15Ca3Fe2+3(Na,Zr)3Zr3(Si,Nb)[(Si3O9)2(Si9O27)2SiO](OH,H2O)3(Cl,OH)Trig. 3 : R3
9.CO.10Johnsenite-(Ce)Na12(Ce2Ca)Ca6Mn3Zr3[Si3O9]2[Si9O27SiO][Si9O27W(O)3](CO3)(OH,Cl)2Trig. 3m : R3m
9.CO.10'UM2004-51-SiO:CaClFFeHNaNbTi'Na16Ca6(Fe,Mn)3Zr3(Ti,Nb)Si26O72FCl0.5 · nH2OTrig. 3m : R3m
9.CO.10'UM1990-80-SiO:CaFeHMnNaNbREEZr'Na14Ca4(Mn,Ca)2Zr3(Si3O9)2(Si9O27)2(Si,Nb,Al,Zr)2(Fe,Mn,Al,Ti)3(Na,Ce,La,Y,Mn)(Na,H2O,K,Sr)(OH)7-8
9.CO.10'UM2003-39-SiO:CaClFeHHfNaNbSrTaTiZr'Na12(Na,K,Mn,Sr)2Ca5(Ca,Mn)(Zr,Hf)3(Fe,◻,Ta)3(Si,Nb,W)(Si,Al,Ti)Si24O72(OH,O)3.5Cl · 1.2H2OTrig. 3m : R3m
9.CO.10'UM2006-17-SiO:CaClFFeHMnNaZr'Na15(Ca3Mn3)Zr3(Fe,Zr)3SiSi(Si3O9)2(Si9O27)2O2(OH,F,Cl)3 · 2H2O
9.CO.10'UM2006-18-SiO:CaClFFeHMnNaZr'Na15Ca3(Mn,Fe)3Zr3(Zr,Na)3(Si,Nb)(S,Ti,Si)(Si3O9)2(Si9O27)2(O,OH)5(Cl,F,H2O)Trig. 3 : R3
9.CO.10MogoviditeNa9(Ca,Na)12Fe2Zr3Si25O72(CO3) (OH)4Trig. 3m : R3m
9.CO.10'UM2006-28-SiO:CaHMnNaZr'Na33Ca12Zr6Mn3(Mn,Nb,Ti)2Si50O132(O,OH)12(OH,H2O,Cl)10
9.CO.10'Unnamed (Hypermanganese Eudialyte)'Na29Ca12Zr6[Si48O132(O,OH)12]{[Na]4[Si]2}{[Mn]3[Mn,Nb,Ti]2}(OH,H2O,Cl)10Trig. 3m(32/m) : R3m
9.CO.10'Hydrorastsvetaevite'(Na11(H3O)11K6(H2O)1.5Sr)Ca12Fe3Na2MnZr6Si52O144(OH)4.5Cl3.5Trig. 3m : R3m
9.CO.10'UM1999-36-SiO:CaCeHMnNaNbSrZr'Na17(Ca,Ce,Sr)2Mn3(Zr,Nb)4Si25O73(O,OH,F,Cl)5Trig. 3 : R3
9.CO.10'UM2000-66-SiO:CaClFeHMnNaNbSrZr'Na12(Ca,Mn)6(Sr,Na,K)3(Fe,Mn)3(Zr,Nb)4Si25O66(OH,Cl)11Trig. 3m : R3m
9.CO.10GeorgbarsanoviteNa12(Mn,Sr,REE)3Ca6Fe2+3Zr3NbSi25O76Cl2 · H2OTrig. 3m : R3m
9.CO.10'Unnamed (Hydrated Hydrous Na-Ca-Mn-Fe-Zr-Ti Silicate Chloride)'Na37Ca10Mn2FeZr6Si50(Ti,Nb)2O144(OH)5Cl3 · H2OTrig. 3m : R3m
9.CO.10EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2Trig. 3m(32/m) : R3m
9.CO.10AlluaiviteNa19(Ca,Mn)6(Ti,Nb)3Si26O74Cl · 2H2OTrig. 3m(32/m) : R3m
9.CO.10'UM2010-06-SiO:CaFeHMnNaNbREETiZr'[Na,(H3O)]15(Ca3Mn3)Na3Zr3(Si,Ti)[Si25O72OH](OH)2 · 2H2O
9.CO.10Aqualite(H3O)8(Na,K,Sr)5Ca6Zr3Si26O66(OH)9ClTrig. 3 : R3
9.CO.10AndrianoviteNa12(K,Sr,Ce)3Ca6Mn3Zr3Nb(Si25O73)(O,H2O,OH)5Trig. 3m : R3m
9.CO.10DualiteNa30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3Mn[Si51O144](OH,H2O,Cl)9Trig. 3m : R3m
9.CO.10FerrokentbrooksiteNa15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3Cl2Trig. 3m : R3m
9.CO.10SiudaiteNa8(Mn2+2Na)Ca6(Fe3+,Mn2+)3Zr3NbSi24(Si,◻,Ti)O74(OH)2Cl · 5H2OTrig. 3m : R3m
9.CO.10VoronkoviteNa15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl · H2OTrig. 3 : R3
9.CO.10ManganoeudialyteNa14Ca6Mn3Zr3[Si26O72(OH)2](H2O,Cl,O,OH)6Trig. 3m : R3m
9.CO.10RastsvetaeviteNa27K8Ca12Fe3Zr6Si52O144(O,OH,H2O)6Cl2Trig. 3m : R3m
9.CO.10Kentbrooksite(Na,REE)15(Ca,REE)6(Mn2+,Fe2+)3Zr3Nb[Si25O74]F2 · 2H2OTrig. 3m : R3m
9.CO.10Amableite-(Ce)Na15[(Ce1.5Na1.5)Mn3]Mn2Zr3◻Si[Si24O69(OH)3](OH)2 · H2OTrig. 3 : R3
9.CO.10KhomyakoviteNa12Sr3Ca6Fe3Zr3W[Si25O73](O,OH,H2O)3(OH,Cl)2Trig. 3m : R3m

Fluorescence of FengchengiteHide

In UV light:
Not fluorescent

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.

Internet Links for FengchengiteHide

References for FengchengiteHide

Localities for FengchengiteHide

Showing 1 localities.

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.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
China (TL)
 
  • Liaoning
    • Dandong
Williams et al. (2011) +1 other reference
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