Log In
Eudialyte Group
A group of related mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Eudialyte Group
Formula:
[N(1)N(2)N(3)N(4)N(5)]3[M(1.1)M(1.2)]3[M(2.1)M(2.2)M(2.3)]3-6[M(3)M(4)]Z3[Si24O72]Θ4X(1)X(2)
N(1–5) = Na, H3O+, K, Sr, REE, Ba, Mn, or Ca;
M(1) = Ca, Mn, REE, Na, Sr, or Fe;
M(2) = Fe, Mn, Na, Zr, Ta, Ti, K, Ba, or H3O+;
M(3) and M(4) = Si, S, Nb,Ti, W, or Na;
Z = Zr, Ti, or Nb;
Θ = O, OH, or H2O;
X(1) and X(2) = Cl, F, H2O, OH, CO3, SO4, AlO4, or MnO4.
The silicate portion is an "abbreviation", usually expandable not only into two cyclic trisilicate and two cyclic nonasilicate groups, but additional Si-bearing groups
M(1) = Ca, Mn, REE, Na, Sr, or Fe;
M(2) = Fe, Mn, Na, Zr, Ta, Ti, K, Ba, or H3O+;
M(3) and M(4) = Si, S, Nb,Ti, W, or Na;
Z = Zr, Ti, or Nb;
Θ = O, OH, or H2O;
X(1) and X(2) = Cl, F, H2O, OH, CO3, SO4, AlO4, or MnO4.
The silicate portion is an "abbreviation", usually expandable not only into two cyclic trisilicate and two cyclic nonasilicate groups, but additional Si-bearing groups
A complex (or extremely complex) group of trigonal cyclosilicates with both three-fold (Si3O9)6- and nine-fold (Si9O27)18- rings. In some members, two nine-fold rings are bridged by a single silicon atom to give a [(Si9O27)2SiO]34- group.
The general formula may not be "satisfactory": "(...) Moreover, the general formula of eudialytes was developed without regard for a number of large-cation sites that, in the Russian literature, are designated as A(6), A(7), and A(8). The first two sites are located between the M(2) site and the axial M(3) and M(4) sites. Most frequently, they are formed in low-iron minerals. While the third site is rare in occurrence (...)".
Symmetry may sometimes be lowered (at the point group level) due to complex ordering-related phenomena.
Chemical substitutions are, in part, governed by blocky isotypism.
The general formula may not be "satisfactory": "(...) Moreover, the general formula of eudialytes was developed without regard for a number of large-cation sites that, in the Russian literature, are designated as A(6), A(7), and A(8). The first two sites are located between the M(2) site and the axial M(3) and M(4) sites. Most frequently, they are formed in low-iron minerals. While the third site is rare in occurrence (...)".
Symmetry may sometimes be lowered (at the point group level) due to complex ordering-related phenomena.
Chemical substitutions are, in part, governed by blocky isotypism.
Unique Identifiers
Mindat ID:
11021
Long-form identifier:
mindat:1:1:11021:5
IMA Classification of Eudialyte Group
IMA status notes:
IMA Approved Group Name
First published:
2009
Classification of Eudialyte Group
Dana 7th ed.:
64.1.1.0
Pronunciation of Eudialyte Group
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Chemistry of Eudialyte Group
Mindat Formula:
[N(1)N(2)N(3)N(4)N(5)]3[M(1.1)M(1.2)]3[M(2.1)M(2.2)M(2.3)]3-6[M(3)M(4)]Z3[Si24O72]Θ4X(1)X(2)
N(1–5) = Na, H3O+, K, Sr, REE, Ba, Mn, or Ca;
M(1) = Ca, Mn, REE, Na, Sr, or Fe;
M(2) = Fe, Mn, Na, Zr, Ta, Ti, K, Ba, or H3O+;
M(3) and M(4) = Si, S, Nb,Ti, W, or Na;
Z = Zr, Ti, or Nb;
Θ = O, OH, or H2O;
X(1) and X(2) = Cl, F, H2O, OH, CO3, SO4, AlO4, or MnO4.
The silicate portion is an "abbreviation", usually expandable not only into two cyclic trisilicate and two cyclic nonasilicate groups, but additional Si-bearing groups
N(1–5) = Na, H3O+, K, Sr, REE, Ba, Mn, or Ca;
M(1) = Ca, Mn, REE, Na, Sr, or Fe;
M(2) = Fe, Mn, Na, Zr, Ta, Ti, K, Ba, or H3O+;
M(3) and M(4) = Si, S, Nb,Ti, W, or Na;
Z = Zr, Ti, or Nb;
Θ = O, OH, or H2O;
X(1) and X(2) = Cl, F, H2O, OH, CO3, SO4, AlO4, or MnO4.
The silicate portion is an "abbreviation", usually expandable not only into two cyclic trisilicate and two cyclic nonasilicate groups, but additional Si-bearing groups
Chemical Analysis
Oxide wt%:
| 1 | 2 | 3 | |
|---|---|---|---|
| SiO2 | 43.89 % | 41.64 % | 49.41 % |
| TiO2 | 0.47 % | 0.68 % | |
| ZrO2 | 10.43 % | 9.89 % | 11.17 % |
| HfO2 | 0.48 % | 0.32 % | 0.24 % |
| Al2O3 | 0.17 % | ||
| Y2O3 | 1.11 % | 0.28 % | |
| La2O3 | 2.39 % | 3.10 % | |
| Ce2O3 | 3.96 % | 0.08 % | 4.19 % |
| Pr2O3 | 0.30 % | 0.16 % | |
| Nd2O3 | 0.76 % | 0.59 % | |
| Sm2O3 | 0.10 % | ||
| Eu2O3 | 0.01 % | ||
| Gd2O3 | 0.13 % | ||
| Tb2O3 | 0.03 % | ||
| Dy2O3 | 0.18 % | ||
| Ho2O3 | 0.05 % | ||
| Er2O3 | 0.17 % | ||
| Tm2O3 | 0.03 % | ||
| Yb2O3 | 0.22 % | ||
| Lu2O3 | 0.03 % | ||
| Nb2O5 | 3.23 % | 4.38 % | 1.54 % |
| Ta2O5 | 0.21 % | 0.24 % | |
| FeO | 2.73 % | 3.92 % | |
| MnO | 6.36 % | 3.02 % | 8.25 % |
| MgO | 0.00 % | ||
| CaO | 7.84 % | 8.19 % | 1.89 % |
| SrO | 0.11 % | 13.98 % | |
| Na2O | 10.83 % | 7.71 % | 14.20 % |
| K2O | 0.21 % | 0.23 % | 0.41 % |
| F | 0.00 % | ||
| Cl | 0.80 % | 1.91 % | 0.26 % |
| H2O, det. | 0.86 % | ||
| CO2 | 0.99 % | ||
| -O=F | 0.00 % | ||
| -O=Cl | -0.13 % | ||
| SnO2 | 0.13 % | ||
| H2O | 0.59 % | 1.70 % | |
| O=Cl | -0.43 % | ||
| Fe2O3 | 2.40 % | ||
| –O?Cl | -0.06 % | ||
| Total: | 98.95 % | 96.08 % | 100.13 % |
Empirical formulas:
| Sample ID | Empirical Formula |
|---|---|
| 2 | (Na8.81Sr4.78K/sub>0.17Ce0.02)Σ13.78(Ca5.17Mn0.59Y0.09)Σ2.85(Fe1.93Mn0.92)Σ2.85(Zr2.84Nb0.11Hf0.05)Σ3.00(Nb1.06Ta004Sn0.03)Σ1.13Si24.55O73(O1.65OH0.75(H2O)0.74)Σ3.14(Cl1.91OH0.09)Σ2.00 |
| 3 | (Na12.93K0.27Ce0.06)[(Mn2.49Ce0.30Ca0.21)(Ce1.14Na1.04Ca0.82)](Mn1.05Fe0.90◻1.05)(Zr2.85Ti0.12Hf0.03)(◻0.40Nb0.36Si0.24)(Si0.88◻0.12)[Si24(O70.44(OH)1.56)][(OH)2.20(H2O)1.27]Cl0.22 |
Sample references:
| ID | Type | Locality | Reference | Notes |
|---|---|---|---|---|
| 1 | Sagåsen Quarry, Sagåsen, Auenlandet, Porsgrunn, Telemark, Norway | Microprobe, H2O by stoichometry, calculated assuming 2(OH+Cl) | ||
| 2 | Type Specimen | Taseqite occurrence, Taseq Slope, Ilímaussaq complex, Kujalleq, Greenland | Microprobe analysis | |
| 3 | Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada | Chukanov, Nikita V.; Zolotarev, Andrey A.; Schäfer, Christof; Varlamov, Dmitry A.; Pekov, Igor V.; Vigasina, Marina F.; Belakovskiy, Dmitry I.; Aksenov, Sergey M.; Vozchikova, Svetlana A.; Britvin, Sergey N. (2024) Amableite-(Ce), Na15[(Ce1.5Na1.5)Mn3]Mn2Zr3◻Si[Si24O69(OH)3](OH)2⋅H2O, a new eudialyte-group mineral from Saint-Amable Sill, Québec, Canada. Mineralogical Magazine, 88 (4). 369-379 doi:10.1180/mgm.2024.26 | by electron microprobe, with water measured using a modified Penfield method |
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0017801 | Manganoeudialyte | Nomura S F, Atencio D, Chukanov N V, Rastsvetaeva R K, Coutinho J M V, Karipidis T K (2010) Manganoeudialyte - a new mineral from Pocos de Caldas, Minas Gerais, Brazil Zapiski Rossiiskogo Mineralogicheskogo Obshchetstva 139 35-47 | 2010 | Pocos de Caldas massif, Minas Gerais, Brazil | 0 | 293 | |
| 0019916 | Davinciite | Rastsvetaeva R K, Rozenberg K A, Khomyakov A P (2009) Crystal structure of high-silica K,Na-ordered acentric eudialyte analogue Doklady Chemistry 424 11-14 | 2009 | Khibiny alkaline massif, Russia | 0 | 293 | |
| 0006070 | Johnsenite-(Ce) | Grice J C, Gault R A (2006) Johnsenite-(Ce): A new member of the eudialyte group from Mont Saint-Hilaire, Quebec, Canada The Canadian Mineralogist 44 105-115 |  | 2006 | Poudrette Quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada | 0 | 293 |
| 0019091 | Andrianovite | Rastsvetaeva R K, Rozenberg K A, Khomyakov A P (2005) Crystal structure of a K analogue of Kentbrooksite Doklady Chemistry 403 148-151 | 2005 | Koashva Mountain, Khibiny massif, Kola Peninsula, Russia | 0 | 293 | |
| 0012391 | Golyshevite | Rozenberg K A, Rastsvetaeva R K, Chukanov N V, Verin I A (2005) Crystal structure of golyshevite Crystallography Reports 50 539-543 | 2005 | Kovdor massif, Kola Peninsula, Russia | 0 | 293 | |
| 0014930 | Taseqite | Petersen O V, Johnsen O, Gault R A, Niedermayr G, Grice J D (2004) Taseqite, a new member of the eudialyte group from the Ilimaussaq alkaline complex, South Greenland Neues Jahrbuch fur Mineralogie, Monatshefte 2004 83-96 | 2004 | Ilimaussaq alkaline complex, South Greenland | 0 | 293 | |
| 0012386 | Ikranite | Rastsvetaeva R K, Chukanov N V (2003) Ikranite: composition and structure of a new mineral of the eudialyte group Crystallography Reports 48 717-720 | 2003 | Mount Karnasurt, Lovozero alkaline massif, Kola Peninsula, Russia | 0 | 293 | |
| 0012372 | Labyrinthite | Rastsvetaeva R K, Khomyakov A P (2001) Modular structure of a sodium-rich analogue of eudialyte with the doubled c-parameter and the R3 symmetry Crystallography Reports 46 752-757 | 2001 | Eveslogchorr mountain | 0 | 293 | |
| 0012503 | Georgbarsanovite | Ekimenkova I A, Rastsvetaeva R K, Khomyakov A P (2000) Crystal structure of the Fe,Cl-analogue of kentbrooksite Doklady Chemistry 370 17-20 | 2000 | Petrelius peak, Khibiny massif, Kola Peninsula, Russia | 0 | 293 | |
| 0012505 | Ikranite | Ekimenkova I A, Rastsvetaeva R K, Chukanov N V, Khasanov S S (2000) Crystal structure of an oxonium-containing analogue of eudialyte Doklady Chemistry 371 65-69 | 2000 | Karnasurt Mountains, Lovozero massif, Kola Peninsula, Russia | 0 | 293 | |
| 0012506 | Raslakite | Ekimenkova I A, Rastsvetaeva R K, Chukanov N V (2000) Ordering of calcium and iron in a mineral of the eudialyte group with the symmetry R3 Doklady Chemistry 374 195-198 | 2000 | Lovozero massif, Kola Peninsula, Russia | 0 | 293 | |
| 0005611 | Oneillite | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Mont Saint-Hilaire, Rouville County, Quebec, Canada | 0 | 293 |
| 0005612 | Khomyakovite | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Mont Saint-Hilaire, Rouville County, Quebec, Canada | 0 | 293 |
| 0012363 | Kentbrooksite | Rastsvetaeva R K, Khomyakov A P, Nekrasov Y V (1999) Crystal structure of a novel analog of eudialyte with R3 symmetry Crystallography Reports 44 765-769 | 1999 | Alluaiv mountain, Lovozero massif, Kola Peninsula, Russia | 0 | 293 | |
| 0005623 | Kentbrooksite | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Locality: Burpala massif, Siberia, Russia | 0 | 293 |
| 0005622 | Kentbrooksite | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Mont Saint-Hilaire, Rouville County, Quebec, Canada | 0 | 293 |
| 0005619 | Kentbrooksite | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Amdrup Fjord, Kangerdlugssuaq intrusion, Eastern Greenland | 0 | 293 |
| 0005610 | Kentbrooksite | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Mont Saint-Hilaire, Rouville County, Quebec, Canada | 0 | 293 |
| 0005609 | Kentbrooksite | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Mont Saint-Hilaire, Rouville County, Quebec, Canada | 0 | 293 |
| 0005621 | Eudialyte | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Illimaussaq complex, South Greenland | 0 | 293 |
| 0005618 | Eudialyte | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Gardiner complex, East Greenland | 0 | 293 |
| 0005617 | Eudialyte | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Gardiner complex, East Greenland | 0 | 293 |
| 0005616 | Eudialyte | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Gardiner complex, East Greenland | 0 | 293 |
| 0005615 | Eudialyte | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Saint-Amable sill, Varennes, Verchares County, Canada | 0 | 293 |
| 0005614 | Eudialyte | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Kipawa alkaline complex, Villedieu township, Temiscaminque County, Quebec, Canada | 0 | 293 |
| 0005613 | Eudialyte | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Kipawa alkaline complex, Villedieu township, Temiscaminque County, Quebec, Canada | 0 | 293 |
| 0005608 | Eudialyte | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Mont Saint-Hilaire, Rouville County, Quebec, Canada | 0 | 293 |
| 0005607 | Eudialyte | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group The Canadian Mineralogist 37 865-891 | | 1999 | Mont Saint-Hilaire, Rouville County, Quebec, Canada | 0 | 293 |
| 0006713 | Kentbrooksite | Johnsen O, Grice J D, Gault R A (1998) Kentbrooksite from the Kangerdlugssuaq intrusion, East Greenland, a new Mn-REE-Nb-F end-member in a series within the eudialyte group: Description and crystal structure European Journal of Mineralogy 10 207-219 | 1998 | Kangerdlugssuaq intrusion, East Greenland | 0 | 293 | |
| 0005620 | Eudialyte | Johnsen O, Grice J D (1999) The crystal chemistry of the eudialyte group Loclaity: Narssarssuk pegmatite, South Greenland The Canadian Mineralogist 37 865-891 | | 1999 | 0 | 293 | |
| 0012482 | Alluaivite | Rastsvetaeva R K, Khomyakov A P, Andrianov V I, Gusev A I (1990) Crystal structure of alluaivite Doklady Akademii Nauk SSSR 312 1379-1383 | 1990 | 0 | 293 |
CIF Raw Data - click here to close
Synonyms of Eudialyte Group
Other Language Names for Eudialyte Group
Varieties of Eudialyte Group
Relationship of Eudialyte Group to other Species
Eudialyte Group Members:
| Alluaivite | Na19(Ca,Mn)6(Ti,Nb)3Si26O74Cl · 2H2O | Trig. 3m(32/m) : R3m |
| Amableite-(Ce) | Na15[(Ce1.5Na1.5)Mn3]Mn2Zr3◻Si[Si24O69(OH)3](OH)2 · H2O | Trig. 3 : R3 |
| Andrianovite | Na12(K,Sr,Ce)3Ca6Mn3Zr3Nb(Si25O73)(O,H2O,OH)5 | Trig. 3m : R3m |
| Aqualite | (H3O)8(Na,K,Sr)5Ca6Zr3Si26O66(OH)9Cl | Trig. 3 : R3 |
| Carbokentbrooksite | (Na3Na3Na3Na3Na3)Ca6(VMn2+3)Zr3[Si3O9]2[Si9O27SiO][Si9O27Nb(OH)3](CO3)(H2O) | Trig. 3m : R3m |
| Davinciite | Na12K3Ca6Fe2+3Zr3(Si26O73OH)Cl2 | Trig. 3m : R3m |
| Dualite | Na30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3Mn[Si51O144](OH,H2O,Cl)9 | Trig. 3m : R3m |
| Eudialyte | Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2 | Trig. 3m(32/m) : R3m |
| Feklichevite | Na11Ca9(Fe3+,Fe2+)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5 | Trig. 3m : R3m |
| Fengchengite | Na12◻3(Ca,Sr)6Fe3+3 Zr3Si(Si25O73)(H2O,OH)3(OH,Cl)2 | Trig. 3m(32/m) : R3m |
| Ferrokentbrooksite | Na15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3Cl2 | Trig. 3m : R3m |
| Georgbarsanovite | Na12(Mn,Sr,REE)3Ca6Fe2+3Zr3NbSi25O76Cl2 · H2O | Trig. 3m : R3m |
| Golyshevite | Na10Ca3Ca6Zr3Fe2SiNb(Si3O9)2(Si9O27)2CO3(OH)3 · H2O | Trig. 3m : R3m |
| 'Hydrorastsvetaevite' | (Na11(H3O)11K6(H2O)1.5Sr)Ca12Fe3Na2MnZr6Si52O144(OH)4.5Cl3.5 | Trig. 3m : R3m |
| Ikranite | (Na,H3O)15(Ca,Mn2+)6Fe3+2Zr3[H0-3Si3O9)2(Si9O27)2SiO]Cl · 2-3H2O | Trig. 3m : R3m |
| Ilyukhinite | (H3O,Na)14Ca6Mn2Zr3Si26O72(OH)2 · 3H2O | Trig. 3m : R3m |
| Johnsenite-(Ce) | Na12(Ce2Ca)Ca6Mn3Zr3[Si3O9]2[Si9O27SiO][Si9O27W(O)3](CO3)(OH,Cl)2 | Trig. 3m : R3m |
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada