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Fogoite-(Y)
A valid IMA mineral species
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About Fogoite-(Y)
Formula:
Na3Ca2Y2Ti(Si2O7)2OF3
Colour:
Colourless; creamy white
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
3.523 (Calculated)
Crystal System:
Triclinic
Member of:
Name:
Named for the type locality - Lagoa do Fogo / Fogo volcano.
Type Locality:
Isostructural with:
Chemically close to hainite. May also be compared to batievaite-(Y), which however is devoid of dominant Na.
The structure is, as of many Ti silicates, built of TS (Titanium Silicate) blocks, comprising HOH sheets (H for heteropolyhedral, O for octahedral); HOH || (100). The O sheet, ideal composition Na3Ti(OF)F2, comprises:
- the [6]MO(1) site, mainly Ti
- the [6]MO(2) and [6]MO(3): Na and Na(Mn)
The H sheet, ideal composition Y2Ca2(Si2O7)2, comprises:
- two tetrahedral Si sites, forming disilicate groups
- the [6]MH site: Y(REE,Mn,Zr,etc.)
- the [6]AP site: Ca, = 2.416 Ă .
The structure is, as of many Ti silicates, built of TS (Titanium Silicate) blocks, comprising HOH sheets (H for heteropolyhedral, O for octahedral); HOH || (100). The O sheet, ideal composition Na3Ti(OF)F2, comprises:
- the [6]MO(1) site, mainly Ti
- the [6]MO(2) and [6]MO(3): Na and Na(Mn)
The H sheet, ideal composition Y2Ca2(Si2O7)2, comprises:
- two tetrahedral Si sites, forming disilicate groups
- the [6]MH site: Y(REE,Mn,Zr,etc.)
- the [6]AP site: Ca, = 2.416 Ă .
Unique Identifiers
Mindat ID:
46576
Long-form identifier:
mindat:1:1:46576:2
Similar Names
IMA Classification of Fogoite-(Y)
Classification of Fogoite-(Y)
9.BE.22
9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Fog-Y | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Fogoite-(Y)
Vitreous
Transparency:
Transparent
Colour:
Colourless; creamy white
Comment:
generally transparent
Streak:
White
Hardness:
5 on Mohs scale
Comment:
ca. 5
Cleavage:
Very Good
{100}
{100}
Fracture:
Splintery
Density:
3.523 g/cm3 (Calculated)
Optical Data of Fogoite-(Y)
Type:
Biaxial (+)
RI values:
nα = 1.686(2) nβ = 1.690(2) nγ = 1.702(5)
2V:
Measured: 57° (1), Calculated: 60°
Max. Birefringence:
δ = 0.016
Based on recorded range of RI values above.
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 ”m 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.
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 ”m 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:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
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 biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Optical Extinction:
X ⧠a = 100.5°, X ⧠b = 20.0°, X ⧠c = 2.1°.
Y ⧠a = 100.8°, Y ⧠b = 2.1°, Y ⧠c = 88.0°.
Z ⧠a = 164.9°, Z ⧠b = 89.1°, Z ⧠c = 89.9°.
Y ⧠a = 100.8°, Y ⧠b = 2.1°, Y ⧠c = 88.0°.
Z ⧠a = 164.9°, Z ⧠b = 89.1°, Z ⧠c = 89.9°.
Pleochroism:
Non-pleochroic
Chemistry of Fogoite-(Y)
Mindat Formula:
Na3Ca2Y2Ti(Si2O7)2OF3
Element Weights:
Common Impurities:
Mn,Nb
Crystallography of Fogoite-(Y)
Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Cell Parameters:
a = 9.575(6) Å, b = 5.685(4) Å, c = 7.279(5) Å
α = 89.985(6)°, β = 100.933(4)°, γ = 101.300(5)°
α = 89.985(6)°, β = 100.933(4)°, γ = 101.300(5)°
Ratio:
a:b:c = 1.684 : 1 : 1.28
Unit Cell V:
381.2 Ă
Âł
Z:
1
Morphology:
.Prisms, elongated on [001]
Twinning:
twinned
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.960 Ă | (23) |
| 3.069 Ă | (42) |
| 2.954 Ă | (100) |
| 2.626 Ă | (21) |
| 2.486 Ă | (24) |
| 2.195 Ă | (17) |
| 1.893 Ă | (23) |
| 1.820 Ă | (20) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Fogoite-(Y)
General Appearance of Type Material:
Highly elongated [001] prisms, [001] elongation, up to 2 mm in length, up to 50 x 50 ÎŒm in cross-section.
Place of Conservation of Type Material:
Museo Regionale di Scienze Naturali di Torino, Torino, Italy, numbers M/U 16800 and M/U 16801.
Royal Ontario Museum, Toronto, Ontario, Canada, number M56826
MusĂ©um National dâHistoire Naturelle of Paris, France, number MIN2015-003.
Royal Ontario Museum, Toronto, Ontario, Canada, number M56826
MusĂ©um National dâHistoire Naturelle of Paris, France, number MIN2015-003.
Geological Setting of Type Material:
Peralkaline volcanic rocks.
Associated Minerals at Type Locality:
Synonyms of Fogoite-(Y)
Other Language Names for Fogoite-(Y)
Dutch:Fogoiet-(Y)
German:Fogoit-(Y)
Relationship of Fogoite-(Y) to other Species
Member of:
Other Members of Rinkite Group:
| Batievaite-(Y) | Y2Ca2Ti(Si2O7)2(OH)2(H2O)4 | Tric. 1 : P1 |
| Bortolanite | Ca2(Ca1.5Zr0.5)Na(NaCa)Ti(Si2O7)2(OF)F2 | Tric. 1 : P1 |
| Götzenite | NaCa6Ti(Si2O7)2OF3 | Tric. 1 : P1 |
| Grenmarite | Na4MnZr3(Si2O7)2O2F2 | Mon. 2/m : P2/b |
| Hainite-(Y) | Na2Ca4(Y,REE)Ti(Si2O7)2OF3 | Tric. 1 : P1 |
| Kochite | Na3Ca2MnZrTi(Si2O7)2OF3 | Tric. 1 : P1 |
| Mosandrite-(Ce) | (Ca3REE)[(H2O)2Ca0.5â»0.5]Ti(Si2O7)2(OH)2(H2O)2 | Mon. 2/m : P21/c |
| Nacareniobsite-(Ce) | Na3Ca3(Ce,REE)Nb(Si2O7)2OF3 | Mon. 2/m : P21/c |
| Nacareniobsite-(Y) | Na3Ca3YNb(Si2O7)2OF3 | Mon. 2/m : P21/c |
| Rinkite-(Ce) | (Ca3Ce)Na(NaCa)Ti(Si2O7)2(OF)F2 | Mon. 2/m : P21/c |
| Rinkite-(Y) | Na2Ca4YTi(Si2O7)2OF3 | Mon. 2/m : P21/c |
| Rosenbuschite | Na6Ca6Zr3Ti(Si2O7)4O2F6 | Tric. 1 : P1 |
| Roumaite | (Ca,Na,REE,â»)7(Nb,Ti)[Si2O7]2OF3 | Mon. m : Bb |
| Seidozerite | Na4MnZr2Ti(Si2O7)2O2F2 | Mon. 2/m : P2/b |
| 'Unnamed (Ca-deficient Mosandrite)' | (Ca1.2REE0.9Th0.1Zn0.1Al0.1Na0.2K0.1)((H2O)2â»)(Ti,Nb)(Si2O7)2(OH,F,Cl)2(H2O)2 |
Common Associates
Associations Based on Photo Data:
| 4 photos of Fogoite-(Y) associated with Astrophyllite | K2NaFe2+7Ti2[Si4O12]2O2(OH)4F |
| 3 photos of Fogoite-(Y) associated with Fluornatropyrochlore | (Na,Pb,Ca,REE,U)2Nb2O6F |
| 2 photos of Fogoite-(Y) associated with Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
| 1 photo of Fogoite-(Y) associated with Zircon | Zr(SiO4) |
| 1 photo of Fogoite-(Y) associated with Ferro-katophorite | Na(CaNa)(Fe2+4Al)(AlSi7O22)(OH)2 |
| 1 photo of Fogoite-(Y) associated with Aegirine | NaFe3+Si2O6 |
| 1 photo of Fogoite-(Y) associated with Sanidine | K(AlSi3O8) |
Related Minerals - Strunz-mindat Grouping
| 9.BE. | Zinkgruvanite | Ba4Mn2+4Fe3+2(Si2O7)2(SO4)2O2(OH)2 |
| 9.BE. | Calciomurmanite | (Na,â»)2Ca(Ti,Mg,Nb)4[Si2O7]2O2(OH,O)2(H2O)4 |
| 9.BE. | CĂĄmaraite | Ba3Na(Fe2+,Mn)8Ti4(Si2O7)4O4(OH,F)7 |
| 9.BE. | Alfredcasparite | Sr2TiO(Si2O7) |
| 9.BE. | Batievaite-(Y) | Y2Ca2Ti(Si2O7)2(OH)2(H2O)4 |
| 9.BE. | Nacareniobsite-(Y) | Na3Ca3YNb(Si2O7)2OF3 |
| 9.BE. | Alexkuznetsovite-(Ce) | Ce2Mn(CO3)(Si2O7) |
| 9.BE. | Bobshannonite | Na2KBa(Mn,Na)8(Nb,Ti)4(Si2O7)4O4(OH)4(O,F)2 |
| 9.BE. | Paralomonosovite | Na6â»4Ti4(Si2O7)2[PO3OH][PO2(OH)2]O2(OF) |
| 9.BE. | Madeiraite | Na2Ca2Fe2Zr2(Si2O7)2O2F2 |
| 9.BE. | Bortolanite | Ca2(Ca1.5Zr0.5)Na(NaCa)Ti(Si2O7)2(OF)F2 |
| 9.BE. | Longshoushanite-(Ce) | Ce4MgAl2Ti2(Si2O7)2O8 |
| 9.BE. | Moxuanxueite | NaCa6Zr(Si2O7)2OF3 |
| 9.BE. | Delhuyarite-(Ce) | Ce4Mg(Fe3+,W)3â»(Si2O7)2O6(OH)2 |
| 9.BE. | ChristofschÀferite-(Ce) | Ce3CaMnTiFe3+Ti2(Si2O7)2O8 |
| 9.BE.X | Asimowite | Fe2+4O(Si2O7) |
| 9.BE. | Biraite-(La) | La2Fe2+(CO3)(Si2O7) |
| 9.BE. | Pilanesbergite | Na2Ca2Fe2Ti2(Si2O7)2O2F2 |
| 9.BE.02 | Wadsleyite | Mg4O(Si2O7) |
| 9.BE.02 | Ohtaniite | Mg3(Si0.5â»0.5)Si2O8 |
| 9.BE.05 | Lawsonite | CaAl2(Si2O7)(OH)2 · H2O |
| 9.BE.05 | Hennomartinite | SrMn3+2(Si2O7)(OH)2 · H2O |
| 9.BE.05 | Cortesognoite | CaV2(Si2O7)(OH)2 · H2O |
| 9.BE.05 | Noelbensonite | BaMn3+2(Si2O7)(OH)2 · H2O |
| 9.BE.05 | Itoigawaite | SrAl2(Si2O7)(OH)2 · H2O |
| 9.BE.07 | Ilvaite | CaFe3+Fe2+2(Si2O7)O(OH) |
| 9.BE.07 | Amamoorite | CaMn2+2Mn3+(Si2O7)O(OH) |
| 9.BE.07 | Manganilvaite | CaFe2+Fe3+Mn2+(Si2O7)O(OH) |
| 9.BE.10 | Suolunite | Ca2(H2Si2O7) · H2O |
| 9.BE.12 | Jaffeite | Ca6(Si2O7)(OH)6 |
| 9.BE.15 | Fresnoite | Ba2Ti(Si2O7)O |
| 9.BE.17 | Janhaugite | (Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2 |
| 9.BE.17 | Burpalite | Na2CaZr(Si2O7)F2 |
| 9.BE.17 | Niocalite | (Ca,Nb)4(Si2O7)(O,OH,F)2 |
| 9.BE.17 | Normandite | NaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OF |
| 9.BE.17 | Hiortdahlite | Na2Ca4(Ca0.5Zr0.5)Zr(Si2O7)2OF3 |
| 9.BE.17 | LĂ„venite | Na2Ca2Mn2Zr2(Si2O7)2O2F2 |
| 9.BE.17 | Cuspidine | Ca8(Si2O7)2F4 |
| 9.BE.17 | Wöhlerite | Na2Ca4ZrNb(Si2O7)2O3F |
| 9.BE.17 | Baghdadite | Ca6Zr2(Si2O7)2O4 |
| 9.BE.20 | Nacareniobsite-(Ce) | Na3Ca3(Ce,REE)Nb(Si2O7)2OF3 |
| 9.BE.20 | Roumaite | (Ca,Na,REE,â»)7(Nb,Ti)[Si2O7]2OF3 |
| 9.BE.20 | Rinkite-(Ce) | (Ca3Ce)Na(NaCa)Ti(Si2O7)2(OF)F2 |
| 9.BE.20 | Nacareniobsite-(Nd) | Ca2(CaNd)Na3Nb(Si2O7)2(OF)F2 |
| 9.BE.20 | Rinkite-(Y) | Na2Ca4YTi(Si2O7)2OF3 |
| 9.BE.20 | Mosandrite-(Ce) | (Ca3REE)[(H2O)2Ca0.5â»0.5]Ti(Si2O7)2(OH)2(H2O)2 |
| 9.BE.22 | Hainite-(Y) | Na2Ca4(Y,REE)Ti(Si2O7)2OF3 |
| 9.BE.22 | Rosenbuschite | Na6Ca6Zr3Ti(Si2O7)4O2F6 |
| 9.BE.22 | Götzenite | NaCa6Ti(Si2O7)2OF3 |
| 9.BE.22 | Kochite | Na3Ca2MnZrTi(Si2O7)2OF3 |
| 9.BE.23 | Dovyrenite | Ca6Zr(Si2O7)2(OH)4 |
| 9.BE.25 | Lamprophyllite | (Na,Mn2+)3(Sr,Na)2(Ti,Fe3+)3(Si2O7)2O2(OH,O,F)2 |
| 9.BE.25 | Seidozerite | Na4MnZr2Ti(Si2O7)2O2F2 |
| 9.BE.25 | Nabalamprophyllite | (BaNa)Ti2Na3Ti(Si2O7)2O2(OH)2 |
| 9.BE.25 | SchĂŒllerite | Ba2Na(Mn,Ca)(Fe3+,Mg,Fe2+)2Ti2(Si2O7)2(O,F)4 |
| 9.BE.25 | Ericssonite | BaMn2+2Fe3+(Si2O7)O(OH) |
| 9.BE.25 | Grenmarite | Na4MnZr3(Si2O7)2O2F2 |
| 9.BE.25 | Kazanskyite | BaNa3Ti2Nb(Si2O7)2O2(OH)2(H2O)4 |
| 9.BE.25 | Saamite | Baâ»Na3Ti2Nb(Si2O7)2O2(OH)F(H2O)2 |
| 9.BE.25 | Emmerichite | Ba2Na(Na,Fe2+)2(Fe3+,Mg)Ti2(Si2O7)2O2F2 |
| 9.BE.25 | Barytolamprophyllite | (Ba,Na)2(Na,Ti,Fe3+)4Ti2(Si2O7)2O(OH,F) |
| 9.BE.25 | 'Ericssonite-2O' | BaMn2+2Fe3+(Si2O7)O(OH) |
| 9.BE.25 | Fluorbarytolamprophyllite | (Ba,Sr)2[(Na,Fe2+)3(Ti,Mg)F2][Ti2(Si2O7)2O2] |
| 9.BE.25 | Fluorlamprophyllite | Na3(SrNa)Ti3(Si2O7)2O2F2 |
| 9.BE.25 | Lileyite | Ba2(Na,Fe,Ca)3MgTi2(Si2O7)2O2F2 |
| 9.BE.27 | Kolskyite | CaNa2Ti4(Si2O7)2O4(H2O)7 |
| 9.BE.27 | Vigrishinite | NaZnTi4(Si2O7)2O3(OH)(H2O)4 |
| 9.BE.27 | Selivanovaite | NaFe3+Ti4(Si2O7)2O4(H2O)4 |
| 9.BE.27 | Murmanite | Na2Ti2(Si2O7)O2 · 2H2O |
| 9.BE.30 | Epistolite | (Naâ»)Nb2Na3Ti(Si2O7)2O2(OH)2(H2O)4 |
| 9.BE.32 | Lomonosovite | Na5Ti2(Si2O7)(PO4)O2 |
| 9.BE.35 | Vuonnemite | Na11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH) |
| 9.BE.37 | Sobolevite | Na13Ca2Mn2Ti3(Si2O7)2(PO4)4O3F3 |
| 9.BE.40 | Ferroinnelite | Ba4Ti2Na(NaFe2+)Ti(Si2O7)2[(SO4)(PO4)]O2[O(OH)] |
| 9.BE.40 | Phosphoinnelite | Na3Ba4Ti3(Si2O7)2(PO4,SO4)2O2F |
| 9.BE.40 | Innelite | Ba4Ti2Na(NaMn2+)Ti(Si2O7)2[(SO4)(PO4)]O2[O(OH)] |
| 9.BE.42 | Yoshimuraite | Ba2Mn2Ti(Si2O7)(PO4)O(OH) |
| 9.BE.42 | Horiite | Ba2Mn2Mn4Ti2(Si2O7)2(PO4)2O2(OH)2 |
| 9.BE.45 | Quadruphite | Na6Na2(CaNa)2Na2Ti2Na2Ti2(Si2O7)2(PO4)4O4F2 |
| 9.BE.47 | Polyphite | Na5(Na4Ca2)Ti2(Si2O7)(PO4)3O2F2 |
| 9.BE.50 | Shkatulkalite | Na2Nb2Na3Ti(Si2O7)2O2(FO)(H2O)4(H2O)3 |
| 9.BE.50 | Bornemanite | Na6BaTi2Nb(Si2O7)2(PO4)O2(OH)F |
| 9.BE.55 | Hejtmanite | Ba2Mn2+4Ti2(Si2O7)2O2(OH)2F2 |
| 9.BE.55 | Bykovaite | (Ba,Na,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(H2O,F,OH)2 · 3.5H2O |
| 9.BE.55 | Nechelyustovite | (Ba,Sr,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(O,H2O,F)2 · 4.5H2O |
| 9.BE.55 | Bafertisite | Ba2Fe2+4Ti2(Si2O7)2O2(OH)2F2 |
| 9.BE.60 | Delindeite | (Na,K)2(Ba,Ca)2(Ti,Fe,Al)3(Si2O7)2O2(OH)2 · 2H2O |
| 9.BE.62 | 'Orthochevkinite' | (Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22 |
| 9.BE.62 va | 'Strontium Perrierite' | (Ce,Sr,La,Ca)4Fe2+(Ti,Zr,Fe)2Ti2(Si2O7)2O8 |
| 9.BE.62 | 'Chevkinite-(Nd)' | (Nd,REE)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8 ? |
| 9.BE.62 | 'Perrierite-(Nd)' | Nd4MgFe3+2Ti2(Si2O7)2O8 ? |
| 9.BE.65 | Bussenite | Na2Ba2Fe2+Ti(Si2O7)(CO3)(OH)3F |
| 9.BE.67 | Jinshajiangite | BaNaFe2+4Ti2(Si2O7)2O2(OH)2F |
| 9.BE.67 | Perraultite | BaNaMn2+4Ti2(Si2O7)2O2(OH)2F |
| 9.BE.70 | Dingdaohengite-(Ce) | (Ce,La)4Fe2+(Ti,Fe2+,Mg,Fe3+)2Ti2(Si2O7)2O8 |
| 9.BE.70 | Perrierite-(Ce) | Ce4MgFe3+2Ti2(Si2O7)2O8 |
| 9.BE.70 | Karnasurtite-(Ce) | (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 · 3H2O |
| 9.BE.70 | Maoniupingite-(Ce) | (Ce,Ca)4(Fe3+,Ti,Fe2+,â»)(Ti,Fe3+,Fe2+,Nb)4(Si2O7)2O8 |
| 9.BE.70 | Matsubaraite | Sr4Ti5(Si2O7)2O8 |
| 9.BE.70 | Rengeite | Sr4ZrTi4(Si2O7)2O8 |
| 9.BE.70 | Polyakovite-(Ce) | (Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8 |
| 9.BE.70 | Hezuolinite | (Sr,REE)4Zr(Ti,Fe3+)4(Si2O7)2O8 |
| 9.BE.70 | 'UM2008-53-SiO:SrTiZr' | Sr4ZrTi4(Si2O7)2O8 |
| 9.BE.70 | Chevkinite-(Ce) | Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2 |
| 9.BE.70 | Perrierite-(La) | (La,Ce,Ca)4(Fe2+,Mn)(Ti,Fe3+,Al)4[(Si2O7)O4]2 |
| 9.BE.70 | Strontiochevkinite | (Sr,La,Ce,Ca)4Fe2+(Ti,Zr)2Ti2(Si2O7)2O8 |
| 9.BE.72 | Fersmanite | Ca4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3 |
| 9.BE.75 | Belkovite | Ba3(Nb,Ti)6(Si2O7)2O12 |
| 9.BE.77 | Nasonite | Pb6Ca4(Si2O7)3Cl2 |
| 9.BE.80 | Melanotekite | Pb2Fe3+2(Si2O7)O2 |
| 9.BE.80 | Kentrolite | Pb2Mn3+2(Si2O7)O2 |
| 9.BE.82 | Alexkuznetsovite-(La) | La2Mn(CO3)(Si2O7) |
| 9.BE.82 | Tilleyite | Ca5(Si2O7)(CO3)2 |
| 9.BE.85 | Killalaite | Ca6.4(H0.6Si2O7)2(OH)2 |
| 9.BE.87 | Stavelotite-(La) | (La,Nd,Ca)3Mn2+3Cu(Mn3+,Fe3+,Mn4+)26(Si2O7)6O30 |
| 9.BE.90 | Magnesiorowlandite-(Y) | Y4(Mg,Fe)(Si2O7)2F2 |
| 9.BE.90 | Biraite-(Ce) | Ce2Fe2+(Si2O7)(CO3) |
| 9.BE.92 | Cervandonite-(Ce) | (Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH) |
| 9.BE.92 | Chirvinskyite | (Na,Ca)13(Fe,Mn,â»)2(Ti,Zr)5(Si2O7)4(OH,O)12 · 2H2O |
| 9.BE.95 | Rusinovite | Ca10(Si2O7)3Cl2 |
| 9.BE.95 | Batisivite | BaV3+8Ti6(Si2O7)O22 |
| 9.BE.97 | SchlĂŒterite-(Y) | (Y,REE)2AlSi2O7(OH)2F |
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.
Internet Links for Fogoite-(Y)
mindat.org URL:
https://www.mindat.org/min-46576.html
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References for Fogoite-(Y)
Reference List:
HĂ„lenius, U., Hatert, F., Pasero, M., Mills, S. J. (2015) New minerals and nomenclature modifications approved in 2015, CNMNC Newsletter No 24. Mineralogical Magazine, 79 (2) 247-251 doi:10.1180/minmag.2015.079.2.03
CĂĄmara, F., Sokolova, E., Abdu, Y. A., Hawthorne, F. C., Charrier, T., Dorcet, V., Carpentier, J. -F. (2017) Fogoite-(Y), Na3Ca2Y2Ti(Si2O7)2OF3, a Group I TS-block mineral from the Lagoa do Fogo, the Fogo volcano, SĂŁo Miguel Island, the Azores: Description and crystal structure. Mineralogical Magazine, 81 (2) 369-381 doi:10.1180/minmag.2016.080.103
Sokolova, E.; CĂĄmara, F. (2017) The seidozerite supergroup of TS-block minerals: nomenclature and classification, with change of the following names: rinkite to rinkite-(Ce), mosandrite to mosandrite-(Ce), hainite to hainite-(Y) and innelite-1T to innelite-1A. Mineralogical Magazine, 81 (6). p.1457-1484. doi:10.1180/minmag.2017.081.010
Localities for Fogoite-(Y)
Showing 3 localities.
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The Locality List
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- This locality has estimated coordinates.
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? - Indicates mineral may be doubtful at this locality.
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(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Portugal | |
| Lavarde et al. (2019) |
| HĂ„lenius et al. (2015) +1 other reference |
| Alves (n.d.) |
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Ruins of Lombadas syenite xenolith occurrence, Ribeira Grande, SĂŁo Miguel, Azores, Portugal