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Götzenite

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About GötzeniteHide

Count Gustav Adolf von Götzen
Formula:
NaCa6Ti(Si2O7)2OF3
Colour:
Very pale yellow, tan, off-white, colorless, white.
Lustre:
Vitreous, Greasy
Hardness:
5½ - 6
Specific Gravity:
3.03 - 3.14
Crystal System:
Triclinic
Name:
Named for Gustav Adolf von Götzen (1866-1910), German traveler who was the first European to climb Mt. Shaheru, North Kivu, Zaire (in 1894, together with a German companion), the Type Locality for the species.
This page provides mineralogical data about Götzenite.


Classification of GötzeniteHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:
1957
9.BE.22

9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
Dana 7th ed.:
56.2.5.4
56.2.5.4

56 : SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
2 : Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
17.2.7

17 : Silicates Containing other Anions
2 : Silicates with fluoride

Physical Properties of GötzeniteHide

Vitreous, Greasy
Transparency:
Transparent
Colour:
Very pale yellow, tan, off-white, colorless, white.
Comment:
Colorless in thin section (TL)
Streak:
White
Hardness:
5½ - 6 on Mohs scale
Cleavage:
Perfect
Perfect on {100}, good on {001}
Density:
3.03 - 3.14 g/cm3 (Measured)    2.84 g/cm3 (Calculated)

Optical Data of GötzeniteHide

Type:
Biaxial (+)
RI values:
nα = 1.651 - 1.662 nβ = 1.653 - 1.665 nγ = 1.659 - 1.672
2V:
Measured: 38° to 74°, Calculated: 62° to 68°
Max Birefringence:
δ = 0.008 - 0.010
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v strong

Chemical Properties of GötzeniteHide

Formula:
NaCa6Ti(Si2O7)2OF3
IMA Formula:
Ca4NaCa2Ti(Si2O7)2(OF)F2

Crystallography of GötzeniteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 9.667 Å, b = 5.731 Å, c = 7.334 Å
α = 90°, β = 101.05°, γ = 101.31°
Ratio:
a:b:c = 1.687 : 1 : 1.28
Unit Cell V:
390.74 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Prismatic, acicular, skeletal.
Twinning:
Lamellar twinning on {001}
ubiquitous

Type Occurrence of GötzeniteHide

General Appearance of Type Material:
As prismatic crystals up to 0,5 mm long.
Place of Conservation of Type Material:
Smithsonian 142981
Geological Setting of Type Material:
Nephelinite
Associated Minerals at Type Locality:

Synonyms of GötzeniteHide

Other Language Names for GötzeniteHide

German:Götzenit
Simplified Chinese:氟硅钙钛矿
Spanish:Götzenita
Traditional Chinese:氟矽鈣鈦礦

Relationship of Götzenite to other SpeciesHide

Other Members of this group:
Batievaite-(Y)Y2Ca2Ti(Si2O7)2(OH)2(H2O)4Tric. 1 : P1
Fogoite-(Y)Na3Ca2Y2Ti(Si2O7)2OF3Tric. 1 : P1
GrenmariteNa4MnZr3(Si2O7)2O2F2Mon. 2/m : P2/b
Hainite-(Y)Na2Ca4(Y,REE)Ti(Si2O7)2OF3Tric. 1 : P1
KochiteNa3Ca2MnZrTi(Si2O7)2OF3Tric. 1 : P1
Mosandrite-(Ce)(Ca3REE)[(H2O)2Ca0.50.5]Ti(Si2O7)2(OH)2(H2O)2Mon. 2/m : P21/b
Nacareniobsite-(Ce)NbNa3Ca3(Ce,REE )(Si2O7)2OF3Mon.
Rinkite-(Ce)(Ca3Ce)Na(NaCa)Ti(Si2O7)2(OF)F2Mon.
Rinkite-(Y)Na2Ca4YTi(Si2O7)2OF3Mon. 2/m : P21/b
RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6Tric. 1 : P1
Roumaite(Ca,Na,REE,◻)7(Nb,Ti)[Si2O7]2OF3Mon. m : Bb
SeidozeriteNa4MnZr2Ti(Si2O7)2O2F2Mon.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Fluorite8 photos of Götzenite associated with Fluorite on mindat.org.
Aegirine4 photos of Götzenite associated with Aegirine on mindat.org.
Calcite3 photos of Götzenite associated with Calcite on mindat.org.
Gonnardite2 photos of Götzenite associated with Gonnardite on mindat.org.
Nepheline2 photos of Götzenite associated with Nepheline on mindat.org.
Pectolite1 photo of Götzenite associated with Pectolite on mindat.org.
Andradite1 photo of Götzenite associated with Andradite on mindat.org.
Ancylite Group1 photo of Götzenite associated with Ancylite Group on mindat.org.
Eudialyte1 photo of Götzenite associated with Eudialyte on mindat.org.
Astrophyllite1 photo of Götzenite associated with Astrophyllite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.BE.02Wadsleyite(Mg,Fe2+)2(SiO4)Orth.
9.BE.05HennomartiniteSrMn3+2(Si2O7)(OH)2 · H2OOrth.
9.BE.05LawsoniteCaAl2(Si2O7)(OH)2 · H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
9.BE.05NoelbensoniteBaMn3+2(Si2O7)(OH)2 · H2OOrth.
9.BE.05ItoigawaiteSrAl2(Si2O7)(OH)2 · H2OOrth.
9.BE.07IlvaiteCaFe3+Fe2+2(Si2O7)O(OH)Orth. mmm (2/m 2/m 2/m)
9.BE.07ManganilvaiteCaFe2+Fe3+Mn2+(Si2O7)O(OH)Mon. 2/m : P21/b
9.BE.10SuoluniteCa2(H2Si2O7) · H2OOrth.
9.BE.12JaffeiteCa6(Si2O7)(OH)6Trig. 3 : P3
9.BE.15FresnoiteBa2Ti(Si2O7)OTet.
9.BE.17BaghdaditeCa3(Zr,Ti)(Si2O7)O2Mon.
9.BE.17BurpaliteNa2CaZr(Si2O7)F2Mon.
9.BE.17CuspidineCa4(Si2O7)(F,OH)2Mon. 2/m : P21/b
9.BE.17Hiortdahlite(Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4 Tric.
9.BE.17Janhaugite(Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2Mon. 2/m : P21/m
9.BE.17Låvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2Mon. 2/m : P21/b
9.BE.17Niocalite(Ca,Nb)4(Si2O7)(O,OH,F)2Mon.
9.BE.17NormanditeNaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OFMon. 2/m : P21/b
9.BE.17WöhleriteNaCa2(Zr,Nb)(Si2O7)(O,OH,F)2Mon. 2 : P21
9.BE.17Hiortdahlite INa4Ca8Zr2(Nb,Mn,Ti,Fe,Mg,Al)2(Si2O7)4O3F5
9.BE.17MarianoiteNa2Ca4(Nb,Zr)2(Si2O7)2(O,F)4Mon. 2 : P21
9.BE.20Mosandrite-(Ce)(Ca3REE)[(H2O)2Ca0.50.5]Ti(Si2O7)2(OH)2(H2O)2Mon. 2/m : P21/b
9.BE.20Nacareniobsite-(Ce)NbNa3Ca3(Ce,REE )(Si2O7)2OF3Mon.
9.BE.22Hainite-(Y)Na2Ca4(Y,REE)Ti(Si2O7)2OF3Tric. 1 : P1
9.BE.22RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6Tric. 1 : P1
9.BE.22KochiteNa3Ca2MnZrTi(Si2O7)2OF3Tric. 1 : P1
9.BE.23DovyreniteCa6Zr(Si2O7)2(OH)4Orth. mmm (2/m 2/m 2/m) : Pnnm
9.BE.25Barytolamprophyllite(Ba,Na)2(Na,Ti,Fe3+)4Ti2(Si2O7)2O(OH,F)Mon.
9.BE.25EricssoniteBaMn2+2Fe3+(Si2O7)O(OH)Mon. 2/m : B2/m
9.BE.25Lamprophyllite(Na,Mn2+)3(Sr,Na)2(Ti,Fe3+)3(Si2O7)2O2(OH,O,F)2Mon.
9.BE.25Ericssonite-2OBaMn2+2Fe3+(Si2O7)O(OH)Orth.
9.BE.25SeidozeriteNa4MnZr2Ti(Si2O7)2O2F2Mon.
9.BE.25NabalamprophylliteNa3(Ba,Na)2Ti3(Si2O7)2O2(OH,F)2Mon. 2/m
9.BE.25GrenmariteNa4MnZr3(Si2O7)2O2F2Mon. 2/m : P2/b
9.BE.25SchülleriteBa2Na(Mn,Ca)(Fe3+,Mg,Fe2+)2Ti2(Si2O7)2(O,F)4Tric. 1 : P1
9.BE.25LileyiteBa2(Na,Fe,Ca)3MgTi2(Si2O7)2O2F2Mon. 2/m : B2/m
9.BE.27MurmaniteNa2Ti2(Si2O7)O2 · 2H2OTric.
9.BE.30EpistoliteNa2(Nb,Ti)2(Si2O7)O2 · nH2OTric.
9.BE.32LomonosoviteNa5Ti2(Si2O7)(PO4)O2Tric.
9.BE.35VuonnemiteNa11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH)Tric.
9.BE.37SoboleviteNa13Ca2Mn2Ti3(Si2O7)2(PO4)4O3F3Mon. m : Pb
9.BE.40InneliteNa2CaBa4Ti3(Si2O7)2(SO4)2O4Tric. 1 : P1
9.BE.40PhosphoinneliteNa3Ba4Ti3(Si2O7)2(PO4,SO4)2O2FTric.
9.BE.42YoshimuraiteBa2Mn2Ti(Si2O7)(PO4)O(OH)Tric. 1 : P1
9.BE.45QuadruphiteNa14Ca2Ti4(Si2O7)2(PO4)2O2FTric.
9.BE.47PolyphiteNa5(Na4Ca2)Ti2(Si2O7)(PO4)3O2F2Tric. 1 : P1
9.BE.50BornemaniteNa6BaTi2Nb(Si2O7)2(PO4)O2(OH)F Tric. 1 : P1
9.BE.50ShkatulkaliteNa5(Nb1−xTix)2(Ti1−yMn2+y)[Si2O7]2O2(OH)2·nH2O (x + y = 0.5; n ≤ 10)Mon.
9.BE.55BafertisiteBa2Fe2+4Ti2(Si2O7)2O2(OH)2F2Tric.
9.BE.55HejtmaniteBa2(Mn2+,Fe2+)4Ti2(Si2O7)2O2(OH)2F2Tric. 1
9.BE.55Bykovaite(Ba,Na,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(H2O,F,OH)2 · 3.5H2OMon. 2/m
9.BE.55Nechelyustovite(Ba,Sr,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(O,H2O,F)2 · 4.5H2OMon. 2/m : B2/m
9.BE.60Delindeite(Na,K)2(Ba,Ca)2(Ti,Fe,Al)3(Si2O7)2O2(OH)2 · 2H2OMon.
9.BE.65BusseniteNa2Ba2Fe2+Ti(Si2O7)(CO3)(OH)3FTric. 1 : P1
9.BE.67JinshajiangiteBaNaFe2+4Ti2(Si2O7)2O2(OH)2FMon. 2/m
9.BE.67PerraultiteBaNaMn2+4Ti2(Si2O7)2O2(OH)2FMon. 2/m : B2/m
9.BE.67SurkhobiteNaCaBa2Mn8Ti4(Si2O7)4O5F5
9.BE.70Karnasurtite-(Ce)(Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 · 3H2O
9.BE.70Perrierite-(Ce)Ce4MgFe3+2Ti2(Si2O7)2O8
9.BE.70Strontiochevkinite(Sr,La,Ce,Ca)4Fe2+(Ti,Zr)2Ti2(Si2O7)2O8Mon.
9.BE.70Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8Mon.
9.BE.70Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8Mon. 2/m : B2/m
9.BE.70RengeiteSr4ZrTi4(Si2O7)2O8Mon. 2/m : P21/b
9.BE.70MatsubaraiteSr4Ti5(Si2O7)2O8Mon. 2/m : P21/b
9.BE.70Dingdaohengite-(Ce)(Ce,La)4Fe2+(Ti,Fe2+,Mg,Fe2+)2Ti2(Si2O7)2O8Mon. 2/m : P21/b
9.BE.70Maoniupingite-(Ce)(Ce,Ca)4(Fe3+,Ti,Fe2+,◻)(Ti,Fe3+,Fe2+,Nb)4(Si2O7)2O8Mon. 2/m : B2/m
9.BE.70Perrierite-(La)(La,Ce,Ca)4(Fe,Mn2+,Mg)Fe3+2(Ti,Fe3+)2(Si2O7)2O8Mon. 2/m : P21/b
9.BE.70UKI-2008-(SiO:SrTiZr)Sr4ZrTi4(Si2O7)2O8Orth. mmm (2/m 2/m 2/m) : Pbca
9.BE.70Hezuolinite(Sr,REE)4Zr(Ti,Fe3+)4(Si2O7)2O8Mon. 2/m : B2/m
9.BE.72FersmaniteCa4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3Tric.
9.BE.75BelkoviteBa3(Nb,Ti)6(Si2O7)2O12Hex.
9.BE.77NasonitePb6Ca4(Si2O7)3Cl2Hex.
9.BE.80KentrolitePb2Mn3+2(Si2O7)O2Orth. mmm (2/m 2/m 2/m) : Pbcm
9.BE.80MelanotekitePb2Fe3+2(Si2O7)O2Orth.
9.BE.82TilleyiteCa5(Si2O7)(CO3)2Mon.
9.BE.85KillalaiteCa6.4(H0.6Si2O7)2(OH)2Mon.
9.BE.87Stavelotite-(La)(La,Nd,Ca)3Mn2+3Cu(Mn3+,Fe3+,Mn4+)26(Si2O7)6O30Trig. 3 : P31
9.BE.90Biraite-(Ce)Ce2Fe2+(Si2O7)(CO3)Mon. 2/m : P21/b
9.BE.92Cervandonite-(Ce)(Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH)Trig. 3m : R3m
9.BE.95BatisiviteBaV3+8Ti6(Si2O7)O22Tric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)Hide

56.2.5.1Mosandrite-(Ce)(Ca3REE)[(H2O)2Ca0.50.5]Ti(Si2O7)2(OH)2(H2O)2Mon. 2/m : P21/b
56.2.5.2Nacareniobsite-(Ce)NbNa3Ca3(Ce,REE )(Si2O7)2OF3Mon.
56.2.5.3FersmaniteCa4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3Tric.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.2.1TopazAl2(SiO4)(F,OH)2Orth. mmm (2/m 2/m 2/m)
17.2.2PolylithioniteKLi2Al(Si4O10)(F,OH)2Mon. 2/m : B2/b
17.2.3Leifite(Na,H2O)Na6[Be2Al2(Al,Si)Si15O39]F2Trig. 3m : P3m1
17.2.5Meliphanite(Ca,Na)2(Be,Al)[Si2O6(OH,F)]Tet. 4 : I4
17.2.6SarcoliteNa4Ca12Al8Si12O46(SiO4,PO4)(OH,H2O)4(CO3,Cl)Tet.
17.2.8Kuliokite-(Y)Y4Al(SiO4)2(OH)2F5
17.2.9Zinnwaldite
17.2.10MagbasiteKBaFe3+Mg7Si8O22(OH)2F6Orth. mmm (2/m 2/m 2/m) : Cmma

Other InformationHide

Notes:
Easily soluble in hot diluted hydrochloric acid
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 GötzeniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Sahama, T. G. & Hytönen, K. (1957) Götzenite and combeite, two new silicates from the Belgian Congo. Mineralogical Magazine 31: 503-510
Fleischer, M. (1958) New mineral names. American Mineralogist: 43: 790-798
International Mineralogical Association (1962) International Mineralogical Association: Commission on new minerals and mineral names. Mineralogical Magazine: 33: 260-263
Cannillo, E., Mazzi, F. & Rossi, G. (1972) Crystal structure of gotzenite. Soviet Physics - Crystallography: 16 (6): 1026-1030
Christiansen, C.C., Johnsen, O., Makovicky, E. (2003) Crystal chemistry of the rosenbuschite group. The Canadian Mineralogist: 41: 1203-1224.
Sokolova, E. (2006) From structure topology to chemical composition. I. Structural hierarchy and stereochemistry in titanium disilicate minerals. The Canadian Mineralogist: 44: 1273.
Sokolova, E. & Camara, 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 (in press)

Internet Links for GötzeniteHide

Localities for GötzeniteHide

ⓘ - 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.
Canada
 
  • Québec
    • Gaspésie-Îles-de-la-Madeleine
      • La Haute-Gaspésie RCM
Wallace et al. (1990) Canadian Mineralogist 28, 251; Wallace, G.M., Whalen, J.B. & Martin, R.F. (1990) Agpaitic and miaskitic nepheline syenites of the McGerrigle plutonic complex, Gaspé, Quebec. Canadian Mineralogist 28, 251-266.
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Horváth, L and Gault, R.A. (1990), The mineralogy of Mont Saint-Hilaire Quebec. Mineralogical Record: 21: 284-359.
Democratic Republic of the Congo
 
  • Nord-Kivu
Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139; USGS Open-File Report 02–156–A
    • Goma
Andersen, T., Elburg, M. A., & Erambert, M. (2014). Extreme peralkalinity in delhayelite-and andremeyerite-bearing nephelinite from Nyiragongo volcano, East African Rift. Lithos, 206, 164-178.
Sahama, T. G. & Hytönen, K. (1957) Götzenite and combeite, two new silicates from the Belgian Congo. Mineralogical Magazine 31: 503-510; NJMM (2000), 496; Mineralogical Magazine 1957 31 : 698-699.
Denmark
 
  • Greenland
    • Sermersooq
Christiansen, C.C. & Johnsen, O. (2003): Crystal chemistry of the Rosenbuschite group. Canadian Mineralogist. 41: 1203-1224
Christiansen, C. C., Gault, R. A., Grice, J. D., Johnsen, O. (2003): Kochite, a new member of the rosenbuschite group from the Werner Bjerge alkaline complex, East Greenland. European Journal of Mineralogy. 15, 551-554
Germany
 
  • Baden-Württemberg
Weisenberger, Tobias B. & Spürgin, Simon (2014) Hydrothermal phonolite alteration in the Kaiserstuhl Volcanic Complex, Germany. 31st Nordic Geological Meeting, Lund Sweden.
      • Bötzingen
Weisenberger, T.B., Spürgin, S., Lahaye, Y. (2014): Hydrothermal alteration and zeolitization oft he Fohberg phonolite, Kaiserstuhl Volcanic Complex, Germany, International Journal of Earth Sciences, Vol. 103 (8). 2273-2300
  • Rhineland-Palatinate
    • Ahrweiler
      • Hillesheim
Chukanov, N. V., Zubkova, N. V., Pekov, I. V., Belakovskiy, D. I., Schüller, W., Ternes, B., ... & Pushcharovsky, D. Y. (2013). Hillesheimite,(K, Ca,□) 2 (Mg, Fe, Ca,□) 2 [(Si, Al) 13O23 (OH) 6](OH)· 8H2O, a new phyllosilicate mineral of the Günterblassite group. Geology of Ore Deposits, 55(7), 549-557.
        • Walsdorf
Hohn, G., Leu, K. (2015): Mineralien vom Goßberg bei Walsdorf, Eifel.- Lapis, 40 (Nr. 11), S. 30-36 + 54.
      • Kruft
Blass, G., Götzenit als Neufund in einem sanidinitischen Auswürfling des Laacher-See-Vulkans, Mineralien-Welt 2/6, 76-78, 1991
    • Mayen-Koblenz
      • Mendig
        • Niedermendig
Blass, G., Götzenit als Neufund in einem sanidinitischen Auswürfling des Laacher-See-Vulkans, Mineralien-Welt 2/6, 76-78, 1991
Blass, G., Götzenit als Neufund in einem sanidinitischen Auswürfling des Laacher-See-Vulkans, Mineralien-Welt 2/6, 76-78, 1991
          • Wingertsberg
Blass, G., Götzenit als Neufund in einem sanidinitischen Auswürfling des Laacher-See-Vulkans, Mineralien-Welt 2/6, 76-78, 1991
    • Vulkaneifel
      • Daun
        • Oberstadtfeld
Rastsvetaeva, R.K., Aksenov, S.M., Chukanov, N.V., Lykova, I.S., Verin, I.A. (2014): Iron-rich schüllerite from Kahlenberg (Eifel, Germany): Crystal structure and relation to lamprophyllite-group minerals. Crystallography Reports, Vol. 59, pp. 867-873.
        • Schalkenmehren
[MinRec 32:499]
        • Üdersdorf
Hentschel, G., Die Minerale der Üdersdorfer Lava, Lapis, Weise Verlag, München, 11/1989
      • Gerolstein
        • Roth
Blaß, G. & Schüller, W. (2012): Der Rother Kopf in der Vulkaneifel. Lapis, 37 (3), 20-29.; Aksenov, S. M., Rastsvetaeva, R. K., & Chukanov, N. V. (2014). The crystal structure of emmerichite Ва 2Na 3Fe 3+ Ti 2 (Si 2O 7) 2O 2F 2, a new lamprophyllite-group mineral. Zeitschrift für Kristallographie–Crystalline Materials, 229(1), 1-7.
Italy
 
  • Latium
    • Rome Province
      • Alban Hills
        • Ariccia
in the collection of Christof Schäfer
  • Umbria
    • Terni Province
      • San Venanzo
Stoppa, F., Sharygin, V.V., and Cundari, A. (1997): Mineralogy and Petrology 61, 27-45.; F. Stoppa and Y. Liu, Eur. J. Mineral. , 1995, 7, pp. 391-402; Bellezza, M., Merlino, S. and Perchiazzi, N. (2004): Chemical and structural study of the Zr,Ti-disilicates in the venanzite from Pian di Celle, Umbria, Italy. Eur. J. Mineral. 16, 957-969.
Kenya
 
  • Homa Bay County
Berger, V.I., Singer, D.A., Orris, G.J. (2009) Carbonatites of the World, Explored Deposits of Nb and REE - Database and Grade and Tonnage Models. U.S. Geological Survey Open-File Report 2009-1139, 17 pages. USGS Open-File Report 02–156–A
Morocco
 
  • Béni Mellal-Khénifra Region
    • Khénifra Province
      • Tamazeght Mountain Range
KHADEM ALLAH, B., FONTAN, F., KADAR, M., MONCHOUX, P. & SØRENSEN, H. (1998): Reactions between agpaitic nepheline syenitic melts and sedimentary carbonate rocks, exemplified by the Tamazeght complex, Morocco. Geokhimiya 7, 643-655.
Namibia
 
  • Khomas Region
    • Windhoek District
      • Aris
KOLLER, F., ŠKODA, R., PALFI, A.G. & POPP, F. (2013) Phonolites of the Aris and Rehoboth areas, Central Namibia. Abstract, Mineralogical and Petrological Conference MinPet 2013, Bratislava. 40.
Norway
 
  • Vestfold
    • Larvik
      • Langesundsfjorden
        • Barkevik area
Eldjarn, K. (1983): Mineraler fra Syenitt-Pegmatitter i Langesundsfjordområdet. NAGS-nytt 10 (2): 4-41
Russia
 
  • Murmanskaya Oblast'
    • Khibiny Massif
      • Eveslogchorr Mt
Pavel M. Kartashov analytical data
PEKOV, I.V. & NIKOLAEV, A.P. (2013) Minerals of the pegmatites and hydrothermal assemblages of the Koashva deposit (Khibiny, Kola Peninsula, Russia). Mineralogical Almanac 189(2), 7-65.
www.koeln.netsurf.de/~w.steffens/lovo.htm
Tanzania
 
  • Arusha Region
Zaitsev, A. N., Marks, M. A. W., Wenzel, T., Spratt, J., Sharygin, V. V., Strekopytov, S., & Markl, G. (2012). Mineralogy, geochemistry and petrology of the phonolitic to nephelinitic Sadiman volcano, Crater Highlands, Tanzania. Lithos, 152, 66-83.
Ukraine
 
  • Donetsk (Donets'k) Oblast'
Kryvdik S. G. · Sharygin V. V. · Gatsenko V. O. · Lunev E. S. (2016) Foid minerals from malignites of the Pokrovo-Kireevo massif (Azov Sea region, Ukraine)
Mineral and/or Locality  
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