Christofschäferite-(Ce)
A valid IMA mineral species
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About Christofschäferite-(Ce)
Formula:
Ce3CaMnTiFe(3+)Ti2(Si2O7)2O8
Colour:
Black
Lustre:
Resinous
Hardness:
6
Specific Gravity:
4.8
Crystal System:
Monoclinic
Member of:
Name:
Named after Christof Schäfer (b. 1961), amateur mineralogist of Mayen-Kürrenberg, specialist in the minerals of the Eifel volcanic area, who discovered the mineral.
Mn2+-dominant member of the chevkinite group.
Unique Identifiers
Mindat ID:
42733
Long-form identifier:
mindat:1:1:42733:7
GUID
(UUID V4):
(UUID V4):
d6cc4f10-51e0-4677-b019-1af1e2af99de
IMA Classification of Christofschäferite-(Ce)
Approved
IMA Formula:
(Ce,La,Ca)4Mn(Ti,Fe)3(Fe,Ti)(Si2O7)2O8
Approval year:
2012
First published:
2012
Type description reference:
Chukanov, N.V., Aksenov, S.M., Rastsvetaeva, R.K., Belakovskiy, D.I., Göttlicher, J., Britvin, S.N., Möckel, S. (2012) Christofschäferite (Ce), (Ce,La,Ca)4Mn2+(Ti,Fe3+)3(Fe3+,Fe2+,Ti)(Si2O7)2O8, a new chevkinite group mineral from the Eifel area, Germany. Новые данные о минералах [New Data on Minerals], 47. 33-42
Classification of Christofschäferite-(Ce)
9.BE.
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 IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Csf-Ce | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Christofschäferite-(Ce)
Resinous
Transparency:
Translucent
Colour:
Black
Streak:
Brown
Hardness:
6 on Mohs scale
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
4.8(1) g/cm3 (Measured) 4.85 g/cm3 (Calculated)
Optical Data of Christofschäferite-(Ce)
Type:
Biaxial (-)
RI values:
nα = 1.945 nβ = 2.015 nγ = 2.050
2V:
Measured: 70° , Calculated: 68°
Max Birefringence:
δ = 0.105
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
none observed
Pleochroism:
Strong
Comments:
Light brown to very dark brown, Z > Y > X
Chemistry of Christofschäferite-(Ce)
Mindat Formula:
Ce3CaMnTiFe(3+)Ti2(Si2O7)2O8
Common Impurities:
Al,Mg,Ca,Nb
Crystallography of Christofschäferite-(Ce)
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Setting:
P21/m
Cell Parameters:
a = 13.3722(4) Å, b = 5.7434(1) Å, c = 11.0862(2) Å
β = 100.580(2)°
β = 100.580(2)°
Ratio:
a:b:c = 2.328 : 1 : 1.93
Unit Cell V:
836.97 ų (Calculated from Unit Cell)
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.90 Å | (39) |
4.64 Å | (65) |
3.480 Å | (78) |
3.169 Å | (81) |
3.095 Å | (43) |
2.730 Å | (100) |
2.169 Å | (46) |
1.737 Å | (46) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4b: Highly evolved igneous rocks | >3.0 |
34 : Complex granite pegmatites | |
35 : Ultra-alkali and agpaitic igneous rocks | |
Stage 7: Great Oxidation Event | <2.4 |
47e : [Vanadates, chromates, manganates] | |
47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Christofschäferite-(Ce)
General Appearance of Type Material:
Coarse crystals and isolated anhedral grains.
Place of Conservation of Type Material:
Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4227/1.
Geological Setting of Type Material:
Metasomatite, that formed at the contact of an alkali-rich magma and a Mn-rich rock.
Associated Minerals at Type Locality:
Reference:
Chukanov, N.V., Aksenov, S.M., Rastsvetaeva, R.K., Belakovskiy, D.I., Göttlicher, J., Britvin, S.N., Möckel, S. (2012) Christofschäferite (Ce), (Ce,La,Ca)4Mn2+(Ti,Fe3+)3(Fe3+,Fe2+,Ti)(Si2O7)2O8, a new chevkinite group mineral from the Eifel area, Germany. [Novye dannye o mineralakh] New Data on Minerals, 47, 33-42.
Synonyms of Christofschäferite-(Ce)
Relationship of Christofschäferite-(Ce) to other Species
Member of:
Other Members of this group:
Chevkinite-(Ce) | Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2 | Mon. 2/m : P21/b |
Chevkinite-(Nd) | (Nd,REE)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8 ? | |
Delhuyarite-(Ce) | Ce4Mg(Fe3+,W)3◻(Si2O7)2O6(OH)2 | Mon. 2/m : B2/m |
Dingdaohengite-(Ce) | (Ce,La)4Fe2+(Ti,Fe2+,Mg,Fe2+)2Ti2(Si2O7)2O8 | Mon. 2/m : P21/b |
Maoniupingite-(Ce) | (Ce,Ca)4(Fe3+,Ti,Fe2+,◻)(Ti,Fe3+,Fe2+,Nb)4(Si2O7)2O8 | Mon. 2/m : B2/m |
Polyakovite-(Ce) | (Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8 | Mon. 2/m : B2/m |
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
9.BE. | Paralomonosovite | Na6◻4Ti4(Si2O7)2[PO3OH][PO2(OH)2]O2(OF) |
9.BE. | Cámaraite | Ba3Na(Fe2+,Mn)8Ti4(Si2O7)4O4(OH,F)7 |
9.BE. | Bobshannonite | Na2KBa(Mn,Na)8(Nb,Ti)4(Si2O7)4O4(OH)4(O,F)2 |
9.BE. | Calciomurmanite | (Na,◻)2Ca(Ti,Mg,Nb)4[Si2O7]2O2(OH,O)2(H2O)4 |
9.BE. | Batievaite-(Y) | Y2Ca2Ti(Si2O7)2(OH)2(H2O)4 |
9.BE. | Delhuyarite-(Ce) | Ce4Mg(Fe3+,W)3◻(Si2O7)2O6(OH)2 |
9.BE.X | Asimowite | Fe2+4O(Si2O7) |
9.BE. | Moxuanxueite | NaCa6Zr(Si2O7)2OF3 |
9.BE. | Alexkuznetsovite-(Ce) | Ce2Mn(CO3)(Si2O7) |
9.BE. | Biraite-(La) | La2Fe2+(CO3)(Si2O7) |
9.BE. | Zinkgruvanite | Ba4Mn2+4Fe3+2(Si2O7)2(SO4)2O2(OH)2 |
9.BE. | Madeiraite | Na2Ca2Fe2Zr2(Si2O7)2O2F2 |
9.BE. | Bortolanite | Ca2(Ca1.5Zr0.5)Na(NaCa)Ti(Si2O7)2(OF)F2 |
9.BE. | Nacareniobsite-(Y) | Na3Ca3YNb(Si2O7)2OF3 |
9.BE. | Pilanesbergite | Na2Ca2Fe2Ti2(Si2O7)2O2F2 |
9.BE. | Alfredcasparite | Sr2TiO(Si2O7) |
9.BE.02 | Wadsleyite | Mg4O(Si2O7) |
9.BE.05 | Hennomartinite | SrMn3+2(Si2O7)(OH)2 · H2O |
9.BE.05 | Lawsonite | CaAl2(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.05 | Cortesognoite | CaV2(Si2O7)(OH)2 · H2O |
9.BE.07 | Ilvaite | CaFe3+Fe2+2(Si2O7)O(OH) |
9.BE.07 | Manganilvaite | CaFe2+Fe3+Mn2+(Si2O7)O(OH) |
9.BE.07 | Amamoorite | CaMn2+2Mn3+(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 | Baghdadite | Ca6Zr2(Si2O7)2O4 |
9.BE.17 | Burpalite | Na2CaZr(Si2O7)F2 |
9.BE.17 | Cuspidine | Ca8(Si2O7)2F4 |
9.BE.17 | Hiortdahlite | Na2Ca4(Ca0.5Zr0.5)Zr(Si2O7)2OF3 |
9.BE.17 | Janhaugite | (Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2 |
9.BE.17 | Låvenite | Na2Ca2Mn2Zr2(Si2O7)2O2F2 |
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 | Wöhlerite | Na2Ca4ZrNb(Si2O7)2O3F |
9.BE.20 | Mosandrite-(Ce) | (Ca3REE)[(H2O)2Ca0.5◻0.5]Ti(Si2O7)2(OH)2(H2O)2 |
9.BE.20 | Nacareniobsite-(Ce) | Na3Ca3(Ce,REE)Nb(Si2O7)2OF3 |
9.BE.20 | Roumaite | (Ca,Na,REE,◻)7(Nb,Ti)[Si2O7]2OF3 |
9.BE.20 | Rinkite-(Y) | Na2Ca4YTi(Si2O7)2OF3 |
9.BE.22 | Götzenite | NaCa6Ti(Si2O7)2OF3 |
9.BE.22 | Hainite-(Y) | Na2Ca4(Y,REE)Ti(Si2O7)2OF3 |
9.BE.22 | Rosenbuschite | Na6Ca6Zr3Ti(Si2O7)4O2F6 |
9.BE.22 | Kochite | Na3Ca2MnZrTi(Si2O7)2OF3 |
9.BE.22 | Fogoite-(Y) | Na3Ca2Y2Ti(Si2O7)2OF3 |
9.BE.23 | Dovyrenite | Ca6Zr(Si2O7)2(OH)4 |
9.BE.25 | Barytolamprophyllite | (Ba,Na)2(Na,Ti,Fe3+)4Ti2(Si2O7)2O(OH,F) |
9.BE.25 | Ericssonite | BaMn2+2Fe3+(Si2O7)O(OH) |
9.BE.25 | Lamprophyllite | (Na,Mn2+)3(Sr,Na)2(Ti,Fe3+)3(Si2O7)2O2(OH,O,F)2 |
9.BE.25 | Ericssonite-2O | BaMn2+2Fe3+(Si2O7)O(OH) |
9.BE.25 | Seidozerite | Na4MnZr2Ti(Si2O7)2O2F2 |
9.BE.25 | Nabalamprophyllite | (BaNa)Ti2Na3Ti(Si2O7)2O2(OH)2 |
9.BE.25 | Grenmarite | Na4MnZr3(Si2O7)2O2F2 |
9.BE.25 | Schüllerite | Ba2Na(Mn,Ca)(Fe3+,Mg,Fe2+)2Ti2(Si2O7)2(O,F)4 |
9.BE.25 | Kazanskyite | BaNa3Ti2Nb(Si2O7)2O2(OH)2(H2O)4 |
9.BE.25 | Lileyite | Ba2(Na,Fe,Ca)3MgTi2(Si2O7)2O2F2 |
9.BE.25 | Emmerichite | Ba2Na(Na,Fe2+)2(Fe3+,Mg)Ti2(Si2O7)2O2F2 |
9.BE.25 | Saamite | Ba◻Na3Ti2Nb(Si2O7)2O2(OH)F(H2O)2 |
9.BE.25 | Fluorlamprophyllite | Na3(SrNa)Ti3(Si2O7)2O2F2 |
9.BE.25 | Fluorbarytolamprophyllite | (Ba,Sr)2[(Na,Fe2+)3(Ti,Mg)F2][Ti2(Si2O7)2O2] |
9.BE.27 | Murmanite | Na2Ti2(Si2O7)O2 · 2H2O |
9.BE.27 | Vigrishinite | NaZnTi4(Si2O7)2O3(OH)(H2O)4 |
9.BE.27 | Kolskyite | CaNa2Ti4(Si2O7)2O4(H2O)7 |
9.BE.27 | Selivanovaite | NaFe3+Ti4(Si2O7)2O4(H2O)4 |
9.BE.30 | Epistolite | (Na◻)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 | Innelite | Ba4Ti2Na(NaMn2+)Ti(Si2O7)2[(SO4)(PO4)]O2[O(OH)] |
9.BE.40 | Phosphoinnelite | Na3Ba4Ti3(Si2O7)2(PO4,SO4)2O2F |
9.BE.42 | Yoshimuraite | Ba2Mn2Ti(Si2O7)(PO4)O(OH) |
9.BE.45 | Quadruphite | Na6Na2(CaNa)2Na2Ti2Na2Ti2(Si2O7)2(PO4)4O4F2 |
9.BE.47 | Polyphite | Na5(Na4Ca2)Ti2(Si2O7)(PO4)3O2F2 |
9.BE.50 | Bornemanite | Na6BaTi2Nb(Si2O7)2(PO4)O2(OH)F |
9.BE.50 | Shkatulkalite | Na2Nb2Na3Ti(Si2O7)2O2(FO)(H2O)4(H2O)3 |
9.BE.55 | Bafertisite | Ba2Fe2+4Ti2(Si2O7)2O2(OH)2F2 |
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.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 | Karnasurtite-(Ce) | (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 · 3H2O |
9.BE.70 | Perrierite-(Ce) | Ce4MgFe3+2Ti2(Si2O7)2O8 |
9.BE.70 | Strontiochevkinite | (Sr,La,Ce,Ca)4Fe2+(Ti,Zr)2Ti2(Si2O7)2O8 |
9.BE.70 | Chevkinite-(Ce) | Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2 |
9.BE.70 | Polyakovite-(Ce) | (Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8 |
9.BE.70 | Rengeite | Sr4ZrTi4(Si2O7)2O8 |
9.BE.70 | Matsubaraite | Sr4Ti5(Si2O7)2O8 |
9.BE.70 | Dingdaohengite-(Ce) | (Ce,La)4Fe2+(Ti,Fe2+,Mg,Fe2+)2Ti2(Si2O7)2O8 |
9.BE.70 | Maoniupingite-(Ce) | (Ce,Ca)4(Fe3+,Ti,Fe2+,◻)(Ti,Fe3+,Fe2+,Nb)4(Si2O7)2O8 |
9.BE.70 | Perrierite-(La) | (La,Ce,Ca)4(Fe2+,Mn)(Ti,Fe3+,Al)4[(Si2O7)O4]2 |
9.BE.70 | UM2008-53-SiO:SrTiZr | Sr4ZrTi4(Si2O7)2O8 |
9.BE.70 | Hezuolinite | (Sr,REE)4Zr(Ti,Fe3+)4(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 | Kentrolite | Pb2Mn3+2(Si2O7)O2 |
9.BE.80 | Melanotekite | Pb2Fe3+2(Si2O7)O2 |
9.BE.82 | Tilleyite | Ca5(Si2O7)(CO3)2 |
9.BE.82 | Alexkuznetsovite-(La) | La2Mn(CO3)(Si2O7) |
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 | Biraite-(Ce) | Ce2Fe2+(Si2O7)(CO3) |
9.BE.90 | Magnesiorowlandite-(Y) | Y4(Mg,Fe)(Si2O7)2F2 |
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,◻)2(Ti,Zr)5(Si2O7)4(OH,O)12 · 2H2O |
9.BE.95 | Batisivite | BaV3+8Ti6(Si2O7)O22 |
9.BE.95 | Rusinovite | Ca10(Si2O7)3Cl2 |
9.BE.97 | Schlüterite-(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 Christofschäferite-(Ce)
mindat.org URL:
https://www.mindat.org/min-42733.html
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References for Christofschäferite-(Ce)
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2012) New minerals and nomenclature modifications approved in 2012. CNMNC Newsletter No 13. Mineralogical Magazine, 76 (3) 807-817 doi:10.1180/minmag.2012.076.3.26
Aksenov, S. M., Rastsvetaeva, R. K., Chukanov, N. V. (2012) Crystal structure features of christofschäferite-(Ce), a new mineral of chevkinite group. Acta Crystallographica Section A Foundations of Crystallography, 68. doi:10.1107/s0108767312096419
Chukanov, N.V., Aksenov, S.M., Rastsvetaeva, R.K., Belakovskiy, D.I., Göttlicher, J., Britvin, S.N., Möckel, S. (2012) Christofschäferite (Ce), (Ce,La,Ca)4Mn2+(Ti,Fe3+)3(Fe3+,Fe2+,Ti)(Si2O7)2O8, a new chevkinite group mineral from the Eifel area, Germany. Новые данные о минералах [New Data on Minerals], 47. 33-42
Localities for Christofschäferite-(Ce)
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
Germany (TL) | |
| Williams et al. (2012) +2 other references |
Russia | |
| Kasatkin et al. (2020) |
Quick NavTopAbout Christofschäferite-(Ce)Unique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Pumice quarries, Wingertsberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany