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Khristovite-(Ce)

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08267370014946325293287.jpg
Khristovite-(Ce), etc.

Rhodonite occurrence, Muzeinyi Valley, Inyl'chek Range, Issyk-Kul Region, Kyrgyzstan
01143170014946325368506.jpg
Khristovite-(Ce), etc.

Rhodonite occurrence, Muzeinyi Valley, Inyl'chek Range, Issyk-Kul Region, Kyrgyzstan
02216970014946325332402.jpg
Khristovite-(Ce)

Rhodonite occurrence, Muzeinyi Valley, Inyl'chek Range, Issyk-Kul Region, Kyrgyzstan
08267370014946325293287.jpg
Khristovite-(Ce), etc.

Rhodonite occurrence, Muzeinyi Valley, Inyl'chek Range, Issyk-Kul Region, Kyrgyzstan
01143170014946325368506.jpg
Khristovite-(Ce), etc.

Rhodonite occurrence, Muzeinyi Valley, Inyl'chek Range, Issyk-Kul Region, Kyrgyzstan
02216970014946325332402.jpg
Khristovite-(Ce)

Rhodonite occurrence, Muzeinyi Valley, Inyl'chek Range, Issyk-Kul Region, Kyrgyzstan
08267370014946325293287.jpg
Khristovite-(Ce), etc.

Rhodonite occurrence, Muzeinyi Valley, Inyl'chek Range, Issyk-Kul Region, Kyrgyzstan
01143170014946325368506.jpg
Khristovite-(Ce), etc.

Rhodonite occurrence, Muzeinyi Valley, Inyl'chek Range, Issyk-Kul Region, Kyrgyzstan
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About Khristovite-(Ce)Hide

Formula:
{CaCe}{MgAlMn2+}(Si2O7)(SiO4)F(OH)
In the type material, the F:O ratio on the O/F site is 63:37.
Colour:
Brown to dark brown.
Hardness:
5
Crystal System:
Monoclinic
Name:
Named in honor of Yevgeny Vladimirovich Khristov (Евгения Владимировича Христова) (1933-), a Russian geologist, and the author of many works on the tectonics of the Tien Shan.
Chemically related to dissakisite-(Ce), dollaseite-(Ce), manaevite-(Ce), gatelite-(Ce), and västmanlandite-(Ce).


Classification of Khristovite-(Ce)Hide

IMA status:
Approved
Approval year:
1991
Strunz 8th ed.:
8/C.23-85
Nickel-Strunz 10th (pending) ed.:
9.BG.05

9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination
Dana 8th ed.:
58.2.1a.9

58 : SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
2 : Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)

Physical Properties of Khristovite-(Ce)Hide

Colour:
Brown to dark brown.
Hardness:
5 on Mohs scale

Optical Data of Khristovite-(Ce)Hide

Type:
Biaxial (-)
RI values:
nα = 1.773 nβ = 1.790 nγ = 1.803
2V:
Measured: 83° , Calculated: 80°
Max Birefringence:
δ = 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r < v medium

Chemical Properties of Khristovite-(Ce)Hide

Formula:
{CaCe}{MgAlMn2+}(Si2O7)(SiO4)F(OH)

In the type material, the F:O ratio on the O/F site is 63:37.
IMA Formula:
CaCe(MgAlMn2+)[Si2O7][SiO4]F(OH)
Elements listed:
Al, Ca, Ce, F, H, Mg, Mn, O, Si - search for minerals with similar chemistry
Common Impurities:
Fe

Crystallography of Khristovite-(Ce)Hide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Cell Parameters:
a = 8.903(6) Å, b = 5.748(3) Å, c = 10.107(7) Å
β = 113.41(5)°
Ratio:
a:b:c = 1.549 : 1 : 1.758
Unit Cell V:
4776 ų
Z:
2

Type Occurrence of Khristovite-(Ce)Hide

Synonyms of Khristovite-(Ce)Hide

Other Language Names for Khristovite-(Ce)Hide

Relationship of Khristovite-(Ce) to other SpeciesHide

Member of:
Dollaseite Group > Epidote Supergroup
Other Members of this group:
Dollaseite-(Ce){CaCe}{MgAlMg}(Si2O7)(SiO4)F(OH)Mon. 2/m : P21/m
UM2006-15-SiO:AlFHMgMnREE{Mn2+Ce}{MgAlMn2+}(Si2O7)(SiO4)F(OH)

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Khristovite-(Ce) associated with RhodoniteCaMn3Mn[Si5O15]
1 photo of Khristovite-(Ce) associated with HejtmaniteBa2Mn2+4Ti2(Si2O7)2O2(OH)2F2
1 photo of Khristovite-(Ce) associated with QuartzSiO2

Related Minerals - Nickel-Strunz GroupingHide

9.BG.Shuiskite-(Cr)Ca2Cr3+Cr3+2[Si2O6OH][SiO4](OH)2OMon. 2/m : B2/m
9.BG.Alnaperbøeite-(Ce)Ca(Ce2.5Na0.5)(AlAl2Al)[Si2O7][SiO4]3O(OH)2Mon. 2/m : P21/m
9.BG.MagnesiovesuvianiteCa19MgAl4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9Tet. 4/m : P4/n
9.BG.AlumovesuvianiteCa19AlAl4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9Tet. 4/m : P4/n
9.BG.05bAllanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(La){CaLa}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(Y){CaY}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05aClinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bDissakisite-(Ce){CaCe}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Dollaseite-(Ce){CaCe}{MgAlMg}(Si2O7)(SiO4)F(OH)Mon. 2/m : P21/m
9.BG.05aEpidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05aHancockite{CaPb}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05aMukhinite{Ca2}{Al2V3+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05aPiemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Piemontite-(Sr){CaSr}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05bManganiandrosite-(La){Mn2+La}{Mn3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon.
9.BG.05Tawmawite{Ca2}{(Al,Fe3+,Cr)3}(Si2O7)(SiO4)O(OH)
9.BG.05Tweddillite{CaSr}{Mn3+AlMn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bFerriallanite-(Ce){CaCe}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Niigataite{CaSr}{Al3}(Si2O7)(SiO4)O(OH)Mon. 2/m
9.BG.05Manganiandrosite-(Ce){Mn2+Ce}{Mn3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Dissakisite-(La){CaLa}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Vanadoandrosite-(Ce){Mn2+Ce}{V3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05Uedaite-(Ce){Mn2+Ce}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05aEpidote-(Sr){CaSr}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(Nd){CaNd}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bFerriallanite-(La){CaLa}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.05bÅskagenite-(Nd){Mn2+Nd}{Al2Fe3+}(Si2O7)(SiO4)O2Mon. 2/m : P21/m
9.BG.9.BG.Ferriakasakaite-(La){CaLa}{Fe3+AlMn2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.9.BG.Ferriandrosite-(Ce){Mn2+Ce}{Fe3+AlMn2+}(SiO4)(Si2O7)O(OH)
9.BG.9.BGFerriperbøeite-(Ce)CaCe3(Fe3+Al2Fe2+)[Si2O7][SiO4]3O(OH)2Mon. 2/m : P21/m
9.BG.10ZoisiteCa2Al3[Si2O7][SiO4]O(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
9.BG.15MacfalliteCa2Mn3+3(SiO4)(Si2O7)(OH)3Mon.
9.BG.15SursassiteMn2+2Al3(SiO4)(Si2O7)(OH)3Mon. 2/m : P21/m
9.BG.20Julgoldite-(Fe2+)Ca2Fe2+Fe3+2[Si2O6OH][SiO4](OH)2(OH)Mon.
9.BG.20OkhotskiteCa2Mn2+Mn3+2[Si2O6OH][SiO4](OH)2(OH)Mon.
9.BG.20Pumpellyite-(Fe2+)Ca2Fe2+Al2[Si2O6OH][SiO4](OH)2(OH)Mon.
9.BG.20Pumpellyite-(Fe3+)Ca2Fe3+Al2[Si2O6OH][SiO4](OH)2OMon.
9.BG.20Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)Mon.
9.BG.20Pumpellyite-(Mn2+)Ca2Mn2+Al2[Si2O6OH][SiO4](OH)2(OH)Mon.
9.BG.20Shuiskite-(Mg)Ca2MgCr3+2[Si2O6OH][SiO4](OH)2(OH)Mon.
9.BG.20Julgoldite-(Fe3+)Ca2Fe3+Fe3+2[Si2O6OH][SiO4](OH)2OMon.
9.BG.20Pumpellyite-(Al)Ca2AlAl2[Si2O6OH][SiO4](OH)2OMon.
9.BG.20PoppiiteCa2V3+V3+2[Si2O6OH][SiO4](OH)2OMon. 2/m : B2/m
9.BG.20Julgoldite-(Mg)Ca2MgFe3+2[Si2O6OH][SiO4](OH)2(OH)Mon.
9.BG.25GanomalitePb9Ca5Mn(Si2O7)4(SiO4)OHex.
9.BG.30RustumiteCa10(Si2O7)2(SiO4)(OH)2Cl2Mon.
9.BG.35VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9Tet. 4/mmm (4/m 2/m 2/m) : P4/nnc
9.BG.35WiluiteCa19MgAl4(Al,Mg)8(B,◻)4◻[Si2O7]4[(SiO4)10]O(O,OH)9Tet. 4/mmm (4/m 2/m 2/m) : P4/nnc
9.BG.35ManganvesuvianiteCa19Mn3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9Tet. 4/m : P4/n
9.BG.35FluorvesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(F,OH)9Tet. 4/mmm (4/m 2/m 2/m)
9.BG.35CyprineCa19Cu2+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9Tet. 4/m : P4/n
9.BG.40Vyuntspakhkite-(Y)(Y,Yb)4Al2.5-1.5(Si,Al)1.5-2.5(SiO4)4O(OH)7Mon.
9.BG.45DellaiteCa6Si3O11(OH)2Tric.
9.BG.50Gatelite-(Ce)CaCe3(AlAl2Mg)[Si2O7][SiO4]3O(OH)2Mon. 2/m : P21/b
9.BG.55Västmanlandite-(Ce)CaCe3(MgAl2Mg)[Si2O7][SiO4]3F(OH)2Mon. 2/m : P21/m

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

58.2.1a.1Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
58.2.1a.2Allanite-(La){CaLa}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
58.2.1a.3Allanite-(Y){CaY}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon.
58.2.1a.4Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
58.2.1a.5Dissakisite-(Ce){CaCe}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
58.2.1a.6Dollaseite-(Ce){CaCe}{MgAlMg}(Si2O7)(SiO4)F(OH)Mon. 2/m : P21/m
58.2.1a.7Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
58.2.1a.8Hancockite{CaPb}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon.
58.2.1a.10Mukhinite{Ca2}{Al2V3+}(Si2O7)(SiO4)O(OH)Mon.
58.2.1a.11Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
58.2.1a.12Piemontite-(Sr){CaSr}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon.

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.

References for Khristovite-(Ce)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pautov, L.A., Khorov, P.V., Ignatenko, K.I., Sokolova, E.V., and Nadezhina, T.N. (1993) Khristovite-(Ce), (Ca,REE)REE(Mg,Fe)AlMnSi3O11(OH)(F,O), a new mineral of the epidote group. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 122(3): 103-111 (in Russian). [Abs. in American Mineralogist (1995): 80: 405.]
Sokolova, E.V., Nadezhina, T.N., and Pautov, L.A. (1991) Crystal structure of a new natural silicate of manganese from the epidote group. Soviet Physics – Crystallography: 36(2): 172-174.
New Minerals (1997), New Minerals 1990-1994.

Internet Links for Khristovite-(Ce)Hide

Localities for Khristovite-(Ce)Hide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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.
Kyrgyzstan (TL)
 
  • Issyk-Kul Region
    • Inyl'chek Range
      • Muzeinyi Valley
ZVMO,(1993) 122, n3, 103-111; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Namibia
 
  • Erongo Region
    • Arandis Constituency
 Irene M. Abraham (2009): Geology and spatial distribution of uranium mineralisation in the SK anomaly area, Rossing area, Namibia, Master thesis University of the Witwatersrand.
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