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Tsepinite-Ca

A valid IMA mineral species
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Named for its relationship to previously described tsepinite-Na and tsepinite-K, with Ca dominant over Na or K. The root name is after Anatoliy Ivanovich Tsepin (b. 1946), physicist of the Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences (IGEM), specialist in X-ray spectroscopy and the electron-microprobe analysis of minerals, who initiated in the 1970s an electron-microprobe investigation of Labuntsovite Group minerals.
Type Locality:
ⓘLovchorrite Mine, Hackman Valley, Yukspor Mt, Khibiny Massif, Murmansk Oblast, Russia
This page provides mineralogical data about Tsepinite-Ca.


Unique Identifiers
Approval year:
2002
First published:
2003
Type description reference:
Pekov, Igor V., Chukanov, Nikita V., Ferraris, Giovanni, Gula, Angela, Pushcharovsky, Dmitry Yu., Zadov, Aleksandr E. (2003) Tsepinite–Ca, (Ca,K,Na,□)2(Ti,Nb)2(Si4O12) (OH,O)2·4H2O, a new mineral of the labuntsovite group from the Khibiny alkaline massif, Kola Peninsula – Novel disordered sites in the vuoriyarvite-type structure.Neues Jahrbuch für Mineralogie - Monatshefte, 2003 (10) 461-480doi:10.1127/0028-3649/2003/2003-0461

Classification of Tsepinite-Ca

9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions

Mineral Symbols
Transparency:
Transparent
Colour:
White, colourless, pale brownish
Streak:
White
Hardness:
5 onMohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.73(1) g/cm3 (Measured)    2.72 g/cm3 (Calculated)

Optical Data of Tsepinite-Ca
Surface Relief:
Moderate
Dispersion:
very weak: r < n.
Pleochroism:
Non-pleochroic

Chemistry of Tsepinite-Ca
Common Impurities:
K,Na

Crystallography of Tsepinite-Ca
General Appearance of Type Material:
Coarse long-prismatic to needle-shaped crystals up to 0.2 x 0.6 x 5mm in size.
Place of Conservation of Type Material:
A. E. Fersman Mineralogical Museum, Moscow, Russia, 2877/1.
Geological Setting of Type Material:
In cavities of replaced rinkite.
Associated Minerals at Type Locality:
Ancylite-(Ce)Natrolite
Reference:
Pekov, Igor V., Chukanov, Nikita V., Ferraris, Giovanni, Gula, Angela, Pushcharovsky, Dmitry Yu., Zadov, Aleksandr E. (2003) Tsepinite–Ca, (Ca,K,Na,□)2(Ti,Nb)2(Si4O12) (OH,O)2·4H2O, a new mineral of the labuntsovite group from the Khibiny alkaline massif, Kola Peninsula – Novel disordered sites in the vuoriyarvite-type structure.Neues Jahrbuch für Mineralogie - Monatshefte, 2003 (10) 461-480doi:10.1127/0028-3649/2003/2003-0461

Synonyms of Tsepinite-Ca

Other Language Names for Tsepinite-Ca

Relationship of Tsepinite-Ca to other Species
Other Members of Vuoriyarvite Group:
Tsepinite-KK2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon.m :Bm
Tsepinite-NaNa2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon.m :Bm
Tsepinite-SrSr(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon.m :Bm
Vuoriyarvite-KK2(Nb,Ti)2(Si4O12)(O,OH)2 · 4H2OMon.m :Bm

Common AssociatesOrth.mm2 :Ama29.CE.KataniteBa3NbFe3Si2O14Trig. 32 :P3219.CE.NiobobaotiteBa4(Ti2.5Fe2+1.5)Nb4Si4O28ClTet. 4/m :I41/a9.CE.AmaterasuiteSr4Ti6Si4O23(OH)ClOrth.mmm(2/m2/m2/m) :Fddd9.CE.SteiningeriteBa2Zr2(Si4O12)O2Tet. 4/mmm(4/m2/m2/m) :P4/mbm9.CE.05PapagoiteCaCu[H3AlSi2O9]Mon. 2/m :B2/m9.CE.10VerplanckiteBa4Mn2+2Si4O12(OH,H2O)3Cl3Hex. 6/mmm(6/m2/m2/m) :P6/mmm9.CE.15BaotiteBa4(Ti,Nb,W)8O16(SiO3)4ClTet. 4/m :I41/a9.CE.20NagashimaliteBa4(V,Ti)4B2Si8O27(O,OH)2ClOrth.mmm(2/m2/m2/m) :Pmmn9.CE.20TaramelliteBa4(Fe3+,Ti,Fe2+,Mg)4(B2Si8O27)O2ClxOrth.mmm(2/m2/m2/m) :Pmmn9.CE.20TitantaramelliteBa4(Ti,Fe3+,Fe2+,Mg)4(B2Si8O27)O2ClxOrth.mmm(2/m2/m2/m)9.CE.25Bario-orthojoaquinite(Ba,Sr)4Fe2Ti2[Si4O12]2O2 · H2OOrth.9.CE.25Byelorussite-(Ce)NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2OOrth.mm2 :Ama29.CE.25Joaquinite-(Ce)NaBa2Ce2FeTi2[Si4O12]2O2(OH,F) · H2OMon. 2 :B29.CE.25Orthojoaquinite-(La)NaBa2La2Fe2+Ti2[Si4O12]2O2(O,OH) · H2OOrth.mmm(2/m2/m2/m)9.CE.25StrontiojoaquiniteSr2Ba2(Na,Fe)2Ti2[Si4O12]2O2(O,OH)2 · H2OMon.9.CE.25Orthojoaquinite-(Ce)NaBa2Ce2FeTi2[Si4O12]2O2(O,OH) · H2OOrth.9.CE.25Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2OOrth.9.CE.30eLabuntsovite-MnNa4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10-12H2OMon. 2/m :B2/m9.CE.30bTsepinite-NaNa2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon.m :Bm9.CE.30cGjerdingenite-NaK2Na(Nb,Ti)4(Si4O12)2(OH,O)4 · 5H2OMon. 2/m :B2/m9.CE.30hAlsakharovite-ZnNaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2OMon.m :Bm9.CE.30cBurovaite-Ca(Na,K)4Ca2(Ti,Nb)8(Si4O12)4(OH,O)8 · 12H2OMon. 2/m :B2/m9.CE.30aNenadkevichite(Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2OOrth.mmm(2/m2/m2/m) :Pbam9.CE.30bTsepinite-SrSr(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon.m :Bm9.CE.30cGjerdingenite-MnK2Mn2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2OMon. 2/m :B2/m9.CE.30bParatsepinite-Na(Na,Sr,K,Ca)7(Ti,Nb)8(Si4O12)4(O,OH)8 · nH2O n ~ 8Mon. 2/m :B2/m9.CE.30dLemmleinite-KK2(Ti,Nb)2(Si4O12)(OH,O)2 · 4H2OOrth.9.CE.30cKarupmøllerite-Ca(Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 7H2OMon. 2/m :B2/m9.CE.30cLepkhenelmite-Zn(Ba,K)2Zn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2OMon.m :Bm9.CE.30hGutkovaite-MnK2CaMn(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2OMon.m :Bm9.CE.30eLabuntsovite-MgNa4K4(Ba,K)2Mg(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2OMon. 2/m :B2/m9.CE.30eLabuntsovite-FeNa4K4(Ba,K)2Fe2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2OMon. 2/m :B2/m9.CE.30cKuzmenkoite-ZnK2Zn(Ti,Nb)4(Si4O12)2(OH,O)4 · 6-8H2OMon.m :Bm9.CE.30fParalabuntsovite-MgNa8K8Mg4Ti16(Si4O12)8(OH,O)16 · 20-24H2OMon. 2/m :B2/m9.CE.30dLemmleinite-BaNa2K2Ba(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2OMon. 2/m :B2/m9.CE.30gOrganovaite-MnK2Mn(Nb,Ti)4(Si4O12)2(O,OH)4 · 5-7H2OMon. 2/m :B2/m9.CE.30gOrganovaite-ZnK2Zn(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2OMon. 2/m :B2/m9.CE.30bVuoriyarvite-KK2(Nb,Ti)2(Si4O12)(O,OH)2 · 4H2OMon.m :Bm9.CE.30cGjerdingenite-FeK2Fe2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2OMon. 2/m :B2/m9.CE.30aUnnamed (Ca-Na-ordered analogue of Korobitsynite)(Ca,Na)2(Ti,Nb)2(Si4O12)(OH,O)2 · 3-4H2OOrth. 222 :P212129.CE.30gParakuzmenkoite-Fe(K,Ba)4Fe(Ti,Nb)8(Si4O12)4(O,OH)8 · 14H2OMon. 2/m :B2/m9.CE.30aKorobitsynite(Na,◻)4Ti2(Si4O12)(O,OH)2 · 4H2OOrth.mmm(2/m2/m2/m) :Pbam9.CE.30cKuzmenkoite-MnK2Mn2+(Ti,Nb)4(Si4O12)2(OH,O)4 · 5-6H2OMon. 2/m :B2/m9.CE.30bTsepinite-KK2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon.m :Bm9.CE.30bParatsepinite-BaBa4(Ti,Nb)8(Si4O12)4(OH,O)8 · 8H2OMon. 2/m :B2/m9.CE.30hNeskevaaraite-FeK3Na2Fe2+(Ti,Nb)4(Si4O12)2(O,OH)4 · 5-6 H2OMon.m :Bm9.CE.30cGjerdingenite-CaK2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2OMon. 2/m :B2/m9.CE.45Natrokomarovite(Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2OOrth.9.CE.45Komarovite(Ca,Mn)(Nb,Ti)2[Si2O7](O,F)3 · 3.5H2OOrth.mmm(2/m2/m2/m) :Cmmm

Fluorescence of Tsepinite-Ca

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    • References for Tsepinite-CaⓘAris Quarriesanalysis by Pietro Vignola (CNR Milano)
    Russia
     
    Lykova et al. (2016)Pekov et al. (2005)Pekov et al. (2003)
    Spain
     
    Dill et al. (2023)Dill et al. (2023)Dill et al. (2023)
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