Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Komarovite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
(Ca,Mn)Nb2[O3|Si2O7] · 3.5H2O
Colour:
pale rose, white
Lustre:
Dull
Hardness:
1 - 2
Specific Gravity:
3
Crystal System:
Orthorhombic
Name:
Named in 1971 by A. M. Portnov, G. K. Krivokoneva, and T. I. Stolyarova in honor of Russian cosmonaut Vladimir Mikhaylovich Komarov [March 16, 1927 Moscow, Russia - April 24, 1967 (died while orbiting the Earth)].
See also natrokomarovite.


Hide all sections | Show all sections

Classification of KomaroviteHide

Approved
Approval Year:
1971
9.CE.45

9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions
56.2.4.12

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
17.8.15

17 : Silicates Containing other Anions
8 : Silicates with niobate or tantalate

Physical Properties of KomaroviteHide

Transparency:
Transparent, Translucent
Colour:
pale rose, white
Streak:
white
Hardness:
1 - 2 on Mohs scale
Fracture:
None observed
Density:
3 g/cm3 (Measured)    2.96 g/cm3 (Calculated)

Optical Data of KomaroviteHide

Type:
Biaxial (+)
RI values:
nα = 1.750 nβ = 1.766 nγ = 1.850
2V:
Measured: 48°
Max Birefringence:
δ = 0.100
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r < v marked

Chemical Properties of KomaroviteHide

Formula:
(Ca,Mn)Nb2[O3|Si2O7] · 3.5H2O
IMA Formula:
(Ca,Sr,Na)6-x(Nb,Ti)6(Si4O12)(O,OH,F)16 · nH2O
Common Impurities:
Ti,Al,Fe,Mn,Na,K

Crystallography of KomaroviteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 21.3 Å, b = 14 Å, c = 17.19 Å
Ratio:
a:b:c = 1.521 : 1 : 1.228
Unit Cell V:
5,126.06 ų (Calculated from Unit Cell)
Z:
18
Morphology:
Platy, foliated, massive.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
12.2 (70)
6.35 (30)
5.44 (30)
3.16 (100)
3.118 (40)
2.740 (40)
2.715 (30)
1.783 (50)

Type Occurrence of KomaroviteHide

Synonyms of KomaroviteHide

Other Language Names for KomaroviteHide

Simplified Chinese:硅铌钙石
Spanish:Komarovita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Rhabdophane-(Ce)2 photos of Komarovite associated with Rhabdophane-(Ce) on mindat.org.
Natrolite2 photos of Komarovite associated with Natrolite on mindat.org.
Microcline2 photos of Komarovite associated with Microcline on mindat.org.
Albite1 photo of Komarovite associated with Albite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.CE.05PapagoiteCaCu[H3AlSi2O9]Mon.
9.CE.10VerplanckiteBa2(Mn,Fe,Ti)Si2O6(O,OH,Cl,F)2 · 3H2O or nearHex.
9.CE.15BaotiteBa4(Ti,Nb)8Si4O28ClTet. 4/m : I41/a
9.CE.20NagashimaliteBa4(V,Ti)4B2Si8O27(O,OH)2ClOrth. mmm (2/m 2/m 2/m) : Pmmn
9.CE.20TaramelliteBa4(Fe3+,Ti,Fe2+,Mg)4(B2Si8O27)O2ClxOrth. mmm (2/m 2/m 2/m) : Pmmn
9.CE.20TitantaramelliteBa4(Ti,Fe3+,Fe2+,Mg)4(B2Si8O27)O2ClxOrth.
9.CE.25Bario-orthojoaquinite(Ba,Sr)4Fe2Ti2[Si4O12]2O2 · H2OOrth.
9.CE.25Byelorussite-(Ce)NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2O
9.CE.25Joaquinite-(Ce)NaBa2Ce2FeTi2[Si4O12]2O2(OH,F) · H2OMon. 2 : B2
9.CE.25Orthojoaquinite-(Ce)NaBa2Ce2FeTi2[Si4O12]2O2(O,OH) · H2O
9.CE.25StrontiojoaquiniteSr2Ba2(Na,Fe)2Ti2[Si4O12]2O2(O,OH)2 · H2OMon.
9.CE.25Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2OOrth.
9.CE.25Orthojoaquinite-(La)NaBa2La2Fe2+Ti2[Si4O12]2O2(O,OH) · H2OOrth.
9.CE.30eLabuntsovite-MnNa4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10-12H2OMon.
9.CE.30aNenadkevichite(Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2OOrth. mmm (2/m 2/m 2/m) : Pbam
9.CE.30dLemmleinite-KK2(Ti,Nb)2(Si4O12)(OH,O)2 · 4H2OOrth.
9.CE.30aKorobitsyniteNa2(Ti,Nb)2(Si4O12)(OH,O)2 · 3-4H2OOrth. mmm (2/m 2/m 2/m) : Pbam
9.CE.30cKuzmenkoite-MnK2Mn2+(Ti,Nb)4(Si4O12)2(OH,O)4 · 5-6H2OMon.
9.CE.30bVuoriyarvite-KK2(Nb,Ti)2(Si4O12)(O,OH)2 · 4H2OMon.
9.CE.30bTsepinite-NaNa2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon.
9.CE.30cKarupmøllerite-Ca(Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 7H2O
9.CE.30eLabuntsovite-MgNa4K4(Ba,K)2Mg(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2OMon.
9.CE.30eLabuntsovite-FeNa4K4(Ba,K)2Fe2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2OMon.
9.CE.30dLemmleinite-BaNa2K2Ba(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2OMon. 2/m : B2/m
9.CE.30cGjerdingenite-FeK2Fe2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2OMon. 2/m : B2/m
9.CE.30hNeskevaaraite-FeK3Na2Fe2+(Ti,Nb)4(Si4O12)2(O,OH)4 · 5-6 H2OMon. m : Bm
9.CE.30bTsepinite-KK2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon. 2/m : B2/m
9.CE.30bParatsepinite-BaBa4(Ti,Nb)8(Si4O12)4(OH,O)8 · 8H2O
9.CE.30bTsepinite-CaCa(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon. 2/m : B2/m
9.CE.30hAlsakharovite-ZnNaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2OMon. m : Bm
9.CE.30cGjerdingenite-MnK2Mn2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2OMon. 2/m : B2/m
9.CE.30cLepkhenelmite-Zn(Ba,K)2Zn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2OMon. m : Bm
9.CE.30bTsepinite-SrSr(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon. m : Bm
9.CE.30bParatsepinite-Na(Na,Sr,K,Ca)7(Ti,Nb)8(Si4O12)4(O,OH)8·nH2O n ~ 8Mon. 2/m : B2/m
9.CE.30fParalabuntsovite-MgNa8K8Mg4Ti16(Si4O12)8(OH,O)16 · 20-24H2OMon. 2/m
9.CE.30cGjerdingenite-CaK2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2OMon. 2/m : B2/m
9.CE.30cGjerdingenite-NaK2Na(Nb,Ti)4(Si4O12)2(OH,O)4 · 5H2OMon. 2/m : B2/m
9.CE.30hGutkovaite-MnK2CaMn(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2OMon.
9.CE.30cKuzmenkoite-ZnK2Zn(Ti,Nb)4(Si4O12)2(OH,O)4·6-8H2OMon. m : Bm
9.CE.30gOrganovaite-MnK2Mn(Nb,Ti)4(Si4O12)2(O,OH)4 · 5-7H2OMon. 2/m : B2/m
9.CE.30gOrganovaite-ZnK2Zn(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O
9.CE.30gParakuzmenkoite-Fe(K,Ba)4Fe(Ti,Nb)8(Si4O12)4(O,OH)8 · 14H2OMon. 2/m : B2/m
9.CE.30cBurovaite-Ca(Na,K)4Ca2(Ti,Nb)8(Si4O12)4(OH,O)8 · 12H2OMon. 2/m : B2/m
9.CE.45Natrokomarovite(Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2OOrth.

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

56.2.4.1BaghdaditeCa3(Zr,Ti)(Si2O7)O2Mon.
56.2.4.2BurpaliteNa2CaZr(Si2O7)F2Mon.
56.2.4.3CuspidineCa4(Si2O7)(F,OH)2Mon. 2/m : P21/b
56.2.4.4Låvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2Mon. 2/m : P21/b
56.2.4.5WöhleriteNaCa2(Zr,Nb)(Si2O7)(O,OH,F)2Mon. 2 : P21
56.2.4.6Niocalite(Ca,Nb)4(Si2O7)(O,OH,F)2Mon.
56.2.4.7Hiortdahlite(Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4 Tric.
56.2.4.8RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6Tric. 1 : P1
56.2.4.9Hainite-(Y)Na2Ca4(Y,REE)Ti(Si2O7)2OF3Tric. 1 : P1
56.2.4.10Janhaugite(Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2Mon. 2/m : P21/m
56.2.4.11JenniteCa9(Si3O9)2(OH)8 · 8H2OTric.
56.2.4.13Natrokomarovite(Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2OOrth.
56.2.4.14SuoluniteCa2(H2Si2O7) · H2OOrth.
56.2.4.15MongoliteCa4Nb6Si5O24(OH)10 · nH2OTet.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.8.1EpistoliteNa2(Nb,Ti)2(Si2O7)O2 · nH2OTric.
17.8.2MurmaniteNa2Ti2(Si2O7)O2 · 2H2OTric.
17.8.3PerraultiteBaNaMn2+4Ti2(Si2O7)2O2(OH)2FMon. 2/m : B2/m
17.8.4Niocalite(Ca,Nb)4(Si2O7)(O,OH,F)2Mon.
17.8.5MongoliteCa4Nb6Si5O24(OH)10 · nH2OTet.
17.8.6FersmaniteCa4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3Tric.
17.8.7Nacareniobsite-(Ce)NbNa3Ca3(Ce,REE )(Si2O7)2OF3Mon.
17.8.8Nenadkevichite(Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2OOrth. mmm (2/m 2/m 2/m) : Pbam
17.8.9Natrokomarovite(Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2OOrth.
17.8.10WöhleriteNaCa2(Zr,Nb)(Si2O7)(O,OH,F)2Mon. 2 : P21
17.8.11BelkoviteBa3(Nb,Ti)6(Si2O7)2O12Hex.
17.8.12BaotiteBa4(Ti,Nb)8Si4O28ClTet. 4/m : I41/a
17.8.13Shcherbakovite(K,Ba)KNa(Ti,Nb)2(Si4O12)O2Orth.
17.8.14Ilímaussite-(Ce)(Na,K)7-8(Ba,K)10Ce5(Nb,Ti)6(Si3O9)4(Si9O18)O6(O,OH)24Trig. 3 2 : R3 2
17.8.16Manganbelyankinite(Mn,Ca)(Ti,Nb)5O12 · 9H2O
17.8.17Niobophyllite(K,Na)3(Fe,Mn)6(Nb,Ti)2Si8(O,OH,F)31Tric.
17.8.18Caesium-Kupletskite(Cs,K,Na)3(Mn,Fe2+)7(Ti,Nb)2Si8O24(O,OH,F)7

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 KomaroviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Portnov, A.M., G.K.Krivokoneva & T.I. Stolyarova (1971): "Komarovite, a new niobosilicate of calcium and manganese": Zap. Vses. Mineral. Obshch.: 100: 599-602.
American Mineralogist (1971): 57: 1315 (abstract)
Krivokoneva, G.K., Portnov, A.M., Semenov, E.I., and Dubakina, L.S. (1979) Komarovite: silicified pyrochlore. Doklady Akademii Nauk SSSR: 248: 443-444.

Internet Links for KomaroviteHide

Localities for KomaroviteHide

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.
Greenland
 
  • Kujalleq
    • Narsaq
Sørensen, H. (2001): The Ilimaussaq alkaline complex, South Greenland: status of mineralogical research with new results, Geology of Greenland Survey Bulletin 190, GEUS;Balić-Žunić T, Petersen O V, Bernhardt H J, Micheelsen H I (2002) The crystal structure and mineralogical description of a Na-dominant komarovite from Ilímaussaq alkaline complex, South Greenland. Neues Jahrbuch für Mineralogie, Monatshefte 2002, 497-514.
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
Pekov, I.V. & Podlesnyi, A.S. (2004): Kukisvumchorr Deposit: Mineralogy of Alkaline Pegmatites and Hydrotermalites. Mineralogical Almanac, vol. 7, 140 pages + xxiv photo's pages
Mineral News, 27 (2011), #8, 12.
        • Lovozero Massif
Arzamastsev, A., Yakovenchuk, V., Pakhomovsky, Y., & Ivanyuk, G. (2008). The Khibina and Lovozero alkaline massifs: Geology and unique mineralization. In Guidbook for 33rd International Geological Congress Excursion (No. 47, p. 58).
I. Pekov (1998) Minerals First Discovered on the Territory of the former Soviet Union; New Data on Minerals M., 2004 Vol 39 pp 5-13
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2017, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: August 21, 2017 09:38:49 Page generated: August 9, 2017 07:05:26
Go to top of page