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NaBa2Ce2FeTi2[Si4O12]2O2(OH,F) · H2O
5 - 5½
This page provides mineralogical data about Joaquinite-(Ce).

Classification of Joaquinite-(Ce)


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

60 : CYCLOSILICATES Four-Membered Rings
1 : Four-Membered Rings, as Titanosilicates

14 : Silicates not Containing Aluminum
9 : Silicates of Ti URL:
Please feel free to link to this page.

Type Occurrence of Joaquinite-(Ce)

Physical Properties of Joaquinite-(Ce)

Hardness (Mohs):
5 - 5½

Optical Data of Joaquinite-(Ce)

Biaxial (+)
RI values:
nα = 1.748 - 1.754 nβ = 1.760 - 1.767 nγ = 1.762 - 1.823
Max Birefringence:
δ = 0.014 - 0.069
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
r < v marked

Chemical Properties of Joaquinite-(Ce)

NaBa2Ce2FeTi2[Si4O12]2O2(OH,F) · H2O
Essential elements:
All elements listed in formula:

Relationship of Joaquinite-(Ce) to other Species

Other Members of Group:
Bario-orthojoaquinite(Ba,Sr)4Fe2Ti2[Si4O12]2O2 · H2O
Byelorussite-(Ce)NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2O
Orthojoaquinite-(Ce)NaBa2Ce2FeTi2[Si4O12]2O2(O,OH) · H2O
Orthojoaquinite-(La)NaBa2La2Fe2+Ti2[Si4O12]2O2(O,OH) · H2O
Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O
StrontiojoaquiniteSr2Ba2(Na,Fe)2Ti2[Si4O12]2O2(O,OH)2 · H2O
9.CE.10VerplanckiteBa2(Mn,Fe,Ti)Si2O6(O,OH,Cl,F)2 · 3H2O or near
9.CE.25Bario-orthojoaquinite(Ba,Sr)4Fe2Ti2[Si4O12]2O2 · H2O
9.CE.25Byelorussite-(Ce)NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2O
9.CE.25Orthojoaquinite-(Ce)NaBa2Ce2FeTi2[Si4O12]2O2(O,OH) · H2O
9.CE.25StrontiojoaquiniteSr2Ba2(Na,Fe)2Ti2[Si4O12]2O2(O,OH)2 · H2O
9.CE.25Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O
9.CE.25Orthojoaquinite-(La)NaBa2La2Fe2+Ti2[Si4O12]2O2(O,OH) · H2O
9.CE.30eLabuntsovite-MnNa4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10-12H2O
9.CE.30aNenadkevichite(Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2O
9.CE.30dLemmleinite-KK2(Ti,Nb)2(Si4O12)(OH,O)2 · 4H2O
9.CE.30aKorobitsyniteNa2(Ti,Nb)2(Si4O12)(OH,O)2 · 3-4H2O
9.CE.30cKuzmenkoite-MnK2Mn2+(Ti,Nb)4(Si4O12)2(OH,O)4 · 5-6H2O
9.CE.30bVuoriyarvite-KK2(Nb,Ti)2(Si4O12)(O,OH)2 · 4H2O
9.CE.30bTsepinite-NaNa2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O
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 · 10H2O
9.CE.30eLabuntsovite-FeNa4K4(Ba,K)2Fe2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O
9.CE.30dLemmleinite-BaNa2K2Ba(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2O
9.CE.30cGjerdingenite-FeK2Fe2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O
9.CE.30hNeskevaaraite-FeK3Na2Fe2+(Ti,Nb)4(Si4O12)2(O,OH)4 · 5-6 H2O
9.CE.30bTsepinite-KK2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O
9.CE.30bParatsepinite-BaBa4(Ti,Nb)8(Si4O12)4(OH,O)8 · 8H2O
9.CE.30bTsepinite-CaCa(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O
9.CE.30hAlsakharovite-ZnNaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O
9.CE.30cGjerdingenite-MnK2Mn2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O
9.CE.30cLepkhenelmite-Zn(Ba,K)2Zn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O
9.CE.30bTsepinite-SrSr(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O
9.CE.30bParatsepinite-Na(Na,Sr,K,Ca)7(Ti,Nb)8(Si4O12)4(O,OH)8·nH2O n ~ 8
9.CE.30fParalabuntsovite-MgNa8K8Mg4Ti16(Si4O12)8(OH,O)16 · 20-24H2O
9.CE.30cGjerdingenite-CaK2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O
9.CE.30cGjerdingenite-NaK2Na(Nb,Ti)4(Si4O12)2(OH,O)4 · 5H2O
9.CE.30hGutkovaite-MnK2CaMn(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2O
9.CE.30gOrganovaite-MnK2Mn(Nb,Ti)4(Si4O12)2(O,OH)4 · 5-7H2O
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 · 14H2O
9.CE.30cBurovaite-Ca(Na,K)4Ca2(Ti,Nb)8(Si4O12)4(OH,O)8 · 12H2O
9.CE.45Komarovite(Ca,Mn)Nb2[O3|Si2O7] · 3.5H2O
9.CE.45Natrokomarovite(Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2O
14.9.3LintisiteLiNa3Ti2(Si2O6)2O2 · 2H2O
14.9.7OhmiliteSr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2O
14.9.13Orthojoaquinite-(Ce)NaBa2Ce2FeTi2[Si4O12]2O2(O,OH) · H2O
14.9.14StrontiojoaquiniteSr2Ba2(Na,Fe)2Ti2[Si4O12]2O2(O,OH)2 · H2O
14.9.15Bario-orthojoaquinite(Ba,Sr)4Fe2Ti2[Si4O12]2O2 · H2O
14.9.16Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O
14.9.19Delindeite(Na,K)2(Ba,Ca)2(Ti,Fe,Al)3(Si2O7)2O2(OH)2 · 2H2O
14.9.25TisinaliteNa3H3(Mn,Ca,Fe)TiSi6(O,OH)18 · 2H2O
14.9.38KoashviteNa6(Ca,Mn)(Ti,Fe)Si6O18 · H2O

Other Names for Joaquinite-(Ce)

Name in Other Languages:

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.

References for Joaquinite-(Ce)

Reference List:
Palache, Charles & William Frederick Foshag (1932), The chemical nature of joaquinite: American Mineralogist: 17: 308-312.

Cannillo, E., F. Mazzi & G. Rossi (1972), The structure type of joaquinite: Tschermaks Mineralogische und Petrographische Mitteilungen: 17: 233-246.

American Mineralogist (1967): 52: 1762-1769.

Laird, J. & A.L. Albee (1972): Chemical composition and physical, optical, and structural properties of benitoite, neptunite and joaquinite: American Mineralogist: 57: 85-102.

Dowty, E. (1975): Crystal structure of joaquinite: American Mineralogist: 60: 872-878.

Rossman, G.R. (1975) Joaquinite: the nature of its water content and the question of four-coordinated ferrous iron. American Mineralogist: 60: 435-440.

American Mineralogist: 67: 809-816.

Internet Links for Joaquinite-(Ce)

The following Joaquinite-(Ce) specimens are currently listed for sale on

Localities for Joaquinite-(Ce)

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
  • Newfoundland and Labrador
    • Labrador
GSC locality database; L. W. Curtis And J. Gittins (1979) Aluminous and Titaniferous Clinopyroxenes from Regionally Metamorphosed Agpaitic Rocks in Central Labrador. J. Petrology 20:165-186.; Curtis, L.W. & Currie, K.L. (1977) Geology and petrology of the Red Wine complex, Central Labrador. GSC Bulletin 287, 61p. + maps
NICKEL, E.H., ROWLAND, J,F. and CHARETTE, D.J. (1964) Niobophyllite – the niobium analogue of astrophyllite; a new mineral; Nickel, E.H., J.F. Rowland, and D.J. Charette (1964) Niobophyllite - the niobium analogue of astrophyllite; a new mineral from Seal Lake, Labrador. Can. Mineral., 8, 40-52.
GSC locality database; GSC database locality No. 4100
  • Québec
    • 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.
  • Kujalleq
    • Narsaq
[Mineralogical Record - Vol 24 No 2]; Petersen, O.V. (2001): List of all minerals identified in the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin. 190, 25-33
        • Kuannersuit Plateau (Kvanefjeld)
Semenov, E.I. et al. (1967): Rare Earths in minerals of the Joaquinite group. American Mineralogist. 52, 1762-1769; Semenov, E. (2001): Notes on Ephesite, Terskite, Na-Komarovite, Ceriopyrochlore-(Ce), Joaquinite-(Ce) and other minerals from the Ilimaussaq alkaline complex, South Greenland, Geology of Greenland Survey Bulletin 190, 123-125
  • Baranya Co.
    • Mecsek Mts
      • Hosszúhetény
      • Pécs
  • Arkansas
    • Hot Spring Co.
      • Magnet Cove
Barwood, H (1995), Benitoite and Joaquinite in Arkansas, Min.News: 11(5):2, 5.
Howard, 1987. Mineral Species of Arkansas, addenda
      • Little Rock
Rocks and Minerals, (1989) 64:314-322
  • California
    • San Benito Co.
      • Diablo Range
        • New Idria District
          • Picacho Peak
            • Clear Creek area
              • Hernandez
                • Clear Creek
Mineralogical Research Company
Joseph F. Cooper Jr., Gail E. Dunning, Ted A.Hadley (2003) Minerology of the Victor Claim, Clear Creek Area, New Idria District, San Benito County, California.
          • San Benito River headwaters area
            • Dallas Gem Mine area
Louderback, George Davis & Walter C. Blasdale (1909), Benitoite, its mineralogy, paragenesis and mode of occurrence: University of California, Department of Geological Sciences Bulletin: 5: 376; Palache, Charles & William Frederick Foshag (1932), The chemical nature of joaquinite: American Mineralogist: 17: 308-312; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 102, 234; Wise, W.S & Gill, R.H. (1977): Minerals of the Benitoite Gem mine. Mineralogical Record 8, 442-452; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 470.; William S. Wise (1982) Strontiojoaquinite and bario-orthojoaquinite: two new members of the joaquinite group . American Mineralogist 67:809-81
              • North of the Dallas Gem Mine
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 467.
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