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Hochelagaite

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Formula:
CaNb4O11 · 8H2O
System:
Monoclinic
Hardness:
4
Name:
The mineral is named after the indigenous Algonquin Indian name of the settlement, Hochelaga, situated on the present site of the city of Montréal when the first Europeans arrived.
Probably the lower-hydrate counterpart of 'Unnamed MSH UK56'.


Classification of Hochelagaite

Approved
4.FM.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
M : Hydroxides with H2O +- (OH); unclassified
8.6.1.2

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
6 : (AB)6O11·nH2O
18.1.14

18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U

Physical Properties of Hochelagaite

Hardness (Mohs):
4

Optical Data of Hochelagaite

Type:
Biaxial (+)
RI values:
nα = 1.720 nβ = 1.810 nγ = 1.820
2V:
Measured: 35° , Calculated: 34°
Max Birefringence:
δ = 0.100
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r < v moderate

Chemical Properties of Hochelagaite

IMA Formula:
CaNb4O11 · 8H2O
Elements listed in formula:
Common Impurities:
Ti,Si,Al

Crystallography of Hochelagaite

Crystal System:
Monoclinic
Cell Parameters:
a = 19.88 Å, b = 12.83 Å, c = 6.44 Å
β = 93.2°
Ratio:
a:b:c = 1.549 : 1 : 0.502
Unit Cell Volume:
V 1,640.03 ų (Calculated from Unit Cell)

Type Occurrence of Hochelagaite

Relationship of Hochelagaite to other Species

Other Members of Group:
FranconiteNa(Nb2O5)(OH) · 3H2O
Ternovite(Mg,Ca)Nb4O11 · nH2O
4.FM.15FranconiteNaNb2O5(OH) · 3H2O
4.FM.15TernoviteMgNb4O11 · 8-12H2O
4.FM.25BelyankiniteCa1-2(Ti,Zr,Nb)5O12 · 9H2O
4.FM.25GerasimovskiteMn2+(Ti,Nb)5O12 · 9H2O
4.FM.25ManganbelyankiniteMn2+(Ti,Nb)5O12 · 9H2O
4.FM.30SilhydriteSi3O6 · H2O
4.FM.35CuzticiteFe23+Te6+O6 · 3H2O
18.1.1LithiotantiteLiTa3O8
18.1.2LueshiteNaNbO3
18.1.3NatroniobiteNaNbO3
18.1.4FranconiteNaNb2O5(OH) · 3H2O
18.1.5NatrotantiteNa2Ta4O11
18.1.6IrtyshiteNa2Ta4O11
18.1.7Rankamaite(Na,K,Pb)(Ta,Nb,Al)4(O,OH)10
18.1.8Hydropyrochlore(H2O,◻)2Nb2(O,OH)6(H2O)
18.1.9CalciotantiteCaTa4O11
18.1.10RynersoniteCaTa2O6
18.1.11Microlite Group(Ca,Na)2Ta2(O,OH,F)7
18.1.12BelyankiniteCa1-2(Ti,Zr,Nb)5O12 · 9H2O
18.1.13LatrappiteCa2NbFe3+O6
18.1.15Bariomicrolite (of Hogarth 1977)
18.1.16ParabariomicroliteBaTa4O10(OH)2 · 2H2O
18.1.17Bariopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6Z
18.1.18AlumotantiteAlTaO4
18.1.19SimpsoniteAl4Ta3O13(OH)
18.1.20SosedkoiteK5Al2Ta22O60
18.1.21ThoreauliteSn2+Ta2O6
18.1.22Stannomicrolite (of Hogarth 1977)
18.1.23FoorditeSn2+Nb2O6
18.1.24ChangbaiitePbNb2O6
18.1.25Plumbopyrochlore (of Skorobogatova et al.)A2Nb2(O,OH)6Z
18.1.26Plumbomicrolite (of Hogarth 1977)
18.1.27StibiocolumbiteSbNbO4
18.1.28StibiotantaliteSb3+TaO4
18.1.29Natrobistantite
18.1.30CesplumtantiteCs2Pb3Ta8O24
18.1.31Stibiomicrolite (of Groat et al.)
18.1.32Cesstibtantite
18.1.34BismutotantaliteBiTaO4
18.1.35Bismutomicrolite (of Hogarth 1977)
18.1.36Tantalite-(Mn)Mn2+Ta2O6
18.1.37GerasimovskiteMn2+(Ti,Nb)5O12 · 9H2O
18.1.38Tapiolite-(Mn)Mn2+Ta2O6
18.1.39Columbite-(Mn)Mn2+Nb2O6
18.1.40WodginiteMn2+Sn4+Ta2O8
18.1.41Ixiolite(Ta,Mn,Nb)O2
18.1.42Columbite-(Fe)Fe2+Nb2O6
18.1.43Tantalite-(Fe)Fe2+Ta2O6
18.1.44Columbite
18.1.45Tantalite(Mn,Fe)(Ta,Nb)2O6
18.1.46Tapiolite(Fe,Mn)(Ta,Nb)2O6
18.1.47Tapiolite-(Fe)Fe2+Ta2O6
18.1.48Columbite-(Mg)MgNb2O6
18.1.50Strüverite(Ti,Ta,Fe)O2
18.1.51 Staringite(Fe,Mn)x(Ta,Nb)2xSn6-3xO12

Other Names for Hochelagaite

Name in Other Languages:
Norwegian (Bokmål):Hochelagaitt
Spanish:Hochelagaita

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 Hochelagaite

Reference List:
JAMBOR, J.L., SABINA, A.P., ROBERTS, A.C., BONARDI, M., OWENS, D.R., and STURMAN, B.D. (1986) Hochelagaite, a new calcium niobium oxide mineral from Montreal, Quebec. Canadian Mineralogist, 24, 449 453.

TARASSOFF, P., HORVÁTH, L. and PFENNINGER-HORVÁTH, E. (2006) Famous mineral localities: the Francon quarry, Montréal, Québec. Mineralogical Record, 37, 5-60.

HARING, M.M. and McDONALD, A.M. (2014) Franconite, NaNb2O5(OH)•3H2O: structure determination and the role of H-bonding, with comments on the crystal chemistry of franconite-related minerals. Mineralogical Magazine 78, 591-607.

Internet Links for Hochelagaite

mindat.org URL:
https://www.mindat.org/min-1912.html
Please feel free to link to this page.

Localities for Hochelagaite

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.
(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.
Canada (TL)
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
JAMBOR, J.L., SABINA, A.P., ROBERTS, A.C., BONARDI, M., OWENS, D.R., and STURMAN, B.D. (1986) Hochelagaite, a new calcium niobium oxide mineral from Montreal, Quebec. Canadian Mineralogist, 24, 449 453. Horváth, L and Gault, R.A. (1990), The mineralogy of Mont Saint-Hilaire Quebec. Mineralogical Record: 21: 284-359.
      • Lajemmerais RCM
        • Varennes & St-Amable
HORVÁTH, L., PFENNINGER HORVÁTH, E., GAULT, R.A., and TARASSOFF, P. (1998) Mineralogy of the Saint Amable sill, Varennes and Saint Amable, Québec, Canada. Mineralogical Record, 29, 83 118.
Horváth, L., Pfenninger-Horváth, E., Gault, R. A., & Tarassoff, P. (1998): Mineralogy of the Saint-Amable Sill, Varennes and Saint-Amable, Québec. Mineralogical Record, 29: 83-118.
    • Montréal
JAMBOR, J.L., SABINA, A.P., ROBERTS, A.C., BONARDI, M., OWENS, D.R., and STURMAN, B.D. (1986) Hochelagaite, a new calcium niobium oxide mineral from Montreal, Quebec. Canadian Mineralogist, 24, 449 453. TARASSOFF, P., HORVÁTH, L. and PFENNINGER-HORVÁTH, E. (2006) Famous mineral localities: the Francon quarry, Montréal, Québec. Mineralogical Record, 37, 5-60.
Norway
 
  • Vestfold
    • Larvik
      • Malerød
Larsen, A.O. (ed.) (2010): "The Langesundsfjord, History, Geology, Pegmatites, Minerals" , Bode Verlag GmBH.; Andresen, P. (2011): Mineralene fra Midtfjellet larvikittbrudd, Malerød, Larvik. Norsk Bergverksmuseum Skrift. 46: 41-47
Larsen, A.O. (2001): Chemical composition of catapleiites from the syenite pegmatites in the Larvik plutonic complex, Norway. Bergverksmuseets Skrift 18, 5-9
    • Sandefjord
      • Vesterøya
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p;Berge, S.A., Larsen, K.E. & Andersen, F. (2011): Buer, Vesterøya, Sandefjord- en typelokalitet for et nytt mineral. Norsk Bergverksmuseum Skrift. 46: 49-56
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
Mikhailova, Y.A., Konopleva, N.G., Yakovenchuk, V.N., Ivanyuk, G.Y., Men’shikov, Y.P., and Pakhomovsky, Y.A. (2007): Geology of Ore Deposits 49(7), 590-598.
      • Northern Karelia
Min Rec (2006) 37: 5-60
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
Pekov (2001)
USA
 
  • New Mexico
    • Otero Co.
      • Cornudas Mts
Michael C Michayluk collection
Mineral and/or Locality  
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