Hochelagaite (original) (raw)
A valid IMA mineral species
About HochelagaiteHide
This section is currently hidden. Click the show button to view.
Formula:
(Ca,Na,Sr)(Nb,Ti,Si,Al)4O11 · 8H2O
Crystal System:
Monoclinic
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.
Unique IdentifiersHide
This section is currently hidden. Click the show button to view.
Long-form identifier:
mindat:1:1:1912:1
ddeae16e-600e-4d5b-b714-6c6111e4302b
IMA Classification of HochelagaiteHide
This section is currently hidden. Click the show button to view.
IMA Formula:
CaNb4O11 · 8H2O
Type description reference:
Jambor, J. L., Sabina, A. P., Roberts, A. C., Bonardi, M., Owens, D. R., Sturman, B. D. (1986) Hochelagaite, a new calcium niobium oxide mineral from Montreal, Quebec. The Canadian Mineralogist, 24 (3) 449-453
Classification of HochelagaiteHide
This section is currently hidden. Click the show button to view.
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
Mineral SymbolsHide
This section is currently hidden. Click the show button to view.
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Haga | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of HochelagaiteHide
This section is currently hidden. Click the show button to view.
Comment:
flexible when fibrous.
Density:
2.89(1) g/cm3 (Measured) 2.883 g/cm3 (Calculated)
Optical Data of HochelagaiteHide
This section is currently hidden. Click the show button to view.
RI values:
_n_α = 1.720(1) _n_β = 1.810(1) _n_γ = 1.820(1)
2V:
Measured: 35° (5), Calculated: 34°
δ = 0.100
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Dispersion:
r < v moderate
Chemistry of HochelagaiteHide
This section is currently hidden. Click the show button to view.
Mindat Formula:
(Ca,Na,Sr)(Nb,Ti,Si,Al)4O11 · 8H2O
Common Impurities:
Ti,Si,Al
Crystallography of HochelagaiteHide
This section is currently hidden. Click the show button to view.
Crystal System:
Monoclinic
Cell Parameters:
a = 19.98(2) Å, b = 12.88(1) Å, c = 6.446(6) Å
β = 93.41(8)°
Ratio:
a:b:c = 1.551 : 1 : 0.5
Unit Cell V:
1,655.89 ų (Calculated from Unit Cell)
Comment:
Point Group: n.d.; Space Group: n.d.
X-Ray Powder DiffractionHide
This section is currently hidden. Click the show button to view.
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.0 Å | (10) |
| 3.115 Å | (8) |
| 3.208 Å | (7) |
| 5.39 Å | (5) |
| 4.96 Å | (5b) |
| 2.799 Å | (4) |
| 1.979 Å | (3b) |
Geological EnvironmentHide
This section is currently hidden. Click the show button to view.
Type Occurrence of HochelagaiteHide
This section is currently hidden. Click the show button to view.
Place of Conservation of Type Material:
Geological Survey of Canada, Ottawa, 64285–64288; Royal Ontario Museum, Toronto, Canada, M37547, M37548.
Geological Setting of Type Material:
cavities in altered pegmatite dikes, hornfels, sodalite syenite, or miarolitic cavities, associated with an intrusive alkalic gabbro-syenite complex
Reference:
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.
Synonyms of HochelagaiteHide
This section is currently hidden. Click the show button to view.
Other Language Names for HochelagaiteHide
This section is currently hidden. Click the show button to view.
Relationship of Hochelagaite to other SpeciesHide
This section is currently hidden. Click the show button to view.
Other Members of this group:
Common AssociatesHide
This section is currently hidden. Click the show button to view.
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
This section is currently hidden. Click the show button to view.
Fluorescence of HochelagaiteHide
This section is currently hidden. Click the show button to view.
weak pale yellow fluorescence under SW and LW UV
Other InformationHide
This section is currently hidden. Click the show button to view.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for HochelagaiteHide
This section is currently hidden. Click the show button to view.
References for HochelagaiteHide
This section is currently hidden. Click the show button to view.
Reference List:
Jambor, J. L., Sabina, A. P., Roberts, A. C., Bonardi, M., Owens, D. R., Sturman, B. D. (1986) Hochelagaite, a new calcium niobium oxide mineral from Montreal, Quebec. The Canadian Mineralogist, 24 (3) 449-453
Localities for HochelagaiteHide
This section is currently hidden. Click the show button to view.
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 section is currently hidden. Click the show button to view.
- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.