Hochelagaite Mineral Data + 
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- 8.6.1.1 Franconite Na2Nb4O11·9(H2O) Unk Mono
- 8.6.1.2 Hochelagaite (Ca,Na,Sr)Nb4O11·8(H2O) Unk Mono
- 8.6.1.3 Ternovite! (Mg,Ca)Nb4O11-n(H2O)wheren~10 P 2/m,P 2,Pm Mono
- IV/D.06-10 Belyankinite Ca1-2(Ti,Zr,Nb)5O12·9(H2O)(?) None
- IV/D.06-20 Manganbelyankinite (Mn,Ca)(Ti,Nb)5O12·9(H2O) None
- IV/D.06-30 Gerasimovskite (Mn,Ca)(Nb,Ti)5O12·9(H2O)(?) None
- IV/D.06-35 Ternovite! (Mg,Ca)Nb4O11-n(H2O)wheren~10 P 2/m,P 2,Pm Mono
- IV/D.06-40 Franconite Na2Nb4O11·9(H2O) Unk Mono
- IV/D.06-50 Hochelagaite (Ca,Na,Sr)Nb4O11·8(H2O) Unk Mono
General Hochelagaite Information |
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 Chemical Formula: |
(Ca,Na,Sr)Nb4O11·8(H2O) | ||
| Composition: |
Molecular Weight = 734.68 gm | ||
| Sodium 0.78 % Na 1.05 % Na2O | |||
| Strontium 1.79 % Sr 2.12 % SrO | |||
| Calcium 3.27 % Ca 4.58 % CaO | |||
| Niobium 50.58 % Nb 72.36 % Nb2O5 | |||
| Hydrogen 2.20 % H 19.62 % H2O | |||
| Oxygen 41.38 % O | |||
| ______ ______ | |||
| 100.00 % 99.73 % = TOTAL OXIDE | |||
| Empirical Formula: |
Ca0.6Na0.25Sr0.15Nb4O11·8(H2O) | ||
| Environment: |
In vugs in a lawsonite-bearing sill. | ||
| IMA Status: |
Approved IMA 1986 | ||
| Locality: |
Francon quarry, St. Michel district, Montreal, Quebec, Canada. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for "Hochelaga," the Native American name for Montreal, Canada. | ||
| Synonym: |
IMA1983-088 | ||
Hochelagaite Image | |||
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Images:
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Hochelagaite Crystallography |
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| Axial Ratios: |
a:b:c =1.5512:1:0.5004 | ||
| Cell Dimensions: |
a = 19.98, b = 12.88, c = 6.446, Z = 4; beta = 93.41° V = 1,655.89 Den(Calc)= 2.95 | ||
| Crystal System: |
MonoclinicSpace Group: Unk | ||
| X Ray Diffraction: |
By Intensity(I/Io): 10(1), 3.115(0.8), 5.39(0.5), | ||
Physical Properties of Hochelagaite |
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| Cleavage: |
None | ||
| Color: |
White. | ||
| Density: |
2.85 - 2.94, Average = 2.89 | ||
| Diaphaniety: |
Transparent to Translucent | ||
| Habit: |
Globular - Spherical, or nearly so, rounded forms (e.g. wavellite). | ||
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. | ||
| Hardness: |
4 - Fluorite | ||
| Luminescence: |
Non-fluorescent. | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Hochelagaite |
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| Gladstone-Dale: |
CI meas= 0.017 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.036 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2655,KPDmeas= 0.2706,KC= 0.2753 |
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| Optical Data: |
Biaxial (+), a=1.72, b=1.81, g=1.82, bire=0.1000, 2V(Calc)=34, 2V(Meas)=35. | ||
Calculated Properties of Hochelagaite |
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| Electron Density: |
relectron=2.78 gm/cc |
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| Fermion Index |
Fermion Index = 0.00149 Boson Index = 0.99851 |
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| Photoelectric: |
PEHochelagaite = 77.00 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hochelagaite is Not Radioactive |
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Hochelagaite Classification |
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| Dana Class: |
8.6.1.2 (8)Multiple Oxides with Nb, Ta, and Ti | ||
| (8.6)Dana Type | |||
| (8.6.1)Dana Group | |||
| Strunz Class: |
IV/D.06-50 IV - Oxides | ||
| IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds) | |||
| IV/D.06 - Belyankinite - Hochelagaite series | |||
Other Hochelagaite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Hochelagaite : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 -Athena 5 - EUROmin Project 6 -Google Images 7 -Google Scholar 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 -École des Mines de Paris Search for Hochelagaite using: Visit our Advertisers for Hochelagaite : Translate Hochelagaite Mineral Data : Ask about Hochelagaite here : Print or Cut-and-Paste your Hochelagaite Specimen Label here :
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