East Otago Volcanic Province, Otago Region, New Zealandi
| Regional Level Types | |
|---|---|
| East Otago Volcanic Province | Volcanic Province |
| Otago Region | Region |
| New Zealand | Country |
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Latitude & Longitude (WGS84):
45° 50' 54'' South , 170° 38' 17'' East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~0km
Type:
Köppen climate type:
The province is centred on the middle reaches of Otago Harbour, around which are distributed the products of the deeply dissected Dunedin Volcano, Otago Peninsula, Dunedin City, Otago Region, New Zealand, the present diameter of which is c. 30 km. Peripheral parts of the province extend to the SW and c. 90 km to the north and NW and include remnants of flows, tuffs, plugs and dikes referred to as the Waipiata Volcanic Formation (Coombs & Wilkinson 1969). In the NE there is an overlap with the volcanic rocks of NE Otago Volcanic Field, Canterbury Region, New Zealand.
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Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities11 valid minerals.
Rock Types Recorded
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Rock list contains entries from the region specified including sub-localities
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Alphabetical List Tree DiagramDetailed Mineral List:
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 9 - Silicates | |||
|---|---|---|---|
| ⓘ | Augite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| ⓘ | Augite var. Titanium-bearing Augite | 9.DA.15 | (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6 |
| ⓘ | Aegirine-augite | 9.DA.20 | (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6 |
| ⓘ | Kaersutite | 9.DE.15 | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| ⓘ | Aenigmatite | 9.DH.40 | Na4[Fe2+10Ti2]O4[Si12O36] |
| ⓘ | Nepheline | 9.FA.05 | Na3K(Al4Si4O16) |
| ⓘ | Sanidine | 9.FA.30 | K(AlSi3O8) |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| ⓘ | var. Andesine | 9.FA.35 | (Na,Ca)[Al(Si,Al)Si2O8] |
| ⓘ | Anorthite | 9.FA.35 | Ca(Al2Si2O8) |
| ⓘ | Albite var. Anorthoclase | 9.FA.35 | (Na,K)AlSi3O8 |
| ⓘ | Anorthite var. Bytownite | 9.FA.35 | (Ca,Na)[Al(Al,Si)Si2O8] |
| ⓘ | Sodalite | 9.FB.10 | Na4(Si3Al3)O12Cl |
| ⓘ | 'Zeolite Group' | 9.G0. | |
| ⓘ | Analcime | 9.GB.05 | Na(AlSi2O6) · H2O |
| Unclassified | |||
| ⓘ | 'Alkali Feldspar' | - | |
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
| ⓘ | 'Alkali amphibole' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Analcime | Na(AlSi2O6) · H2O |
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| O | Oxygen | |
| O | ⓘ Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| O | ⓘ Aenigmatite | Na4[Fe102+Ti2]O4[Si12O36] |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Analcime | Na(AlSi2O6) · H2O |
| O | ⓘ Albite var. Andesine | (Na,Ca)[Al(Si,Al)Si2O8] |
| O | ⓘ Anorthite | Ca(Al2Si2O8) |
| O | ⓘ Albite var. Anorthoclase | (Na,K)AlSi3O8 |
| O | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
| O | ⓘ Diopside | CaMgSi2O6 |
| O | ⓘ Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| O | ⓘ Nepheline | Na3K(Al4Si4O16) |
| O | ⓘ Sanidine | K(AlSi3O8) |
| O | ⓘ Sodalite | Na4(Si3Al3)O12Cl |
| O | ⓘ Fayalite-Forsterite Series | |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | ⓘ Augite var. Titanium-bearing Augite | (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6 |
| O | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| F | Fluorine | |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| F | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Na | Sodium | |
| Na | ⓘ Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Na | ⓘ Aenigmatite | Na4[Fe102+Ti2]O4[Si12O36] |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Na | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Na | ⓘ Albite var. Andesine | (Na,Ca)[Al(Si,Al)Si2O8] |
| Na | ⓘ Albite var. Anorthoclase | (Na,K)AlSi3O8 |
| Na | ⓘ Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Na | ⓘ Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| Na | ⓘ Nepheline | Na3K(Al4Si4O16) |
| Na | ⓘ Sodalite | Na4(Si3Al3)O12Cl |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Na | ⓘ Augite var. Titanium-bearing Augite | (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6 |
| Mg | Magnesium | |
| Mg | ⓘ Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Mg | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mg | ⓘ Diopside | CaMgSi2O6 |
| Mg | ⓘ Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| Mg | ⓘ Fayalite-Forsterite Series | |
| Mg | ⓘ Augite var. Titanium-bearing Augite | (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6 |
| Al | Aluminium | |
| Al | ⓘ Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Al | ⓘ Albite var. Andesine | (Na,Ca)[Al(Si,Al)Si2O8] |
| Al | ⓘ Anorthite | Ca(Al2Si2O8) |
| Al | ⓘ Albite var. Anorthoclase | (Na,K)AlSi3O8 |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Al | ⓘ Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| Al | ⓘ Nepheline | Na3K(Al4Si4O16) |
| Al | ⓘ Sanidine | K(AlSi3O8) |
| Al | ⓘ Sodalite | Na4(Si3Al3)O12Cl |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Al | ⓘ Augite var. Titanium-bearing Augite | (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6 |
| Si | Silicon | |
| Si | ⓘ Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Si | ⓘ Aenigmatite | Na4[Fe102+Ti2]O4[Si12O36] |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Analcime | Na(AlSi2O6) · H2O |
| Si | ⓘ Albite var. Andesine | (Na,Ca)[Al(Si,Al)Si2O8] |
| Si | ⓘ Anorthite | Ca(Al2Si2O8) |
| Si | ⓘ Albite var. Anorthoclase | (Na,K)AlSi3O8 |
| Si | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Si | ⓘ Diopside | CaMgSi2O6 |
| Si | ⓘ Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| Si | ⓘ Nepheline | Na3K(Al4Si4O16) |
| Si | ⓘ Sanidine | K(AlSi3O8) |
| Si | ⓘ Sodalite | Na4(Si3Al3)O12Cl |
| Si | ⓘ Fayalite-Forsterite Series | |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | ⓘ Augite var. Titanium-bearing Augite | (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6 |
| P | Phosphorus | |
| P | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Cl | Chlorine | |
| Cl | ⓘ Sodalite | Na4(Si3Al3)O12Cl |
| Cl | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| K | Potassium | |
| K | ⓘ Albite var. Anorthoclase | (Na,K)AlSi3O8 |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | ⓘ Nepheline | Na3K(Al4Si4O16) |
| K | ⓘ Sanidine | K(AlSi3O8) |
| Ca | Calcium | |
| Ca | ⓘ Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Ca | ⓘ Albite var. Andesine | (Na,Ca)[Al(Si,Al)Si2O8] |
| Ca | ⓘ Anorthite | Ca(Al2Si2O8) |
| Ca | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ca | ⓘ Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Ca | ⓘ Diopside | CaMgSi2O6 |
| Ca | ⓘ Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ca | ⓘ Augite var. Titanium-bearing Augite | (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6 |
| Ca | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Ti | Titanium | |
| Ti | ⓘ Aenigmatite | Na4[Fe102+Ti2]O4[Si12O36] |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Ti | ⓘ Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| Ti | ⓘ Augite var. Titanium-bearing Augite | (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6 |
| Fe | Iron | |
| Fe | ⓘ Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Fe | ⓘ Aenigmatite | Na4[Fe102+Ti2]O4[Si12O36] |
| Fe | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | ⓘ Fayalite-Forsterite Series | |
| Fe | ⓘ Augite var. Titanium-bearing Augite | (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6 |
Localities in this Region
- Otago Region
- Dunedin City
- Otago Peninsula
- Dunedin City
Other Regions, Features and Areas that Intersect
Australian Plate
- Haast SchistAccretionary Complex
New Zealand
- South IslandIsland
- Southern AlpsMountain Range
Pacific PlateTectonic Plate
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References
COOMBS, D. S., WILKINSON, J. F. G. (1969) Lineages and Fractionation Trends in Undersaturated Volcanic Rocks from the East Otago Volcanic Province (New Zealand) and Related Rocks. Journal of Petrology, 10 (3) 440-501 doi:10.1093/petrology/10.3.440
Price, R. C., Compston, W. (1973) The geochemistry of the Dunedin Volcano: Strontium isotope chemistry. Contributions to Mineralogy and Petrology, 42 (1) 55-61 doi:10.1007/bf00521647
McDougall, Ian, Coombs, D. S. (1973) Potassium-argon ages for the Dunedin volcano and outlying volcanics. New Zealand Journal of Geology and Geophysics, 16 (2) 179-188 doi:10.1080/00288306.1973.10431451
Price, R. C., Chappell, B. W. (1975) Fractional crystallisation and the petrology of Dunedin volcano. Contributions to Mineralogy and Petrology, 53 (3) 157-182 doi:10.1007/bf00372602
Le Maitre, R. W. - Ed. (2002) Igneous Rocks - A Classification and Glossary of Terms (2nd ed.) Cambridge University Press. doi:10.1017/cbo9780511535581