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Main Range Volcanic Field, Toowoomba Region, Queensland, Australiai
Regional Level Types
Main Range Volcanic FieldVolcanic Field
Toowoomba RegionRegion
QueenslandState
AustraliaCountry

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PhotosMapsSearch
09413390017361124364544.jpg
Analcime, etc.

Main Range Volcanic Field, Toowoomba Region, Queensland, Australia
05546290017360850721718.jpg
Erionite Subgroup, etc.

Main Range Volcanic Field, Toowoomba Region, Queensland, Australia
04907680017272365127153.jpg
Chabazite, etc.

Main Range Volcanic Field, Toowoomba Region, Queensland, Australia
09413390017361124364544.jpg
Analcime, etc.

Main Range Volcanic Field, Toowoomba Region, Queensland, Australia
03539610017361299375030.jpg
Erionite Subgroup, etc.

Main Range Volcanic Field, Toowoomba Region, Queensland, Australia
05617200017272304389235.jpg
Chabazite, etc.

Main Range Volcanic Field, Toowoomba Region, Queensland, Australia
09413390017361124364544.jpg
Analcime, etc.

Main Range Volcanic Field, Toowoomba Region, Queensland, Australia
05546290017360850721718.jpg
Erionite Subgroup, etc.

Main Range Volcanic Field, Toowoomba Region, Queensland, Australia
Latitude & Longitude (WGS84):
28° 5' 57'' South , 152° 25' 5'' East
Latitude & Longitude (decimal):
-28.09917,152.41806
GeoHash:
G#: r7h2hkeqq
GRN:
S19E96
Type:
Volcanic Field
Age:
29.1 to 21.1 Ma
Geologic Time:
Cenozoic
Dating method:
K-Ar whole rock
Reference for age:
Webb, A. W., Stevens, N. C., & McDougall, I. (1967). Isotopic age determinations on Tertiary volcanic rocks and intrusives of southeastern Queensland. In Proceedings of the Royal Society of Queensland (Vol. 79, No. 7, pp. 79-92).
Köppen climate type:
Cfa : Humid subtropical climate
Mindat Locality ID:
343798
Long-form identifier:
mindat:1:2:343798:1
GUID (UUID V4):
0


Main Range and Bunya Mountains, Moreton Bay Region, Queensland, Australia form a continuous belt of lavas and intrusions extending NNE for 220km from the southern boundary of Queensland. The volcanic rocks have an area of c. 4900km² and an estimated volume of c. 1000km² (Stevens et al. 1989).

The southern part of Main Range is heavily dissected and has high peaks, whereas the northern part forms a plateau with mesas developed in some parts. Two volcanic formations are distinguished in southern Main Range: The Lower Governors Chair Volcanics and the upper Superbus Basalt, they have a combined thickness of c. 900m.

Northern Main Range has 2 formations: Meringandan Volcanics and Tooowoomba Basalt.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

5 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Analcime
Formula: Na(AlSi2O6) · H2O
ⓘ Calcite
Formula: CaCO3
ⓘ Calcite var. Iron-bearing Calcite
Formula: (Ca,Fe)CO3
ⓘ 'Chabazite'
ⓘ 'Erionite Subgroup'
Formula: M2[Al4Si14O36] · 15H2O
ⓘ 'Feldspar Group'
ⓘ 'Manganese Oxides'
References:
Rod Martin CollectionIdentified by Rod Martin: Visual Identification
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
ⓘ Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
ⓘ Thomsonite-Ca
Formula: NaCa2[Al5Si5O20] · 6H2O
References:
Vic Cloete.
ⓘ 'Thomsonite Subgroup'
References:
Rod Martin CollectionIdentified by Rod Martin: Visual Identification

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘvar. Iron-bearing Calcite5.AB.05(Ca,Fe)CO3
Group 9 - Silicates
ⓘSaponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
ⓘThomsonite-Ca9.GA.10NaCa2[Al5Si5O20] · 6H2O
ⓘAnalcime9.GB.05Na(AlSi2O6) · H2O
Unclassified
ⓘ'Chabazite'-
ⓘ'Erionite Subgroup'-M2[Al4Si14O36] · 15H2O
ⓘ'Feldspar Group'-
ⓘ'Manganese Oxides'-
ⓘ'Thomsonite Subgroup'-

List of minerals for each chemical element

HHydrogen
Hⓘ AnalcimeNa(AlSi2O6) · H2O
Hⓘ Erionite SubgroupM2[Al4Si14O36] · 15H2O
Hⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Hⓘ Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
CCarbon
Cⓘ CalciteCaCO3
Cⓘ Calcite var. Iron-bearing Calcite(Ca,Fe)CO3
OOxygen
Oⓘ AnalcimeNa(AlSi2O6) · H2O
Oⓘ CalciteCaCO3
Oⓘ Erionite SubgroupM2[Al4Si14O36] · 15H2O
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Oⓘ Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
Oⓘ Calcite var. Iron-bearing Calcite(Ca,Fe)CO3
NaSodium
Naⓘ AnalcimeNa(AlSi2O6) · H2O
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
MgMagnesium
Mgⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
AlAluminium
Alⓘ AnalcimeNa(AlSi2O6) · H2O
Alⓘ Erionite SubgroupM2[Al4Si14O36] · 15H2O
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Alⓘ Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
SiSilicon
Siⓘ AnalcimeNa(AlSi2O6) · H2O
Siⓘ Erionite SubgroupM2[Al4Si14O36] · 15H2O
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Siⓘ Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
KPotassium
Kⓘ NephelineNa3K(Al4Si4O16)
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Caⓘ Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
Caⓘ Calcite var. Iron-bearing Calcite(Ca,Fe)CO3
FeIron
Feⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Feⓘ Calcite var. Iron-bearing Calcite(Ca,Fe)CO3

Geochronology

Mineralization age: Oligocene : 25.2 ± 0.2 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Cenozoic
  Paleogene
   Oligocene
ⓘ Feldspar Group25.2 ± 0.2 MaFlinders Peak, Main Range Volcanic Field, Toowoomba Region, Queensland, Australia

Localities in this Region

Australia

Other Regions, Features and Areas containing this locality

Australia
Australian PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Webb, A. W., Stevens, N. C., & McDougall, I. (1967). Isotopic age determinations on Tertiary volcanic rocks and intrusives of southeastern Queensland. In Proceedings of the Royal Society of Queensland (Vol. 79, No. 7, pp. 79-92).
Ewart, A., Baxter, K., & Ross, J. A. (1980). The petrology and petrogenesis of the Tertiary anorogenic mafic lavas of southern and central Queensland, Australia—possible implications for crustal thickening. Contributions to Mineralogy and Petrology, 75(2), 129-152.
EWART, A. (1982) Petrogenesis of the Tertiary Anorogenic Volcanic Series of Southern Queensland, Australia, in the Light of Trace Element Geochemistry and O, Sr and Pb Isotopes. Journal of Petrology, 23 (3) 344-382 doi:10.1093/petrology/23.3.344
Ewart, A., & Grenfell, A. T. (1985). Cainozoic volcanic centres in southeastern Queensland: with special reference to the Main Range, Bunya Mountains, and the volcanic centres of the northern Brisbane coastal region.Department of Geology, University of Queensland, Papers, 11 (part 3), 1-57.
Johnson, R. W. - Ed. (1989) Intraplate Volcanism in Eastern Australia and New Zealand. Cambridge University Press.pp.111-112
Woolley, Alan R. (2019) Alkaline Rocks and Carbonatites of the World. Part 4: Antarctica, Asia and Europe (excluding the former USSR), Australasia and Oceanic Islands. The Geological Society of London. doi:10.1144/mpar4
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