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Vredefort impact structure, Fezile Dabi District Municipality, Free State, South Africai
Regional Level Types
Vredefort impact structureImpact Structure
Fezile Dabi District MunicipalityMunicipality
Free StateProvince
South AfricaCountry

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PhotosMapsSearchMineralogy
Age:
2023 ± 4 Ma
Geologic Time:
Dating method:
Dating shocked zircons in pseudotachylites and granophyre dykes.
Reference for age:
Kamo et al., 1996
Largest Settlements:
PlacePopulation
Parys71,319 (2012)
Vredefort10,649 (2012)
Mindat Locality ID:
131761
Long-form identifier:
mindat:1:2:131761:2
GUID (UUID V4):
0
Other/historical names associated with this locality:
Vredefort dome


A huge meteorite impact structure, formed about 2 billion years ago.
Original diameter estimated to be 250-300 km.

"The dome in the centre of the impact structure was originally thought to have been formed by a volcanic explosion, but in the mid-1990s, evidence revealed it was the site of a huge bolide impact, as telltale shatter cones were discovered in the bed of the nearby Vaal River." (Wikipedia)

An UNESCO World Heritage Site.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

15 valid minerals.

Rock Types Recorded


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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Amphibole Supergroup'
Formula: AB2C5(T8O22)W2
Andalusite
Formula: Al2(SiO4)O
'Banded ironstone'
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Coesite
Formula: SiO2
Cordierite
Formula: Mg2Al4Si5O18
Corundum
Formula: Al2O3
'Garnet Group'
Formula: X3Z2(SiO4)3
'Hornblende Root Name Group'
Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2
'Hypersthene'
Formula: (Mg,Fe)SiO3
Ilmenite
Formula: Fe2+TiO3
'K Feldspar'
Kyanite
Formula: Al2(SiO4)O
Magnetite
Formula: Fe2+Fe3+2O4
'Maskelynite'
'Monazite Group'
Formula: REE(PO4)
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
'Orthopyroxene Subgroup'
'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
Quartz
Formula: SiO2
Rutile
Formula: TiO2
Sillimanite
Formula: Al2(SiO4)O
Spinel
Formula: MgAl2O4
Staurolite
Formula: Fe2+2Al9Si4O23(OH)
Stishovite
Formula: SiO2
Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Spinel4.BB.05MgAl2O4
Corundum4.CB.05Al2O3
Ilmenite4.CB.05Fe2+TiO3
Quartz4.DA.05SiO2
Coesite4.DA.35SiO2
Stishovite4.DA.40SiO2
Rutile4.DB.05TiO2
Group 9 - Silicates
Zircon9.AD.30Zr(SiO4)
Sillimanite9.AF.05Al2(SiO4)O
Andalusite9.AF.10Al2(SiO4)O
Kyanite9.AF.15Al2(SiO4)O
Staurolite9.AF.30Fe2+2Al9Si4O23(OH)
Cordierite9.CJ.10Mg2Al4Si5O18
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
'Amphibole Supergroup'-AB2C5(T8O22)W2
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
'Hypersthene'-(Mg,Fe)SiO3
'Monazite Group'-REE(PO4)
'Maskelynite'-
'Hornblende Root Name Group'-◻Ca2(C2+4C3+)(AlSi7O22)W2
'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
'K Feldspar'-
'Garnet Group'-X3Z2(SiO4)3
'Orthopyroxene Subgroup'-
'Banded ironstone'-

List of minerals for each chemical element

HHydrogen
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H StauroliteFe22+Al9Si4O23(OH)
OOxygen
O Amphibole SupergroupAB2C5(T8O22)W2
O AndalusiteAl2(SiO4)O
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
O CoesiteSiO2
O CordieriteMg2Al4Si5O18
O CorundumAl2O3
O Hypersthene(Mg,Fe)SiO3
O IlmeniteFe2+TiO3
O KyaniteAl2(SiO4)O
O MagnetiteFe2+Fe23+O4
O Monazite GroupREE(PO4)
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O RutileTiO2
O SillimaniteAl2(SiO4)O
O SpinelMgAl2O4
O StauroliteFe22+Al9Si4O23(OH)
O StishoviteSiO2
O ZirconZr(SiO4)
O Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
O Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
O Garnet GroupX3Z2(SiO4)3
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
Na Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mg CordieriteMg2Al4Si5O18
Mg Hypersthene(Mg,Fe)SiO3
Mg SpinelMgAl2O4
AlAluminium
Al AndalusiteAl2(SiO4)O
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Al CordieriteMg2Al4Si5O18
Al CorundumAl2O3
Al KyaniteAl2(SiO4)O
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al SillimaniteAl2(SiO4)O
Al SpinelMgAl2O4
Al StauroliteFe22+Al9Si4O23(OH)
Al Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Al Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Si AndalusiteAl2(SiO4)O
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Si CoesiteSiO2
Si CordieriteMg2Al4Si5O18
Si Hypersthene(Mg,Fe)SiO3
Si KyaniteAl2(SiO4)O
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si SillimaniteAl2(SiO4)O
Si StauroliteFe22+Al9Si4O23(OH)
Si StishoviteSiO2
Si ZirconZr(SiO4)
Si Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Si Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Si Garnet GroupX3Z2(SiO4)3
PPhosphorus
P Monazite GroupREE(PO4)
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Ca Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
TiTitanium
Ti BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Ti IlmeniteFe2+TiO3
Ti RutileTiO2
FeIron
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fe Hypersthene(Mg,Fe)SiO3
Fe IlmeniteFe2+TiO3
Fe MagnetiteFe2+Fe23+O4
Fe StauroliteFe22+Al9Si4O23(OH)
ZrZirconium
Zr ZirconZr(SiO4)

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Vredefort_impact_structure
Wikidata ID:Q330095

Localities in this Region

  • Free State
    • Fezile Dabi District Municipality

Other Regions, Features and Areas that Intersect

AfricaContinent
Somali PlateTectonic Plate
South Africa

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