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Blackbush deposit, Mullaquana project, Whyalla, Eyre Peninsula, South Australia, Australiai
Regional Level Types
Blackbush depositDeposit
Mullaquana projectProject
Whyalla- not defined -
Eyre PeninsulaPeninsula
South AustraliaState
AustraliaCountry

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Latitude & Longitude (WGS84):
33° 11' 46'' South , 137° 24' 11'' East
Latitude & Longitude (decimal):
-33.19611,137.40306
GeoHash:
G#: r41ensvfe
GRN:
S23E82
Type:
Deposit
Age:
16.98 ± 0.16 Ma
Geologic Time:
Miocene
Dating method:
U–Pb dating of coffinite
Reference for age:
Domnick, U.; Cook, N.J.; Ciobanu, C.L.; Wade, B.P.; Courtney-Davies, L.; Bluck, R. A (2020) Mineralisation Age for the Sediment-Hosted Blackbush Uranium Prospect, North-Eastern Eyre Peninsula, South Australia. Minerals 10, 191.
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Whyalla19,645 (2013)23.6km
Iron Knob198 (2013)56.6km
Cowell882 (2012)70.1km
Mindat Locality ID:
233023
Long-form identifier:
mindat:1:2:233023:8
GUID (UUID V4):
83294cc9-891c-4195-b715-dd43a491aa15


The Blackbush uranium prospect was discovered in 2007 and contains ~12,580 tonnes U. It is located south of Whyalla in the Gawler Craton, northeast Eyre Peninsula, South Australia. Uranium is sediment-hosted hosted within Eocene sandstones of the Kanaka Beds and, subordinately, as veins within a massive saprolite derived from the subjacent Hiltaba-aged (~1585 Ma) granites (Dominick et al, 2020).

Uranium is mainly present as coffinite intergrown with framboidal Fe-sulphides, lignite, and quartz. Microprobe U–Pb dating of coffinite hosted in sedimentary units yielded a narrow age range, with a weighted average of 16.98 ± 0.16 Ma (343 individual analyses), strongly indicating a single coffinite-forming event at that time (op cit.).

Coffinite in subjacent saprolite generated a broader age range from 28 Ma to 20 Ma. Vein-hosted coffinite in the saprolite yielded similar ages (from 12 to 25 Ma), albeit with a greater range. Uraninite in the vein is distinctly older (42 to 38 Ma) (op cit.).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


11 valid minerals.

Rock Types Recorded

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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ 'Allanite Group'
Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ 'Chlorite Group'
ⓘ Coffinite
Formula: U(SiO4) · nH2O
ⓘ 'Feldspar Group'
ⓘ Hematite
Formula: Fe2O3
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
ⓘ 'K Feldspar'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ 'Monazite'
Formula: REE(PO4)
ⓘ Orthoclase
Formula: K(AlSi3O8)
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Thorite
Formula: Th(SiO4)
ⓘ Thorite var. Uranothorite
Formula: (Th,U)SiO4
ⓘ Uraninite
Formula: UO2
ⓘ 'Xenotime'
ⓘ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘUraninite4.DL.05UO2
Group 9 - Silicates
ⓘThorite
var. Uranothorite		9.AD.30(Th,U)SiO4
ⓘCoffinite9.AD.30U(SiO4) · nH2O
ⓘZircon9.AD.30Zr(SiO4)
ⓘThorite9.AD.30Th(SiO4)
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
ⓘOrthoclase9.FA.30K(AlSi3O8)
ⓘAlbite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Monazite'-REE(PO4)
ⓘ'Feldspar Group'-
ⓘ'Xenotime'-
ⓘ'Chlorite Group'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'K Feldspar'-
ⓘ'Allanite Group'-(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)

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ⓘ CoffiniteU(SiO4) · nH2O
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CoffiniteU(SiO4) · nH2O
Oⓘ HematiteFe2O3
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MonaziteREE(PO4)
Oⓘ OrthoclaseK(AlSi3O8)
Oⓘ QuartzSiO2
Oⓘ ThoriteTh(SiO4)
Oⓘ UraniniteUO2
Oⓘ ZirconZr(SiO4)
Oⓘ Thorite var. Uranothorite(Th,U)SiO4
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
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
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ OrthoclaseK(AlSi3O8)
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ CoffiniteU(SiO4) · nH2O
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ OrthoclaseK(AlSi3O8)
Siⓘ QuartzSiO2
Siⓘ ThoriteTh(SiO4)
Siⓘ ZirconZr(SiO4)
Siⓘ Thorite var. Uranothorite(Th,U)SiO4
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
PPhosphorus
Pⓘ MonaziteREE(PO4)
SSulfur
Sⓘ PyriteFeS2
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ OrthoclaseK(AlSi3O8)
CaCalcium
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
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ HematiteFe2O3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ PyriteFeS2
ZrZirconium
Zrⓘ ZirconZr(SiO4)
ThThorium
Thⓘ ThoriteTh(SiO4)
Thⓘ Thorite var. Uranothorite(Th,U)SiO4
UUranium
Uⓘ CoffiniteU(SiO4) · nH2O
Uⓘ UraniniteUO2
Uⓘ Thorite var. Uranothorite(Th,U)SiO4

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

www.uraniumsa.com.au (n.d.) http://www.uraniumsa.com.au/projects/mullaquana-overview.html
Domnick, U.; Cook, N.J.; Ciobanu, C.L.; Wade, B.P.; Courtney-Davies, L.; Bluck, R. A (2020) Mineralisation Age for the Sediment-Hosted Blackbush Uranium Prospect, North-Eastern Eyre Peninsula, South Australia. Minerals 10, 191.
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