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Cummins Range complex (Minneroo Pool), Mount Dockrell pegmatites (Mount Dockerell), Lamboo Station, Halls Creek Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 19° 13' 46'' South , 127° 7' 41'' East
Latitude & Longitude (decimal): -19.22966,127.12830
GeoHash:G#: qud6sgk50
Locality type:Complex
Köppen climate type:BSh : Hot semi-arid (steppe) climate


Carbonatite complex, pegmatite-like.

Rare earth oxides are the subject of this exploration. Presently (2013), China holds 95% of world supply, which has led to a worldwide scramble to find alternative supplies in case China ever restricts export of the material.

Cummins Range is 130 kilometres south west of Halls Creek in the Kimberley, and on the northern edge of the Great Sandy Desert. It is very remote desert country, with no access roads or human habitation nearby. The geologists made a note they had to cope with a plague of camels.

The Cummins Range Complex is the name for a small, 1.5km by 1.2km, alkaline intrusive complex, described as a vertical pipe-like pegmatite body. It intrudes the Olympio Formation of sediments and granite, aged 1.8Ma.

The outer zone is unaltered pyroxenite with diopside, biotite, magnetite, apatite, and carbonate, with minor baddeleyite, sphene, ilmenite, monazite, zircon, zirconolite, pyrrhotite, pyrite, and chalcopyrite.

The next zone is mica rich pale green pyroxenite, with coarse biotite-phlogopite, magnetite, carbonate, and amphibole, with minor minerals as mentioned previously as accessory minerals for the outer zone, and in addition, pyrochlore, barite, bastnäsite, aeschynite, and thorianite.

The central core is a carbonatite zone 500m x 400m of dolomite, some calcite and magnesite, and minor amphibole, biotite, magnetite, chlorite, apatite, zircon, monazite, bastnasite, aeschynite, fluorite, pyrochlore, allanite, pyrite, and pyrrhotite.

Apatite occurs as grains less than 7mm and monazite less than 2mm. Oxidation, leaching and dissolution of the carbonates has resulted in the formation of these rare earth oxides, niobium and uranium minerals.

The site has a very interesting geology, and theoretically could produce just as interesting specimens. In reality, only drill holes have happened so far, is on an active lease, and regardless would require a major expedition to retrieve them into harsh desert country with no civilisation for hundreds of kilometres.

The Mindat co-ordinates are approximate, and only mark the Cummins Range itself.


Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


18 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and 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:

'Aeschynite'
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Amphibolite'
Reference: Jacobson, M., Calderwood, M., Grguric, B.(2007): Pegmatites of Western Australia (2007)
'Apatite'
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Baddeleyite
Formula: ZrO2
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Baryte
Formula: BaSO4
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Bastnäsite'
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Biotite'
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Calcite
Formula: CaCO3
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Chalcopyrite
Formula: CuFeS2
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Chlorite Group'
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Clinopyroxenite'
Reference: Downes, P. J., Dunkley, D. J., Fletcher, I. R., McNaughton, N. J., Rasmussen, B., Jaques, A. L., ... & Sweetapple, M. T. (2016). Zirconolite, zircon and monazite-(Ce) U-Th-Pb age constraints on the emplacement, deformation and alteration history of the Cummins Range Carbonatite Complex, Halls Creek Orogen, Kimberley region, Western Australia. Mineralogy and Petrology, 110(2-3), 199-222.
'Columbite-(Fe)-Columbite-(Mn) Series'
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Diopside
Formula: CaMgSi2O6
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Dolomite
Formula: CaMg(CO3)2
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139; Downes, P. J., Dunkley, D. J., Fletcher, I. R., McNaughton, N. J., Rasmussen, B., Jaques, A. L., ... & Sweetapple, M. T. (2016). Zirconolite, zircon and monazite-(Ce) U-Th-Pb age constraints on the emplacement, deformation and alteration history of the Cummins Range Carbonatite Complex, Halls Creek Orogen, Kimberley region, Western Australia. Mineralogy and Petrology, 110(2-3), 199-222.
'Dolomite-carbonatite'
Reference: Downes, P. J., Dunkley, D. J., Fletcher, I. R., McNaughton, N. J., Rasmussen, B., Jaques, A. L., ... & Sweetapple, M. T. (2016). Zirconolite, zircon and monazite-(Ce) U-Th-Pb age constraints on the emplacement, deformation and alteration history of the Cummins Range Carbonatite Complex, Halls Creek Orogen, Kimberley region, Western Australia. Mineralogy and Petrology, 110(2-3), 199-222.
Fluorite
Formula: CaF2
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Granite'
Reference: Jacobson, M., Calderwood, M., Grguric, B.(2007): Pegmatites of Western Australia (2007)
Ilmenite
Formula: Fe2+TiO3
Reference: Jacobson, M., Calderwood, M., Grguric, B.(2007): Pegmatites of Western Australia (2007)
Magnesite
Formula: MgCO3
Reference: Jacobson, M., Calderwood, M., Grguric, B.(2007): Pegmatites of Western Australia (2007)
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Monazite'
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Monazite-(Ce)
Formula: Ce(PO4)
Reference: Downes, P. J., Dunkley, D. J., Fletcher, I. R., McNaughton, N. J., Rasmussen, B., Jaques, A. L., ... & Sweetapple, M. T. (2016). Zirconolite, zircon and monazite-(Ce) U-Th-Pb age constraints on the emplacement, deformation and alteration history of the Cummins Range Carbonatite Complex, Halls Creek Orogen, Kimberley region, Western Australia. Mineralogy and Petrology, 110(2-3), 199-222.
'Parisite'
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Pegmatite'
Reference: Jacobson, M., Calderwood, M., Grguric, B.(2007): Pegmatites of Western Australia (2007)
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Pyrite
Formula: FeS2
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Pyrochlore'
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
'Pyroxenite'
Reference: Jacobson, M., Calderwood, M., Grguric, B.(2007): Pegmatites of Western Australia (2007)
Pyrrhotite
Formula: Fe7S8
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Thorianite
Formula: ThO2
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Titanite
Formula: CaTi(SiO4)O
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Zircon
Formula: Zr(SiO4)
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139; Downes, P. J., Dunkley, D. J., Fletcher, I. R., McNaughton, N. J., Rasmussen, B., Jaques, A. L., ... & Sweetapple, M. T. (2016). Zirconolite, zircon and monazite-(Ce) U-Th-Pb age constraints on the emplacement, deformation and alteration history of the Cummins Range Carbonatite Complex, Halls Creek Orogen, Kimberley region, Western Australia. Mineralogy and Petrology, 110(2-3), 199-222.
Zirconolite
Formula: CaZrTi2O7
Reference: Jacobson, M., Calderwood, M., Grguric, B.(2007): Pegmatites of Western Australia (2007); Downes, P. J., Dunkley, D. J., Fletcher, I. R., McNaughton, N. J., Rasmussen, B., Jaques, A. L., ... & Sweetapple, M. T. (2016). Zirconolite, zircon and monazite-(Ce) U-Th-Pb age constraints on the emplacement, deformation and alteration history of the Cummins Range Carbonatite Complex, Halls Creek Orogen, Kimberley region, Western Australia. Mineralogy and Petrology, 110(2-3), 199-222.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Chalcopyrite'2.CB.10aCuFeS2
'Pyrite'2.EB.05aFeS2
'Pyrrhotite'2.CC.10Fe7S8
Group 3 - Halides
'Fluorite'3.AB.25CaF2
Group 4 - Oxides and Hydroxides
'Baddeleyite'4.DE.35ZrO2
'Ilmenite'4.CB.05Fe2+TiO3
'Magnetite'4.BB.05Fe2+Fe3+2O4
'Thorianite'4.DL.05ThO2
'Zirconolite'4.DH.30CaZrTi2O7
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
'Dolomite'5.AB.10CaMg(CO3)2
'Magnesite'5.AB.05MgCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Baryte'7.AD.35BaSO4
Group 8 - Phosphates, Arsenates and Vanadates
'Monazite-(Ce)'8.AD.50Ce(PO4)
Group 9 - Silicates
'Diopside'9.DA.15CaMgSi2O6
'Phlogopite'9.EC.20KMg3(AlSi3O10)(OH)2
'Titanite'9.AG.15CaTi(SiO4)O
'Zircon'9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Aeschynite'-
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Amphibolite'-
'Apatite'-
'Bastnäsite'-
'Biotite'-
'Chlorite Group'-
'Clinopyroxenite'-
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Dolomite-carbonatite'-
'Granite'-
'Monazite'-
'Parisite'-
'Pegmatite'-
'Pyrochlore'-
'Pyroxenite'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Baddeleyite4.4.14.1ZrO2
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Thorianite5.1.1.2ThO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
A2B2O6(O,OH,F)
Zirconolite8.2.5.5CaZrTi2O7
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Magnesite14.1.1.2MgCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Aeschynite'-
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Amphibolite'-
'Apatite'-
'Bastnäsite'-
'Biotite'-
'Chlorite Group'-
'Clinopyroxenite'-
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Dolomite-carbonatite'-
'Granite'-
'Monazite'-
'Parisite'-
'Pegmatite'-
'Pyrochlore'-
'Pyroxenite'-

List of minerals for each chemical element

HHydrogen
H Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
H PhlogopiteKMg3(AlSi3O10)(OH)2
CCarbon
C CalciteCaCO3
C DolomiteCaMg(CO3)2
C MagnesiteMgCO3
OOxygen
O Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
O BaddeleyiteZrO2
O BaryteBaSO4
O CalciteCaCO3
O DiopsideCaMgSi2O6
O DolomiteCaMg(CO3)2
O IlmeniteFe2+TiO3
O MagnesiteMgCO3
O MagnetiteFe2+Fe23+O4
O Monazite-(Ce)Ce(PO4)
O PhlogopiteKMg3(AlSi3O10)(OH)2
O ThorianiteThO2
O TitaniteCaTi(SiO4)O
O ZirconZr(SiO4)
O ZirconoliteCaZrTi2O7
FFluorine
F FluoriteCaF2
MgMagnesium
Mg DiopsideCaMgSi2O6
Mg DolomiteCaMg(CO3)2
Mg MagnesiteMgCO3
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
AlAluminium
Al PhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
Si Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
Si DiopsideCaMgSi2O6
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si TitaniteCaTi(SiO4)O
Si ZirconZr(SiO4)
PPhosphorus
P Monazite-(Ce)Ce(PO4)
SSulfur
S BaryteBaSO4
S ChalcopyriteCuFeS2
S PyriteFeS2
S PyrrhotiteFe7S8
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca DolomiteCaMg(CO3)2
Ca FluoriteCaF2
Ca TitaniteCaTi(SiO4)O
Ca ZirconoliteCaZrTi2O7
TiTitanium
Ti IlmeniteFe2+TiO3
Ti TitaniteCaTi(SiO4)O
Ti ZirconoliteCaZrTi2O7
FeIron
Fe ChalcopyriteCuFeS2
Fe IlmeniteFe2+TiO3
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
CuCopper
Cu ChalcopyriteCuFeS2
ZrZirconium
Zr BaddeleyiteZrO2
Zr ZirconZr(SiO4)
Zr ZirconoliteCaZrTi2O7
BaBarium
Ba BaryteBaSO4
CeCerium
Ce Monazite-(Ce)Ce(PO4)
ThThorium
Th ThorianiteThO2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Berger, V.I., Singer, D.A., and Orris, G.J. (2009): Carbonatites of the World. Explored Deposits of Nb and REE - Database and Grade and Tonnage Models. USGS Open-File Report (2009):09: 1139.
Jacobson, M., Calderwood, M., Grguric, B.(2007): Pegmatites of Western Australia (2007)
Downes, P. J., Dunkley, D. J., Fletcher, I. R., McNaughton, N. J., Rasmussen, B., Jaques, A. L., ... & Sweetapple, M. T. (2016). Zirconolite, zircon and monazite-(Ce) U-Th-Pb age constraints on the emplacement, deformation and alteration history of the Cummins Range Carbonatite Complex, Halls Creek Orogen, Kimberley region, Western Australia. Mineralogy and Petrology, 110(2-3), 199-222.

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