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Mount Weld Mine, Mount Weld Station, Laverton Shire, Western Australia, Australiai
Regional Level Types
Mount Weld MineMine
Mount Weld StationMountain
Laverton ShireShire
Western AustraliaState
AustraliaCountry

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Key
Lock Map
Latitude & Longitude (WGS84): 28° 51' 36'' South , 122° 32' 52'' East
Latitude & Longitude (decimal): -28.86000,122.54778
GeoHash:G#: qdz5udhw6
Locality type:Mine
Köppen climate type:BWh : Hot deserts climate
Nearest Settlements:
PlacePopulationDistance
Laverton640 (2013)29.8km


Carbonatitic REE deposit with additional Nb, Ta, Zr, Ti contents ('Crown deposit' - apparently a separate part of the carbonatite).
Discovered in 1988; owned by Lynas Corp.

Located about 30 km south of Laverton and 120 km east of Leonora.

Rare earths are contained in secondary phosphates and aluminophosphates, presumably derived from weathering of the Proterozoic Mount Weld carbonatite, an intrusive pipe approximately three kilometers in diameter.


One of the references describes churchite as a fragile secondary mineral of microcrystalline acicular radiating crystals. It is found as void filling in crandallite group minerals, and as encrustations on limonite aggregates, weathered magnetite, on crandallite group grains, and sometimes as fine grained intergrowths with limonite

Regions containing this locality

Australian PlatePlate
West Australian Element, Western Australia, AustraliaCraton
Yilgarn Craton, Western Australia, AustraliaCraton

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals. 1 erroneous literature entry.

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:

'Apatite'
Cavoite
Formula: CaV4+3O7
Cerianite-(Ce)
Formula: (Ce4+,Th)O2
Churchite-(Y)
Formula: Y(PO4) · 2H2O
Crandallite
Formula: CaAl3(PO4)(PO3OH)(OH)6
'Florencite'
Gorceixite
Formula: BaAl3(PO4)(PO3OH)(OH)6
Goyazite
Formula: SrAl3(PO4)(PO3OH)(OH)6
'Limonite'
Formula: (Fe,O,OH,H2O)
Magnetite
Formula: Fe2+Fe3+2O4
Monazite-(La)
Formula: La(PO4)
'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
'Rhabdophane'
'Smectite Group'
Formula: A0.3D2-3[T4O10]Z2 · nH2O
Vermiculite
Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Cavoite ?4.HE.40CaV4+3O7
Cerianite-(Ce)4.DL.05(Ce4+,Th)O2
Magnetite4.BB.05Fe2+Fe3+2O4
'Pyrochlore Group'4.00.A2Nb2(O,OH)6Z
Group 8 - Phosphates, Arsenates and Vanadates
Churchite-(Y)8.CJ.50Y(PO4) · 2H2O
Crandallite8.BL.10CaAl3(PO4)(PO3OH)(OH)6
Gorceixite8.BL.10BaAl3(PO4)(PO3OH)(OH)6
Goyazite8.BL.10SrAl3(PO4)(PO3OH)(OH)6
Monazite-(La)8.AD.50La(PO4)
Group 9 - Silicates
Vermiculite9.EC.50Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Florencite'-
'Limonite'-(Fe,O,OH,H2O)
'Rhabdophane'-
'Smectite Group'-A0.3D2-3[T4O10]Z2 · nH2O

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Cerianite-(Ce)4.4.12.1(Ce4+,Th)O2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
A2B2O6(O,OH,F)
'Pyrochlore Group'8.2.1.1A2Nb2(O,OH)6Z
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(La)38.4.3.2La(PO4)
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
(AB)5(XO4)2·xH2O
Churchite-(Y)40.4.6.1Y(PO4) · 2H2O
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq·xH2O
Crandallite42.7.3.1CaAl3(PO4)(PO3OH)(OH)6
Gorceixite42.7.3.2BaAl3(PO4)(PO3OH)(OH)6
Goyazite42.7.3.3SrAl3(PO4)(PO3OH)(OH)6
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Vermiculite71.2.2d.3Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Unclassified Minerals, Mixtures, etc.
'Apatite'-
Cavoite ?-CaV4+3O7
'Florencite'-
'Limonite'-(Fe,O,OH,H2O)
'Rhabdophane'-
'Smectite Group'-A0.3D2-3[T4O10]Z2 · nH2O

List of minerals for each chemical element

HHydrogen
H Churchite-(Y)Y(PO4) · 2H2O
H Pyrochlore GroupA2Nb2(O,OH)6Z
H GoyaziteSrAl3(PO4)(PO3OH)(OH)6
H GorceixiteBaAl3(PO4)(PO3OH)(OH)6
H CrandalliteCaAl3(PO4)(PO3OH)(OH)6
H Limonite(Fe,O,OH,H2O)
H Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
H VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
OOxygen
O Monazite-(La)La(PO4)
O Churchite-(Y)Y(PO4) · 2H2O
O Cerianite-(Ce)(Ce4+,Th)O2
O Pyrochlore GroupA2Nb2(O,OH)6Z
O GoyaziteSrAl3(PO4)(PO3OH)(OH)6
O GorceixiteBaAl3(PO4)(PO3OH)(OH)6
O CrandalliteCaAl3(PO4)(PO3OH)(OH)6
O Limonite(Fe,O,OH,H2O)
O Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
O MagnetiteFe2+Fe23+O4
O VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
O CavoiteCaV34+O7
MgMagnesium
Mg VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
AlAluminium
Al GoyaziteSrAl3(PO4)(PO3OH)(OH)6
Al GorceixiteBaAl3(PO4)(PO3OH)(OH)6
Al CrandalliteCaAl3(PO4)(PO3OH)(OH)6
Al VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
SiSilicon
Si VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
PPhosphorus
P Monazite-(La)La(PO4)
P Churchite-(Y)Y(PO4) · 2H2O
P GoyaziteSrAl3(PO4)(PO3OH)(OH)6
P GorceixiteBaAl3(PO4)(PO3OH)(OH)6
P CrandalliteCaAl3(PO4)(PO3OH)(OH)6
CaCalcium
Ca CrandalliteCaAl3(PO4)(PO3OH)(OH)6
Ca CavoiteCaV34+O7
VVanadium
V CavoiteCaV34+O7
FeIron
Fe Limonite(Fe,O,OH,H2O)
Fe MagnetiteFe2+Fe23+O4
Fe VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
SrStrontium
Sr GoyaziteSrAl3(PO4)(PO3OH)(OH)6
YYttrium
Y Churchite-(Y)Y(PO4) · 2H2O
NbNiobium
Nb Pyrochlore GroupA2Nb2(O,OH)6Z
BaBarium
Ba GorceixiteBaAl3(PO4)(PO3OH)(OH)6
LaLanthanum
La Monazite-(La)La(PO4)
CeCerium
Ce Cerianite-(Ce)(Ce4+,Th)O2
ThThorium
Th Cerianite-(Ce)(Ce4+,Th)O2

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Quaternary
0 - 2.588 Ma



ID: 704381
colluvium 38491

Age: Pleistocene (0 - 2.588 Ma)

Description: Colluvium and/or residual deposits, sheetwash, talus, scree; boulder, gravel, sand; may include minor alluvial or sand plain deposits, local calcrete and reworked laterite

Comments: regolith; synthesis of multiple published descriptions

Lithology: Regolith

Reference: Raymond, O.L., Liu, S., Gallagher, R., Zhang, W., Highet, L.M. Surface Geology of Australia 1:1 million scale dataset 2012 edition. Commonwealth of Australia (Geoscience Australia). [5]

Neoarchean - Mesoarchean
2500 - 3200 Ma



ID: 3187518
Archean volcanic rocks

Age: Archean (2500 - 3200 Ma)

Comments: Yilgarn Craton

Lithology: Greenstone belt; mafic-ultramafic volcanic rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Lottermoser, B. G.; England, B. M. (1988): Compositional Variation in Pyrochlores from the Mt. Weld Carbonatite Laterite, Western Australia. Mineralogy and Petrology (1988): 38: 37-51. [Na-Ca-pyrochlore, strontian pyrochlore, strontiopyrochlore, ceriopyrochlore, cerian strontiopyrochlore, and strontian ceriopyrochlore]
Lottermoser, B. (1990): Rare-earth Element Mineralisation Within the Mt. Weld Carbonatite Laterite, Western Australia. Lithos (1990):24: 151–167.
Lottermoser, B.(1987):Churchite from the Mt Weld Carbonatite Laterite Western Australia, Mineralogical Magazine(1987):51: 468-469

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