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

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Key
Latitude & Longitude (WGS84):
28° 48' 41'' South , 122° 25' 18'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Laverton640 (2013)20.8km


Open-pit gold mine.

Discovered in 1979 by Ray Smith and named after his wife, Laurende, who had just become a grandmother. The mine has nothing to do with apples. Production began at Granny Smith in 1989 by Delta Gold Limited, who became Auriongold Ltd in 2002, and was taken over by Placer Dome Inc in 2003, who was taken over by Barrick Gold in 2006. In 2013 the mine was sold to South African based Goldfields ltd.

The mine is 25 kilometres south of Laverton. It is now abandoned but still contains the processing plant for other nearby deposits which includes Goanna 500m north, Windich 800m south, Wallaby and its southern extension Just-in-Case 11 kms west, Sunrise Dam 30kms south, Jubilee 20 kms south, Keringal 15 kms south, Phoenix 2 kms north-west and Childe Harold 4 kms north-west (approximate from the Granny Smith processing plant). The mine manager from 2010 to at least 2013 is Julie Shuttleworth.

Granny Smith lies in the Laverton Tectonic Zone of major north-south shears and associated faults. Goanna, Granny Smith and Windich are on the same lode continuous for 3500 metres, but only economic at the three sites. The Granny Smith portion strikes at 1500 metres, with the ore zone 600 x 250 x 30 metres, dipping east at 25 degrees.

The upper regolith contains initially topsoil of gravel colluvium of banded iron formations, quartz and ferruginous nodules. Next is the hardpan of cemented red-brown colluvium and clays. Then saprolite being weathered bedrock in red-brown clays, with red-orange ochre, with veins and seggregations of calcite. The inclusion of carbonate in the saprolite is unusual. A granitoid intrusion outcrops west of Granny Smith and underlies much of the metasediments. Mafic metavolcanic rocks are to the west and metasedimentary and felsic metavolcanic rocks to the east. Gold occurs at Granny Smith in the epiclastic sediments.

Gold is rarely visible, and depleted in the upper 20 metres of the zone. It is found in greatest concentrations where the shear contacts the overlying sediments, and a composite diorite-granitoid intrusive. Gold is present as discrete interstitial grains, blebs and clusters in quartz and minor ankerite filled micro fractures. There is a close relationship between the gold and the quartz-diorite body, and is intimately associated with the calcite. Gold is most abundant in the hardpan, and shows no supergene enrichment.

Regions containing this locality

Australian Plate (Australia Plate)Tectonic Plate
West Australian Element, Western Australia, AustraliaCraton
Yilgarn Craton, Western Australia, AustraliaCraton

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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


Mineral List


22 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:

Albite
Formula: Na(AlSi3O8)
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.; Pasi Eilu (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003 Rovaniemi, Finland December 2003
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.
Arsenopyrite
Formula: FeAsS
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.; Pasi Eilu (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003 Rovaniemi, Finland December 2003
Calcite
Formula: CaCO3
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.; Pasi Eilu (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003 Rovaniemi, Finland December 2003
Chalcopyrite
Formula: CuFeS2
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.
'Chlorite Group'
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.; Pasi Eilu (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003 Rovaniemi, Finland December 2003
Dolomite
Formula: CaMg(CO3)2
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.; Pasi Eilu (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003 Rovaniemi, Finland December 2003
Galena
Formula: PbS
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.
Gold
Formula: Au
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.; Coggon, J. H., Massey, S. G., & Amann, W. J. (1994). Magnetic and electrical signatures of the Granny Smith gold deposits, Western Australia. Exploration Geophysics, 25(3), 169-169.
Graphite
Formula: C
Reference: Pasi Eilu (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003 Rovaniemi, Finland December 2003
Hematite
Formula: Fe2O3
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.
Ilmenite
Formula: Fe2+TiO3
Reference: Pasi Eilu (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003 Rovaniemi, Finland December 2003
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Coggon, J. H., Massey, S. G., & Amann, W. J. (1994). Magnetic and electrical signatures of the Granny Smith gold deposits, Western Australia. Exploration Geophysics, 25(3), 169-169.
Microcline
Formula: K(AlSi3O8)
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.
Molybdenite
Formula: MoS2
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.
'Monazite'
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.; Pasi Eilu (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003 Rovaniemi, Finland December 2003
Pyrite
Formula: FeS2
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.; Pasi Eilu (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003 Rovaniemi, Finland December 2003; Coggon, J. H., Massey, S. G., & Amann, W. J. (1994). Magnetic and electrical signatures of the Granny Smith gold deposits, Western Australia. Exploration Geophysics, 25(3), 169-169.
Pyrrhotite
Formula: Fe7S8
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.; Pasi Eilu (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003 Rovaniemi, Finland December 2003
Quartz
Formula: SiO2
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.; Pasi Eilu (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003 Rovaniemi, Finland December 2003
Rutile
Formula: TiO2
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.; Pasi Eilu (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003 Rovaniemi, Finland December 2003
Scheelite
Formula: Ca(WO4)
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.
Sphalerite
Formula: ZnS
Reference: Duuring, P., Hagemann, S.G., and Groves, D.I. (2000): Mineralium Deposita 35, 402-421.
Xenotime-(Y)
Formula: Y(PO4)
Reference: Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Mineralium Deposita 43, 337-362.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Graphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
Arsenopyrite2.EB.20FeAsS
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Sphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Ilmenite4.CB.05Fe2+TiO3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Scheelite7.GA.05Ca(WO4)
Group 8 - Phosphates, Arsenates and Vanadates
Xenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Chlorite Group'-
'Monazite'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Semi-metals and non-metals
Graphite1.3.6.2C
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Chlorite Group'-
'Monazite'-
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
Xenotime-(Y)-Y(PO4)

List of minerals for each chemical element

HHydrogen
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
C CalciteCaCO3
C AnkeriteCa(Fe2+,Mg)(CO3)2
C DolomiteCaMg(CO3)2
C GraphiteC
OOxygen
O QuartzSiO2
O AlbiteNa(AlSi3O8)
O CalciteCaCO3
O AnkeriteCa(Fe2+,Mg)(CO3)2
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O ScheeliteCa(WO4)
O MicroclineK(AlSi3O8)
O DolomiteCaMg(CO3)2
O HematiteFe2O3
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O MuscoviteKAl2(AlSi3O10)(OH)2
O RutileTiO2
O Xenotime-(Y)Y(PO4)
O IlmeniteFe2+TiO3
O MagnetiteFe2+Fe23+O4
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
NaSodium
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg DolomiteCaMg(CO3)2
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
AlAluminium
Al AlbiteNa(AlSi3O8)
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MicroclineK(AlSi3O8)
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si QuartzSiO2
Si AlbiteNa(AlSi3O8)
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si MicroclineK(AlSi3O8)
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
PPhosphorus
P Xenotime-(Y)Y(PO4)
SSulfur
S PyrrhotiteFe7S8
S MolybdeniteMoS2
S PyriteFeS2
S ArsenopyriteFeAsS
S ChalcopyriteCuFeS2
S GalenaPbS
S SphaleriteZnS
KPotassium
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MicroclineK(AlSi3O8)
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca ScheeliteCa(WO4)
Ca DolomiteCaMg(CO3)2
TiTitanium
Ti RutileTiO2
Ti IlmeniteFe2+TiO3
FeIron
Fe PyrrhotiteFe7S8
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe PyriteFeS2
Fe HematiteFe2O3
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe IlmeniteFe2+TiO3
Fe MagnetiteFe2+Fe23+O4
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
YYttrium
Y Xenotime-(Y)Y(PO4)
MoMolybdenum
Mo MolybdeniteMoS2
WTungsten
W ScheeliteCa(WO4)
AuGold
Au GoldAu
PbLead
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Coggon, J. H., Massey, S. G., & Amann, W. J. (1994). Magnetic and electrical signatures of the Granny Smith gold deposits, Western Australia. Exploration Geophysics, 25(3), 169-169.
Duuring, P., Hagemann, S.G., and Groves, D.I. (2000): Structural Setting, Hydrothermal Alteration, and Gold Mineralisation at the Archaean Syenite-hosted Jupiter Deposit, Yilgarn Craton, Western Australia. Mineralium Deposita (2000): 35: 402-421
Mueller, A.G., Hall, G.C., Nemchin, A.A., Stein, H.J., Creaser, R.A., and Mason, D.R. (2008): Archean High-Mg Monzodiorite–syenite, Epidote Skarn, and Biotite–sericite Gold Lodes in the Granny Smith–Wallaby District, Australia- U–Pb and Re–Os chronometry of two intrusion-related hydrothermal systems. Mineralium Deposita (2008):43: 337-362.
Gray, D.J., Lintern, M.J., Butt, C.R.M.(2005): Granny Smith Gold Deposits Western Australia, CRC LEME (2005)
Barrick Gold (2013): Granny Smith Mine, Business Excellence
(23 Jan 2013)

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