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Otter Juan Mine, Juan complex, Kambalda Nickel mines, Kambalda, Coolgardie Shire, Western Australia, Australiai
Regional Level Types
Otter Juan MineMine
Juan complexComplex
Kambalda Nickel minesGroup of Mines
KambaldaTown
Coolgardie ShireShire
Western AustraliaState
AustraliaCountry

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Latitude & Longitude (WGS84):
31° 10' 3'' South , 121° 39' 13'' East
Latitude & Longitude (decimal):
-31.16767,121.65363
GeoHash:
G#: qdqw8q17n
GRN:
S21E75
Type:
Mine
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Stoneville2,841 (2016)35.1km
Boulder5,178 (2017)45.6km
Williamstown161 (2018)49.2km
Kalgoorlie31,107 (2014)49.9km
Coolgardie802 (2016)52.4km
Mindat Locality ID:
146968
Long-form identifier:
mindat:1:2:146968:7
GUID (UUID V4):
d76cbffb-609c-48d7-911b-802c8bf1f4ae


A nickel mine located a few km NNE of Kambalda. Discovered 1965-1966. Otter shoot is southwest of the Juan complex shoots which include Juan West(A,B), Durkin Deeps, Juan Banana, B, Main, Top Roll, Juan Horst, Juan West, possibly others since the source was written.

Ore is obtained from the Juan decline, and Juan shaft. It is noted in the mid 1980's, as containing one-quarter of the nickel ore in the Kambalda area, and one-third volume of ore production.

Meta olivine peridotite 50-150 metre thick basal flow. Upper areas however appear somewhat chaotic according to the source. Mineralised areas contain meta olivine, peridotite, granular textured talc-magnesite, chlorite, dolomite. There are prominent carbonate porphyroblasts in the lowest 5 metres, and disseminated ore. Footwall is fine grained dark grey-green metabasalt, traversed by quartz veinlets.

There are metasomatic reaction zones containing abundant chlorite, biotite, phlogopite, and tremolite, between the metabasalt and felsic porphyry intrusions.

The Juan Fault separates the ore into a north deposit, dipping east, and west deposit, dipping west. It is further broken by folding reverse high angle faulting, and strike to oblique slip movement. West of the Juan fault, the sub-shoots are bounded by north trending reverse faults, and north-west flexural folding. To the east is a complex north north-west plunging structure.



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


13 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:

ⓘ Antigorite
Formula: Mg3(Si2O5)(OH)4
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ 'Fayalite-Forsterite Series'
ⓘ Magnesite
Formula: MgCO3
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Pentlandite
Formula: (NixFey)Σ9S8
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Talc
Formula: Mg3Si4O10(OH)2
ⓘ Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPentlandite2.BB.15(NixFey)Σ9S8
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘMagnesite5.AB.05MgCO3
ⓘDolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
ⓘTremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
ⓘTalc9.EC.05Mg3Si4O10(OH)2
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘClinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
ⓘAntigorite9.ED.15Mg3(Si2O5)(OH)4
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chlorite Group'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ AntigoriteMg3(Si2O5)(OH)4
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
Cⓘ DolomiteCaMg(CO3)2
Cⓘ MagnesiteMgCO3
OOxygen
Oⓘ AntigoriteMg3(Si2O5)(OH)4
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Oⓘ DolomiteCaMg(CO3)2
Oⓘ MagnesiteMgCO3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgMagnesium
Mgⓘ AntigoriteMg3(Si2O5)(OH)4
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ MagnesiteMgCO3
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ TalcMg3Si4O10(OH)2
Mgⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
Siⓘ AntigoriteMg3(Si2O5)(OH)4
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ Pentlandite(NixFey)Σ9S8
Sⓘ PyriteFeS2
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ DolomiteCaMg(CO3)2
Caⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ ChalcopyriteCuFeS2
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Pentlandite(NixFey)Σ9S8
Feⓘ PyriteFeS2
NiNickel
Niⓘ Pentlandite(NixFey)Σ9S8
CuCopper
Cuⓘ ChalcopyriteCuFeS2

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

Marston, R. J., Kay, B. D. (1980) The Distribution, Petrology, and Genesis of Nickel Ores at the Juan Complex, Kambalda, Western Australia, Economic Geology (1980): Vol. 75, No.4, pp.546-565.
Marston, R. J. (1984) Nickel mineralization in Western Australia. Mineral Resources Bulletin 14. Geological Survey of Western Australia
www.mincor.com.au (2006) http://www.mincor.com.au/kambalda_nickel_operations/overview.phtml
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