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Johannsen's Shaft (Southern Ophir Prospect), Pinnacles Bore Copper Area, Strangways Range, Central Desert Region, Northern Territory, Australiai
Regional Level Types
Johannsen's Shaft (Southern Ophir Prospect)Group of Shafts
Pinnacles Bore Copper AreaArea
Strangways RangeMountain Range
Central Desert RegionRegion
Northern TerritoryTerritory
AustraliaCountry

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Latitude & Longitude (WGS84):
23° 8' 51'' South , 134° 14' 13'' East
Latitude & Longitude (decimal):
-23.14767,134.23722
GeoHash:
G#: qgzkqdhe1
GRN:
S16E88
Type:
Group of Shafts
Köppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
294743
Long-form identifier:
mindat:1:2:294743:6
GUID (UUID V4):
0


Located between the Centralian 2, and Centralian 9 mines, 500 metres north and south respectively. The shaft is on the south side of a small spur. No outcrop. Marble with fractures filled with quartz-siderite, with quartz veins containing chalcocite, malachite, minor calcite, trace azurite. Quartz stringers and quartz filled joints extend south-west, west and north-west of the shaft. Said to have collectable phlogopite and magnetite crystals with fragments of olivine, clinohumite and sulphide minerals.

In 1952, Kurt Johannsen sank an inclined shaft, while J. Vitosky extended the shaft in 1968, and joined it to an adit to the north. He also dug costeans 3 and 9 metres long, with McMahon drilling the deposit the same year. High copper values were found to extend only a short distance.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


9 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:

ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
ⓘ Calcite
Formula: CaCO3
ⓘ Chalcocite
Formula: Cu2S
ⓘ Clinohumite
Formula: Mg9(SiO4)4F2
ⓘ 'Fayalite-Forsterite Series'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ Quartz
Formula: SiO2
ⓘ Siderite
Formula: FeCO3

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘChalcocite2.BA.05Cu2S
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘSiderite5.AB.05FeCO3
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
ⓘClinohumite9.AF.55Mg9(SiO4)4F2
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Unclassified
ⓘ'Fayalite-Forsterite Series'-

List of minerals for each chemical element

HHydrogen
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ CalciteCaCO3
Cⓘ MalachiteCu2(CO3)(OH)2
Cⓘ SideriteFeCO3
OOxygen
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ CalciteCaCO3
Oⓘ ClinohumiteMg9(SiO4)4F2
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ SideriteFeCO3
Oⓘ Fayalite-Forsterite Series
FFluorine
Fⓘ ClinohumiteMg9(SiO4)4F2
MgMagnesium
Mgⓘ ClinohumiteMg9(SiO4)4F2
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ Fayalite-Forsterite Series
AlAluminium
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
Siⓘ ClinohumiteMg9(SiO4)4F2
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ Fayalite-Forsterite Series
SSulfur
Sⓘ ChalcociteCu2S
KPotassium
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ CalciteCaCO3
FeIron
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ SideriteFeCO3
Feⓘ Fayalite-Forsterite Series
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ ChalcociteCu2S
Cuⓘ MalachiteCu2(CO3)(OH)2

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

Shaw, R.D. (1970) Geology and copper deposits of the Pinnacles Bore Area, Strangways Range, Northern Territory. Department of National Development, Bureau of Mineral Resources, Geology and Geophysics, Record 1970/115.
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