Millar's Workings (Millers Workings), Barrow Creek Pegmatite Field, Barrow Creek, Barkly Region, Northern Territory, Australiai
Regional Level Types | |
---|---|
Millar's Workings (Millers Workings) | Workings |
Barrow Creek Pegmatite Field | Pegmatite Field |
Barrow Creek | Creek |
Barkly Region | Region |
Northern Territory | Territory |
Australia | Country |
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Latitude & Longitude (WGS84):
21° 21' 39'' South , 133° 58' 14'' East
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Mindat Locality ID:
294355
Long-form identifier:
mindat:1:2:294355:1
GUID (UUID V4):
f305ce01-3ea0-4586-8fac-e274bccdf143
In 1978, Albert Millar discovered tantalite at this location, and several small parcels were processed at a plant he erected at the Salt Lake City Bore, 6 kilometres to the north, bordering the west side of the Stuart Highway. Millar was in partnership with Freeman (surname), who had conducted some prospecting on neighbouring pegmatites, but litigation between the partners soon ended mining. Production was from a shallow pit to a depth of 2 metres, revealing mineralisation in a quartz vein only 20 cms below the surface. One source states only 1 tonne of ore was mined in 1980, across 1000 square metres, to a depth of 1.2 metres. Muscovite books are noted by this source in the pegmatite.
Explored by R.B. Mining Pty Ltd 1981, and Haddington Resources 2005-2006. The latter states the workings have been largely re-filled, and re-vegetated, with the pit fenced off. They further state the pegmatite could not be located due to the heavy ground disturbance in the area from prior mining/exploration.
There are two areas of workings called Main and South. Main is a discontinuous faulted pegmatite, discordant with the regional trend. The pegmatite meanders generally east south-east, with a 20-30 degree dip south, averaging 1.5 metres thick, but 3.5 metres in the pit. The pegmatite has intruded schist, interbedded with deeply weathered amphibolite. The pegmatite contains sections of the country rock within it, and quartz blows. Numerous faults offset the pegmatite.
The South workings are on a contorted pegmatite, 150 metres long, discordant trending east north-east, dipping 30-40 degrees south, with a thin layer of gravel covering it. Haddington states this is 200 metres south-west of the Main workings, as merely a scrape, with some low level ore heaps. The pegmatite sits in quartz and Bullion Schist.
Later testing by the Northern Territory Mines Department found patchy mineralisation in the South workings, and very limited mineralisation in the Main workings.
Neighbouring pegmatites to the north-west include Easy, Horizontal, and Anster. Halfway is about 500 metres to the south. Millars is about 2 kilometres west of the Stuart Highway. The minor shallow pit was located. See main Barrow Creek Pegmatite Field sub-heading for more geology information.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
7 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 DiagramDetailed Mineral List:
β Cassiterite Formula: SnO2 |
β 'Columbite-(Fe)-Columbite-(Mn) Series' |
β Kaolinite Formula: Al2(Si2O5)(OH)4 |
β 'Lepidolite' |
β Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
β Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 |
β Orthoclase Formula: K(AlSi3O8) |
β Quartz Formula: SiO2 |
β Scheelite Formula: Ca(WO4) |
β Spodumene Formula: LiAlSi2O6 |
β 'Tantalite' Formula: (Mn,Fe)(Ta,Nb)2O6 |
β 'Tapiolite' Formula: (Fe,Mn)(Ta,Nb)2O6 |
β 'Tourmaline' Formula: AD3G6 (T6O18)(BO3)3X3Z |
β 'Wolframite Group' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 4 - Oxides and Hydroxides | |||
---|---|---|---|
β | Quartz | 4.DA.05 | SiO2 |
β | Cassiterite | 4.DB.05 | SnO2 |
β | 'Wolframite Group' | 4.DB.30 va | |
Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
β | Scheelite | 7.GA.05 | Ca(WO4) |
Group 9 - Silicates | |||
β | Spodumene | 9.DA.30 | LiAlSi2O6 |
β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
β | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
β | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
β | Orthoclase | 9.FA.30 | K(AlSi3O8) |
Unclassified | |||
β | 'Lepidolite' | - | |
β | 'Tantalite' | - | (Mn,Fe)(Ta,Nb)2O6 |
β | 'Tapiolite' | - | (Fe,Mn)(Ta,Nb)2O6 |
β | 'Tourmaline' | - | AD3G6 (T6O18)(BO3)3X3Z |
β | 'Columbite-(Fe)-Columbite-(Mn) Series' | - |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | β Kaolinite | Al2(Si2O5)(OH)4 |
H | β Muscovite | KAl2(AlSi3O10)(OH)2 |
H | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Li | Lithium | |
Li | β Spodumene | LiAlSi2O6 |
B | Boron | |
B | β Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
O | Oxygen | |
O | β Cassiterite | SnO2 |
O | β Kaolinite | Al2(Si2O5)(OH)4 |
O | β Muscovite | KAl2(AlSi3O10)(OH)2 |
O | β Orthoclase | K(AlSi3O8) |
O | β Quartz | SiO2 |
O | β Scheelite | Ca(WO4) |
O | β Spodumene | LiAlSi2O6 |
O | β Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
O | β Tapiolite | (Fe,Mn)(Ta,Nb)2O6 |
O | β Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
O | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Al | Aluminium | |
Al | β Kaolinite | Al2(Si2O5)(OH)4 |
Al | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Al | β Orthoclase | K(AlSi3O8) |
Al | β Spodumene | LiAlSi2O6 |
Al | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Si | Silicon | |
Si | β Kaolinite | Al2(Si2O5)(OH)4 |
Si | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Si | β Orthoclase | K(AlSi3O8) |
Si | β Quartz | SiO2 |
Si | β Spodumene | LiAlSi2O6 |
Si | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
K | Potassium | |
K | β Muscovite | KAl2(AlSi3O10)(OH)2 |
K | β Orthoclase | K(AlSi3O8) |
K | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Ca | Calcium | |
Ca | β Scheelite | Ca(WO4) |
Mn | Manganese | |
Mn | β Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
Mn | β Tapiolite | (Fe,Mn)(Ta,Nb)2O6 |
Fe | Iron | |
Fe | β Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
Fe | β Tapiolite | (Fe,Mn)(Ta,Nb)2O6 |
Nb | Niobium | |
Nb | β Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
Nb | β Tapiolite | (Fe,Mn)(Ta,Nb)2O6 |
Sn | Tin | |
Sn | β Cassiterite | SnO2 |
Ta | Tantalum | |
Ta | β Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
Ta | β Tapiolite | (Fe,Mn)(Ta,Nb)2O6 |
W | Tungsten | |
W | β Scheelite | Ca(WO4) |
Other Regions, Features and Areas containing this locality
Australia
- Arunta OrogenOrogen
- Aileron ProvinceGeologic Province
- North Australian ElementCraton
- Northern Territory
- Kalkarindji Igneous ProvinceGeologic Province
Australian PlateTectonic Plate
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