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Johannsen's Phlogopite Mine, Strangways Range, Central Desert Region, Northern Territory, Australiai
Regional Level Types
Johannsen's Phlogopite MineMine
Strangways RangeMountain Range
Central Desert RegionRegion
Northern TerritoryTerritory
AustraliaCountry

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Latitude & Longitude (WGS84): 23° 13' 41'' South , 134° 6' 7'' East
Latitude & Longitude (decimal): -23.22833,134.10222
GeoHash:G#: qgz7ge6m0
Locality type:Mine
Köppen climate type:BWh : Hot deserts climate


Johannsen's Phlogopite Mine operated in the early 1940's and produced about 3.6 tonnes of phlogopite. The phlogopite was recovered from shafts to about 15 metres depth, but much of it contained inclusions of euhedral magnetite, rendering it unsuitable for industrial use.

Kurt Gerhardt Johannsen was born 11 January 1915 at Deep Well Station in the Northern Territory. While only achieving an education to grade 3 in primary school, his mechanical abilities and business acumen saw him in great demand across central Australia. He started working aged 11. The varieties of enterprises Kurt was involved with during his lifetime is startling, a brief summary provided here.

Due to drought and his father's sickness, the family abandoned the station in 1929, and Kurt took up rubbish collecting in Alice Springs. Then building houses, sinking wells, carting firewood, repairing old trucks, windmills and pumps. He also carted general stores to outlying areas.

In 1932 he obtained the mail run to areas east of Alice Springs, the following year the mail run to Tennant Creek, and Birdum at the Darwin railhead. He briefly conducted mining at the Winnecke Goldfield across 1932-1933. Then he started building his own trucks. By 1937 he was working a mica mine called Aulgana with Sam Weller in the Harts Range. He established a salt depot and garage in Alice Springs, built a gas powered engine, and constructed early road trains to cart cattle. A brief period in 1943 he mined mica at the location this is written under, and by 1949 was mining copper in the Jervois area, which continued on and off for a number of years. He conducted the first mining development at the Rum Jungle Uranium Mine.

Then in 1950 he joined two other men to search for the fabled Lasseter's Reef. Across the 1950's and 60's his road train business, and copper mining at Jervois continued. In 1967, he joined Joe Baldesera, who had discovered the Tosca turquoise mine, however the gemstone grades were too variable, and they sold out to a company. From 1972 to 1977, he joined his son Lindsay to mine scheelite in the Bonya Hills, and Molyhill, before retiring to Adelaide.

The Johannsen Phlogopite Mine is in rugged country in the southern part of Strangways in a section called the Utnalanama Range. It is located 49 kilometres north along the Stuart Highway from Alice Springs, then take the road towards The Garden pastoral station homestead to the east. At roughly 30 kilometres along this road, a track winds north into the hills to the workings. A shack/shed, water tanks is found at the end of the track. Workings consist of a shaft and mine dumps.

Lensoid masses of coarse grained phlogopite as large crystals is found in coarse grained garnet-cordierite-quartz-feldspar granulite, also containing pods of mafic granulite. Galena, sphalerite and chalcopyrite, with or without phlogopite can also be found on the dumps, with minor covellite. Other minerals found on the dump are coarse grained olivine, calcite, spinel, and magnetite.

The mine is part of a tightly folded synform, disrupted later by a fault filling pegmatite. Country rock is light grey medium grained spotted hypersthene-cordierite granulite, dark hypersthene, and pink garnet (1-5 cms) poikiloblastic porphyroblasts (mineral with small inclusions of rock which came before it).

Rock types near the old shaft are highly variable and interesting:
- hypersthene-biotite-plagioclase-sapphirine-cordierite
- biotite-chlorite-spinel-corundum-hogbomite (Fe)-magnetite
- brown cordierite-plagioclase-sphene
- spinel-gedrite-hypersthene-phlogopite-sapphirine
- hypersthene-gedrite-spinel

Regions containing this locality

Australia PlatePlate
North Australian Element, AustraliaCraton
Arunta Orogen, AustraliaOrogen
Aileron Province, Arunta Orogen, AustraliaGeologic Province

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


21 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-Anorthite Series'
Anorthite
Formula: Ca(Al2Si2O8)
Anthophyllite
Formula: ☐{Mg2}{Mg5}(Si8O22)(OH)2
'Biotite'
Calcite
Formula: CaCO3
Chalcopyrite
Formula: CuFeS2
'Chlorite Group'
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Clinochlore var: Sheridanite
Formula: (Mg,Al,Fe)6(Si,Al)4O10(OH)8
Clinohumite
Formula: Mg9(SiO4)4F2
Cordierite
Formula: (Mg,Fe)2Al3(AlSi5O18)
Corundum
Formula: Al2O3
Covellite
Formula: CuS
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
'Fayalite-Forsterite Series'
'Feldspar Group'
Ferrohögbomite-2N2S
Formula: [(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2
Galena
Formula: PbS
'Garnet Group'
Formula: X3Z2(SiO4)3
Gedrite
Formula: ☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
'Hornblende'
'Hypersthene'
Formula: (Mg,Fe)SiO3
Magnetite
Formula: Fe2+Fe3+2O4
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Quartz
Formula: SiO2
Sapphirine
Formula: Mg4(Mg3Al9)O4[Si3Al9O36]
Sphalerite
Formula: ZnS
Spinel
Formula: MgAl2O4
Staurolite
Formula: Fe2+2Al9Si4O23(OH)
Titanite
Formula: CaTi(SiO4)O

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Covellite2.CA.05aCuS
Galena2.CD.10PbS
Sphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
Corundum4.CB.05Al2O3
Ferrohögbomite-2N2S4.00.[(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Spinel4.BB.05MgAl2O4
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 9 - Silicates
Anorthite9.FA.35Ca(Al2Si2O8)
Anthophyllite9.DE.05☐{Mg2}{Mg5}(Si8O22)(OH)2
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
var: Sheridanite9.EC.55(Mg,Al,Fe)6(Si,Al)4O10(OH)8
Clinohumite9.AF.55Mg9(SiO4)4F2
Cordierite9.CJ.10(Mg,Fe)2Al3(AlSi5O18)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Gedrite9.DD.05☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Sapphirine9.DH.45Mg4(Mg3Al9)O4[Si3Al9O36]
Staurolite9.AF.30Fe2+2Al9Si4O23(OH)
Titanite9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Biotite'-
'Chlorite Group'-
'Fayalite-Forsterite Series'-
'Feldspar Group'-
'Garnet Group'-X3Z2(SiO4)3
'Hornblende'-
'Hypersthene'-(Mg,Fe)SiO3

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Group 4 - SIMPLE OXIDES
A2X3
Corundum4.3.1.1Al2O3
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Spinel7.2.1.1MgAl2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Staurolite52.2.3.1Fe2+2Al9Si4O23(OH)
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Clinohumite52.3.2d.1Mg9(SiO4)4F2
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with Al substituted rings
Cordierite61.2.1.1(Mg,Fe)2Al3(AlSi5O18)
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Anthophyllite66.1.2.1☐{Mg2}{Mg5}(Si8O22)(OH)2
Gedrite66.1.2.5☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Group 69 - INOSILICATES Chains with Side Branches or Loops
Chains with Side Branches or Loops with P>2
Sapphirine69.2.1b.1Mg4(Mg3Al9)O4[Si3Al9O36]
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
Anorthite-Ca(Al2Si2O8)
'Biotite'-
'Chlorite Group'-
Clinochlore
var: Sheridanite
-(Mg,Al,Fe)6(Si,Al)4O10(OH)8
'Fayalite-Forsterite Series'-
'Feldspar Group'-
Ferrohögbomite-2N2S-[(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2
'Garnet Group'-X3Z2(SiO4)3
'Hornblende'-
'Hypersthene'-(Mg,Fe)SiO3

List of minerals for each chemical element

HHydrogen
H Ferrohögbomite-2N2S[(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2
H PhlogopiteKMg3(AlSi3O10)(OH)2
H Clinochlore (var: Sheridanite)(Mg,Al,Fe)6(Si,Al)4O10(OH)8
H StauroliteFe22+Al9Si4O23(OH)
H ClinochloreMg5Al(AlSi3O10)(OH)8
H Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
H Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CCarbon
C CalciteCaCO3
OOxygen
O Ferrohögbomite-2N2S[(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2
O Garnet GroupX3Z2(SiO4)3
O PhlogopiteKMg3(AlSi3O10)(OH)2
O MagnetiteFe2+Fe23+O4
O Hypersthene(Mg,Fe)SiO3
O SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
O SpinelMgAl2O4
O AnorthiteCa(Al2Si2O8)
O CorundumAl2O3
O Clinochlore (var: Sheridanite)(Mg,Al,Fe)6(Si,Al)4O10(OH)8
O StauroliteFe22+Al9Si4O23(OH)
O Cordierite(Mg,Fe)2Al3(AlSi5O18)
O ClinochloreMg5Al(AlSi3O10)(OH)8
O QuartzSiO2
O CalciteCaCO3
O Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
O Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O TitaniteCaTi(SiO4)O
O ClinohumiteMg9(SiO4)4F2
FFluorine
F ClinohumiteMg9(SiO4)4F2
MgMagnesium
Mg Ferrohögbomite-2N2S[(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg Hypersthene(Mg,Fe)SiO3
Mg SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
Mg SpinelMgAl2O4
Mg Clinochlore (var: Sheridanite)(Mg,Al,Fe)6(Si,Al)4O10(OH)8
Mg Cordierite(Mg,Fe)2Al3(AlSi5O18)
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Mg Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
Mg ClinohumiteMg9(SiO4)4F2
AlAluminium
Al Ferrohögbomite-2N2S[(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
Al SpinelMgAl2O4
Al AnorthiteCa(Al2Si2O8)
Al CorundumAl2O3
Al Clinochlore (var: Sheridanite)(Mg,Al,Fe)6(Si,Al)4O10(OH)8
Al StauroliteFe22+Al9Si4O23(OH)
Al Cordierite(Mg,Fe)2Al3(AlSi5O18)
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
SiSilicon
Si Garnet GroupX3Z2(SiO4)3
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si Hypersthene(Mg,Fe)SiO3
Si SapphirineMg4(Mg3Al9)O4[Si3Al9O36]
Si AnorthiteCa(Al2Si2O8)
Si Clinochlore (var: Sheridanite)(Mg,Al,Fe)6(Si,Al)4O10(OH)8
Si StauroliteFe22+Al9Si4O23(OH)
Si Cordierite(Mg,Fe)2Al3(AlSi5O18)
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si QuartzSiO2
Si Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Si Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si TitaniteCaTi(SiO4)O
Si ClinohumiteMg9(SiO4)4F2
SSulfur
S SphaleriteZnS
S GalenaPbS
S ChalcopyriteCuFeS2
S CovelliteCuS
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca AnorthiteCa(Al2Si2O8)
Ca CalciteCaCO3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca TitaniteCaTi(SiO4)O
TiTitanium
Ti Ferrohögbomite-2N2S[(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2
Ti TitaniteCaTi(SiO4)O
FeIron
Fe Ferrohögbomite-2N2S[(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2
Fe MagnetiteFe2+Fe23+O4
Fe Hypersthene(Mg,Fe)SiO3
Fe Clinochlore (var: Sheridanite)(Mg,Al,Fe)6(Si,Al)4O10(OH)8
Fe StauroliteFe22+Al9Si4O23(OH)
Fe Cordierite(Mg,Fe)2Al3(AlSi5O18)
Fe ChalcopyriteCuFeS2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CuCopper
Cu ChalcopyriteCuFeS2
Cu CovelliteCuS
ZnZinc
Zn Ferrohögbomite-2N2S[(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2
Zn SphaleriteZnS
PbLead
Pb GalenaPbS

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

Paleoproterozoic
1600 - 2500 Ma



ID: 827851
Erontonga Metamorphics

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Erontonga Metamorphics

Description: Layered felsic granulite and cordierite felsic granulite, some mafic granulite; amphibolite; rare calc-silicate and magnesian rocks

Comments: high grade metamorphic rock; synthesis of multiple published descriptions

Lithology: High grade metamorphic rock

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]

Paleoproterozoic
1600 - 2500 Ma



ID: 3186582
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 Ma)

Comments: Arunta Block

Lithology: Granulite grade orthogneiss/paragneiss/metavolcanic gneiss

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)
Warren, R.G. (1980) Summary descriptions of mineral deposits by commodities in the Alice Springs 1:250 000 Sheet Area, Northern Territory. Bureau of Mineral Resources, Geology and Geophysics, Record 1980/44.
Wilson, A.F. (1977) A zincian högbomite and some other högbomites from the Strangways Range, Central Australia. Mineralogical Magazine, Vol.41, pp. 337-344.
Australian Stockman's Hall of Fame and Outback Heritage Centre, Kurt Gerhardt Johannsen, b. 11 January 1915, Deep Well NT, USH00471.
Dampier Mining Company Ltd (1977) Exploration Licences 1341 and 1342. "Strangways Range' and 'Hale River', Arunta Complex, Northern Territory, Final Report CR77/139.
Hejny, C., Gnos, E., Grobety, B., Armbruster, T. (2002) Crystal chemistry of the polysome ferrohögbomite-2N2S, a long-known but newly defined mineral species. European Journal of Mineralogy, 14:5, 957-967.


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