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Dales Gorge, Wittenoom, Ashburton Shire, Western Australia, Australiai
Regional Level Types
Dales GorgeGorge
Wittenoom- not defined -
Ashburton ShireShire
Western AustraliaState
AustraliaCountry

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Latitude & Longitude (WGS84):
22° 28' 36'' South , 118° 33' 40'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:


Dales Gorge is a location in the Hamersley Range, near Wittenoom, however the Dales Gorge Member, or Dales Gorge Iron Formation, is more often referred to in the literature and this refers to a widespread and economically important geological formation in the area.

Mineral occurrences have been previously listed against the Dales Gorge Member, after some published references, eg. Miyano, T. and Klein, C. (1983), but these Mindat entries have been moved to Wittenoom (http://www.mindat.org/loc-264569.html), as a best guess location.

This member lies within the Hamersley Iron Province (http://www.mindat.org/loc-187883.html), in the Brockman Iron Formation. The upper layer of this is the Joffre Member of banded iron formations with minor thin shale interbeds; under this the Whaleback Shale Member; under this the Dales Gorge Member consisting of 17 banded iron formations and 16 shale macro bands; and lastly under this the Marra Mamba Iron Formation.

Riebeckite is abundant in the Dale Gorge Member, and probably in the Dales Gorge itself.

Mindat co-ordinates show the tourist site within the gorge including the campground, pools and waterfalls.

Please note asbestos (and related fibrous material possibly including crocidolite and riebeckite) is very dangerous to health and should be avoided.

Regions containing this locality

Australian Plate (Australia Plate)Tectonic Plate
West Australian Element, Western Australia, AustraliaCraton
Warakurna Large Igneous Province, Western Australia, AustraliaGeologic Province
Pilbara Craton, Western Australia, AustraliaCraton
Fortescue Basin, Western Australia, AustraliaBasin
Hamersley Basin, Western Australia, AustraliaBasin

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: Takashi M., Miyano S. (1982): Ferri-Annite From The Dales Gorge Iron Formation, Wittenoom Area, Western Australia, American Mineralogist (December 1982):67:1179-1194
Goethite
Formula: α-Fe3+O(OH)
Hematite
Formula: Fe2O3
Reference: Takashi M., Miyano S. (1982): Ferri-Annite From The Dales Gorge Iron Formation, Wittenoom Area, Western Australia, American Mineralogist (December 1982):67:1179-1194
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Takashi M., Miyano S. (1982): Ferri-Annite From The Dales Gorge Iron Formation, Wittenoom Area, Western Australia, American Mineralogist (December 1982):67:1179-1194
Quartz
Formula: SiO2
Reference: Takashi M., Miyano S. (1982): Ferri-Annite From The Dales Gorge Iron Formation, Wittenoom Area, Western Australia, American Mineralogist (December 1982):67:1179-1194
Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Reference: Ayres, D. E. (1972). Genesis of iron-bearing minerals in banded iron formation mesobands in the Dales Gorge Member, Hamersley Group, Western Australia. Economic Geology, 67(8), 1214-1233.; Takashi M., Miyano S. (1982): Ferri-Annite From The Dales Gorge Iron Formation, Wittenoom Area, Western Australia, American Mineralogist (December 1982):67:1179-1194
'Riebeckite Root Name' ?
Formula: ◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
Reference: Ayres, D. E. (1972). Genesis of iron-bearing minerals in banded iron formation mesobands in the Dales Gorge Member, Hamersley Group, Western Australia. Economic Geology, 67(8), 1214-1233.; Takashi M., Miyano S. (1982): Ferri-Annite From The Dales Gorge Iron Formation, Wittenoom Area, Western Australia, American Mineralogist (December 1982):67:1179-1194
'Riebeckite Root Name var: Crocidolite' ?
Formula: ◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
Reference: Ayres, D. E. (1972). Genesis of iron-bearing minerals in banded iron formation mesobands in the Dales Gorge Member, Hamersley Group, Western Australia. Economic Geology, 67(8), 1214-1233.; Takashi M., Miyano S. (1982): Ferri-Annite From The Dales Gorge Iron Formation, Wittenoom Area, Western Australia, American Mineralogist (December 1982):67:1179-1194
Stilpnomelane
Formula: (K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Reference: Takashi M., Miyano S. (1982): Ferri-Annite From The Dales Gorge Iron Formation, Wittenoom Area, Western Australia, American Mineralogist (December 1982):67:1179-1194
Tetraferriannite ?
Formula: KFe2+3((Fe3+,Al)Si3O10)(OH)2
Reference: AM 1982, 1179-94; CM 1998, 905-12

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Group 9 - Silicates
Riebeckite9.DE.25◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Stilpnomelane9.EG.40(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Tetraferriannite ?9.EC.20KFe2+3((Fe3+,Al)Si3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Riebeckite Root Name' ?-◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
'var: Crocidolite' ?-◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Tetraferriannite ?71.2.2b.4KFe2+3((Fe3+,Al)Si3O10)(OH)2
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined islands
Stilpnomelane74.1.1.1(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Riebeckite-◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
'Riebeckite Root Name' ?-◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
'var: Crocidolite' ?-◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2

List of minerals for each chemical element

HHydrogen
H Goethiteα-Fe3+O(OH)
H Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
H Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
H TetraferrianniteKFe32+((Fe3+,Al)Si3O10)(OH)2
H Riebeckite Root Name (var: Crocidolite)◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
H Riebeckite Root Name◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
OOxygen
O HematiteFe2O3
O QuartzSiO2
O Goethiteα-Fe3+O(OH)
O Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
O MagnetiteFe2+Fe23+O4
O Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
O AnkeriteCa(Fe2+,Mg)(CO3)2
O TetraferrianniteKFe32+((Fe3+,Al)Si3O10)(OH)2
O Riebeckite Root Name (var: Crocidolite)◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
O Riebeckite Root Name◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
FFluorine
F Riebeckite Root Name (var: Crocidolite)◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
F Riebeckite Root Name◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
NaSodium
Na Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Na Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Na Riebeckite Root Name (var: Crocidolite)◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Na Riebeckite Root Name◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
MgMagnesium
Mg Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
AlAluminium
Al Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
SiSilicon
Si QuartzSiO2
Si Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Si Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Si TetraferrianniteKFe32+((Fe3+,Al)Si3O10)(OH)2
Si Riebeckite Root Name (var: Crocidolite)◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Si Riebeckite Root Name◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
ClChlorine
Cl Riebeckite Root Name (var: Crocidolite)◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Cl Riebeckite Root Name◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
KPotassium
K Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
K TetraferrianniteKFe32+((Fe3+,Al)Si3O10)(OH)2
CaCalcium
Ca Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
FeIron
Fe HematiteFe2O3
Fe Goethiteα-Fe3+O(OH)
Fe Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Fe MagnetiteFe2+Fe23+O4
Fe Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe TetraferrianniteKFe32+((Fe3+,Al)Si3O10)(OH)2
Fe Riebeckite Root Name (var: Crocidolite)◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Fe Riebeckite Root Name◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2

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

Quaternary
0 - 2.588 Ma



ID: 710855
colluvium 38491

Age: Pleistocene (0 - 2.588 Ma)

Description: Colluvium and/or residual deposits, sheetwash, talus, scree; boulder, gravel, sand; may include minor alluvial or sand plain deposits, local calcrete and reworked laterite

Comments: regolith; synthesis of multiple published descriptions

Lithology: Regolith

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]

Siderian - Neoarchean
2300 - 2800 Ma



ID: 3185955
Archean-Paleoproterozoic sedimentary and volcanic rocks

Age: Precambrian (2300 - 2800 Ma)

Stratigraphic Name: Hamersley Group

Comments: Hamersley Basin

Lithology: Strataform assemblage(s); felsic volcanic rocks; chert,carbonate,iron formation,shale

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)
Miyano, T., Klein, C. (1983): Conditions of Reibeckite Formation In The Iron Formation Of The Dales Gorge Member, Hamersley Group, Western Australia, American Mineralogist (1983): 68: 517-529
Pecoits,E., Gingras M.K., Barley M.E., Kappler A., Posth N.R., Konshauser K.O. (2008): Paragenetic Sequence, Source, And Implication For Palaeo Ocean Chemistry, University of Alberta Canada, University of Western Australia, University of Tubingen Germany (November 2008): www.elsevier.com/locate/precamres
Takashi M., Miyano S. (1982): Ferri-Annite From The Dales Gorge Iron Formation, Wittenoom Area, Western Australia, American Mineralogist (December 1982):67:1179-1194


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