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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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07349810017272031654787.jpg
Crocidolite

Dales Gorge, Wittenoom, Ashburton Shire, Western Australia, Australia
07349810017272031654787.jpg
Crocidolite

Dales Gorge, Wittenoom, Ashburton Shire, Western Australia, Australia
07349810017272031654787.jpg
Crocidolite

Dales Gorge, Wittenoom, Ashburton Shire, Western Australia, Australia
Latitude & Longitude (WGS84):
22° 28' 36'' South , 118° 33' 40'' East
Latitude & Longitude (decimal):
-22.47667,118.56138
GRN:
S15E78
Type:
Gorge
Köppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
12562
Long-form identifier:
mindat:1:2:12562:1
GUID (UUID V4):
0


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.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

ⓘ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ Hematite
Formula: Fe2O3
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Quartz
Formula: SiO2
ⓘ Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
ⓘ 'Riebeckite Root Name Group' ?
Formula: ◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
ⓘ 'Riebeckite Root Name Group var. Crocidolite' ?
Formula: ◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
ⓘ Stilpnomelane
Formula: (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
ⓘ Tetraferriannite ?
Formula: KFe2+3(Si3Fe3+)O10(OH)2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘ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
ⓘTetraferriannite ?9.EC.20KFe2+3(Si3Fe3+)O10(OH)2
ⓘStilpnomelane9.EG.40(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Unclassified
ⓘ'Riebeckite Root Name Group' ?-◻[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ⓘ GoethiteFe3+O(OH)
Hⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Hⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Hⓘ TetraferrianniteKFe32+(Si3Fe3+)O10(OH)2
Hⓘ Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Hⓘ Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
CCarbon
Cⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
OOxygen
Oⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Oⓘ GoethiteFe3+O(OH)
Oⓘ HematiteFe2O3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ QuartzSiO2
Oⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Oⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Oⓘ TetraferrianniteKFe32+(Si3Fe3+)O10(OH)2
Oⓘ Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Oⓘ Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
FFluorine
Fⓘ Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Fⓘ Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
NaSodium
Naⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Naⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Naⓘ Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Naⓘ Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
MgMagnesium
Mgⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Mgⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
AlAluminium
Alⓘ Stilpnomelane(K,Ca,Na)(Fe,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)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Siⓘ TetraferrianniteKFe32+(Si3Fe3+)O10(OH)2
Siⓘ Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Siⓘ Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
ClChlorine
Clⓘ Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Clⓘ Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
KPotassium
Kⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Kⓘ TetraferrianniteKFe32+(Si3Fe3+)O10(OH)2
CaCalcium
Caⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Caⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
FeIron
Feⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Feⓘ GoethiteFe3+O(OH)
Feⓘ HematiteFe2O3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Feⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Feⓘ TetraferrianniteKFe32+(Si3Fe3+)O10(OH)2
Feⓘ Riebeckite Root Name Group◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)2
Feⓘ Riebeckite Root Name Group var. Crocidolite◻[Na2][Z32+Fe23+]Si8O22(OH,F,Cl)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

Miyano, T., Miyano, S. (1982) Ferri-annite from the Dales Gorge Member iron-formations, Wittenoom area, Western Australia. American Mineralogist, 67 (11-12) 1179-1194
Miyano, Takashi, Klein, Cornelis (1983) Conditions of riebeckite formation in the iron-formation of the Dales Gorge Member, Hamersley Group, Western Australia. American Mineralogist, 68 (5-6) 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
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