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East Rand Proprietary Mine (ERPM Mine), Boksburg, Ekurhuleni District (East Rand), Gauteng, South Africai
Regional Level Types
East Rand Proprietary Mine (ERPM Mine)Mine
Boksburg- not defined -
Ekurhuleni District (East Rand)District
GautengProvince
South AfricaCountry

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Latitude & Longitude (WGS84): 26° 14' 50'' South , 28° 13' 38'' East
Latitude & Longitude (decimal): -26.24722,28.22722
GeoHash:G#: kek4dmf6v
Area:53 km2
Locality type:Mine
Köppen climate type:Cwb : Subtropical highland climate or temperate oceanic climate with dry winters


A gold mine, started in 1893.
Typical Witwatersrand gold mineralisation.

During its history one of the largest gold mines in the world, at one point also the deepest.
In 1993, mining was at a level of 3.430 m below surface.

Regions containing this locality

Transvaal, South Africa

Province (Former) - 838 mineral species & varietal names listed

Witwatersrand Gold Fields, South Africa

Mining Region - 278 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

'Apatite'
Reference: Jeffery, D. G. (2015). Structural discontinuties in the Witwatersrand group on the ERPM mine their geology, geochemistry and rock mechanics behaviour (Doctoral dissertation).
'Chlorite Group'
Reference: Jeffery, D. G. (2015). Structural discontinuties in the Witwatersrand group on the ERPM mine their geology, geochemistry and rock mechanics behaviour (Doctoral dissertation).
Chloritoid
Formula: (Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Reference: Jeffery, D. G. (2015). Structural discontinuties in the Witwatersrand group on the ERPM mine their geology, geochemistry and rock mechanics behaviour (Doctoral dissertation).
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Jeffery, D. G. (2015). Structural discontinuties in the Witwatersrand group on the ERPM mine their geology, geochemistry and rock mechanics behaviour (Doctoral dissertation).
Gold
Formula: Au
Reference: Metal Mining Mining Geol.(1937),A.I.M.E.:320.; Jeffery, D. G. (2015). Structural discontinuties in the Witwatersrand group on the ERPM mine their geology, geochemistry and rock mechanics behaviour (Doctoral dissertation).
Leucoxene
Reference: Jeffery, D. G. (2015). Structural discontinuties in the Witwatersrand group on the ERPM mine their geology, geochemistry and rock mechanics behaviour (Doctoral dissertation).
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Jeffery, D. G. (2015). Structural discontinuties in the Witwatersrand group on the ERPM mine their geology, geochemistry and rock mechanics behaviour (Doctoral dissertation).
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Jeffery, D. G. (2015). Structural discontinuties in the Witwatersrand group on the ERPM mine their geology, geochemistry and rock mechanics behaviour (Doctoral dissertation).
Pyrite
Formula: FeS2
Reference: Jeffery, D. G. (2015). Structural discontinuties in the Witwatersrand group on the ERPM mine their geology, geochemistry and rock mechanics behaviour (Doctoral dissertation).
Quartz
Formula: SiO2
Reference: Minerals of South Africa; Jeffery, D. G. (2015). Structural discontinuties in the Witwatersrand group on the ERPM mine their geology, geochemistry and rock mechanics behaviour (Doctoral dissertation).
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Jeffery, D. G. (2015). Structural discontinuties in the Witwatersrand group on the ERPM mine their geology, geochemistry and rock mechanics behaviour (Doctoral dissertation).
Zircon
Formula: Zr(SiO4)
Reference: Jeffery, D. G. (2015). Structural discontinuties in the Witwatersrand group on the ERPM mine their geology, geochemistry and rock mechanics behaviour (Doctoral dissertation).

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Gold'1.AA.05Au
Group 2 - Sulphides and Sulfosalts
'Pyrite'2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
'Quartz'4.DA.05SiO2
Group 9 - Silicates
'Chloritoid'9.AF.85(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
'Epidote'9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
'Muscovite'9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Chlorite Group'-
'Leucoxene'-
Tourmaline-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Chloritoid52.3.3.1(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
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 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Chlorite Group'-
Leucoxene-
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
OOxygen
O Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O ZirconZr(SiO4)
AlAluminium
Al Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
SiSilicon
Si Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si ZirconZr(SiO4)
SSulfur
S PyriteFeS2
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
CaCalcium
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
FeIron
Fe Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe PyriteFeS2
ZrZirconium
Zr ZirconZr(SiO4)
AuGold
Au GoldAu

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

Siderian
2300 - 2500 Ma



ID: 3185125
Paleoproterozoic sedimentary and volcanic rocks

Age: Siderian (2300 - 2500 Ma)

Lithology: Mafic-intermediate undivided volcanic rocks

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]

Neoarchean - Mesoarchean
2500 - 3200 Ma



ID: 3308849

Age: Archean (2500 - 3200 Ma)

Lithology: Volcanic-sedimentary

Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM. [190]

Neoarchean - Mesoarchean
2500 - 3200 Ma



ID: 2230999
Turffontein Subgroup of Central Rand Group of Witwatersrand Supergroup

Age: Archean (2500 - 3200 Ma)

Stratigraphic Name: Turffontein Subgroup

Description: Quartzite, conglomerate

Reference: Council for Geoscience. Geologic map of South Africa, 1:1M. National Science Councils of South Africa. [41]

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)
Metal Mining Mining Geol.(1937), A.I.M.E.: 320.
Journal of the South African Institute of Mining and Metallurgy (1973): 185, 187.
Daul, J., Bauer, K. & Moser, P. (1993): Bergbau in Namiba - Erfahrungen einer Studienreise. Institut für Bergbaukunde, Bergtechnik und Bergwirtschaft, Wissenschaftliche Schriftenreihe No. 3, Leoben, Austria, 130 pp (in German).
Jeffery, D. G. (2015). Structural discontinuties in the Witwatersrand group on the ERPM mine their geology, geochemistry and rock mechanics behaviour (Doctoral dissertation University of Witwatersrand).


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