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Helam Mine, Swartruggens, Bojanala Platinum District, North West, South Africai
Regional Level Types
Helam MineMine
Swartruggens- not defined -
Bojanala Platinum DistrictDistrict
North WestProvince
South AfricaCountry

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Key
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Latitude & Longitude (WGS84): 25° 35' 35'' South , 26° 39' 33'' East
Latitude & Longitude (decimal): -25.59306,26.65917
GeoHash:G#: ke6yqsute
Locality type:Mine
Köppen climate type:Cwa : Monsoon-influenced humid subtropical climate


Nooitgedacht farm 381 JP located approx 70 km west of Rustenburg. An active diamond mine, currently owned by Petra Diamonds. The deposit consists of a set of sub-parallel kimberlite dykes intruded into Proterozoic lavas. At least six dykes occur in the area; their diamond grades vary considerably, and one of them is barren. The diamonds from this mine have distinct colours, such as orange-amber or blue; stones with multiple colours occur as well.

Regions containing this locality

Transvaal, South Africa

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

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

'Apatite'
Reference: Hammond, A. L., & Mitchell, R. H. (2002). Accessory mineralogy of orangeite from Swartruggens, South Africa. Mineralogy and Petrology, 76(1-2), 1-19.
Baryte
Formula: BaSO4
Reference: Hammond, A. L., & Mitchell, R. H. (2002). Accessory mineralogy of orangeite from Swartruggens, South Africa. Mineralogy and Petrology, 76(1-2), 1-19.
Calcite
Formula: CaCO3
Reference: Hammond, A. L., & Mitchell, R. H. (2002). Accessory mineralogy of orangeite from Swartruggens, South Africa. Mineralogy and Petrology, 76(1-2), 1-19.
'Clinopyroxene Subgroup'
Reference: Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S. (2008): Ore Geology Reviews 34, 33-75.
Diamond
Formula: C
Reference: Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S. (2008): Ore Geology Reviews 34, 33-75.; Hammond, A. L., & Mitchell, R. H. (2002). Accessory mineralogy of orangeite from Swartruggens, South Africa. Mineralogy and Petrology, 76(1-2), 1-19.
'Fayalite-Forsterite Series'
Reference: Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S. (2008): Ore Geology Reviews 34, 33-75.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Hammond, A. L., & Mitchell, R. H. (2002). Accessory mineralogy of orangeite from Swartruggens, South Africa. Mineralogy and Petrology, 76(1-2), 1-19.
Magnetite var: Titaniferous Magnetite
Formula: Fe2+(Fe3+,Ti)2O4
Reference: Hammond, A. L., & Mitchell, R. H. (2002). Accessory mineralogy of orangeite from Swartruggens, South Africa. Mineralogy and Petrology, 76(1-2), 1-19.
Majorite
Formula: Mg3(Fe2+,Si,Al)2(SiO4)3
Reference: Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S. (2008): Ore Geology Reviews 34, 33-75.
Perovskite
Formula: CaTiO3
Reference: Hammond, A. L., & Mitchell, R. H. (2002). Accessory mineralogy of orangeite from Swartruggens, South Africa. Mineralogy and Petrology, 76(1-2), 1-19.
Quartz
Formula: SiO2
Reference: Hammond, A. L., & Mitchell, R. H. (2002). Accessory mineralogy of orangeite from Swartruggens, South Africa. Mineralogy and Petrology, 76(1-2), 1-19.
Rutile
Formula: TiO2
Reference: Hammond, A. L., & Mitchell, R. H. (2002). Accessory mineralogy of orangeite from Swartruggens, South Africa. Mineralogy and Petrology, 76(1-2), 1-19.
Sanidine
Formula: K(AlSi3O8)
Reference: Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S. (2008): Ore Geology Reviews 34, 33-75.
Strontianite
Formula: SrCO3
Reference: Hammond, A. L., & Mitchell, R. H. (2002). Accessory mineralogy of orangeite from Swartruggens, South Africa. Mineralogy and Petrology, 76(1-2), 1-19.
Wadeite
Formula: K2Zr(Si3O9)
Reference: Mineralogy and Petrology Volume 76 Issue 1-2 (2002) pp 1-19; Hammond, A. L., & Mitchell, R. H. (2002). Accessory mineralogy of orangeite from Swartruggens, South Africa. Mineralogy and Petrology, 76(1-2), 1-19.
Zircon
Formula: Zr(SiO4)
Reference: Hammond, A. L., & Mitchell, R. H. (2002). Accessory mineralogy of orangeite from Swartruggens, South Africa. Mineralogy and Petrology, 76(1-2), 1-19.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Diamond'1.CB.10aC
Group 4 - Oxides and Hydroxides
'Magnetite'4.BB.05Fe2+Fe3+2O4
var: Titaniferous Magnetite4.BB.05Fe2+(Fe3+,Ti)2O4
'Perovskite'4.CC.30CaTiO3
'Quartz'4.DA.05SiO2
'Rutile'4.DB.05TiO2
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
'Strontianite'5.AB.15SrCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Baryte'7.AD.35BaSO4
Group 9 - Silicates
'Majorite'9.AD.25Mg3(Fe2+,Si,Al)2(SiO4)3
'Sanidine'9.FA.30K(AlSi3O8)
Wadeite9.CA.10K2Zr(Si3O9)
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Clinopyroxene Subgroup'-
'Fayalite-Forsterite Series'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Diamond1.3.6.1C
Group 4 - SIMPLE OXIDES
A2X3
Perovskite4.3.3.1CaTiO3
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Strontianite14.1.3.3SrCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Majorite51.4.3a.5Mg3(Fe2+,Si,Al)2(SiO4)3
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 59 - CYCLOSILICATES Three-Membered Rings
Three-Membered Rings, anhydrous, no other anions
Wadeite59.1.1.4K2Zr(Si3O9)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Sanidine76.1.1.2K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Clinopyroxene Subgroup'-
'Fayalite-Forsterite Series'-
Magnetite
var: Titaniferous Magnetite
-Fe2+(Fe3+,Ti)2O4

List of minerals for each chemical element

CCarbon
C CalciteCaCO3
C DiamondC
C StrontianiteSrCO3
OOxygen
O BaryteBaSO4
O CalciteCaCO3
O MagnetiteFe2+Fe23+O4
O MajoriteMg3(Fe2+,Si,Al)2(SiO4)3
O PerovskiteCaTiO3
O QuartzSiO2
O RutileTiO2
O SanidineK(AlSi3O8)
O StrontianiteSrCO3
O Magnetite (var: Titaniferous Magnetite)Fe2+(Fe3+,Ti)2O4
O WadeiteK2Zr(Si3O9)
O ZirconZr(SiO4)
MgMagnesium
Mg MajoriteMg3(Fe2+,Si,Al)2(SiO4)3
AlAluminium
Al SanidineK(AlSi3O8)
SiSilicon
Si MajoriteMg3(Fe2+,Si,Al)2(SiO4)3
Si QuartzSiO2
Si SanidineK(AlSi3O8)
Si WadeiteK2Zr(Si3O9)
Si ZirconZr(SiO4)
SSulfur
S BaryteBaSO4
KPotassium
K SanidineK(AlSi3O8)
K WadeiteK2Zr(Si3O9)
CaCalcium
Ca CalciteCaCO3
Ca PerovskiteCaTiO3
TiTitanium
Ti PerovskiteCaTiO3
Ti RutileTiO2
Ti Magnetite (var: Titaniferous Magnetite)Fe2+(Fe3+,Ti)2O4
FeIron
Fe MagnetiteFe2+Fe23+O4
Fe Magnetite (var: Titaniferous Magnetite)Fe2+(Fe3+,Ti)2O4
SrStrontium
Sr StrontianiteSrCO3
ZrZirconium
Zr WadeiteK2Zr(Si3O9)
Zr ZirconZr(SiO4)
BaBarium
Ba BaryteBaSO4

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

Rhyacian
2050 - 2300 Ma



ID: 3311972

Age: Rhyacian (2050 - 2300 Ma)

Lithology: Sedimentary and volcaniclastic

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

Rhyacian - Siderian
2050 - 2500 Ma



ID: 2238214
Pretoria Group of Transvaal Supergroup

Age: Proterozoic (2050 - 2500 Ma)

Stratigraphic Name: Pretoria Group

Description: Andesite, conglomerate

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

Siderian
2300 - 2500 Ma



ID: 3184872
Paleoproterozoic 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]

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)
Mineralogy and Petrology (2002), 76(1/2), 1-19.
Department of Minerals and Energy, Republic of South Africa (2003), South African Diamond Handbook and Diamond Mines Directory.
Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S., (2008), Kimberlite-hosted diamond deposits of southern Africa: A review. Ore Geology Reviews 34, 33-75.

External Links



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