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River Ranch Mine, Beitbridge District, Matabeleland South, Zimbabwe

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Latitude & Longitude (WGS84): 22° 10' 6'' South , 29° 53' 0'' East
Latitude & Longitude (decimal): -22.16861,29.88361
GeoHash:G#: ksj3bh2d6
Locality type:Mine
Köppen climate type:BWh : Hot deserts climate


A diamond mine in a kimberlite pipe, owned by Auridiam Zimbabwe Pty Ltd. It was discovered by De Beers in 1974 during an exploration programme in Zimbabwe. In 1991, the property was acquired by Auridiam. Production started in 1992, and operations were gradually scaled up, but the mine was closed in 1998 due to low diamond prices. Located 12.5 km NW of Beitbridge.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


16 valid minerals.

Detailed Mineral List:

'Chevkinite Group'
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997) Mineral inclusions in diamonds from the River Ranch kimberlite, Zimbabwe. Contributions to Mineralogy and Petrology: 129: 366-384.; Kopylova, M.G., Rickard, R.S., Kleyenstueber, A., Taylor, W.R., Gurney, J.J., and Daniels, L.R.M. (1997) First occurrence of strontian K-Cr loparite and Cr-chevkinite in diamonds. Russian Geol. Geophys.: 38: 405–420 (English translation from Geol. Geofiz.).; Jambor, J.L. and Roberts, A.C. (1998) New mineral names. American Mineralogist: 83: 400-403.
'Chrome-Spinel (of Dana)'
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997): Contributions to Mineralogy and Petrology 129, 366-384.
Chromite
Formula: Fe2+Cr3+2O4
Reference: Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S. (2008): Ore Geology Reviews 34, 33-75.
'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. Cairncross, B. (2004) Field Guide To Rocks & Minerals Of Southern Africa: 90.
Enstatite
Formula: MgSiO3
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997): Contributions to Mineralogy and Petrology 129, 366-384.
Forsterite
Formula: Mg2SiO4
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997): Contributions to Mineralogy and Petrology 129, 366-384.
Graphite
Formula: C
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997): Contributions to Mineralogy and Petrology 129, 366-384.
Ilmenite
Formula: Fe2+TiO3
Reference: Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S. (2008): Ore Geology Reviews 34, 33-75.
Loparite-(Ce)
Formula: (Na,REE)Ti2O6
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997) Mineral inclusions in diamonds from the River Ranch kimberlite, Zimbabwe. Contributions to Mineralogy and Petrology: 129: 366-384.; Kopylova, M.G., Rickard, R.S., Kleyenstueber, A., Taylor, W.R., Gurney, J.J., and Daniels, L.R.M. (1997) First occurrence of strontian K-Cr loparite and Cr-chevkinite in diamonds. Russian Geol. Geophys.: 38: 405–420 (English translation from Geol. Geofiz.).; Jambor, J.L. and Roberts, A.C. (1998) New mineral names. American Mineralogist: 83: 400-403.
Pentlandite
Formula: (FexNiy)Σ9S8
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997): Contributions to Mineralogy and Petrology 129, 366-384.
Periclase
Formula: MgO
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997): Contributions to Mineralogy and Petrology 129, 366-384.
Periclase var: Ferropericlase
Formula: (Mg,Fe)O
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997): Contributions to Mineralogy and Petrology 129, 366-384.
Perovskite
Formula: CaTiO3
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997): Contributions to Mineralogy and Petrology 129, 366-384.
Polyakovite-(Ce)
Formula: (Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
Colour: khaki
Description: Listed as "Cr-chevkinite as inclusions up to 50 x 80 mm in diamond."
Reference: Kopylova, M.G., Rickard, R.S., Kleyenstueber, A., Taylor, W.R., Gurney, J.J., and Daniels, L.R.M. (1997) First occurrence of strontian K-Cr loparite and Cr-chevkinite in diamonds. Russian Geol. Geophys.: 38: 405–420 (English translation from Geol. Geofiz.).; Jambor, J.L. and Roberts, A.C. (1998) New mineral names. American Mineralogist: 83: 400-403.
Pyrope
Formula: Mg3Al2(SiO4)3
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997): Contributions to Mineralogy and Petrology 129, 366-384.
Pyrrhotite
Formula: Fe7S8
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997): Contributions to Mineralogy and Petrology 129, 366-384.
Rhönite
Formula: Ca2(Mg,Fe2+,Fe3+,Ti)6[O2|(Si,Al)6O18]
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997): Contributions to Mineralogy and Petrology 129, 366-384.
Spinel
Formula: MgAl2O4
Reference: Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997): Contributions to Mineralogy and Petrology 129, 366-384.
Tausonite
Formula: SrTiO3
Habit: elongate grains that are irregular in outline and 50 x 50 µm
Colour: light brown
Description: Listed as "K-Cr bearing loparite" inclusions in diamond.
Reference: Jambor, J.L. and Roberts, A.C. (1998) New mineral names. American Mineralogist: 83: 400-403.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Diamond'1.CB.10aC
Graphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
Pentlandite2.BB.15(FexNiy)Σ9S8
Pyrrhotite2.CC.10Fe7S8
Group 4 - Oxides and Hydroxides
'Chromite'4.BB.05Fe2+Cr3+2O4
Ilmenite4.CB.05Fe2+TiO3
Loparite-(Ce)4.CC.35(Na,REE)Ti2O6
Periclase4.AB.25MgO
var: Ferropericlase4.AB.25(Mg,Fe)O
Perovskite4.CC.30CaTiO3
Spinel4.BB.05MgAl2O4
Tausonite4.CC.35SrTiO3
Group 9 - Silicates
'Enstatite'9.DA.05MgSiO3
Forsterite9.AC.05Mg2SiO4
Polyakovite-(Ce)9.BE.70(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
Pyrope9.AD.25Mg3Al2(SiO4)3
Rhönite9.DH.40Ca2(Mg,Fe2+,Fe3+,Ti)6[O2|(Si,Al)6O18]
Unclassified Minerals, Rocks, etc.
'Chevkinite Group'-
'Chrome-Spinel (of Dana)'-
'Clinopyroxene Subgroup'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Diamond1.3.6.1C
Graphite1.3.6.2C
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 9:8
Pentlandite2.7.1.1(FexNiy)Σ9S8
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
Group 4 - SIMPLE OXIDES
AX
Periclase4.2.1.1MgO
A2X3
Ilmenite4.3.5.1Fe2+TiO3
Loparite-(Ce)4.3.3.3(Na,REE)Ti2O6
Perovskite4.3.3.1CaTiO3
Tausonite4.3.3.5SrTiO3
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Spinel7.2.1.1MgAl2O4
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Pyrope51.4.3a.1Mg3Al2(SiO4)3
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Enstatite65.1.2.1MgSiO3
Group 69 - INOSILICATES Chains with Side Branches or Loops
Chains with Side Branches or Loops with P>2
Rhönite69.2.1a.5Ca2(Mg,Fe2+,Fe3+,Ti)6[O2|(Si,Al)6O18]
Unclassified Minerals, Rocks, etc.
'Chevkinite Group'-
'Chrome-Spinel (of Dana)'-
'Clinopyroxene Subgroup'-
Periclase
var: Ferropericlase
-(Mg,Fe)O
Polyakovite-(Ce)-(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8

List of minerals for each chemical element

CCarbon
C DiamondC
C GraphiteC
OOxygen
O ChromiteFe2+Cr23+O4
O EnstatiteMgSiO3
O Periclase (var: Ferropericlase)(Mg,Fe)O
O ForsteriteMg2SiO4
O IlmeniteFe2+TiO3
O Loparite-(Ce)(Na,REE)Ti2O6
O PericlaseMgO
O PerovskiteCaTiO3
O Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
O PyropeMg3Al2(SiO4)3
O RhöniteCa2(Mg,Fe2+,Fe3+,Ti)6[O2|(Si,Al)6O18]
O SpinelMgAl2O4
O TausoniteSrTiO3
NaSodium
Na Loparite-(Ce)(Na,REE)Ti2O6
MgMagnesium
Mg EnstatiteMgSiO3
Mg Periclase (var: Ferropericlase)(Mg,Fe)O
Mg ForsteriteMg2SiO4
Mg PericlaseMgO
Mg Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
Mg PyropeMg3Al2(SiO4)3
Mg RhöniteCa2(Mg,Fe2+,Fe3+,Ti)6[O2|(Si,Al)6O18]
Mg SpinelMgAl2O4
AlAluminium
Al PyropeMg3Al2(SiO4)3
Al RhöniteCa2(Mg,Fe2+,Fe3+,Ti)6[O2|(Si,Al)6O18]
Al SpinelMgAl2O4
SiSilicon
Si EnstatiteMgSiO3
Si ForsteriteMg2SiO4
Si Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
Si PyropeMg3Al2(SiO4)3
Si RhöniteCa2(Mg,Fe2+,Fe3+,Ti)6[O2|(Si,Al)6O18]
SSulfur
S Pentlandite(FexNiy)Σ9S8
S PyrrhotiteFe7S8
CaCalcium
Ca PerovskiteCaTiO3
Ca Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
Ca RhöniteCa2(Mg,Fe2+,Fe3+,Ti)6[O2|(Si,Al)6O18]
TiTitanium
Ti IlmeniteFe2+TiO3
Ti Loparite-(Ce)(Na,REE)Ti2O6
Ti PerovskiteCaTiO3
Ti Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
Ti RhöniteCa2(Mg,Fe2+,Fe3+,Ti)6[O2|(Si,Al)6O18]
Ti TausoniteSrTiO3
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
FeIron
Fe ChromiteFe2+Cr23+O4
Fe Periclase (var: Ferropericlase)(Mg,Fe)O
Fe IlmeniteFe2+TiO3
Fe Pentlandite(FexNiy)Σ9S8
Fe Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
Fe PyrrhotiteFe7S8
Fe RhöniteCa2(Mg,Fe2+,Fe3+,Ti)6[O2|(Si,Al)6O18]
NiNickel
Ni Pentlandite(FexNiy)Σ9S8
SrStrontium
Sr Loparite-(Ce)(Na,REE)Ti2O6
Sr TausoniteSrTiO3
NbNiobium
Nb Loparite-(Ce)(Na,REE)Ti2O6
Nb Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
CeCerium
Ce Loparite-(Ce)(Na,REE)Ti2O6
Ce Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
ThThorium
Th Loparite-(Ce)(Na,REE)Ti2O6

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

Archean
2500 - 4000 Ma



ID: 3191072
Archean crystalline metamorphic rocks

Age: Archean (2500 - 4000 Ma)

Lithology: Crystalline metamorphic 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
2500 - 2800 Ma



ID: 3311857

Age: Neoarchean (2500 - 2800 Ma)

Lithology: Plutonic and metamorphic

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

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)
Kopylova, M.G., Gurney, J.J., and Daniels, L.R.M. (1997) Mineral inclusions in diamonds from the River Ranch kimberlite, Zimbabwe. Contributions to Mineralogy and Petrology: 129: 366-384.
Kopylova, M.G., Rickard, R.S., Kleyenstueber, A., Taylor, W.R., Gurney, J.J., and Daniels, L.R.M. (1997) First occurrence of strontian K-Cr loparite and Cr-chevkinite in diamonds. Russian Geol. Geophys.: 38: 405–420 (English translation from Geol. Geofiz.).
Cairncross, B. (2004) Field Guide To Rocks & Minerals Of Southern Africa: 90.
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.


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