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Kagem Emerald Mine, Kafubu Emerald District, Ndola, Ndola District, Copperbelt Province, Zambia

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Latitude & Longitude (WGS84): 13° 5' 21'' South , 28° 8' 19'' East
Latitude & Longitude (decimal): -13.08917,28.13867
GeoHash:G#: ktsj831yn
Owned/operated by:Gemfields plc (75%)
Locality type:Mine
Köppen climate type:Cwa : Monsoon-influenced humid subtropical climate


Company founded in 1984 to regain control of mines in the Kafubu district.
Apparently "Africa's largest emerald mine" (Elements 5 (2009) p. 157). 15-20% of the emerald world production comes out of this mine (Behling, 2009).

The mine covers an area of 1 square km.
Emerald crystals of very high quality are extracted from quartz lenses.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

8 valid minerals.

Detailed Mineral List:

Beryl
Formula: Be3Al2(Si6O18)
Reference: Behling, S. & Wilson, W.E. (2010) The Kagem Emerald Mine, Kafubu Area, Zambia. Mineralogical Record, 41: 59-67
Beryl var: Emerald
Formula: Be3Al2(Si6O18)
Reference: Behling, S. & Wilson, W.E. (2010) The Kagem Emerald Mine, Kafubu Area, Zambia. Mineralogical Record, 41: 59-67
'Chlorite Group'
Dolomite
Formula: CaMg(CO3)2
'commodity:Gemstones'
Reference:  
Magnetite
Formula: Fe2+Fe3+2O4
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Spessartine
Formula: Mn2+3Al2(SiO4)3
Talc
Formula: Mg3Si4O10(OH)2
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Group 5 - Nitrates and Carbonates
'Dolomite'5.AB.10CaMg(CO3)2
Group 9 - Silicates
'Beryl'9.CJ.05Be3Al2(Si6O18)
var: Emerald9.CJ.05Be3Al2(Si6O18)
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Spessartine9.AD.25Mn2+3Al2(SiO4)3
Talc9.EC.05Mg3Si4O10(OH)2
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Spessartine51.4.3a.3Mn2+3Al2(SiO4)3
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Six-Membered Rings with borate groups
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Talc71.2.1.3Mg3Si4O10(OH)2
Unclassified Minerals, Rocks, etc.
Beryl
var: Emerald
-Be3Al2(Si6O18)
'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
H PhlogopiteKMg3(AlSi3O10)(OH)2
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H TalcMg3Si4O10(OH)2
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
BeBeryllium
Be BerylBe3Al2(Si6O18)
Be Beryl (var: Emerald)Be3Al2(Si6O18)
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
C DolomiteCaMg(CO3)2
OOxygen
O BerylBe3Al2(Si6O18)
O DolomiteCaMg(CO3)2
O Beryl (var: Emerald)Be3Al2(Si6O18)
O MagnetiteFe2+Fe23+O4
O PhlogopiteKMg3(AlSi3O10)(OH)2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O SpessartineMn32+Al2(SiO4)3
O TalcMg3Si4O10(OH)2
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mg DolomiteCaMg(CO3)2
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg TalcMg3Si4O10(OH)2
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
AlAluminium
Al BerylBe3Al2(Si6O18)
Al Beryl (var: Emerald)Be3Al2(Si6O18)
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al SpessartineMn32+Al2(SiO4)3
SiSilicon
Si BerylBe3Al2(Si6O18)
Si Beryl (var: Emerald)Be3Al2(Si6O18)
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si SpessartineMn32+Al2(SiO4)3
Si TalcMg3Si4O10(OH)2
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca DolomiteCaMg(CO3)2
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
MnManganese
Mn SpessartineMn32+Al2(SiO4)3
FeIron
Fe MagnetiteFe2+Fe23+O4
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)

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

Mesoproterozoic
1000 - 1600 Ma



ID: 3306691

Age: Mesoproterozoic (1000 - 1600 Ma)

Lithology: Sedimentary

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

Archean
2500 - 4000 Ma



ID: 3193265
Archean crystalline metamorphic rocks

Age: Archean (2500 - 4000 Ma)

Lithology: Orthogneiss/paragneiss

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)
Behling, S. C. (2009): Smaragd-Stufen aus der Gemfields's Kagem Mine in Sambia. Mineralien-Welt 21 (1), 70-77 (in German).
Behling, S. & Wilson, W.E. (2010) The Kagem Emerald Mine, Kafubu Area, Zambia. Mineralogical Record, 41: 59-67

Localities in this Region
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Zambia

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