Gwayi River Mine, Dete (Dett), Hwange District, Matabeleland North, Zimbabwei
Regional Level Types | |
---|---|
Gwayi River Mine | Mine |
Dete (Dett) | - not defined - |
Hwange District | District |
Matabeleland North | Province |
Zimbabwe | Country |
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Latitude & Longitude (WGS84):
18° 27' 23'' South , 27° 6' 8'' East
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Kamativi Mine | 1,575 (2012) | 16.3km |
Dete | 2,993 (2013) | 30.6km |
Mindat Locality ID:
271917
Long-form identifier:
mindat:1:2:271917:0
GUID (UUID V4):
5139023c-ab1c-4ded-98c3-3355391f6a58
Other/historical names associated with this locality:
Gwaai River Mine
The Gwayi River Mine (formerly Gwaai River Mine) was operated by Messina (Transvaal) Development Corporation from 1970 until 1975, when the mine was closed for economic reasons.
The mine property which occupies an area of about 7kmΒ² immediately south of the confluence of the Gwaii and Siamakuli rivers, lies some 14km north of the main Victoria Falls road. There is a narrow tarmac connecting link.
The mineralized host rocks (metapsammites with stratabound chalcopyrite and pyrite mineralization, oxidized to malachite and azurite) are surrounded by amphibolites and calc-silicate-bearing marbles. The mineralized horizons are interpreted as interflow sedimentary rocks intercalated with mafic metavolcanic rocks (now represented by amphibolites).
There are three ore shoots (Adder, Puff Adder, and Gaboon Viper) in the form of flattened elongated cigar-shaped pods which are restricted to the noses of fold closures, and which plunge parallel to co-linear F1 and F3 deformation structures. There are two types of copper occurrences: in shears and fractures within tremolite and cummingtonite-anthophyllite amphibolites which are enclosed in hornblende amphibolites; and in siliceous and calc-silicate-rich interflow metasedimentary intercalations in the mafic sequence. The sulfides consist of chalcopyrite, pyrite, and pyrrhotite. At the Adder shoot at Gwayi River Mine, coarse sulfides occur together with vein quartz filling breccias in calc-silicate rocks in the nose of a fold. At the Puff Adder shaft, finely disseminated sulfide mineralization is localized within bands of vitreous grey quartzite grading outwards into cross-cutting veins and blows of quartz.
The orebody varies from 3 to 15m in width and has a strike length of 400m, and a down-dip extent of at least 470m. The ores appear to have been metamorphosed at high grades and then retrograded. Ore minerals are intergrown with metamorphic minerals like almandine garnet, cordierite, tremolite, cummingtonite, anthophyllite, and epidote. The ores predate regional granitic events, as they are cut by undeformed granitic intrusions. Bahnemann and Lockett (1979) attributed the origin of the Gwayi River Mine mineralization to βsyngenetic volcanic exhalations next to fumarolic ventsβ or to a βfinal degassing of the lava pileβ. These volcanogenic deposits were then metamorphosed, stretched and deformed into the shape seen today.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
β Almandine Formula: Fe2+3Al2(SiO4)3 |
β Anthophyllite Formula: ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
β Azurite Formula: Cu3(CO3)2(OH)2 |
β Bornite Formula: Cu5FeS4 |
β Chalcopyrite Formula: CuFeS2 |
β Cordierite Formula: (Mg,Fe)2Al3(AlSi5O18) |
β Cummingtonite Formula: ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
β Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
β Malachite Formula: Cu2(CO3)(OH)2 |
β Pyrite Formula: FeS2 |
β Pyrrhotite Formula: Fe1-xS |
β Tremolite Formula: ◻Ca2Mg5(Si8O22)(OH)2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
β | Bornite | 2.BA.15 | Cu5FeS4 |
β | Chalcopyrite | 2.CB.10a | CuFeS2 |
β | Pyrrhotite | 2.CC.10 | Fe1-xS |
β | Pyrite | 2.EB.05a | FeS2 |
Group 5 - Nitrates and Carbonates | |||
β | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
β | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
Group 9 - Silicates | |||
β | Almandine | 9.AD.25 | Fe2+3Al2(SiO4)3 |
β | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
β | Cordierite | 9.CJ.10 | (Mg,Fe)2Al3(AlSi5O18) |
β | Anthophyllite | 9.DD.05 | β»{Mg2}{Mg5}(Si8O22)(OH)2 |
β | Cummingtonite | 9.DE.05 | β»{Mg2}{Mg5}(Si8O22)(OH)2 |
β | Tremolite | 9.DE.10 | β»Ca2Mg5(Si8O22)(OH)2 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | β Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
H | β Azurite | Cu3(CO3)2(OH)2 |
H | β Cummingtonite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
H | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
H | β Malachite | Cu2(CO3)(OH)2 |
H | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
C | Carbon | |
C | β Azurite | Cu3(CO3)2(OH)2 |
C | β Malachite | Cu2(CO3)(OH)2 |
O | Oxygen | |
O | β Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
O | β Azurite | Cu3(CO3)2(OH)2 |
O | β Almandine | Fe32+Al2(SiO4)3 |
O | β Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
O | β Cummingtonite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
O | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
O | β Malachite | Cu2(CO3)(OH)2 |
O | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
Mg | Magnesium | |
Mg | β Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
Mg | β Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
Mg | β Cummingtonite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
Mg | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
Al | Aluminium | |
Al | β Almandine | Fe32+Al2(SiO4)3 |
Al | β Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
Al | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Si | Silicon | |
Si | β Anthophyllite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
Si | β Almandine | Fe32+Al2(SiO4)3 |
Si | β Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
Si | β Cummingtonite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 |
Si | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Si | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
S | Sulfur | |
S | β Bornite | Cu5FeS4 |
S | β Chalcopyrite | CuFeS2 |
S | β Pyrite | FeS2 |
S | β Pyrrhotite | Fe1-xS |
Ca | Calcium | |
Ca | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Ca | β Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
Fe | Iron | |
Fe | β Almandine | Fe32+Al2(SiO4)3 |
Fe | β Bornite | Cu5FeS4 |
Fe | β Chalcopyrite | CuFeS2 |
Fe | β Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
Fe | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Fe | β Pyrite | FeS2 |
Fe | β Pyrrhotite | Fe1-xS |
Cu | Copper | |
Cu | β Azurite | Cu3(CO3)2(OH)2 |
Cu | β Bornite | Cu5FeS4 |
Cu | β Chalcopyrite | CuFeS2 |
Cu | β Malachite | Cu2(CO3)(OH)2 |
Other Regions, Features and Areas containing this locality
African PlateTectonic Plate
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Gwayi River Mine, Dete, Hwange District, Matabeleland North, Zimbabwe