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St Anns Mine (St Anne Mine; St Anne's Mine; St Ann's Mine), Mwami (Miami), Karoi District (Urungwe; Hurungwe District), Mashonaland West, Zimbabwei
Regional Level Types
St Anns Mine (St Anne Mine; St Anne's Mine; St Ann's Mine)Mine
Mwami (Miami)- not defined -
Karoi District (Urungwe; Hurungwe District)District
Mashonaland WestProvince
ZimbabweCountry

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Key
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Latitude & Longitude (WGS84): 16° 42' 6'' South , 29° 46' 9'' East
Latitude & Longitude (decimal): -16.70167,29.76917
GeoHash:G#: ktj0vrt1x
Locality type:Mine
Köppen climate type:Cwa : Monsoon-influenced humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Karoi25,030 (2015)14.5km
Mhangura6,503 (2014)47.5km


Located SE of Miami.
Hydrothermally kaolinized zone in a F-enriched granitic pegmatite intruded in Precambrian staurolite schists (Lomagundi system).
2 meters wide and 250 meters long

Regions containing this locality

African PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


10 valid minerals. 1 (TL) - type locality of valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Extra Lapis English 14:58-59
Beryl
Formula: Be3Al2(Si6O18)
Description: Gem quality.
Reference: Foord, E.E.; Taggert jr., J.E.; Gaines, R.V.; Grubb, P. L.C & Kristiansen, R. (1986): Zimbabweite, a new alkali-lead-arsenic tantalate from St. Anns mine, Karoi District, Zimbabwe. Bulletin Minéralogie, 109: 331-336; Extra Lapis English 14:58-59
Beryl var: Aquamarine
Formula: Be3Al2Si6O18
Description: Gem quality.
Reference: Foord, E.E.; Taggert jr., J.E.; Gaines, R.V.; Grubb, P. L.C & Kristiansen, R. (1986): Zimbabweite, a new alkali-lead-arsenic tantalate from St. Anns mine, Karoi District, Zimbabwe. Bulletin Minéralogie, 109: 331-336; Extra Lapis English 14:58-59
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Colour: Green
Reference: E.E. Ford et al. , Bull. Minéral; , 1986, 109, pp. 331-336.; Bartholomew, D. S. (1990). Base metal and industrial mineral deposits of Zimbabwe. Zimbabwe Geological Survey, Mineral Resources Survey No. 22
Euclase
Formula: BeAl(SiO4)(OH)
Habit: Prismatic
Colour: Blue
Description: Gem quality specimens.
Reference: Cairncross, B. (2004) Field Guide To Rocks & Minerals Of Southern Africa: 98.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Foord, E.E.; Taggert jr., J.E.; Gaines, R.V.; Grubb, P. L.C & Kristiansen, R. (1986): Zimbabweite, a new alkali-lead-arsenic tantalate from St. Anns mine, Karoi District, Zimbabwe. Bulletin Minéralogie, 109: 331-336
'Mica Group'
Reference: Cairncross, B. (2004) Field Guide To Rocks & Minerals Of Southern Africa: 51.
Microcline
Formula: K(AlSi3O8)
Reference: Extra Lapis English 14:58-59
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Extra Lapis English 14:58-59
Quartz
Formula: SiO2
Reference: Extra Lapis English 14:58-59
Quartz var: Amethyst
Formula: SiO2
Reference: Cairncross, B. (2004) Field Guide To Rocks & Minerals Of Southern Africa: 51.
Quartz var: Smoky Quartz
Formula: SiO2
Reference: Extra Lapis English 14:58-59
Topaz
Formula: Al2(SiO4)(F,OH)2
Reference: [www.johnbetts-fineminerals.com]; Extra Lapis English 14:58-59
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Extra Lapis English 14:58-59
'Uvite Series'
Formula: Ca(Mg3)MgAl5(Si6O18)(BO3)3(OH)3(F/OH)
Reference: No reference listed
Zimbabweite (TL)
Formula: (Na,K)2PbAs4(Ta,Nb,Ti)4O18
Type Locality:
Reference: Foord, E.E.; Taggert jr., J.E.; Gaines, R.V.; Grubb, P. L.C & Kristiansen, R. (1986): Zimbabweite, a new alkali-lead-arsenic tantalate from St. Anns mine, Karoi District, Zimbabwe. Bulletin Minéralogie, 109: 331-336

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Zimbabweite (TL)4.JA.40(Na,K)2PbAs4(Ta,Nb,Ti)4O18
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Beryl9.CJ.05Be3Al2(Si6O18)
var: Aquamarine9.CJ.05Be3Al2Si6O18
Elbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Euclase9.AE.10BeAl(SiO4)(OH)
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Topaz9.AF.35Al2(SiO4)(F,OH)2
'Uvite Series'9..Ca(Mg3)MgAl5(Si6O18)(BO3)3(OH)3(F/OH)
Unclassified Minerals, Rocks, etc.
'Mica Group'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
Miscellaneous
Zimbabweite (TL)8.7.10.1(Na,K)2PbAs4(Ta,Nb,Ti)4O18
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Euclase52.2.1.1BeAl(SiO4)(OH)
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Topaz52.3.1.1Al2(SiO4)(F,OH)2
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
Elbaite61.3.1.8Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
'Uvite Series'61.3.1.3Ca(Mg3)MgAl5(Si6O18)(BO3)3(OH)3(F/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
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
Beryl
var: Aquamarine
-Be3Al2Si6O18
Kaolinite-Al2(Si2O5)(OH)4
'Mica Group'-
Quartz
var: Amethyst
-SiO2
var: Smoky Quartz-SiO2
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H EuclaseBeAl(SiO4)(OH)
H TopazAl2(SiO4)(F,OH)2
H ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
H KaoliniteAl2(Si2O5)(OH)4
H MuscoviteKAl2(AlSi3O10)(OH)2
LiLithium
Li ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
BeBeryllium
Be EuclaseBeAl(SiO4)(OH)
Be Beryl (var: Aquamarine)Be3Al2Si6O18
Be BerylBe3Al2(Si6O18)
BBoron
B ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
OOxygen
O Zimbabweite(Na,K)2PbAs4(Ta,Nb,Ti)4O18
O EuclaseBeAl(SiO4)(OH)
O Beryl (var: Aquamarine)Be3Al2Si6O18
O BerylBe3Al2(Si6O18)
O TopazAl2(SiO4)(F,OH)2
O ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
O KaoliniteAl2(Si2O5)(OH)4
O AlbiteNa(AlSi3O8)
O MuscoviteKAl2(AlSi3O10)(OH)2
O MicroclineK(AlSi3O8)
O QuartzSiO2
O Quartz (var: Smoky Quartz)SiO2
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O Quartz (var: Amethyst)SiO2
FFluorine
F TopazAl2(SiO4)(F,OH)2
NaSodium
Na Zimbabweite(Na,K)2PbAs4(Ta,Nb,Ti)4O18
Na ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Na AlbiteNa(AlSi3O8)
AlAluminium
Al EuclaseBeAl(SiO4)(OH)
Al Beryl (var: Aquamarine)Be3Al2Si6O18
Al BerylBe3Al2(Si6O18)
Al TopazAl2(SiO4)(F,OH)2
Al ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Al KaoliniteAl2(Si2O5)(OH)4
Al AlbiteNa(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al MicroclineK(AlSi3O8)
SiSilicon
Si EuclaseBeAl(SiO4)(OH)
Si Beryl (var: Aquamarine)Be3Al2Si6O18
Si BerylBe3Al2(Si6O18)
Si TopazAl2(SiO4)(F,OH)2
Si ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Si KaoliniteAl2(Si2O5)(OH)4
Si AlbiteNa(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si MicroclineK(AlSi3O8)
Si QuartzSiO2
Si Quartz (var: Smoky Quartz)SiO2
Si Quartz (var: Amethyst)SiO2
KPotassium
K Zimbabweite(Na,K)2PbAs4(Ta,Nb,Ti)4O18
K MuscoviteKAl2(AlSi3O10)(OH)2
K MicroclineK(AlSi3O8)
TiTitanium
Ti Zimbabweite(Na,K)2PbAs4(Ta,Nb,Ti)4O18
AsArsenic
As Zimbabweite(Na,K)2PbAs4(Ta,Nb,Ti)4O18
NbNiobium
Nb Zimbabweite(Na,K)2PbAs4(Ta,Nb,Ti)4O18
TaTantalum
Ta Zimbabweite(Na,K)2PbAs4(Ta,Nb,Ti)4O18
PbLead
Pb Zimbabweite(Na,K)2PbAs4(Ta,Nb,Ti)4O18

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

Paleoproterozoic
1600 - 2500 Ma



ID: 3192199
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 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]

Statherian - Orosirian
1600 - 2050 Ma



ID: 3306232

Age: Paleoproterozoic (1600 - 2050 Ma)

Lithology: Volcanic-sedimentary

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)
Foord, E.E.; Taggert jr., J.E.; Gaines, R.V.; Grubb, P. L.C & Kristiansen, R. (1986): Zimbabweite, a new alkali-lead-arsenic tantalate from St. Anns mine, Karoi District, Zimbabwe. Bulletin Minéralogie, 109: 331-336
Kristiansen, R. (1998): Apropos kontakt med stein i Zimbabwe. STEIN 25 (1), 20-21 [ a historical notice on the found of zimbabweite]
Cairncross, B. (2004) Field Guide To Rocks & Minerals Of Southern Africa
Extra Lapis English 14:58-59


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