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Goanikontes Claim, Goanikontes, Arandis Constituency, Erongo Region, Namibiai
Regional Level Types
Goanikontes ClaimClaim (Active)
GoanikontesFarm
Arandis ConstituencyConstituency
Erongo RegionRegion
NamibiaCountry

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Latitude & Longitude (WGS84):
22° 41' 16'' South , 14° 50' 29'' East
Latitude & Longitude (decimal):
Type:
Claim (Active) - last checked 2023
KΓΆppen climate type:
Nearest Settlements:
PlacePopulationDistance
Swakopmund25,047 (2018)32.3km
Arandis4,507 (2012)32.8km
Walvis Bay52,058 (2017)45.7km
Mindat Locality ID:
7864
Long-form identifier:
mindat:1:2:7864:4
GUID (UUID V4):
10880b2f-febe-437f-b4f2-e05ad59f2db7
Other/historical names associated with this locality:
Etango


A uranium claim (mine) ca. 4 km SE of Goanikontes and ca. 27 km E of Swakopmund, at a distance of ca. 40 km from the RΓΆssing Uranium Mine.

Famous for excellent boltwoodite specimens (often with erroneous locality labeled as "RΓΆssing" - https://www.mindat.org/loc-3085.html - or "Langer Heinrich" - https://www.mindat.org/loc-194264.html ).

Apparently now (after exploration restarted in 2010) called Etango (
https://www.world-nuclear.org/information-library/country-profiles/countries-g-n/namibia.aspx )

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


11 valid minerals.

Detailed Mineral List:

βœͺ Boltwoodite
Formula: (K,Na)(UO2)(SiO3OH) · 1.5H2O
Habit: Needles to 1 cm, as radial, compact spheres (rare)
Colour: yellow to orange-yellow
Fluorescence: Reddish orange in longwave, no fluoresence in shortwave
Description: Spherelike aggregates up to 3 cm in diameter have been found
β“˜ Calcite
Formula: CaCO3
β“˜ Coffinite
Formula: U(SiO4) · nH2O
β“˜ Cryptomelane
Formula: K(Mn4+7Mn3+)O16
β“˜ Goethite
Formula: Ξ±-Fe3+O(OH)
β“˜ Gypsum
Formula: CaSO4 · 2H2O
β“˜ Parauranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
β“˜ 'Psilomelane' ?
Description: As a black coating on boltwoodite crystals
β“˜ Pyrolusite
Formula: Mn4+O2
β“˜ Quartz
Formula: SiO2
β“˜ Uraninite
Formula: UO2
β“˜ Weeksite
Formula: K2(UO2)2(Si5O13) · 4H2O

Gallery:

(K,Na)(UO2)(SiO3OH) · 1.5H2Oβ“˜ Boltwoodite
K2(UO2)2(Si5O13) · 4H2Oβ“˜ Weeksite

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
β“˜Goethite4.00.Ξ±-Fe3+O(OH)
β“˜Quartz4.DA.05SiO2
β“˜Pyrolusite4.DB.05Mn4+O2
β“˜Cryptomelane4.DK.05aK(Mn4+7Mn3+)O16
β“˜Uraninite4.DL.05UO2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Gypsum7.CD.40CaSO4 Β· 2H2O
Group 9 - Silicates
β“˜Coffinite9.AD.30U(SiO4) Β· nH2O
β“˜Boltwoodite9.AK.15(K,Na)(UO2)(SiO3OH) Β· 1.5H2O
β“˜Parauranophane9.AK.15Ca(UO2)2(SiO3OH)2 Β· 5H2O
β“˜Weeksite9.AK.30K2(UO2)2(Si5O13) Β· 4H2O
Unclassified
β“˜'Psilomelane' ?-

List of minerals for each chemical element

HHydrogen
Hβ“˜ Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2O
Hβ“˜ CoffiniteU(SiO4) · nH2O
Hβ“˜ GoethiteΞ±-Fe3+O(OH)
Hβ“˜ GypsumCaSO4 · 2H2O
Hβ“˜ ParauranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Hβ“˜ WeeksiteK2(UO2)2(Si5O13) · 4H2O
CCarbon
Cβ“˜ CalciteCaCO3
OOxygen
Oβ“˜ Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2O
Oβ“˜ CalciteCaCO3
Oβ“˜ CoffiniteU(SiO4) · nH2O
Oβ“˜ CryptomelaneK(Mn74+Mn3+)O16
Oβ“˜ GoethiteΞ±-Fe3+O(OH)
Oβ“˜ GypsumCaSO4 · 2H2O
Oβ“˜ PyrolusiteMn4+O2
Oβ“˜ QuartzSiO2
Oβ“˜ UraniniteUO2
Oβ“˜ ParauranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Oβ“˜ WeeksiteK2(UO2)2(Si5O13) · 4H2O
NaSodium
Naβ“˜ Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2O
SiSilicon
Siβ“˜ Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2O
Siβ“˜ CoffiniteU(SiO4) · nH2O
Siβ“˜ QuartzSiO2
Siβ“˜ ParauranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Siβ“˜ WeeksiteK2(UO2)2(Si5O13) · 4H2O
SSulfur
Sβ“˜ GypsumCaSO4 · 2H2O
KPotassium
Kβ“˜ Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2O
Kβ“˜ CryptomelaneK(Mn74+Mn3+)O16
Kβ“˜ WeeksiteK2(UO2)2(Si5O13) · 4H2O
CaCalcium
Caβ“˜ CalciteCaCO3
Caβ“˜ GypsumCaSO4 · 2H2O
Caβ“˜ ParauranophaneCa(UO2)2(SiO3OH)2 · 5H2O
MnManganese
Mnβ“˜ CryptomelaneK(Mn74+Mn3+)O16
Mnβ“˜ PyrolusiteMn4+O2
FeIron
Feβ“˜ GoethiteΞ±-Fe3+O(OH)
UUranium
Uβ“˜ Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2O
Uβ“˜ CoffiniteU(SiO4) · nH2O
Uβ“˜ UraniniteUO2
Uβ“˜ ParauranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Uβ“˜ WeeksiteK2(UO2)2(Si5O13) · 4H2O

Other Regions, Features and Areas containing this locality

African PlateTectonic Plate
Namibia

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

 
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