Located offshore 48 km NW of Lüderitz.
The island has an area of approximately 6.5ha.

A former bird guano deposit worked from 1847 to the 1890s. The South African government managed the harvesting of guano until 1975. Private concessions were leased between 1975 to the 1990s. In 1994, the island was returned to Namibia and guano was again harvested by private enterprise.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ Stercorite (TL)

ⓘ Struvite

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

Detailed Mineral List:

ⓘ Stercorite (TL)

Formula: (NH₄)Na(PO₃OH) · 4H₂O

Type Locality:

References:

Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York.

Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (2000) Handbook of Mineralogy Vol. 4 - Arsenates, phosphates, vanadates. Mineral Data Publishing, Tucson, Arizona.

ⓘ Struvite

Formula: (NH₄)Mg(PO₄) · 6H₂O

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Struvite	8.CH.40	(NH₄)Mg(PO₄) · 6H₂O
ⓘ	Stercorite (TL)	8.CJ.05	(NH₄)Na(PO₃OH) · 4H₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Stercorite	(NH₄)Na(PO₃OH) · 4H₂O
H	ⓘ Struvite	(NH₄)Mg(PO₄) · 6H₂O
N	Nitrogen
N	ⓘ Stercorite	(NH₄)Na(PO₃OH) · 4H₂O
N	ⓘ Struvite	(NH₄)Mg(PO₄) · 6H₂O
O	Oxygen
O	ⓘ Stercorite	(NH₄)Na(PO₃OH) · 4H₂O
O	ⓘ Struvite	(NH₄)Mg(PO₄) · 6H₂O
Na	Sodium
Na	ⓘ Stercorite	(NH₄)Na(PO₃OH) · 4H₂O
Mg	Magnesium
Mg	ⓘ Struvite	(NH₄)Mg(PO₄) · 6H₂O
P	Phosphorus
P	ⓘ Stercorite	(NH₄)Na(PO₃OH) · 4H₂O
P	ⓘ Struvite	(NH₄)Mg(PO₄) · 6H₂O

Other Regions, Features and Areas containing this locality

African PlateTectonic Plate

Namaqua-Natal BeltOrogenic Belt
Southwest African Coastal basinBasin

Atlantic OceanOcean

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

von Bezing, Ludi (2007) Namibia - Minerals and Localities (1st ed.). Bode Verlag GmbH.

Kinahan, Jill., Kinahan, John (2009) “A thousand fine vessels are ploughing the main …” 1Archaeological traces of the nineteenth century ‘Guano Rage’ on the south-western coast of Africa. Australasian Historical Archaeology 27, 43-54.

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