Otjosondu

NA / Otjozondjupa

•-21.33026, 18.16816View on Map Open in Google Maps

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About this location

Otjosondu is a historic mining site, documented by the USGS Mineral Resources Data System. The mineralization is hosted in Gneiss, within the Passive Continental Margin setting. Reported specimens include Bixbyite, Braunite, Hausmannite, Hollandite, Iron, Jacobsite; logged ore minerals are Bixbyite, Braunite, Hausmannite, Hollandite, Jacobsite. The site was discovered in 1904; production began in 1939.

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Found Here

BixbyiteBrauniteHausmanniteHollanditeIronJacobsitePyrolusite

Geology and deposit

Host rock: Gneiss
Associated rock: Granite
Orebody form: MASSIVE
Tectonic setting: Passive Continental Margin

Ore minerals

BixbyiteBrauniteHausmanniteHollanditeJacobsite

Structure

Complex Folding, Doubly Plunging Synclinorium Southern Limbs Overturned

Alteration

Minor

Mining history

Status: Past Producer
Production size: Small
Discovered: 1904
First production: 1939

Records and references

Cited references

ROPER, H., 1956, THE MANGANESE DEPOSITS AT OTJOSONDU, SOUTH WEST AFRICA. IN SYMPOSIUM DEL MANGANESO, 20TH INTERNATIONAL GEOLOGICAL CONGRESS, MEXICO, 2. P. 115-122. ROPER, H., 1956, P.122.

Data: USGS Mineral Resources Data System, record 10003925 — view the source record

Difficulty

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Location on Map

Coordinates: -21.33026, 18.16816

Nearby rockhounding locations

Elbe Onganja — Azurite, BorniteKhomas · 69 mi
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Matchless — CopperKhomas · 123.1 mi
Okurusu — FluoriteOtjozondjupa · 126.7 mi
Berg Aukas Mine — Descloizite, DolomiteOtjozondjupa · 131.6 mi

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National Audubon Society Field Guide to Rocks and Minerals

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