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Arsentsumebite from
Tsumeb Mine (Ongopolo Mine), Tsumeb, Oshikoto Region, Namibia


Locality type:Mine
Classification
Species:Arsentsumebite
Formula:Pb2Cu(AsO4)(SO4)(OH)
Comments:The most easily recognizable occurrence of arsentsumebite is the emerald- to apple-green crusts on mimetite. Arsentsumebite rims these pseudomorphs, which consists of bayldonite and duftite in the inner part of the host mimetite crystals. The finest specimens of all time were found during the excavation of the 6 level in 1988. Surfaces up to 10 by 5 cm are completely covered by brilliant crystals of arsentsumebite. Crystals are always small, being less than 2 mm. (Gebhard, 1999)

In 1990, workings in the upper levels of the Tsumeb mine produced a quantity of extremely fine azurite specimens. Some specimens are associated with green smithsonite, or have been partially replaced by arsentsumebite. The color combinations are striking, as are the crystals themselves, some of which are nearly 10 cm in length, with excellent luster. ( Mineralogical Record, 1991)
Confirmation
Validity:Valid - Type Locality
Associated Minerals Based on Photo Data:
Azurite171
Malachite49
Cerussite42
Bayldonite23
Anglesite20
Quartz12
Duftite12
Mimetite10
Beudantite7
Calcite5
Olivenite3
Ludlockite3
Dolomite3
Aragonite3
Smithsonite2
Philipsbornite2
Tsumcorite2
Wulfenite2
Connellite1
Rosasite1
Brochantite1
Otavite1
Linarite1
Zincgartrellite1
Adamite1
Perroudite1
Zincolivenite1
Covellite1
Tennantite Subgroup1
Data
Mineral Data:Click here to view Arsentsumebite data
Locality Data:Click here to view Tsumeb Mine (Ongopolo Mine), Tsumeb, Oshikoto Region, Namibia
Photo GalleryView Gallery (77 photos)
Data Identifiers
Mindat Occurrence Record ID:1228
Long-form Identifier:1:3:1228:7
GUID (UUID V4):0
References
 
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