Arthurite

Arthurite was first reported (in 2015) on a specimen in the collection of Walter Veldsman that originated from TCL mineralogist Hans-Josef Lauenstein in the late 1980s. The arthurite was identified by SEM/EDS and occurs as radiating sprays of minute, translucent green crystals (to 100 μm) in association with bendadaite and ludlockite on a tennantite matrix (https://www.mindat.org/photo-668601.html; accessed September 2022).

Bowell and Mocke (2018) described "Green ‘rose-buds’ of Arthurite up to 0.2 mm in size associated with iron bearing Austinite, Tennantite, Chalcopyrite, Mimetite and Quartz" in a "Specimen recovered from Level 46 in the crown pillar zone in 1988…formerly in the collection of Mr De Beer, the former mine manager." The arthurite appears to have been identified by EDS only.

While the occurrence of arthurite at Tsumeb is entirely plausible on geochemical grounds, there is no mention of it in the peer-reviewed literature. Furthermore, standardless EDS analysis would not provide a definitive differentiation from chenevixite.

Questionable status is retained for arthurite pending verification.

austinite (?); bendadaite (?); chalcopyrite (?); ludlockite (?); mimetite (?); quartz (?); tennantite-(Zn) (?)