Metazeunerite [Cu.sup.2+](U[O.sub.2])[.sub.2](As[O.sub.4])[.sub.2] x 8[H.sub.2]O
The first specimens of zeunerite seen in the district were opaque, as they had already been brought into sunlight and had dehydrated (forming metazeunerite).
Other aesthetic species have also been recovered, including fluorite, quartz, goethite pseudomorphs after siderite, and other important species such as cassiterite, ferberite, metanovacekite, uranophane and metazeunerite. Erongo is also the type locality for brabantite, described in 1980.
From 1999 to 2006, some of the finest Namibian aquamarine, schorl and jeremejevite ever seen were collected in the Erongo Mountains, together with aesthetic fluorite, quartz, goethite pseudomorphs after siderite, and other important species such as cassiterite, ferberite and metazeunerite. These minerals made major impacts in the southern African collecting scene and at international mineral shows (Johnston, 2002; Gentry et al., 2004).
It yielded a few uranium species, including metanovacekite, metazeunerite and uranophane.
Metazeunerite Cu(U[O.sub.2])[.sub.2](As[O.sub.4])[.sub.2] x 8[H.sub.2]O
Single crystals and crystal groups of metazeunerite were collected in the uranium pocket described above.
Primary Copper Minerals Secondary Copper Minerals Bornite Tenorite Antlerite Devilline Chalcopyrite Tetrahedrite Aurichalcite Langite Chalcocite Azurite Malachite Covellite Brochantite Metatorbernite Cuprite Calciovolborthite Metazeunerite
Digenite Chalcanthite Olivenite Djurleite Chalcoalumite Parnauite Enargite Chrysocolla Vesignieite Lautite Conichalcite Volborthite Tennantite Cyanotrichite Zeunerite The Supergene Copper Minerals of Bisbee, Arizona
Other new finds from Utah include thin, bladed, centimeter-size crystals of hematite from the Creole mine, Beaver County (John Seibel Minerals); pale blue botryoidal smithsonite, calcite, rosasite, plattnerite and aurichalcite from the Hidden Treasure mine, north of Ophir, Tooele County, available from Jim McGlasson; rich purple crusts of cobaltomenite on rock from the Parco mine group, Thompson District, Grand County, and microcrystals of pharmacosiderite, metazeunerite
and olivenite from the Big Indian mine, near La Sal, San Juan County (Virgin Mining).