paramelaconite

paramelaconite

[¦par·ə·mə′lak·ə‚nīt]
(mineralogy)
A black tetragonal mineral composed of cupric and cuprous oxides, occurring in pyramidal crystals.
References in periodicals archive ?
In the same small zone in the Cumbres lugar of the Ojuela mine which produced the claringbullite, a few specimens of tenorite pseudomoiphs after paramelaconite were found as microcrystals, as well as brochantite.
For sophisticated collectors, being able to see the world's best Bisbee paramelaconite, a 6-inch specimen, had to be one of the major treats of the show.
The finest known examples of a number of supergene copper minerals were found at Bisbee: antlerite, bisbeeite, brochantite, chalcoalumite, claringbullite, conichalcite, crednerite, cuprite, delafossite, graemite, nantokite, paramelaconite, paratacamite, rosasite and spangolite.