rosasite


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rosasite

[′rō·zə‚sīt]
(mineralogy)
(Cu,Zn)2(OH)2(CO3) A green to bluish-green and sky blue mineral consisting of a carbonate-hydroxide of copper and zinc.
References in periodicals archive ?
Besides the wonderful Ojuela fluorites the case held Ojuela rosasite specimens with smooth, baby-blue rosasite spheres to 4 cm diameter, some with thin, water-clear calcite crystals.
The world's best specimens of paradamite and kottigite/parasymplesite have also been found there, as well as superb specimens of aurichalcite, scorodite, hemimorphite, rosasite, wulfenite and other minerals.
the spherical habit of adamite, rosasite, natrolite, etc.
Some specimens show tiny, pale green, rice-grain crystals of smithsonite, hemimorphite microcrystals, and deep green spots of rosasite.
Vein Minerals Adamite Goethite Arsenopyrite Gold Austinite Hemimorphite Barite Malachite Beudantite Mimetite Calcite Smithsonite Cerussite Sphalerite Chalcopyrite Plumbojarosite Chlorargyrite Pyrite Chrysocolla Rosasite Conichalcite Tetrahedrite Fluorite Willemite Galena Wulfenite
Allan Young's case of 35 impeccably tasteful thumbnails from Idaho localities, many of them self-collected, was noteworthy, as was Tom Hughes' case which was entirely filled with self-collected things, including a wide, beautiful, baby-blue Silver Bill mine, Arizona rosasite and a terrific thumbnail of willemite ("troostite") from the Sterling Hill mine, New Jersey.
The first is an oxidized zone in brecciated dolomite where well-developed, transparent, tan to gray cyclic twins up to 2 cm across occur with rosasite on broken rock fragments.
A very rare secondary mineral found in limonite of the Adolf section, rosasite occurs as green, globular aggregates up to 1 mm in tiny fissures in massive smithsonite.
Rosasite has been found sparingly as turquoise-blue, 0.
In the western mines (Musonoi, Kamoto), a double carbonate of copper and cobalt (kolwezite) has been found which belongs to the rosasite structural group and contain nearly 20% cobalt (Deliens and Piret, 1980).
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.
The best specimens of aurichalcite we have seen have come from the Hozarco mine, near the village of Pineres, where it is present in the form of attractive groups of needles on iron-stained quartz along with rosasite, hemimorphite, hydrozincite and malachite.