...Brian J. Skinner; Frederick D. Luce Abstract alpha -domeykite, the cubic and low temperature form of Cu 3 As, decomposes at 90 + or - 10 degrees C and approximately 1 atmosphere pressure to beta -domeykite, composition Cu (sub 2.7) As and algodonite, composition Cu (sub 5.2) As. Algodonite has...

... with new finds of domeykite and algodonite. Unusual among these finds has been the discovery of crystals of rammelsbergite and algodonite. Copyright © 1963 by the Mineralogical Society of America 1963 Mineralogical Society of America ...

... pyrobelonite, turtmannite, reppiaite and sarkinite, occur in the main schistosity and in discordant veinlets. Other accessory minerals include crednerite, pennantite, barite, pyrite, chalcopyrite, bornite(?), native copper and algodonite. Quaternary weathering resulted in the formation of birnessite...

... are olivenite, malachite, gilmarite, cornubite, connellite, theoparacelsite, brochantite, cuprite, native copper, algodonite, and domeykite. Lapeyreite occurs in geodes of cuprite (0.5 mm diameter) as aggregates formed by perfect elongate rectangular crystals (up to 0.2 × 0.05 × 0.01 mm in size), acicular...

..., cuprite, native copper, native silver, native silver containing 2 % of mercury, domeykite, djurleite and algodonite. It forms aggregates (0.2 mm diameter) consisting of pseudooctahedral crystals (50 μm maximum dimension). The crystals are red, brownish red. The mineral is tetragonal, I 4̄, a = 7.727(7) Å...

..., cuprite, domeykite, algodonite and native copper. It forms aggregates (1mm diameter) consisting of perfect crystals (0.5 × 0.15 × 0.1 mm maximum dimension). The bottle-green crystals are elongated along a, slightly flattened on {010}, and have a good cleavage on {001}. They are not twinned. The mineral...

... and the “ledouxite” of Richards. The phases identified include α-domey-kite, β-domeykite, algodonite, arsenical copper, rammelsbergite, pararammelsbergite, and niccolite. Sealed silica tube studies in the system Cu-Ni-As at 510 ± 5°C show negligible solubility of copper in the nickel arsenides and nickel...

...L. S. Ramsdell Abstract Domeykite, algodonite and whitneyite are usually considered as definite minerals, and have been assigned the formulas Cu 3 As, Cu 6 As and Cu 9 As, respectively. However, various investigators have questioned the existence of these compounds, and have reported...

... volume. Celsian is classified as an alkali feldspar on page 82 and 126; however, Ba is an alkaline earth. Algodonite, Cu 6 As, and allargentum, Ag 7 Sb, have only two crystallographic sites, so that the formulae are misleading. Members of the kaolin and serpentine groups have a 1:1 layer structure...

... system is based upon the essential elements of rotation symmetry, whereas the Bravais lattice is based upon elements of translation. Therefore, the statement on page ix “trig. = trigonal (rhombohedral)” is wrong: a serious error. The chemical formula of algodonite is given as Cu 6 As, which means...

... to and underneath the village of Mohawk, ~14 miles north-northeast of Houghton, Michigan, and is well-known to mineral collectors for the occurrence of ‘mohawkite’, a mixture of copper and nickel arsenides consisting primarily of domeykite (Cu 3 As), algodonite (Cu 6± x As) and arsenical copper with rammelsbergite...

... is associated with olivenite, cornubite, connellite, clinotyrolite, cuprite, native copper, algodonite, domeykite, and others at the Roua copper occurrences, Var valley, Alpes-Maritimes area, France. Type material is in the Natural History Museum of Geneva, Switzerland. The new mineral name is for Swiss...

... for the synthetic analog (PDF 15–0014). The mineral, which is dimorphous with gerhardtite, occurs within geodes of cuprite at the old Cu mines of Roua, Alpes-Maritimes, southeastern France. Other associated minerals are native copper and silver, algodonite, domeykite, connellite, olivenite, malachite...

... the associated minerals are cuprite, native copper and silver, algodonite, domeykite, koutekite, olivenite, kolfanite, janggunite, and malachite. The type material from Roua is in the Muséum d’Histoire naturelle de Genève in Geneva, Switzerland. According to J.D. Grice, Chairman of the CNMMN, the name...

... and aragonite, which consists of copper, cuprite, domeykite, algodonite, koutekite, and gold. Associated minerals are: cuprite, copper, malachite, trippkeite, olivenite, and algodonite. General appearance : Aggregates (up to 2 mm in diameter) formed by small crystals up to 0.15 × 0.08 × 0.02 mm...

..., domeykite, djurleite, and algodonite as a supergene product in small geodes in a calcite, dolomite, and aragonite gangue at the Roua copper deposit, Var Valley, Alpes-Maritimes department, France. The new mineral name is for Ekkhart Tillmanns (b. 1941) of the Institute of Mineralogy and Crystallography...

..., fluorapatite, turtmannite, sarkinite, barite, pyrite, chalcopyrite, bornite(?), native copper, and algodonite. Quaternary weathering resulted in the formation of birnessite, takanelite, nsutite–ramsdellite, hollandite, manganite, pyrolusite, cuprite, and malachite. Arsenate and vanadate species are easily...

..., trippkeite, olivenite, and algodonite. The new mineral name is for Dr. Radovan Černý, crystallographer at the University of Geneva. Type material is in the Department of Mineralogy of the Natural History Museum of Geneva. E.S.G. A.C. Roberts, M.A. Cooper, F.C. Hawthorne, A.J. Criddle, J.A.R...

.... Associated minerals are: cuprite, copper, silver, algodonite, domeykite, malachite, connellite, olivenite, theoparacelsite and gerhardtite. Locality : The old copper mines at Roua, Alpes Maritimes, France. It has been identified also from the Sterling Hill mine, Ogdensburg, New Jersey, U.S.A...

... dome, Alpes-Maritimes area, about 50 km from Nice, France. Occurrence : Associated minerals are: dolomite, calcite, aragonite, copper, cuprite, domeykite, algodonite, koutekite, gold, silver, olivenite, cornubite, clinotyrolite, connellite, brochantite, malachite, trippkeite, pharmacosiderite...