10), taken in 1999 when the upper part of the oxide zone was being mined, shows the characteristic emerald green of atacamite
, the most abundant copper mineral of the oxide zone (Cuadra and Rojas 2001).
Its jaws use a mystery-element-containing mineral called atacamite
. The mineral increases the strength of the bloodworm's prey-catching jaws.
Stucky and his coworkers recently reported that the tiny jaws of the bloodworm, Glycera dibranchiata, contain the copper chloride mineral called atacamite
, which makes the structures particularly strong (SN: 11/9/02, p.
This year, unfortunately, not very much really new Chinese material was on hand, though Jordi Fabre's lone specimen of atacamite
from a prospect near the Tonglushan mine, Daye, Hubei Province, is quite remarkable.
Within the weathered rocks a range of secondary copper minerals were identified including native copper, atacamite
The worm's version of this strong, lightweight copper chloride mineral, known as atacamite
, may serve as a model for the design of new synthetic materials, says coauthor Galen D.
In the eighties I (RHC) made a number of trips to Chile and on two occasions spent about a week collecting atacamite
specimens in the Farola mine near Copiapo.
as a natural pigment in a south colonial polychrome sculpture from the late XVI century.
Areas lacking the silver coating contained copper corrosion products, including cuprite and atacamite
Minerals associated with cubic magnetite at Balmat, New York Anhydrite [CaSO.sub.4] Arsenopyrite FeAsS Atacamite
[Cu.sub.2][Cl(OH).sub.3] Betekhtinite [Cu.sub.10](Pb,Fe)[S.sub.6] Bornite [Cu.sub.5][FeS.sub.4] Bottallackite [Cu.sub.2]Cl[(OH).sub.3] Calcite [CaCO.sub.3] Celestine [SrSO.sub.4] Chalcocite [Cu.sub.2]S Chalcopyrite [CuFeS.sub.2] Digenite [Cu.sub.9][S.sub.5] Galena PbS Gordaite [NaZn.sub.4]([SO.sub.4])[(OH).sub.6]Cl*6[H.sub.2]O Halite NaCl Hematite [Fe.sub.2][O.sub.3] Malachite [Cu.sub.2]([CO.sub.3])[(OH).sub.2] Nantokite CuCl Namuwite [(Zn,Cu).sub.4][SO.sub.4][(OH).sub.6]*4[H.sub.2]O Paratacamite [Cu.sub.2]Cl[(OH).sub.3] Pyrite [FeS.sub.2] Silver Ag Sphalerite ZnS Talc [Mg.sub.3][Si.sub.4][O.sub.10][(OH).sub.2] Crystal Sizes
Completely Oxidised (top 25-35 metres) - to an iron oxide-quartz fragment gossan/ironstone with local malachite - atacamite
- chrysocolla - cuprite mineralisation.
The deposit consists of secondary copper mineralisation, principally silicates (chrysocollas), chlorides (atacamite
) and, to a lesser degree, compounds of copper manganese known as copper wad (which forms the so-called insoluble copper).