Reaction pathway and kinetics of the thermal decomposition of synthetic brochantite
, Journal of thermal analysis, 49: 1467-1475.
Equilibrium diagrams show that atacamite is stable in saline waters at Spence (Leybourne and Cameron 2008), and an antipathetic relationship between S[O.sub.4] and Cl in these waters suggest that brochantite
is currently being replaced by atacamite (Cameron et al.
Oxide mineralogy consists principally of brochantite
and chrysocolla occurring as disseminations, veinlets and as open-space fillings in breccias.
Researchers blamed antlerite's presence on acidic rain, dew, fog and particulates, which made the statute's surface too acidic for brochantite
to remain stable, says Robert Baboian, a corrosion scientist at Texas Instruments, Inc., in Attleboro, Mass., who studied the statute's patina.
Colorless, transparent, complex crystals (to 2.5 mm) of anglesite occur with brochantite
, caledonite, chlorargyrite and linarite in cavities at the Reward mine.
It consists mainly of brochantite
and a basic copper chloride called atacamite, CuCl.sub.2..3Cu(OH).sub.2.
Other minerals found there include the sulfide minerals chalcopyrite, galena, glaucodot, marcasite, pyrite and sphalerite, as well as anglesite, barite, brochantite
, "nail-head" calcite, devilline, dolomite, linarite, malachite, quartz, schulenbergite, serpierite, smolyaninovite and wroewolfeite.
Is Hauy's "cuivre sulfate" then chalcanthite, brochantite
It is surprising to see Fairfield phosphates at this early date, as well as cyanotrichite and brochantite
from the Last Chance mine (today known as the Grandview mine) in the Grand Canyon, Arizona.
The effervescence of malachite in hydrochloric acid distinguishes it easily from the associated copper minerals brochantite
Associated with this material were atacamite, brochantite
, claringbullite, gerhardtite and considerable amounts of connellite.