An overview of vis-nir-swir field spectroscopy - Spectral International

ARSENATES
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Supergene
Secondary (supergene) zones carry chalcocite, covellite and other Cu2S minerals
(digenite, djurleite, etc.), chrysocolla, native copper and copper oxide, carbonate
and sulphate minerals. Oxidized and leached zones at surface are marked by
ferruginous “cappings” with supergene clay minerals, limonite (goethite, hematite
and jarosite) and residual quartz. Panteleyev, A. (1995):
Minerals include: antlerite, bisbeeite, brochantite, chalcoalumite, claringbullite,
conichalcite, crednerite, cuprite, delafossite, graemite, nantokite, paramelaconite,
paratacamite, rosasite and spangolite, aurichalcite, connellite, cyanotrichite,
malachite and shattuckite are additional supergene copper. Those available in
the database are plotted in this section.
The best way to display the variations in the supergene environment is by group.
The following plots are divided into copper carbonates, chlorides, arsenates,
phosphate, silicates and sulfates.
CHLORIDES
Figure 43 - Copper chlorides includes
atacamite, connellite, and cumengite.
ARSENATES
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PHOSPHATES
Figure 44 - Copper phosphates include
libelhenite, pseudomalachite, and
turquoise.
Figure 45 - Copper arsenates
include bayldonite, chenevixite,
conichalcite, clinoclase and
olivenite.