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Transcript
The Choco province is located at West of Colombia, in Pacific
Ocean Coast. The area of interest is located approximately 400km
NW of Bogota, capital of Colombia.
 These province its historically recognized as producer of precious
metals.
 The capital of the province is Quibdo, the province introduced an
incipient road infrastructure, being the Atrato and San Juan rivers
major routes mobilization.
 We provide two applications for mining licences, located in the
town of Istmina, one of them with roads to facilitate their access
and is less than 15 km from the downtown area of this municipality.

Chocó is an area of oceanic crust placed in western Colombia. It is part
of an islands arc which continues along Panamá to Northwest and to the
South along the Pacific shelf to Ecuador territory.
The parts of the islands arc in Chocó are well defined, the subduction
zone is along the Baudó coast, where the Cabo Corrientes and Bahia
Solano peninsulas are wedges of the subducting plate, East of them there
is a wide fault zone, known as Utria fault which looks as a melange zone.
More to the East it is the Baudó range, it represents the outer arc, next to
the East there is the San Juan- Atrato depression, it is the inner basin,
farther to the East it is the inner or magmatic arc, represented by a belt of
Cenozoic intrusions and volcanic buildings. East of it, there is the Western
Cordillera, formerly a transarc basin, now folded by effect of the
tangential shock between the islands arc and the sialic crust, represented
by the Central Cordillera.
The basalts of the obducting plate are typical tholeiites, composed of
plagioclase and clinopyroxene. They are overlain by cretaceous marine
sedimentites of deep sea environment, principally, turbidites and cherts.
The basalts of the subducting plate present more variation in their
compositions; in the peninsulas, where it is possible to observe the
subducting plate, it is possible to find olivine basalts and picrites.
The magmatism of the inner arc is very low in alkalies, the composition of
the volcanites varies between basalt and dacite, the intrusive rocks are
predominantly quartzdiorites with local variations to diorite and gabbro.
The sequence of sedimentary rocks in the intermediate basin
comprehends Eocene detritic and volcano-sedimentary deposits,
Oligocene pelitic, marly and calcareous deposits, Miocene sandstones
and mudstones (Photos 1, 2, and 3) with interbedded conglomerates and
more recent coastal sands and gravels (Photo 4).
Resting on them there are recent volcanic deposits (Photo 5), principally
pyroclastics which develop white or clear gray soils. Those deposits are
very thick at the center of Atrato-San Juan depression.
The tectonics of the island arc are characterized by a system of strike slip
faults N-S direction, specially, in the intermediate basin, the inner arc and
the Western Cordillera.
Northwest of Istmina there is a system of NE-SW faults whose relative
displacement is not clearly stablished.
It is not easy to identify the composition of the volcanic rocks, they
weather to clear colored clays, then it is a low iron content rock, at spite
of the abundance of quartz and different type of silica in the breccias, it
looks that the originary rock must be subsilicic, because the tuffs and
sands look quartz free. Possibly it can be spilitic or lamprophyric
composition.
The volcanic foci are not known, but clearly it is a different and younger
magmatic event than that of the inner arc.
Photo 15: Mining pit near Condoto village.
Photo 16: Sluices in very small scale mining.
Photo 17: Scavator working between Novita and Condoto village.
Photos 18 to 21: Paned gold and platinum.