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YUMA KING

The Yuma King property is located in the Mojave
Block of the Great Basin. The property consists
of 181 unpatented lode mining claims that cover
an area of approximately 3,620 acres (1465 hectares)
located in the Granite Wash Mountains, La Paz
County, Arizona.
The Yuma King property is located in the Ellsworth
mining district, a district with approximately
70 named mines and prospects, including placer
gold prospects. A variety of mineral deposits
containing copper, gold, silver, lead, zinc
and other metals occur throughout the region
and there was production from many mines and
prospects.
Big Bar has applied the Magma-metal Series
approach to its Yuma King Property in west-central
Arizona. At Yuma King a sequence of intrusions
with magma-metal series petrochemistry similar
to the Sacramento intrusive complex at Bisbee,
Arizona is associated with copper and gold mineralization.
Extensive sampling of the metallization and
the intrusions has allowed a magma-metal series
model assignment to the Bisbee type porphyry
copper-gold-silver skarn replacement MQA45 model
with definite certainty. As a Bisbee model the
possibility exists for high-grade giant sized
copper accumulations by analogy with the grade
tonnage data for the Bisbee type model.
At Yuma King, the Bisbee type copper mineralization
is associated with the footwall environment
of a Stage 3 monzonite porphyry which crops
out extensively throughout the property. In
the vicinity of the Yuma copper mine historical
working, a small portion of the skarn replacement
orebody in the footwall environment of the monzonite
porphyry has been developed and produced 8,728
short tons of 2.64% copper. The exposures in
the Yuma Copper mine historical working indicated
considerable existing copper resource. Subsequently,
Big Bar retained R.H. Russell and Associates
to calculate an indicated 43-101 compliant resource
of a greater than 500,000 tons of combined oxide
and sulfide copper resource at a 3% copper grade.
Initial detailed geologic mapping to the north
and east of the Yuma Mine shows that the monzonite
porphyry unit is more widespread than previously
thought. Thus, emerging new geologic information
indicates that the footwall environment for
copper replacement bodies is more extensive
than existing maps have shown. To obtain additional
information regarding the size and scale of
copper metallization bodies associated with
magnetite replacement bodies, Big Bar commissioned
PRJ to conduct an ultralight born high-resolution
aeromagnetic survey of the Yuma King area. This
survey produced a spectacular result that indicated
numerous additional magnetite bearing copper
replacements might be present in the area. The
magnetic data indicated the size of the magnetite-bearing
Yuma King copper replacement body was much larger
than previously thought, and extends significantly
to the north and east.
A Phase 1 drilling program
was instituted in April 2006 to test the down-dip
and along-strike extension of the copper gold
replacement deposits exposed in the Yuma Mine
that are associated with what is now termed
“the Yuma King magnetic feature”.
The Yuma King magnetic feature covers an area
of at least 2 square kilometers.
THE
FUTURE AT YUMA KING

TECHNICAL REPORT
November
7 2005: NI 43-101 Technical Report for the
Yuma King Property (
8.8MB File Download)
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