Blackhawk Mines Corp.
The Big Bear Gold Claims - San Bernardino County, California
Big Bear Location and History
This Big Bear Claims lie in southwestern San Bernardino County
about 30 miles northeast of San Bernardino on the north east side
of the San Bernardino Mountains The Big Bear claims presently
cover an area of about 1440 acres or about 2.5 square miles, near
Lucerne Valley, CA and currently consists of 9 claims.
San Bernardino County is the largest County in California, and in
fact the largest County in the United States. It is an intensely
mineralized area, with records indicating more than 250 mines
recorded in the area. Commodities from industrial minerals to
gold and silver have been produced since the mid 1800s and still
form a large part of the local economy, therefore the governments
and agencies are generally mining friendly. The area remains an
important cement and industrial production area.
The area has been known as the Blackhawk Mining district in most
reports. The district was organized in 1870, when an English
concern organized the Santa Fe group in 1890 to work the area on
a large scale, but work stopped soon afterward and prospecting
was minor during the early 1900s. The Santa Fe group was
re-opened in 1921 and operated continuously until 1940. In this
last operating phase the production amounted to a reported
Mining in California
Based on the U.S. Geological Survey's (USGS) preliminary data for
2007, California ranked third behind Arizona and Nevada in
non-fuel mineral production, accounting for approximately 6.3% of
the nations' total. The market value of mineral production for
California was $4.3 billion. California produced about 30
different industrial minerals during the year.
California led the nation in the production of sand and gravel,
portland cement, diatomite and natural sodium sulfate, and was
the only producer of boron and rare earths. The state ranked
second behind Florida for masonry cement. The only metals
produced were gold and silver.
California ranked 6th in gold production out of nine states that
reported for the year. Other minerals produced include common
clay, bentonite clay (including hectorite), crushed stone,
dimension stone, feldspar, fuller's earth, gemstones, gypsum,
iron ore (used in cement manufacture), kaolin clay, lime,
magnesium compounds, perlite, pumice, pumicite, rare earths,
salt, silver, soda ash, and zeolites. There were about 660 active
mines producing non-fuel minerals during 2007. Approximately
10,000 people are employed at these mines and their processing
Mining Phase 1
The phase 1 evaluation plan already underway, involves resampling
and mapping earlier reported zones for which original data is no
longer available, while seeking extensions of alteration that may
have been ignored by earlier workers due to lower than economic
grades at the time. If phase 1 work provides the results we
believe it will, Phase 2 will be put in play. Phase 2 will
involve drilling and bulk sampling of mineralized areas in order
to design an appropriate recovery system, and simultaneously
develop the detail information required for mine permitting.
Geology and Ore Deposits
The area is underlain by granitic rocks, mica schist, gneiss, and
a limestone breccia belt. A mineralized zone known as the
Arlington-Santa Fe lode occurs in a thrust fault that strikes
west and dips north. The historic ores consisted of
hematite-bearing fault gouge in limestone breccia. Several ore
bodies were reported to yield up to one ounce of gold per ton.
The ore zones were reported to be up to 75 feet thick and 1000
feet long, with altered weaker mineralization in the host rocks.
The carbonate host rocks that slid off the mountain contain
naturally crushed vein mineralized rock which has been a target
for gold exploration for many decades. In the late 1970s, an
exploration program of 61 drill holes, hundreds of feet of bull
dozer trench sampling and extensive geochem surface sampling
reported broader mineralized than had been noted before.
This exploration showed broad areas of gold mineralization
contained in the landslide. Estimates showed the areas to contain
up to 80 million tons of mineralized material at gold grades of
approximately .03 oz/ton, and silver grades around .25 oz/ton.
This shows a gross potential of 2 to 3 million ounces of gold and
10 to 20 million ounces of silver.
Gold values of the late 1970s (approx $350/oz gold and $15 oz/ton
silver) did not make the project economically interesting at the
time. However, the current gold and silver prices, at plus
$1700/oz gold and Silver in the mid $30s/oz, cast the economics
in a very favorable light