MORENCI
Morenci
turquoise was mined in Greenlee County in southeastern
Arizona. Morenci is highly prized for its beautiful
blue colors, which vary from a light to a very
dark blue. Also for its unusual matrix of iron
pyrite or "fool’s gold" that
when polished often resembles silver. The turquoise
was a by-product of the Morenci copper mine
in Arizona. For many years heavy-equipment operators
at the mine would "lunch box" the
high-grade turquoise out. The March 1977 edition
of the “International Turquoise Annual”
states, "Many years ago, while mining for
copper, workers unearthed a large zone of turquoise-bearing
rock and, realizing its value, began working
this zone, neglecting the copper. In order to
ensure copper production continuing, the copper
company that held the mine at the time took
the entire turquoise deposit, which was extensive,
and buried it under thousands of tons of waste
rock from the pit and it is still sitting there.
Uncovering it would be too massive and expensive
a project." From 1956 to 1984 the turquoise
rights were granted to William "Lucky"
Brown who had an extensive mining career that
included working the mine at Villa Grove in
Colorado. The Morenci mine produced high quantities
and was marketed through family operated trading
posts in New Mexico and Arizona. Lucky retired
in 1982 and his sons continued to mine the turquoise
until the lease ended.
The Clifton-Morenci mining district lies eight
miles due north of the Gila and San Francisco
rivers and is near the Arizona-New Mexico border.
The most reliable report states that a miner
named Henry Clifton in 1864 first noted the
area’s mineral resources. Within two years
an Army scout, Robert Metcalf, discovered the
blue and green copper stained out-cropping that
he and a few associates claimed as the famous
Longfellow mine, which went on to produced 20
million pounds of copper. In 1872 a Detroit
mining man named William Church purchased a
group of claims with his Detroit Copper Mining
Company that he had organized. Church then proceeded
to develop mining operations at Morenci, Arizona.
Development work was no easy task. Work was
all done by hand, water was scarce, transportation
was slow, furnace like desert conditions and
Geronimo, who was always a formidable adversary.
But with all of the above problems by 1880 copper
was being produced. Church eventually sold his
claims to Phelps Dodge and Company.
The Morenci mine is the largest copper mine
in the US and produces over 750 million pounds
of copper a year. It stretches for miles across
the landscape. It is thousands of feet from
the top of the mountains to the dug out bottoms
and shades of bluish-green from the richness
of copper that first led miners to the area
are still present. Though today’s southwestern
copper mines produce little turquoise, with
the change of mining methods to crushing and
acid washing the turquoise is destroys in the
copper ore.
The fact that Morenci turquoise is no longer
being mined along with its beautiful blues and
its silver colored matrix make Morenci very
sought after in today’s turquoise market.
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