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YEAR 2003 FEATURED MINERALS
In January 2003, we featured a new find of Aurichalcite
[(Zn,Cu2+)5(CO3)2(OH)6] from White Pine County, Nevada.
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February was another special month, as we featured
Colemanite [Ca2B6O11•5H2O]
from Boron, Kern County, California.
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Although it's considered traditional for the 60th
wedding anniversary, we thought we would celebrate the seventh anniversary
of the Mineral of the Month Club by featuring the hardest known substance
on Earth, diamond (C) in March. This was the 85th mineral we've
featured! Of course, the diamonds we sent Club members are much smaller
than in the photo, and the color isn't quite as bright. (Photo by Jeff
Scovill.)
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April was another outstanding
month as we featured octahedral crystals of magnetite [Fe2+Fe3+2O4]
on matrix from the recent find on Cerro Rico, near Potosi, Bolivia.
The write-up detailed the fascinating properties of this highly magnetic
mineral, found both in Martian meteorites and the human brain.
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May was another special month
as we feature blue fluorapatite [Ca5(PO4)3F]
crystals with wonderfully glassy luster from near the south side of Lake
Baikal in Siberia, Russia. Members had the opportunity to upgrade to
a larger specimen if they wished to.
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JUNE 2003
We will always remember June 2003 as the month Rock & Gem's
article about our Club came out, in their August 2003 issue, and more than
35 new members signed up in a week and a half! By some amazing
coincidence, right after the Club article was an article about the quartz
scepters we sent to Club members in June-- how serendipitous! These are
from the
new find just outside the city of Chihuahua, Mexico. Though smaller in
size (Deluxe members received crystals between 2" by ½" and
3" by 1") than other minerals we've featured, collectors have
been eagerly snapping them up at high prices (typically between $25 and
$50) since they first hit the market last year. The Mineralogical Record
calls them "elegant," with scepter-tips that are much wider than
their stalks. The write-up explained how this and several other wonderful
phenomena occur in quartz crystals. What a month!
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JULY 2003 The
deluge of new members, mainly from the Rock & Gem article, continued
through July, with about 93 new members in a month and a half! July was another outstanding month as
we featured very pretty specimens of bright cherry-red rhodonite [(Mn2+,Fe2+,Mg,Ca)SiO3],
from Conselheiro Lafaiette, Minas Gerais, Brazil. It took several years
to obtain these, and they were worth the wait!
The Brazilian collector was careful to furnish us specimens where at
least one crystal face is evident, since rhodonite specimens with
well-defined faces as quire rare and expensive. Deluxe-size specimens
were a little smaller than our typical Deluxe-size mineral, about
2" by 1½".
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AUGUST
2003 We featured crystals of black tourmaline
from the new find in the Erongo Region, Namibia. These were very
attractive specimens with good terminations.
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SEPTEMBER 2003 We featured something a
little different in the month of September-- the calcite pseudomorphs after ikaite
from the Kola Peninsula, Russia, commonly known as "Glendonites."
Our Deluxe specimens were rounded nodules cut in half and polished to reveal the mineral
inside, and Deluxe members received both halves. Junior members received
rosette specimens, with no matrix.
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Two views of the same
specimen. |
OCTOBER 2003
Our first featured mineral when we started
the Club in March 1996 was pyrite in the form of the near-perfect cubes
from Spain. In October, we featured it again in our 91st month in its
octahedral form, from the exceptional find at the Huanzala Mine, Huanuco,
Peru, source of what the Mineralogical Record calls the "best pyrite
specimens in the world." Club members who already had a fine pyrite
specimen let us know ahead of time, and we skipped sending one this month
to them, added another month to their membership in its place, and still
sent them the monthly write-up so they could read up on it!
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NOVEMBER 2003
We featured the second of two sulfides in a row, sending
outstanding specimens of chalcopyrite from Peru. As you can see from the photos, these
were highly attractive
specimens,
from the Animon Mine, Pasco Department, Peru. On most specimens, the
chalcopyrite is associated with needle quartz or sphalerite and other
sulfide minerals. This was a special month!
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The bottom photo shows a close-up of the
chalcopyrite crystal.
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 Photo
on bottom is close-up of crystals on upper specimen. |
DECEMBER 2003
We closed out another year of wonderful
specimens with peridot, the name for the gem variety of the mineral
forsterite [Mg2SiO4]. The write-up
explained in detail the relationship between peridot,
olivine, and the forsterite-fayalite mineral series. This month's specimens
were on a
heavy grayish-black basalt matrix, and come from the San Carlos Reservation,
Arizona.
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