Roll Overs:
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Copyright (c) Steve Brittenham.
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20.6 grams. Iron, IIIAB
TKW 15.5 tons. Fall not observed. Found 1902 in Oregon, USA.
Steve writes:
A type IIIAB iron, Willamette's recrystallized structure is thought to be a
consequence either of having passed too close to the sun, or as the result
of a significant impact-heating event on the parent body. Interestingly,
pieces from one end of the meteorite exhibit the "galvanized" pattern seen
in today's slice, but a small piece supposedly taken from the other end of
the meteorite and on display years ago in the Clackamas County Historical
Museum was more consistent with typical medium octahedrites. Measuring 10
feet by 6½ feet by 4¼ feet, Willamette is Oregon's second (of currently six)
known meteorites, North America's largest meteorite, and the sixth largest
meteorite in the world. Its unusual carved features formed while on the
Earth's surface and have been made famous by the iconic picture of twin
children fully reclined inside the larger cavities.
Photo 1 shows a 20.6 gram slice in an 8¼ x 6¼ inch Riker mount I made to
protect and display it. Photo 2 shows the dimension of this slice (the
ruler is in cm), and because the crystalline structures in irons are so hard
to capture in a single picture, Photo 3 provides an animated gif with eight
images taken at different lighting angles to better show the way
Willamette's "galvanized" pattern changes in appearance depending on how
it's viewed.
In his prior Willamette MPOD submission, Shawn provided an excerpt from
Wikipedia describing this meteorite. Below is some additional information I
was able to find, as well as a bit of elaboration on a few points in the
Wikipedia entry.
Native Americans had long known of Willamette, believing it was delivered
from the Moon to Clackamas as a representative of the Sky People to create a
union between the sky, earth, and water when it rested in the ground and
collected rain in its many crevices. Pooled rainwater was thought to
purify, cleanse, and heal the Clackamas Indians and their neighbors, and
tribal hunters dipped their arrowheads in the rainwater to bless their
upcoming hunts. Today, scientists believe Willamette likely landed on a
great ice dam in what is now Canada or Montana; when the dam breached at
the end of the last Ice Age 13,000 years ago, it created the Missoula Floods
and transported the meteorite on an iceberg for hundreds of miles through
Idaho's Pend d'Oreille region and on to its final resting spot in the
Willamette Valley.
Willamette was "officially" discovered by settler Ellis Hughes in 1902 on
property owned by the Oregon Iron and Steel Company near the city of West
Linn. Recognizing its significance and wanting to claim ownership, Hughes
secretly loaded the meteorite onto a wagon and spent the next three months
using a horse, cables, and a capstan to move the almost 16 ton meteorite
across the three-quarters of a mile to his property. In October of 1903,
the Portland Oregonian wrote of Hughes' discovery, drawing curious crowds to
Hughes' property that paid a twenty-five cent fee to view the meteorite.
One of the visitors was an attorney from Oregon Iron and Steel who noticed
ruts leading from the meteorite to his employer's property. A lawsuit was
subsequently brought to the Oregon Supreme Court who ruled that Oregon Iron
and Steel Company was the legal owner. Two years later while on display at
the Lewis and Clark Centennial Exposition in Portland, it was purchased by
Mrs. William E. Dodge for $26,000 (over $650,000 in today's dollars) and
subsequently donated to New York City's American Museum of Natural History
where it has been touched by an estimated 50 million people during its 105
year stay.
Hughes' initial attempt to steal the meteorite was not the only contentious
aspect of Willamette's history. Oregon's Confederated Tribes of the Grand
Ronde Community still revered the meteorite and wanted to use it in their
ancestors' sacred ceremonies. In 1999 they filed a Native American Graves
Protection and Repatriation Act action against the American Museum of
Natural History, demanding the return of their Tomanowos (meaning "heavenly
visitor"). In 2000 the museum responded with a federal lawsuit against the
Grand Ronde seeking a declaratory judgment in its favor. But later that
year before the case was actually heard, both parties reached an agreement
that the museum would keep the meteorite on display but never again cut it
(a 28 pound crown section had been removed in 1997 and traded to the
Macovich collection in exchange for 14 grams of a Martian meteorite); in
return, ownership was transferred back to the Grand Ronde and tribal members
were granted annual visits to conduct private rituals with Willamette.
Yet controversy surrounding Willamette didn't stop there. In 2007, Oregon's
Congressional representative John Lim introduced a resolution demanding its
return to Oregon (this was the second time congressional action was
solicited - in 1991, 38,000 student signatures in Washington and Oregon
resulted in five students giving testimony that resulted in Oregon senator
Bob Packwood submitting an unsuccessful bill also demanding its return).
Not having been consulted regarding this resolution, the tribes went on
record expressing their preference for the current arrangement with the
museum, and as a result no action was taken. But later in that same year a
Bonham's auction was planned for the Macovich Collection's 28 pound piece of
Willamette. Claims of insensitivity by the Grand Ronde and an editorial in
Portland's Oregonian newspaper that asserted the tribes would take legal
against the new owner caused the piece to be withdrawn from auction despite
a subsequent retraction and apology by the newspaper after the Grand Ronde
had disavowed the article as not representing their views (and as a
consequence of the failed auction attempt, collection curator Daryl Pitt
filed an unsuccessful lawsuit in the Oregon District Court against the
newspaper).
Today, visitors can still view and touch the massive meteorite in New York
in the American Museum of Natural History's Dorothy and Lewis B. Cullman
Hall of the Universe. But actual material for sale is generally scarce and
commands high prices when available. |
Click to view larger photos #1
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Found at the arrow (green or red) on the map below
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Herbert 7/18/2017 10:45:26 PM |
Actually, 15.5 metric tons are 15.500 kg. :) |
Steve Brittenham 7/15/2017 9:10:16 AM |
Hi Herbert. Nice catch! I don't know where I came up with that number. 15.5 tons works out to be 14061 kg. And the MetBul just lists it in tons anyway. Guess I have some work to do today to remake the matte. And since you can't tell that the background was the picture of Willamette on the cart before they moved it, I now have a reason to fix that too. Thanks!! |
Herbert 7/15/2017 1:10:53 AM |
Nice display for a nice slice, Steve! But the TKW viven on the display (61.4 kg) seems to be incorrect. |
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