[Rockhounds] WAS: Mitchell maps... now: a true book in Idaho
DonH
donhalterman at verizon.net
Thu Jul 12 20:33:44 PDT 2007
Dan Hanks wrote:
> I too have some disappointments with the book, however...
I certainly agree that a lot of guide books are terrible. However I
would like to point out a great book experience I had just this morning!
As I was taking a "vacation" and cruising around the St. Joe Forest in
north central Idaho, I was trying to find a place we had visited on a
field trip. All those dirt roads look the same. As I crested a rise
literally in the middle of nowhere, I saw a senior citizen bent over in
the road. Now where did she come from? Her husband was in a van
further up the road, I found out. She was looking for garnets too! She
gave me a little one off the ground. This wasn't the formation I
remembered, but it didn't hurt to start looking while I was here. I
drove further up the road, trying to get to a peak called Castle Rock,
but the road became too bad for my car to take. I turned around and
found some compact schist on the roadside, which contained small garnets
when hammered open, but nothing I wanted to keep. However, when I got
out and took a look around the foundations of the former fire lookout
tower, I found a golf-ball-sized garnet in a loose, very micaceous
schist. It did not appear to come from any of the local rock, but
again, the area seemed as if it had been heavily worked and filled to
make the road passable. I saw nothing else even close to that.
As I approached their mega-van, they were stopped in the road eating
lunch. I showed them my large garnet. Then they said they were going
to look for kyanite next; they had tried already but failed. I
scratched my head and commented that the rock around here didn't appear
that it could contain any significant kyanite. I should also point
out that the area has been metamorphosed, intruded, folded, lifted, and
scrunched, to the point where you might find a completely different
facies a few hundred feet away; anything is possible. And so it was
that they pulled out one of Lanny Ream's books! Well I couldn't argue
with that. The map was a primitive line drawing, but it did give 1/10th
mile intervals for where the minerals would be. I told them they should
just keep eating lunch--after they let me get by--and I would go up to
the intersection, zero my odometer, and come back 0.8 mi. to where the
kyanite outcrop was supposed to be, and they could find me when they
were done. Well, it turned out the outcrop was about 30 ft. from where
they were already parked! It certainly looked like a different rock
than most of what we had seen along that road. I tried to call Lanny
for advice--I guess we weren't *that* far from the nearest tower--but
the cell signal kept breaking up. So I got out with my tools and began
to look for telltale lath-like crystals, which I expected to be small.
I think those folks had been expecting deep blue knife-sized blades of
kyanite like they had seen in rock shops or from other sites. Well, to
make the story short, I did some exploring and found what they were
looking for. By this time they had wandered over from the van, with
their granddaughter. To our happy surprise, there were sky-blue
crystals, long and thin, up to 30mm, in one layer of the rock. I showed
the granddaughter an accordion-folded piece of rock, showed them the dip
angle and the foliation layers, and pointed out the thick, crumbly
strata of dark mica that was right below the kyanite. Fortunately the
formation was very clearly foliated and it was easy to chisel sideways
into the mica and pry off small plates of the kyanite-containing rock.
I only took a few for myself, since I am trying to off-load specimens,
not obtain them; the best piece I collected was a micro matrix specimen
of perfectly transparent, terminated, aqua blue kyanite, perhaps 2mm
long, and fantastic under the 10x loupe. My new friends appreciated
micros, but were happy to have their larger, thumbnail sized blue
beauties in white matrix. We each had a handful, which is all any of us
wanted. There are still plates of blue kyanite crystals there to be
had; unfortunately, given the remoteness of the locality, they will
probably weather out long before most of them are collected.
It is nice to get back to the joys of simple collecting. After a number
of years it is easy to become jaded. However this family was excited by
their find, and of course it is always great to see a youngster having
fun and appreciating the blue-on-white crystals; and we all enjoyed the
view from 6,000 ft. and a cloudless sky, with enough heat to melt the
remaining pockets of snow (!) but not enough to be terribly hot. It
always pays around here to talk to everyone you meet; I found some nice
samples I would never have known were there, and those folks found
something they knew was there but weren't sure how to get. I've
collected some opaque and translucent white kyanite up to 5cm around
here, but never the pale blue, and I like these much more despite their
size. And of course it was some faith in Lanny's directions that made
me keep looking; if it had been any other guide book, I would have
shaken my head pretty quickly and wished them luck.
If you want to see where we were, using TerraServer or GoogleEarth or
TopoUSA or whatever, check out some UTM coordinates: datum NAD27 CONUS,
grid 11T, Easting 0573872, Northing 5205958 . It's nice to have
specific grid coordinates, but this outcrop was really 0.8 miles from
the turnoff!
Best,
Don
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