Faye and I left Tennessee mid-July
for another Roving Rockhounds trip. This time we were to join the group
in Bancroft, Ontario for a series of digs in sites around the Bancroft
area beginning July 19th. We chose to spend a couple of days on the way
up in New York State trying our hand at finding those Herkimer Diamonds.
At the recommendation of our RR
trip leader, David Millis, who is a native of northern Pennsylvania and
who authored a book on rockhounding in New York, we went to Crystal Grove
Diamond Mine and Campground north of St. Johnsville. Here we could trailer
camp and dig for Herkimers both. So, Saturday morning we left the comfort
of our trailer (a hot day was promised) and entered one of the three pits
available for digging. We had arrived early enough the day before to check
out the pits and talked to a father and son from Massachusetts who had
been there a couple of days already. We chose to dig in the closest pit
along with the son, while the dad continued in the next closest pit. A
few other diggers did show up during the day, but, weekend or not, crowding
was not the issue. Hard rock was the issue, as we'd been warned. I had
my complete arsenal of tools and few were not put to use. During the morning
we busted rocks and boulders and found some small vugs with crystals.
As we had also been told, most all crystals were well attached in matrix
(dolomitic limestone) and the loss rate with the rock busting technique
was high. After lunch we took the Arkansas pry bars to some layers of
weathered limestone in the pit floor where the son had had some luck earlier.
Here the rock was not quite so solid as the wall rock. We were able to
pry up slabs of this material and many had crystal-lined vugs. Rock busting
and cobbing these pieces wasn't quite so damaging to material in the vugs.
No large crystals were seen however, although some might qualify as "Herkimers."
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HERKIMERS...click
on photo to enlarge.
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Thinking we
might never be in the area again, we decided to try another location
on Sunday. We drove about thirty miles west to Middleville, NY,
and entered another world of Herkimer digging at the Herkimer Diamond
Mine (and KOA Campground). Here, rock digging had been taken to
a level of Disneyworld, complete with an introductory film hosted
by puppets. Attendants in yellow uniforms waited on you in the rock/gift
shop, or sold you refreshments should you want to take a break.
We had arrived around 9:00 AM during a thunderstorm. After sitting
through the film, the rain began to let up and we headed for the
two pits. The place was crawling with rain-soaked adults and children,
franticly turning over rocks and banging away with their little
hammers that were either bought at the shop, or rented there. The
hammers were yellow. We joined the crowd.
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I soon noticed a guy doing
some serious damage to layers of rock along the edge of the pit.
By the time I had sidled over his way, he had either drawn a bunch
of on-lookers or was part of a group. He began to show finds to
those in the group. I began to look for room in his area. By the
time I had gotten my pry bars from the truck he apparently had hit
a small pocket and had found a double handful of loose crystals.
Faye and I made our way through the group and began to work just
beyond. I took out a dump truck load of rock slabs and never saw
a descent crystal. The fellow who had been successful came over
and gave us one of his crystals and wished us luck. The group left.
By three o'clock, Faye and I were the only ones left in the pit.
We took out some rock crumbs just to have something. All in all,
it was some experience. Now we know why Herkimers are so expensive
there...puppets don't work for peanuts.
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Monday morning we headed on up
to Ontario. By 4:30pm we were at the Bancroft Campground about four miles
north of the city. It was still hot, no matter that we were in the land
of the north. Some locals said that they hadn't seen such heat in fifteen
years. Still, it proved out to be much cooler than it was in Tennessee,
and we actually were able to sleep a couple of nights without the A/C.
Tuesday morning we met with the
group, which consisted of ten people counting us. There was one couple
from Pennsylvania, one from Michigan, and one from Alabama. There was
a guy from New York as well as Dave Millis, the trip leader. We went to
the Beryl Pit, about forty kilometers east of Bancroft, for our first
dig. This mine is an open pit with an extensive dump area. The pit was
relatively small with tall hard rock walls. From the pit floor various
ones of us extracted beryl, schorl tourmaline, amazonite and cleavelandite
feldspar. Dick Eckerman, the guy from New York was able to break out a
six to eight inch long beryl crystal in its calcite matrix. Most beryls
were a dull brown, but some showed some green color. None had any luster
and were very fragile. The amazonite was nice, but the difficulty of getting
it out meant that the pieces ended up small. The cleavelandite crystals
were well defined, but delicate to handle as they were well weathered.
From the dumps, we found more amazonite and beryl, peresterite pieces,
and some bits of dark purple fluorite in feldspar. We ended up spending
the whole day here.
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| BERYL CRYSTALS (feldspar matrix)...click
on photo to enlarge |
CLEVELANDITE and SCHROL...click
on photo to enlarge |
Wednesday we headed west out of
the campground toward Wilberforce. We were to go to the Richardson/Fisson
mine but when we went to pay our fee at the nearest house, we were told
that the mine was now closed. So, we moved on to a road cut not too far
away and torn into a hard white calcite trying to extract some black hornblende
(flouro-richterite?) crystals. I worked with hammer and chisel long enough
to break out some small chunks and pieces of glossy crystals. Other were
successful in finding cracks and taking out large chunks with sledges,
wedges, truck springs and chisels. One very large boulder was left for
those with the energy and tools to slide it out from the overhanging ledge
of rock. A couple of us went across the road and worked in a bit more
weathered material. I took out a chunk of calcite, biotite and hornblende,
which I trimmed down to a 70-pound piece that I could lift in and out
of the truck. It was here that the driver of a passing vehicle slowed
down, leaned out the window, and yelled out, "Welcome to Ontario."
Nice folks up there.
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| HORNBLENDE CRYSTALS in CALCITE...click
on photo to enlarge |
70 lb chunk of HORNBLEDE,
BIOTITE, and CALCITE...click on photo to enlarge |
After lunch,
we went on to a site known as the Padwell Mine. This was obviously
a little-know location and without Dave we'd never have found it.
It's in thick woods about a hundred yards off a dirt road. The dump
piles were barely distinguishable beneath the overgrowth. I never
saw the pit. We brought out some crumbly calcite chunks with nice
areas of salmon pink and spotted with tiny biotite and pyroxene
crystals. |
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PADWELL MINE CALCITE...click
on photo to enlarge |
Thursday,
we again turned west out of the campground and drove to the Bear Lake
site about forty kilometers distance. Bear Lake isn't what you might expect.
First of all, there's no visible lake. Secondly, if there was, it wouldn't
be Bear Lake. Turning off the main highway, you realize you're on Glamour
Lake Road. There is no Bear Lake. The Bancroft Chamber of Commerce owns
the claim and it's to them you pay the entrance fee. The site is heavily
wooded, but pitted with trenches over a large area. This is not a mine,
but an "occurrence." The rockhound-dug trenches are apparently
reflecting the pattern of dykes lying just beneath the surface. We spotted
a large calcite boulder lying in one of these trenches which was laced
with green apatite crystals. We took possession of this trench. Dick Eckerman
and I worked the boulder and then the trench itself, while Faye and Mikel
Sheasley tried to save all the crystals that were evident in the chunks
Dick and I were handing out. We soon realized that the floor of the trench
was solid calcite and that was likely why the previous workers of this
trench had gone no deeper.
We extended the length of the
trench and continued to find other manageable calcite boulders, all with
apatite crystals of various sizes. Dick found a two-by-two inch crystal
chunk in the float. We were told that these free floaters we were finding
had been freed from the weathered calcite, typically on the underneath
side. While these were a delight to find, those still within the calcite
were of much higher quality, some quite gemmy. We took out many crystals,
although few complete. We learned to be excited to get one termination
on a crystal. Although distribution of the finds involved a three-way
split, our shares were most satisfying, particularly when I got the 2x2
piece. Still, Faye and I decided to give that trench another shot before
we left the Bancroft area.
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| MATRIX-FREE APATITE CRYSTALS...click
on photo enlarge |
APATITE CRYSTAL IN CALCITE
MATRIX...click on photo to enlarge |
Friday we went
to the Silver Crater mine for our morning dig. Here were radioactive betafites,
some green apatite, and very large hornblende crystals and biotite books.
Mikel Sheasley put his geiger counter to use and collected a number of
"hot" betafite crystals. We found some small apatites which
had been altered to a red color due to the radioactivity. In the largest
of the two pits, I managed to free a seven pound terminal end of a hornblende
crystal from most of its calcite matrix. While weathered, all sides were
intact. A photo of the wall of this pit is used in the Peterson Field
Guide to Rocks and Minerals as the illustration for hornblende. Both Faye
and I couldn't resist loading up some very large pieces of biotite from
the dumps down the slope even though the haul up was a struggle.
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| HORNBLENDE CRYSTAL...click
on photo to enlarge |
70 lb. BIOTITE BOOK...click
on photo to enlarge
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After
lunch, we moved on to a nearby road cut and chiseled and wedged
out some chunks and pieces of a fine grained peach-colored calcite.
Here we saw some small, white tremolite crystals and what we thought
were very small embedded blue apatite crystals. |
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PEACHY CALCITE...click
on photo to enlarge |
Friday was the
last day of the Bancroft portion of the Roving Rockhounds trip. They would
continue on further west and then travel down the upper peninsula of Michigan.
We opted to not continue on with the group, but decided to stay in Bancroft
another couple of days.
Dave Millis was
also staying on in Bancroft so he went with Faye and me to a couple of
sites Saturday morning. The first, known as the Quirk Lake Occurrence,
was very near the campground. It was within the roadway right-of way.
It was not a road cut, but a level area that had been dug in a series
of parallel trenches by others before us. Each trench seemed to be a narrow,
elongated pocket lying between feldspar crystal-lined walls of country
rock. About four foot down there was a floor of weathered calcite. At
this level we found small smoky quartz clusters attached to the calcite.
Some of the quartz tended toward amethyst. We collected a lot of feldspar
crystal clusters, some brown apatite crystals, a few small hornblende
clusters, and the quartz. Faye and I would have stayed here longer, but
Dave wanted to show us another location before he left us.
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| FELDSPAR CRYSTALS...click
on photo to enlarge |
BROWN APATITE CRSTALS...click
on photo to enlarge |
We drove on further to the McDonald
feldspar mine. This operation was an underground mine consisting of two
linear shafts and a large vaulted ceiling room accessible from both sides
of the hill it penetrated. The walls and ceilings of the room were decorated
with the pink blushes of the remaining feldspar. From the looks of things,
rockhounds still attempt to mine these feldspar patches. We chose to enjoy
the cool air, and then the protection it provided from a rain shower.
We did rake out some nice yellow calcite from the surrounding dumps.
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| ENTRANCE to McDONALD MINE...click
on photo to enlarge |
McDONALD MINE FELDSPAR...click
on photo to enlarge |
Monday morning we left Bancroft
to begin our trek back home. We spent one night in a state park outside
of Binghamton, NY, and a second in Staunton, VA, where the temperature
had reach 103 degrees that day. Welcome back to the South.
We're considering this trip as
our prospecting trip into the northlands. We hope to go back and concentrate
our efforts in a few spots. We certainly want to spend more time at Bear
Lake. We saw some beautiful glossy black Titanite crystal clusters found
there a couple of years ago. The trick will be to find all these desirable
sites still accessible when we return. The Bancroft Chamber of Commerce
seems to be the place to check with before assuming all is as it used
to be. Geologist Chris Fouts leads tours through the chamber. He should
be able to answer questions of site accessibilty. We missed all of the
Black Flies and most of the mosquitoes by going as late in the Summer
as we did. Still, repellents containing a high percentage of DEET is a
must. The Deer Flies were still around and attacked any moving target.
To beat that, find your digging spot quickly and stay heads down. But,
then that's how you find those treasures isn't it?
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