Golden Grams Of Goodness: Nugget Shooting Stories

[nebulanoodle]

On 1/20/2022 at 5:21 PM, Lanny said:

Old Trenches--A Missed Nugget Opportunity

Wheeeeewww!!! Does this story get me fired up to go prospecting!

[Lanny]

Suction Eddy Gold, Part I

I prospected a river quite a while back. It was far to the north, down in a steep canyon lined with lots of alders, pine, and fir. Rugged slopes led down to the stream, and I was trying to find a spot where I could detect or pan for some of the nice coarse gold the area was known for.

I took a wrong step and got smacked in the face by an alder while trying to get down to what was clearly an active suction eddy during Spring Flood.

The eddy was straight down the mountain slope from where an old placer tunnel went in, about a hundred feet up slope. The mine (called a “drift” mine by the locals) went into the mountain on a bedrock hump, about seventy feet above the river. The Oldtimers had seen the hump and drifted toward it along the up-sloping bedrock that rose from the river, hitting the hump then driving underneath about fifty feet of boulder clay (almost exclusively clay, yet sprinkled with boulders and lesser rock dumped from the long gone Ice Age glaciers). [The mine entrance is still there, but the tunnel is caved in.]

Some modern miners had come in with big equipment and made a road around that bedrock point on the hill, cutting into the bedrock as they widened the road, while slicing across the drift mine entrance.

Now, what a dummy I was--I didn't detect that scraped off bedrock hump where the drift mine had gone in! Instead, I went over to the entrance, and hauled several heavy buckets of material down to the river to pan.

What a miserable time I had getting those buckets down to the river, skidding down that 30 to 40-degree slope covered in broken bedrock and loose cobbles. Fun? Not as much fun as a double root canal, but just about. Still, I was way over the legal-limit for fun.

Every bucket held gold, but only flakes. And, as I was chasing coarse gold, after lugging three five-gallon buckets of clay goo from the mine entrance to the river, I'd had enough fun.

But, since the eddy I’d picked to prospect was exactly below that bedrock hump, I dropped into the spot, a truck-box sized hole high water had cut into the river bank. It was littered with bread-loaf sized cobbles.

I was in my own little enclave down there, and I couldn't be seen from the equipment-trail above, nor could I be seen from up or down the river on my side of the stream.

I had packed down my old VLF detector and a shovel with me. I fired up the detector and scanned the cobbled section. I immediately got a loud signal.

I chucked a load of bread-loaf cobbles into the river and scanned again. The target was still there. Moving the underlying loose stuff, I exposed a nice square nail. What the . . .? That wasn't what I wanted, but square nails were everywhere on that bank!

Well, being the dimwit that I was, I never made the connection this was a good sign (heavies dropping out during flood stage). So, I scanned more bank, got more signals, then gave up detecting because I KNEW every signal was a square nail. (Dumb yes, but I was quite a rookie back then.)

I cleared the rest of the loose stuff from under the cobbles and chucked the stream-run back into a hole (eight-foot deep) in the river. That hole lay downstream from a series of bedrock drops, it being the only calm water in a long stretch. This clue should also have lit up my gold-getting brain, but my rookie mind was a steel trap, and once shut, no helpful gold logic was getting in.

What I found after clearing the overburden was friable rock standing over a layer of soft decomposing bedrock. So, I scraped the shingle-like pieces off and panned it all out. Immediately I had coarse gold in my pan! What the . . .? My rookie brain began to make connections.

All along that eight-foot section of bedrock, there was fantastic, coarse and sassy gold!

Sitting down, I looked at that river eddy excavation. The bedrock, where the eddy had dumped the heavies, rose up into the bank. At that moment, my brain finally made another connection. (Part II to follow)

All the best,

Lanny

[Rick N. MI]

You need to put all those stories in a book. A great read even though I can't hunt for nuggets where I am, I enjoy reading about it.

[Lanny]

Suction Eddy Gold, Part II

My brain at last connected that directly above me was the bedrock hump, and here was steeply rising bedrock trending in the same direction. Talk about a cross-wired brain (and one snapped shut, remember?)!

In hindsight, the eddy exposed a shelf that must have connected to the hump. Of course, there were tons and tons of overburden between me, the rest of that rising bedrock, and the hump. Anyway, my brain at last tuned in, and I scraped the exposed bedrock and sluiced the remaining material. (I had an aluminum river sluice in my vehicle up on the cat-trail. Freighting it down to the river, I had a near-death experience from the header I took while taking what I thought was a short-cut; however, I made it to the river in one piece.)

I started sluicing. The first shovel of dirt produced an instant nugget. It was around two grams, and L-shaped. It didn't even get into the first riffle. It just hit and sat in the header, sparking golden in the summer sunlight.

I sluiced the remaining dirt and recovered chunky gold throughout. It was getting dark, and I didn’t want to leave, but I’ve no love for mountain lions or grizzlies. So, I headed back to the safe, comfortable log cabin I called home in that northern land. (On a side note, I need to mention it had been raining for three days straight prior to my first find on the river. This helps explain upcoming details.)

When I floundered my way downslope through the much safer face-slapping route the next morning, I saw the river had dropped about four inches. Seeing a fresh, soft bedrock edge exposed by the lower waterline, I was suddenly stunned. There, winking in the morning sun, was a nugget! (A little sunbather taking advantage of the new beach so to speak.) My mind, now wide-open to prospecting lore, started calculating what had likely happened at the site.

I reflected that there was consistent gold right up to the boulder clay on the bank where the suction eddy had torn into it. Moreover, that gold was being drug down into the pool. So, I scraped with my shovel out into the pool as far as I could I could, but the bedrock dropped off quite sharply into that eight-feet of water. As well, for any that have scraped off river run, while fighting hydraulic pressure, it's tough-sledding indeed.

In spite of the challenge, the coarse gold that came up from the submerged river-run was spectacular! By the time I'd retrieved all the material I could, I had a quarter-ounce of nice rounded coarse gold, and several nice sassy nuggets to boot.

So, what’s the analysis of that suction eddy gold deposit? Well, those early square nail finds were everywhere because the suction eddy had plucked them from flood-level waters, and the bedrock held them fast. Cleary, the gold was yanked from the flood water along with the nails as well. But, the haunting reality to me now is that a whack of those “square nail signals” were feisty nuggets! This leaves me with the uncomfortable reality that what the heck did I throw into that eight-foot-deep pool as I cleared the overburden?

What the heck indeed. . . .

All the best,

Lanny in AB


[Author's note: I heard the next year that some dredgers went into that pool. One of the mine-workers had seen my truck parked on the trail, had walked down to the river to investigate after I'd left, had seen the suction eddy as well as my diggings, and he sent his buddies the next year to dredge the spot. Well, they had a field day in that hole and took out ounces of coarse gold! As I reflect now, It's clear to me that the suction eddy had cut into an old channel that trended up the river bank to that old drift mine. (Likely how the Oldtimers had found the higher deposit of gold in the 1800’s.) This gold tale is just one of my missed opportunities that still haunt me.]

[Lanny]

An explanation on the nature of boulder clay, and glacial gold action

People have asked me what boulder clay is. Well, the only explanation I have comes from local knowledge shared with me by the placer miners in the northlands.

When the glaciers were running many miles deep, and countless miles wide during the ice age, they dragged unsized rock and soil with them. They packed along serious boulders mixed within stubborn clay. While parked and melting, or when melting and retreating, they dumped this nasty mess all over the lower areas, as well as the mountains and valleys. To understand this, it’s necessary to remember those huge glaciers were miles thick, covering many mountains completely.

With such titanic forces moving these glaciers, and when they dropped their loads, they often left forty feet and more of this boulder clay which smothered the existing stream beds. This protected any golden stream deposits for untold eons. Over countless thousands of years, successive glaciers and post-glacial streams chewed away at the boulder clay in the canyons, erosion working its way down to those hidden deposits. When they cut into that former river-run (freshly exposed), they started re-concentrating the gold in those existing streams.

Sometimes, the early prospectors got lucky enough to find a bedrock outcrop that was the rim protecting an ancient channel from glacial gouging along a river, and then they’d tunnel in, drifting along the bedrock to mine out the deposit under the huge deposits of adjacent boulder clay bordering the streams.

So, boulder clay (sometimes called armour clay), is a solid deposit of boulders and heavy clay that overlies old stream deposits and ancient channels. It is the bane of modern miners, as it has to be stripped away to get at the channels underneath, and it often requires ripper teeth on the back of huge bulldozers to break it up sufficiently so it can be bladed out of the way. Clearly, it takes a lot of time and money to strip it off.

But, once that overburden is stripped away, and if the Oldtimer's haven't beaten the modern miners to the deposits underneath, it is sometimes a glorious bonanza to behold! The nuggets in the sidewalls of the channel are easily seen (a foot or two off the bedrock). I’ll never forget that incredible sight twice seen: multi-gram nuggets spaced eight to ten inches apart, making it easy to finger-flip the nuggets out of the channel material into a pan. Too bad those nuggets weren't mine to keep!

All the best,

Lanny

[Lanny]

Local miners and exploration

Way up north where the wolverines roam, we were out one day cutting firewood, then took off to find drinking water. We found a local spring up the canyon with sweet water whose taste finished with a slight buzz on the tongue, strange, but great stuff.

The next morning, after starting a fire to kill the chill in the wall tent (water in the fire bucket covered in ice), and after a miners’ breakfast cooked on the wood-burning stove, we lathered up with bug-dope, hopped on the ATV, and bounced along the rough, twisting road through pines, fir, and stands of aspen and birch. Fresh yellow and purple mountain flowers grew thick along the road-side. Lazy bumblebees tumbled from flower to flower while butterflies and humming birds sipped nectar as the pleasing smell of new-growth pine filled the air.

The ATV climbed in elevation toward the active upstream placer claims. We stopped and introduced ourselves in every mining camp along the way. Two upstream operations bordered the main logging road, with a total of eight workers. Both operations had exposed old drift mines from the 1800’s and 1930’s.

Staring at those now open tunnels was fascinating, and one of the miners offered to lift me up in the bucket of the excavator if I wanted to poke around inside. But looking at the collapsed and rotting timbering, I passed on his generosity.

The larger of the two placer mines was working upper-strata dirt that ran six grams to the yard, but when they hit bedrock, it ran eight grams to the yard. The bedrock gold was coarse, with nuggets in the half-ounce to ounce-and-a-half range. That coarse gold had tons of character, bumpy and rough. The bedrock that held it was graphite schist and slate.

The other operation was smaller, their equipment much older, with lots of down-time to repair equipment. Moreover, both mines were located where several ancient channels intersected, and the smaller mine was getting the same gorgeous gold. At both locations, the friendly miners shut down their wash-plant and excavation machinery to chat with us.

Both groups of miners invited us to detect their claims whenever we wished. We just had to tell them what we found and where. Furthermore, they told us to keep all the gold we detected, great people! (We went home with some fantastic nuggets thanks to them.)

Leaving the two mines, we took a branch off the main logging road, exploring an inactive logging trail. Along the way, we noticed where old growth trees were cut long ago in the canyon, their massive, moss-covered stumps accompanying the new growth. To our surprise, we found a placer miner far up that trail, located downslope in an adjoining gulch. With an old WWII-era D-8 Cat, he was patiently working a small-scale operation with a pay layer that was six feet off the bedrock. Strangely, there was no gold on the bedrock (lots of pyrite though), yet the gold he was getting was magnificent—some of it was crystalline, and all of it was coarse.

He was a very trusting sort, and at the end of the day, when the cleanup was taken from the wash-plant, he gave us the concentrates and told us to pan them out! (They were loaded with coarse gold.) He left us to keep panning, then headed off to have a bath in his outdoor tub, heated by a clever invention he’d connected to the water-jacket of the engine block of his Gen-Set.

From him, we learned the gold deposits in that area required real detective work. The pay-layers had to found and worked wherever they were; they weren’t deposited in a normal way due to multiple glaciation events. It required forgetting former gold ideas, keeping the mind open so as to accept new techniques and strategies hard-earned by the locals. So, we threw out the idea that gold always concentrated on bedrock and accepted his new teachings.

We spent the entire day exploring, meeting people, and asking lots of questions. While cruising from mine to mine, we also oriented ourselves to our new surroundings. By the time we got back to camp, it was getting dusky (about 11:30 at night). We were both bone tired, not yet recovered from the sketchy trip in to our base camp.

So, back at camp, we were eager to drive the bugs out of the tent by firing up the wood-burning stove, as well as making sure the Winchester 30-30 was loaded for business and within easy reach, just in case an apex predator decided to call.

With the tent nice and warm, we crawled into our sleeping bags, and we drifted off accompanied by the solid heat, and lulling crackle of the logs burning in the stove.

We spent weeks in the area and had many adventures. It is a nugget-shooter’s paradise for sure, and I hope to return one day. But the trip is hard on vehicles and tires, and the air is filled with bugs. So, perhaps I’ll visit one year in the fall, after the frost has knocked the bugs down, and it has firmed the roads up a bit.

All the best,

Lanny

[nebulanoodle]

Love these stories! Sounds like a great time and some great conversations. I’m sitting here wishing I could join you one day in those far northern reaches!

[Lanny]

13 hours ago, nebulanoodle said:

Love these stories! Sounds like a great time and some great conversations. I’m sitting here wishing I could join you one day in those far northern reaches!

Thanks for leaving a kind compliment, appreciate it.

Lots of fun, always some unknown in the North, sometimes rewarding, sometimes scary, oftentimes a grand adventure. You'll have to do it someday, something you'll always remember, glad you enjoy the stories.

All the best,

Lanny

[geof_junk]

Local miners and exploration

  I had to give you a HaHa as your use of adjectives and description is well beyond my abilities. You brought back many smiling memories that I have experienced on the gold fields. So keep up posting yours for me and other to enjoy. Thank you.