Tag Archives: Keweenaw stones

Greenstones in the Rain (and other fun U.P. things)

The colors in the Keweenaw were about 30%, but we found spots. This tree was near Phoenix.

Our fall weekend in the Keweenaw was very productive.

The view from the top of Brockway Mountain indicates it will be a couple weeks before peak colors.

By going up Thursday, most tourist traffic can be avoided, and an extra day for rock hunting opens up. We found some nice greenstone at the Mandan.

Finding a nice Greenstone in all this rock is a challenge.

The best time to locate Greenstones is in the rain. The silky chatoyance just pops from the stones, both the loose nodules and those nodules still embedded in the matrix. We looked pretty wet and scruffy after a day in the rain, but it was worth it.

We had the Cliff Pile to ourselves on this drizzly day.

My favorite fall colors, maple Leaves and Greenstones.

Friday is also ‘pasty day” at the Mohawk Superettte. The locals purchase their pasties (pronounced pas-tee) in quantities, and we are happy to when we are in the area. We find them to be some of the finest pasties around. For those that do not know what a pasty is, they are a portable Cornish pie made from coarsely ground beef, with small cubes of potatoes, and rutabagas. You can find recipies on line. This was a hearty lunch for the miners, sort of an early version of fast food!

Any day is a great day to Stop in the Jam Pot and purchase a few delicious Muffins and rum-soaked, raisin and nut filled, brownies from the monks. Yum! (Closed Sundays, of course)

Makes me hungry just looking at the sign in Mohawk.

This rock ship at Kearsarge always makes us smile. Bonnie mans the ship at the Veterans Memorial.

While just aimlessly searching I saw a 3″ suspect just laying on the ground. This was just a suspect greenstone and may or may not develop into a winner. We also went to the Cliff mine, my favorite Prehnite location, and picked up some nice material to cut.

Whenever I go to the Upper Peninsula, I enjoy at least one day wire wrapping at Copper World in Calumet, and I really had a great time as usual. Talking to the customers, and answering rock and jewelry questions are a couple of my favorite things.

Sunday was another cool day with some scattered showers, we went out with some new rockhound friends. Bonnie found some nice little greenstones, and I found a very nice 2″ stone that has to be cut from a rock.

From left to right beginning at the top: Mesnard Datolite, Rose Quartz and Quartz with Copper, Franklin Datolite, Yellow Keweenaw Point Datolite, Patricianite with Silver and Copper.

While up north, I also located a source for some rare and unusual things like Patricianite with silver, and pink crystallized Datolite. Let’s see what kind of jewelry I can make.

Close-up of the Rose Quartz Cabochon.

A couple other things we did were donating a polished Pink Petoskey to the Seaman Mineral Museum (Blog coming), and I walked into Copper World Sunday afternoon and met a couple from Dayton, Ohio that had just purchased an exceedingly rare large Greenstone with a centrally embedded copper crystal, as well as a Petoskey Stone Pendant. It’s always nice to meet with owners of my jewelry. It means a lot to me to talk to them and answer any questions, and I think that the jewelry means a lot more to them when they can say they have met the artist. I could have stopped in any time, but Karma (I learned about this from Earl) brought me in at that particular time.

Patricianite with silver and copper inclusions.

Now I have some exciting new U.P. gemstones to cut, polish, and wrap up. It will be a great rest of the month.

The above stones I cut this morning. Enjoy!

Working on U.P. Projects

Today let’s talk about some of the projects I brought back from the Upper Peninsula.

Sue's "super" Thomsonite

Sue has been a faithful customer over the years and she has brought me some amazing local stones for custom pieces in the past.

This time she brought one of the largest and most amazing Pink Thomsonites I’ve seen in a while. The cabochon was found in the Keweenaw 40 years ago, according to an I.D. tag that was on it. Thomsonites of this size and quality are very scary to work with because of the value and this one because of the size. Thomsonite sometimes just blows apart when you work with it on the grinder. Any harmonics created by the machine grinding wheels can send shockwaves into this material that sometimes just blows the stone apart.

I am always up to a challenge, but I also would hate to ruin a $500 stone. Thomsonite varies in hardness quite a bit, as well as crystal structure.

I had to re-work this stone to balance the shape and the dome. Believe me it was scary. This stone was very hard and solid (fortunately), and I was able to reform and re-cut it .

I was very happy with the way the wrap came out. As is my normal theory on wrapping I did not cover the beauty of the stone, yet I wanted the wrapping to be as elegant as the stone. I liked the way it came out; as did Sue.

Unusual blue coloration enhances this great little agate.

Nancy's ring.

Our friend Nancy brought several stones for me to assess. She enjoys the U.P. and rock hunting. Her daughter, Elizabeth, is also a rockhound. Several of Nancy’s stones had possibilities, and cutting when I got home produced an unusual small agate from the end of an otherwise plain stone. The stone had a strange bluish area. I have never seen this coloration in a Lake Superior Agate. It is hard to explain and lucky for you I took a picture. I made a ring for Nancy that reminds her of the U.P.

Elizabeth's wonderful pendant.

Elizabeth found a very cool ledge agate the next day and after cutting it and finding out how nice it was, I made a great little silver pendant for her. All these projects I really enjoyed. I love making my customers happy. Thanks to all of them.

You are not going to believe what is inside this stone.

The third project was my wife Bonnie’s anniversary pendant. You have seen the amazing copper-infused Datolite Pendant, but I don’t think you saw the ordinary looking rock it came from. You never know what might be inside the crust of a rock. I think that is why I love making jewelry. I’m the first person to actually see the inside of the rocks I cut for my jewelry.

The 35th Anniversary Pendant...SHE LIKED IT!

I would be happy to do some custom work for you. I can take your stones and create something wonderful just for you! What’s your dream jewelry? Let me make it for you.

Greenstones on the Workbench

Isle Royale Greenstones (Chlorastrolite) are so striking with their stunning chatoyancy and handsome alligator-like pattern. People think of diamonds as rare, when, in fact, they are artificially scarce due to lack of free market sales and cartel controls.

A recent batch of Greenstones and Thomsonite turned out to be amazing. This photo has not been enhanced. I'm thinking poster!

Michigan Greenstones on the other hand are a one-source gemstone. Nowhere else in the world are Greenstones found other than in Michigan’s Keweenaw Peninsula and on Isle Royale National Park, where they are illegal to harvest. Chosen as Michigan’s State Gem, the Greenstone represents Michigan uniqueness due to this limited accessibility, but also means it is not well known outside of Michigan residents. In fact many outside of the Upper Peninsula are not familiar with it! Having said that, we are amazed at the wide range of locations across the country that order our Greenstone jewelry and cabochons for jewelry.

Recent depletion of many of the mine waste piles in the Keweenaw to use as road fill is making the Greenstone supply even scarcer. Two of my all-time favorite piles are gone now. There are very few, non-private waste piles still available for the Rock enthusiast to pick up a Michigan Greenstone. Not all piles are worthy of seeking Greenstones in. I expect a big spike in the Greenstone prices over next five years. Now is the time to buy Greenstones, especially quality ones with good patterns and coloration.

This "Michigan Miracle" Pendant is one of our popular used of Isle Royale Greenstone. Also included in this one is Datolite, Lake Superior Agate, and Jasperlite.

Our Greenstone Pendants and Greenstone cabochons are very popular and we continue to sell both on line and at art shows. I cannot say I am the largest Greenstone dealer in the U.S., but I am one of a handful of large volume dealers. I cut all my own stones. I find stones and purchase quality stones from other miners.

Michigan’s State Gemstone should be on everyone’s bucket list. You will never regret having and wearing these lovely and rare treasures.

I have been working up greenstones I just brought back from the Keweenaw, and today I have to dop up another hundred for the lapidary work. Some of these recent stones are absolute killers. I’m going back UP in the next few weeks and I’m going to search for a rumored secret spot to dig Greenstones. Unfortunately the old guy that told me the general area where he used to dig Greenstone has passed away. This will be a treasure hunt for sure.

Be assured I WILL BE watching my rearview mirror to see if YOU are following me.

Thomsonite Salvaged from the Road

It’s always a dilemma to know what rock to go hunting for in the Keweenaw. The choices include scouring the rock piles Chlorastrolite (Greenstone), Datolite, Prehnite, Thomsonite, or walking the beaches for Lake Superior Agates. All of these Michigan stones are good for jewelry, so it is a pleasure to add any of them to my supply piles. Just as a lark, Bonnie & I decided to wander north in search of something, and ended up on a two-track where we had previously found Prehnite and Thomsonite.

Too bad I chipped this one.

As is my usual habit, I drive slowly down the track, and peer out the window. As I was looking out the window, I saw a small white rock nodule lying in the middle of the road. If you have ever hunted Thomsonite or Verigated Prehnite (U.P. Thomsonite), you would know to look for white bleached out nuggets of rock in the banks and the trail. I took my pick and without completely getting out of the car, hit the end of it, exposing a wonderful eyed Thomsonite. I should never have his this stone, but fortunately I just chipped it. I don’t believe I’ve ever found a nicer Thomsonite. These are so very rare when they are beautiful colors with eyes.

All day long we looked for similar pieces, but never even came close. Some days are like that, you find the best thing first, and then all the rest fails to deliver that same excitement. I can’t wait to get home and put that stone under my grinder. It will surely be the best drive-by road hunt I’ve ever had. And it was shady too. A “Cool” rock hunt in more ways than one.

The finest piece of Pink-eyed Thomsonite I ever found in the Keweenaw,

There will be more on this stone when it is finished and in a pendant.

Cliff Mine-Prehnite Hunting

The hounds are released on the Cliff Mine Pile.

The pile was bulldozed and the Copper Country Mineral Retreat hunt at the Cliff Mine began at 9am. A good crowd of eager hunters attacked the pile. A nice trench was excavated and some entered it while others, like me hunted the surface. The Cliff, even though hunted for over a hundred years by rockhounds, still produces some fine copper specimens as well as other copper associated minerals. Native American Indians hammered this copper in prehistoric times, and chisel chips left from their mining are found at the Cliff today.

A nice trench was excavated and our buddy Keith from Baltimore found his way into it.

A great view of the Cliff mine showing the trench that fellow rockhounds were searching.

Since I already have so much native copper, Bonnie and I spent the day hunting for gem Prehnite for our jewelry. The Prehnite at the Cliff formed in small veins maybe a few inches thick and is apple green and speckled with copper. We were quite successful and found good pieces with some help from Pam Hecht who is a good buddy and led the hunt.

Prehnite comes in various forms and colors in the Copper Country. One of my favorites is referred to as “U.P. Thomsonite” and is verigated, often with eyes. Prehnite comes in assorted pastel colors, the most common being pink and green.

A seam of Copper bearing Prehnite from the Cliff Mine.

Here is some of that Prehnite on my workbench. Notice the copper?

The Cliff mine was the first successful copper mine in the Copper Country of the state of Michigan. The mine is at the now-abandoned town of Clifton in Keweenaw County. Mining began in 1845, and the Cliff was the most productive copper mine in the United States from 1845 through 1854. Large-scale mining stopped in 1878. The Cliff was a fissure mine where the seams of copper were vertical.

Fissure mines are always interesting to search. I spent the day looking for gem quality Prehnite, and Bonnie and I found many nice pieces. These veins of Prehnite are commonly no more then an inch or so wide with a split down the middle as the Prehnite formed in from the outside of the vein and met in the middle. Much of this Prehnite is loaded with specks of Copper and is a pleasing apple green color.

Although amygdaloid and conglomerate deposits of the Keweenaw tended to be lower-grade than the fissure deposits, they were much larger, and could be mined much more efficiently, with the ore blasted out, hoisted to the surface, and sent to stamp mills located at a different site. Amygdaloid and conglomerate mining turned out to be much more productive and profitable than fissure mining, and the majority of highly successful mines were on amygdaloid or conglomerate lodes. The first mine to successfully mine a strataform ore body was the Quincy Mine in 1856. The most productive deposit, the Calumet conglomerate, was opened by the Calumet and Hecla mining company in 1865. (Mine information from Wikipedia)

I’ll be excited to cut this Prehnite and make some attractive pendants.

Greenstone from the Junkpile

I promised you something special on May Day, and here it is.

I have a BVD (Better View Desired) pile in my shop. Rocks that I’m just not sure of, as well as gemstones that need further time-consuming work go into that pile. Stones that are without promise go in the trash bucket, but when they don’t look real promising, I’ll give them a toss in the BVD pile. When I’m feeling patient, I pick through that pile for something to work on.

I placed several possible Greenstones in that pile a few months ago, and today I re-discovered my BVD pile under some other material. I decided to have a little fun and see what I could make out of the BVD pile.

I immediately discovered a large Greenstone that had a small patch of pattern. The rim of the Greenstone showed mostly Calcite. Experience told me that Calcite could be a good sign, or then again maybe not. Calcite often means copper in it. Some of the finest copper crystals are found embedded in Calcite.

When you have Calcite you have to be extra careful. Calcite can sometimes be fragile, and at other times it is very solid.

As I carefully proceeded into the stone, I noticed that fine Greenstone appeared just on the outer layer of the Calcite gradually appearing under the stone’s dark green crust. A beautiful unusual stone began to emerge from an ugly duckling. Greenstone is very striking on pure white Calcite, and this one has fabulous contrast. As a bonus, I noticed that the Calcite was accented with fine copper particles. I love how my close-up photo shows the copper.

Close-up detail reveals fine copper within the calcite.

This is what makes rock collecting and lapidary so satisfying–every stone has it’s own look. This one is WOW!!!

Another amazing Greenstone-I'm So lucky!

The finished Greenstone ended up being a 5.4 gram beauty, one inch tall and about 3/4 inches wide; the largest Greenstone I’ve cut in a while. I was so thrilled about this Greenstone, I wire-wrapped it right away. Gold with a bit of twisted silver was the perfect choice. The regal looking wire top is an ideal enhancement to this beautiful and scarce gemstone. The first person that saw it now owns this dream, so if you want your own greenstone, browse our pendants or cabuchons.

Firebrick & Greenstone Pendant

I have a most creative customer (Nelson) who is always thinking outside the box when it comes to jewelry design. His latest concept was a Upper Peninsula representative pendant with an Isle Royale Greenstone placed approximately where Isle Royale is located. Nelson was given the honor of naming this pendant which he called “Yooperland”, so for here on out they will be Yooperland Pendants.

After some thought Nelson decided on a U.P. cut from firebrick. Firebrick has been talked about in my blog before but let’s review: When the copper smelters were build in copper country, they were made of brick. Over the years as copper was smelted, the copper vapors and solids permeated into the brick and replaced everything except the silica materials. After the mines were closed the ovens and stacks were either taken down or fell down. Enterprising individuals then took away some of this heavy material and used it in lapidary projects. Today fire brick is quite scarce, but there are still stashes around. Since firebrick has such a great story of the Copper Country, it makes wonderful conversational jewelry.

This "yooper special" is a wonderful design.

This "Yooperland" is a wonderful design.

I usually coat my firebrick jewelry with a two-part epoxy resin to prevent it from tarnishing. This will keep the “Yooper land” pendant shining with a coppery look.

I used a 30X40mm Blue Lace Agate cabochon as the base for this project. After cutting out the firebrick and prepping it, I polished a wonderful Greenstone. Both of those stones were glued to the Blue lace so it appears as if everything is floating in Lake Superior.

The wire wrapping in gold and silver is quite elegant as befitting Nelson’s Queen. I added additional height to the perimeter to protect the firebrick and the greenstone. I expect Nelson’s wife will have a wonderful birthday gift. She loves U.P. themed jewelry.

I expect to make several more of these before spring. I believe these pendants will be one of our most popular, especially for our U.P. shows.

Nelson wrote me after giving his wife her Yooperland: The YOOPER LAND pendant is OUTSTANDING! I gave it to my wife for her birthday and she loves it. However there is a small issue that I must deal with when we go out in public. Nearly everyone comments on her necklace- BUT the rest of the people just stare. Sometimes I get a little jealous . MAYBE the solution would be a turtle neck shirt!

By the way my wife says “THANKS”

Copper Shoots–an Amazing Greenstone

Check out the copper in this one!

A most fascinating Greenstone crossed my workbench this week. When you cut a piece of chlorastrolite, you expect to see green, or dark green. To see the shine of copper throughout, and feel the resistance of tough metal when cutting, you know you have a most unusual Greenstone. Normally when copper appears in a Greenstone, it is a spot, or a small part of the stone. This has copper from bottom to top! The Chlorastrolite on this one does not exibit the classic alligator skin pattern generally expected on a grade “A” Greenstone, but this has a shiny character highly regarded by folks who appreciate a most distinctive gemstone. The Copper Country does not often offer up a stone this large, with so much Copper! We have many Michigan Greenstone cabuchons for sale as well as Michigan Greenstone pendants, but as you look them over, you can see this is one-of-a-kind.

Due to the approximately 50% copper content and it’s large size ( 7 gram weight), this Greenstone pendant is showy and unusual.

Click here to see our available Greenstone pendants.

My Best Datolite Ever

The faithful husband encouraging Bonnie to "did faster".

The faithful husband encouraging Bonnie to "dig faster".

The pitter patter of light raindrops was my alarm clock. Bonnie & I were up and off before dawn’s light. Only a thermos of coffee and a portable monk’s muffin went with us, as we hurried to our destination. The goal was to get there before “The Badger” got there. .(Why? I don’t know—a point of honor I guess.) We had seen him digging a hole the other day, and knew he was attacking the rock pile with a sense of purpose. We saw evidence of his success and wanted to be successful too.

Don's BIG hole.

Everybody was digging BIG holes

Chrystal's odd find while metal detecting

Krystal's odd find while metal detecting. Would this be a "float hammer" just because she was looking for "float copper"?

At 6:00 am the traffic is pretty light on US 41 in the Keweenaw, but low and behold a car appeared and turned into our very own destination rock pile. I knew who it was! Yes, the Badger, a vigorous and determined datolite digger had arrived moments before us. The bad news was that the rain disappeared, and had not been sufficient to clean off the rock recently moved around there, so there was no datolites washed out. At least the dawn had come on enough that we could see.

We watched the experienced work of the Badger (this is not his real nickname, I just called John this because of his digging skill) and joked around with him. He is a recently Tech grad in geology engineering and is goofing off this summer gathering datolites and other rock treasures. John Dezelski dug and looked. He ended up the day with around a dozen. Bonnie & I dug and between us finally got 3. You have to develop an eye, because otherwise they are camouflaged.

"Don"atolite

I have been hunting minerals in the Keweenaw for years now, but I always focused on greenstone and “cutting material”, a vague term used to cover pretty rock found in this area–Patricianite, Prehnite, and others. I have dug for datolites before, but I don’t recall finding many! Luckily sometimes when you’re digging you find other stuff to please you.

Greenstones seem to be getting harder to find as the years go by, especially real nice big ones. All my old glory holes have been hauled away for road fill. We used to get Greenstones and Datolite at many locations and now those piles are gone. It’s not like the good old days. If you want a greenstone or datolite at a reasonable price, act now. Less supply means higher prices.

The Hottest Item in the Keweenaw

Most rockhounds flock to Michigan’s Keweenaw Peninsula to find copper, but there are many other rocks and minerals that are much more rare. Any rocks and minerals that were not native silver or native copper were thought of as “Trash” and ended up on the mine rubble piles. Today we are aware of these rare treasures and dig through these old piles to find them. Unfortunately many of the spoils piles have been hauled away for fill or crushed and put under roads. Just imagine the treasures that could be found under the pavements in the Keweenaw!

I found this one inch beauty within minutes of sitting down to dig. I just had to pluck it out with my fingers.

The current hottest gemstones in the U.P. are copper-included agates. Copper has replaced some of the banding in these agates. They are generally pink and often include green. These agates are found only in a few of the mine spoil piles here in the Keweenaw, and I do not know of any other place in the world where you can get them. They generally sell at premium prices (if you can find them). Some of these agates do not include copper, but are rare none-the-less just because they are associated with the copper mines.

Chris "slams" a rock containing agates.

The business end of Chris' slammer.

There are two ways you might find these rare beauties. One is finding a “floater”, or an agate nodule that has broken free of any matrix. On a huge pile of rock, you could wish for a better strategy. The second way to find these agates is to find a rock with nodules and break the rock open to expose the usually small agates. The agates can be easily fractured, so care and a lot of finesse are required to extract them. Yes, they do show up on a sensitive metal detector.

My friend Chris has a custom built “slammer” that has a chisel on the end and virtually “slams” the rock apart. However, most of us break the rock with a heavy hammer and a strong arm. One rock I found and Chris broke open contained several copper agates, but it took some time and effort to get them out. A couple agates were sacrificed in the extraction, and Chris somehow bisected one agate perfectly in half.

Those that know (me) know that if I cannot make a piece of jewelry from a rock, I probably don’t need it. I am not a specimen collector, but I sometimes find specimens, and usually keep them for barter. I found a few “traders” already and look forward to a few more as the week goes on. I think that another Copper included agate hunt may happen tomorrow. I really had fun today.

Two perfect agate halves.

They used to have convicts break rock as punishment, and we were out there doing it for fun. But we did get to leave at our choice, just about lunchtime! Smashing with the crack hammer is serious work, and Bonnie’s arm is still sore. I think IF I can keep her hammering for a few more days, perhaps her arm muscles will strengthen (good luck with that, Don).

By the way, Chris found the largest agate today, but Bonnie was a close second.