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Posts Tagged ‘rock collecting in Ontario’

Finding the Croft Uranium Mine – Ontario

Between 1953 and 1955 Croft Uranium Mines worked the area for radioactive minerals. They found betafite, uranite, uranothorite, allanite and pyrochlore. Their appearance is flagged in the pegmatite by a dark red color and quartz that has darkened to a grayish-black. There are also said to be small pink garnets in the gneiss and larger specimens in the pegmatite – some reaching up to 3 centimeters in diameter.

A couple of hundred meters along the mine road I got Maggie to pull over in a little clearing and I continued on foot, leaving her there with the understanding that I would be back as soon as I had found the mine and explored the dumps. She had Shaka with her for company and I had my whistle that I tooted on intermittently so as not to walk unexpectedly into a hunter’s ambush. The whistle also served the dual purpose of letting bears know of my presence as the bush was thick and close to the path and I had no wish to meet the “mother of all bears” in a circumstance of mutual surprise.

The road dropped steeply down into a valley and I soon realized that leaving the car above was a wise move. There was nowhere to turn around, the ruts got deeper, and the track was soon entirely underwater. Beavers had built a stick and mud palisade that held back a stinking organic tidal wave that would one day inundate the swamp below. As for the road, forget it. I climbed across on logs and waded knee-deep in mud, thinking what it might be like during bug season (What looks like a stream in front of the beaver dam is actually the mine road).

On the other side of the beaver dam the track began a slow and steady climb upward. I noticed the appearance of crushed granite where I walked and of course the telltale patches of eastern hemlock. These trees tend to grow in clusters wherever the natural forest has been disturbed. They tell you where to look for hidden human habitation.

I soon discovered the mine dumps on my left and in a marshy gully I unexpectedly found the adit.

 

See another abandoned uranium mine in Ontario …  here or my trip to the Sarnac Zircon Mines  … here (where we were again terrorized by the possibility of being eaten by bears

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Whats under Cobalt

P1020263, originally uploaded by Mic2006.

I just got back from Cobalt last night, it was a long drive – 6 hours.

While in Cobalt I took an abandoned mine tour. Its a service offered by the local museum – well worth doing if you like that kind of thing. This here is one of the tunnels in the old Colonial Mine. There are over 27 kilometers of passage – stretching as far as Lake Temiskaming I am told. Beneath the level we were at the tunnels are all flooded. Shafts lead up and down – but not anywhere near where we were – it was quite sanitized and safe for the average visitor.

Tunnels spidered along through dense black rock following the calcite veins that had led to silver. Outside every mine there were big piles of scree, it suggested something of the extent of the tunnels within.

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I thought I had made a new discovery

P1010863, originally uploaded by Mic2006.

I noticed this blocked up mine and an interesting scar above it when I was travelling along Old Mumford Road after an unsucessful attempt to find the Tripp Nu-age mine. I thought that I had found a new area for collecting rocks as there was plenty of purple fluorite in the crevice above but this turned out to be the Dwyer Fluorite Mine. It looked like there might be some radioactives in the seam with the fluorite but I could’nt be sure.

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