this post was submitted on 20 Jun 2023
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Geology

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For all things geology, including serious discussions, memes, field photos, rockhound questions, and more. See also: Mining, Geophysics, Geology Careers, and !earthscience@mander.xyz

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[–] troyunrau@lemmy.ca 6 points 1 year ago (2 children)

From where I'm sitting in my home office, there is an array of glacial boulders in the flower bed outside my window. I picked them from a farmer's field (with permission) -- a wide assortment and roundish. As a geophysicist, I only know three rocks, and all three are present: granite, not-granite, and maybe-granite.

[–] kool_newt 4 points 1 year ago (1 children)

I only know three rocks, and all three are present: granite, not-granite, and maybe-granite.

I know big rocks, cool rocks, regular rocks

Closest to me, a granite or marble countertop that's actually cool. My soon-to-be geologist friend was always pointing things out.

[–] troyunrau@lemmy.ca 3 points 1 year ago

Oh, I forgot about that. I have granite in the bathroom. It is definitely granite. I know that one.

[–] Bo7a@lemmy.ca 2 points 1 year ago

granite, not-granite, and maybe-granite.

This is gold. Yoinked.

[–] jerkface@lemmy.ca 5 points 1 year ago (1 children)

Presumably calcium oxalate

[–] troyunrau@lemmy.ca 2 points 1 year ago

You should get those looked at ;)

[–] Bo7a@lemmy.ca 2 points 1 year ago (1 children)

Does my Orthoceras fossil pendant count as a rock?

[–] troyunrau@lemmy.ca 2 points 1 year ago (1 children)

Sure! Does it come with a story?

[–] Bo7a@lemmy.ca 1 points 1 year ago* (last edited 1 year ago) (1 children)

My wife caught me bashing gravel with a hammer one morning and asked what I was up to. I told her that I used to love digging for fossils and she took a note.

A few weeks later this showed up:

Not THIS one. But very similar :)

Not exactly this - But very close

[–] troyunrau@lemmy.ca 2 points 1 year ago

That's a keeper! And the pendant is cool too ;)

[–] 908musdf@lemmy.one 2 points 1 year ago (1 children)

A small beryl crystal I EDC, and a large specimen of silicified tuff from my claim that lives in my office.

[–] troyunrau@lemmy.ca 2 points 1 year ago (1 children)

silicified tuff from my claim

Oooh! What's your claim? Anything cool?

[–] 908musdf@lemmy.one 2 points 1 year ago (1 children)

The tuff was flow-banded, and the silica followed and preserved the structure. So not exactly agate, but there are sections that look much like it. Other minerals would be cooler, but it is nice lapidary stone!

[–] troyunrau@lemmy.ca 2 points 1 year ago (1 children)

Do you sell them raw, or just use them for your own purposes?

[–] 908musdf@lemmy.one 1 points 1 year ago (1 children)

I am barely getting started with lapidary, like at choosing a saw right now. Eventually both, I hope (thus the claim).

[–] troyunrau@lemmy.ca 2 points 1 year ago

Feel free to post project updates here. This isn't !woodworking@lemmy.ca, so we won't have anything like their traffic, but there's probably quite a few rocks and minerals nerds here who would love to see updates! Myself included :)

[–] zpnrg1979@lemmy.ca 0 points 1 year ago (1 children)

For me, I have a monomineralic rock in my head made of apatite.

[–] troyunrau@lemmy.ca 1 points 1 year ago (1 children)

Some fluorine replacement going on in that mineral?

[–] zpnrg1979@lemmy.ca 1 points 1 year ago

Maybe in elementary school... but I still have them so it likely worked. When I lived in town they started putting it in the drinking water so maybe that helped!

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