Time
starting to spend too much on rocks
Making something positive out of COVID restrictions by learning to create jewelry out of stones.
Member since September 2021
Posts: 154
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Post by Time on Dec 14, 2021 12:43:15 GMT -5
Can rocks change color? In 2019 I was on a road trip around Nevada, Arizona, and Utah. We flew into Las Vegas, rented a car and headed off to Winslow, AZ, to look for Flat bed Fords. Fun place to visit, stayed at the restored Rail road hotel there. The next day we headed out to Zion Nat Park. Some where North of the Hopi reservation we pulled over at a road side park that had an interesting rock building on it an plenty of room to walk around. The parking area was gravel and sand and I saw some small stones that looked like a light blue Turquoise and I picked up three of them. That evening when we got to our hotel, just outside the park, I pulled them out of my pocket and they were black. It was a bright sunny day when I picked them up but they sure looked blue, no alcohol involved, so anyone have any ideas?
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jimmie
starting to spend too much on rocks
Member since August 2021
Posts: 233
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Post by jimmie on Dec 14, 2021 13:32:45 GMT -5
Was any peyote involved in your trip?
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Time
starting to spend too much on rocks
Making something positive out of COVID restrictions by learning to create jewelry out of stones.
Member since September 2021
Posts: 154
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Post by Time on Dec 14, 2021 13:50:48 GMT -5
😊 It wasn’t that kind of a trip but if it was it could explain a lot.
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Post by mohs on Dec 14, 2021 14:40:22 GMT -5
common changes in the painted desert area a flat bed ford in Winslow ?
been there on peyote possibly
one explanation is certain mineral matrix's such as hornblende that can contain copper chryscholla and appear be greenish or blackish depending on light or might be some sort of native coyote trickster
enjoyed your tales and adventures Ed
another thing tho ,,,
i was in a copper canyon by Ray mine exploring I came by an outcrop of rocks that were vividly chrysholla shaded thought I hit the hot spot
on closer examination I think they were sprayed
maybe with fire repellent as I was in the burn scar area
mosquito repellent fools me many times in the city hounding
pretty sure no one was spraying that out in the middle of nowhere it was kind of strange
should have taken one of those rocks home for further inspection...
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Post by amygdule on Dec 14, 2021 15:01:11 GMT -5
Time , the color change could be from oxidation as a result of exposure to your bodily secretions. It sounds like mohs peyote tea is kicking in
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Post by MsAli on Dec 14, 2021 15:19:59 GMT -5
Time , the color change could be from oxidation as a result of exposure to your bodily secretions. It sounds like mohs peyote tea is kicking in
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Post by mohs on Dec 14, 2021 15:27:20 GMT -5
Time , the color change could be from oxidation as a result of exposure to your bodily secretions. It sounds like mohs peyote tea is kicking in actually we mixed the buttons into a McDonald Chocoholic Milk Shake 20 minutes later Ronald McDonald starting to turn into a Jack'nBox m stly
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rewdownunder
spending too much on rocks
Member since March 2012
Posts: 357
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Post by rewdownunder on Dec 14, 2021 15:39:26 GMT -5
Very interesting. No idea but you could try different light conditions including UV. A few minerals change color in the UV in sunlight and blue is one of the colors that shows. fluorite is an example. second put them in water and see what happens? again some things change color if they take on water. opal is an example. give the surface a sanding and see if the surface color can be removed. You may have found the next mood ring material.
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Post by Bob on Dec 15, 2021 14:46:03 GMT -5
Under certain circumstances, certain pieces of Labradorite cut just the right way could be like that--though more of an iridescent blue not solid blue--and then look almost black and boring when held in the hand. But it would be extremely unlikely to have pieces of it in a parking lot unless someone put them there.
I do collect a lot in the general area you've mentioned, though not as far north, and I can think of no real explanation. However, and this is a real stretch, when I was a child in Tulsa my mom accidentally did something to a piece of turquoise jewelry that caused her to scream out loud and that it had nearly turned the stone black. I can't remember what happened, whether it was some household cleaning product, or bleach, or some chemical or acid that my dad had around. But whatever it was, it was super easy to fix.
I have learned a lot of desert rocks sure look gorgeous in the sunlight, especially when the sunlight is at an angle and not directly overhead at midday. Sometimes rocks containing oranges, reds, and yellows almost look on fire in that kind of light and not so great at home.
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