bunnyfights
noticing nice landscape pebbles
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Member since May 2022
Posts: 88
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Post by bunnyfights on Jul 9, 2024 21:33:04 GMT -5
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Post by hummingbirdstones on Jul 9, 2024 22:21:28 GMT -5
Cool looking specimens. Wish I could help with your questions, but those are above my pay grade.
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tribeunited
fully equipped rock polisher
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Post by tribeunited on Jul 10, 2024 12:39:11 GMT -5
I buried this, still needs help - bump! Oh - and those specimens are really cool looking, like sculptures. ![:)](//storage.proboards.com/forum/images/smiley/smiley.png)
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tribeunited
fully equipped rock polisher
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Post by tribeunited on Jul 11, 2024 21:01:07 GMT -5
bump
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Post by 1dave on Jul 12, 2024 6:48:12 GMT -5
Thanks for all the intriguing photos! Iron is an interesting subject. When it starts forming in stars, it is the Death knell because it takes more energy to form than it produces, so the star will soon collapse. Earth's mantle contains a lot of iron, but somehow the continents have been depleted of it (they don't know how) and that is why continents float. Most meteorites are irons, earth gets over 100 tons of fresh new space dust every day! Meteorites don't "burn up" and disappear, they oxidase into magnetite - and fall to earth as black sand! Iron exists in a range of oxidation states from -2 to +7; however, on Earth it is predominantly in its +2 or +3 redox state and is a primary redox-active metal on Earth. The cycling of iron between its +2 and +3 oxidation states is referred to as the iron cycle. ![Cycle](https://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Iron_cycle7.png/1200px-Iron_cycle7.png) Dissolved by water, iron becomes yellow limonite, which dries to become red hematite, further drying it changes to goethite. Magnetite changing to goethite ![3](https://res.cloudinary.com/crosbj/image/upload/v1720783991/Chemestry/Elements/26-Iron/Magnetite-Goethite_001-C_n62bha.jpg) it provides many colors to the rocks it invades. ![3](https://res.cloudinary.com/crosbj/image/upload/v1633955312/Chemestry/Elements/26-Iron/ManyColorsOfIron_q1lchn.jpg) I live in an iron rich area and have studied it.
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dreamrocks
fully equipped rock polisher
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I got lucky this morning and was able to post this no others since
Member since November 2018
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Post by dreamrocks on Jul 12, 2024 12:31:31 GMT -5
I always enjoy reading your posts because they are always so informative.
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Post by rmf on Jul 13, 2024 4:56:25 GMT -5
These would be called assuming the streak is brown. Limonite Psuedomorphs after Marcasite #1 and the images in 1dave post you can see the are psuedomorphs after pyrite they still have the isometric crystal structures (cube and octohedron). the specimen above #14 show cockscomb pyrite psuedomorph
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bunnyfights
noticing nice landscape pebbles
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Member since May 2022
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Post by bunnyfights on Aug 1, 2024 10:54:24 GMT -5
Playing with 3D Models since these items have complicated geometry link![](https://p3d.in/iwxBI)
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bunnyfights
noticing nice landscape pebbles
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Member since May 2022
Posts: 88
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Post by bunnyfights on Aug 1, 2024 11:00:19 GMT -5
One more. So far it looks like a useful tool - link
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rockbrain
Cave Dweller
Member since January 2022
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Post by rockbrain on Aug 1, 2024 13:05:34 GMT -5
The 3d models are pretty awesome!
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dreamrocks
fully equipped rock polisher
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I got lucky this morning and was able to post this no others since
Member since November 2018
Posts: 1,174
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Post by dreamrocks on Aug 1, 2024 13:40:54 GMT -5
bunnyfights those 3d models are way super cool to see every angle
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bunnyfights
noticing nice landscape pebbles
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Member since May 2022
Posts: 88
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Post by bunnyfights on Aug 1, 2024 16:11:54 GMT -5
So far it's been fairly straight forward process. Just need a turntable, degaussing rod, some chicken wire and a gallon of 40 weight oil.
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tribeunited
fully equipped rock polisher
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Post by tribeunited on Aug 1, 2024 17:04:04 GMT -5
Omg I love it!! That 3d model is freaking amazeballs! I felt like I was looking into a little cave house on the second one. I want to be a little 3d person and go crawling in ![:)](//storage.proboards.com/forum/images/smiley/smiley.png)
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bunnyfights
noticing nice landscape pebbles
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Member since May 2022
Posts: 88
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Post by bunnyfights on Aug 2, 2024 9:50:12 GMT -5
Best one yet. Iron sulfite based hydrothermal plume - link
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