DaVegaNL Posted August 11, 2019 Share Posted August 11, 2019 Rocks. That's all. Link to comment Share on other sites More sharing options...
sillls Posted August 11, 2019 Share Posted August 11, 2019 Rocks. That's all. Since you pointed out awhile back that you are a geologist, I wanted to know why some rocks seem to form in uniform patterns. This link below shows some Magnetite but it looks as if someone through together a bunch of triangles. Why would something be found like that? https://en.wikipedia.org/wiki/Magnetite You can click on the photo to get a closer look. Link to comment Share on other sites More sharing options...
Sigil_Thane Posted August 11, 2019 Share Posted August 11, 2019 Since you pointed out awhile back that you are a geologist, I wanted to know why some rocks seem to form in uniform patterns. This link below shows some Magnetite but it looks as if someone through together a bunch of triangles. Why would something be found like that? https://en.wikipedia.org/wiki/Magnetite You can click on the photo to get a closer look. Crystals. Link to comment Share on other sites More sharing options...
The Gronk Posted August 11, 2019 Share Posted August 11, 2019 <snipped for space> The short answer is crystallization. It happens when the atoms have the opportunity to arrange themselves into repeating structures. The variables are pressure, heat, time and weathering (plus others). https://en.wikipedia.org/wiki/Crystallization There are some oddities such as the chernobylite crystals which are only found in the corium at Chernobyl. There are also crystals that have a structure that repeats over time, never truly becoming a single solid crystal. These are called time-crystals are are about the single most Dr Who sounding substance we have found :-) https://en.wikipedia.org/wiki/Time_Crystal Link to comment Share on other sites More sharing options...
sillls Posted August 11, 2019 Share Posted August 11, 2019 Crystals yes, sorry about that. But look how at the straight lines. How can that happen naturally? Link to comment Share on other sites More sharing options...
The Gronk Posted August 12, 2019 Share Posted August 12, 2019 Crystals yes, sorry about that. But look how at the straight lines. How can that happen naturally? Oh, right :-) That largely depends on how the molecules fit together. Different shaped molecules will tessellate together in different patterns. Cubic and hexagonal are very common ones. This vid explains it far better than I could... This vid shows salt crystals forming but the process is pretty much the same for any crystal. Link to comment Share on other sites More sharing options...
FileMachete Posted August 12, 2019 Share Posted August 12, 2019 Crystals yes, sorry about that. But look how at the straight lines. How can that happen naturally? As Gronk said, Chemistry bits That first vid is really well done (haven't watched the second yet). Reminded me of how I used to remember the difference between ionic & covalent bonds. -- I'd think "Iconic" instead of "ionic", as Iconic sort of means 'one' or 'singular' -- for covalent, well, it was easy to think of this as 'codependent' or 'couple'. more than one. (had a wild n crazy gf that semester) If you want more you might try searching for "chemistry molecular bonds" & "chemistry cubic structures". For some really cool (to me) stuff you might look at https://en.wikipedia.org/wiki/Tempering_(metallurgy) since tempering is basically the intentional manipulation of how much and what type of crystalline structures a piece of steel will have. Link to comment Share on other sites More sharing options...
sillls Posted August 12, 2019 Share Posted August 12, 2019 Oh, right :-) That largely depends on how the molecules fit together. Different shaped molecules will tessellate together in different patterns. Cubic and hexagonal are very common ones. This vid explains it far better than I could... This vid shows salt crystals forming but the process is pretty much the same for any crystal. Thanks for the two links. The second one was even better. But one thing that I don't understand is how do you get squares and triangles out of round drops of salty water. Some did seem to start forming round but still formed straights edges. Seems that they should have formed round like the drop but they didn't. Link to comment Share on other sites More sharing options...
The Gronk Posted August 12, 2019 Share Posted August 12, 2019 Thanks for the two links. The second one was even better. But one thing that I don't understand is how do you get squares and triangles out of round drops of salty water. Some did seem to start forming round but still formed straights edges. Seems that they should have formed round like the drop but they didn't. Well spotted that the centres are often far more chaotic than the full grown crystal. :-) I'll try to explain this in simpler terms. The molecules have an easier time bonding with other molecules if the pattern has no flaws. Over the course of time the areas where the pattern has no flaws grow faster than those areas that do have flaws. What you're seeing is that part of the pattern which has grown the fastest, often swamping and smothering the other crystal edges that are forming and stopping them in their tracks. This causes a chaotic centre surrounded by a very uniform shell. Link to comment Share on other sites More sharing options...
sillls Posted August 12, 2019 Share Posted August 12, 2019 Well spotted that the centres are often far more chaotic than the full grown crystal. :-) I'll try to explain this in simpler terms. The molecules have an easier time bonding with other molecules if the pattern has no flaws. Over the course of time the areas where the pattern has no flaws grow faster than those areas that do have flaws. What you're seeing is that part of the pattern which has grown the fastest, often swamping and smothering the other crystal edges that are forming and stopping them in their tracks. This causes a chaotic centre surrounded by a very uniform shell. So it's kind of like a key and a lock. The atoms fit best in a uniform pattern. Pulling other atoms to it as it grows and attach themselves best at those points. I see now. Thanks. Link to comment Share on other sites More sharing options...
Gazz Posted August 12, 2019 Share Posted August 12, 2019 Crystals yes, sorry about that. But look how at the straight lines. How can that happen naturally? Because crystals are natural. =P If a magma pocket very slowly cools down then crystals can form. Minerals have very specific axis along which they want to bond, given the chance. The random part is the occurrence of the conditions, not the shape of the crystal. Link to comment Share on other sites More sharing options...
DaVegaNL Posted August 12, 2019 Author Share Posted August 12, 2019 Since you pointed out awhile back that you are a geologist, I wanted to know why some rocks seem to form in uniform patterns. This link below shows some Magnetite but it looks as if someone through together a bunch of triangles. Why would something be found like that? https://en.wikipedia.org/wiki/Magnetite You can click on the photo to get a closer look. Yeah it's due to the crystalline shapes certain mineral compounds form in nature. I'm not a chemist, so I can't explain exactly why these crystal forms take the form they have, but think for example of carbon. In graphite for example, the carbon atoms are arranged quite differently then in diamond, even though they are completely made up of pure carbon, resulting in very different material properties. Some minerals (like galena, the lead ore modelled here in-game) have a rather cubic shape, whilst others are more hexagonic or monoclinal etc. Hope this helps! - - - Updated - - - The short answer is crystallization. It happens when the atoms have the opportunity to arrange themselves into repeating structures. The variables are pressure, heat, time and weathering (plus others). https://en.wikipedia.org/wiki/Crystallization There are some oddities such as the chernobylite crystals which are only found in the corium at Chernobyl. There are also crystals that have a structure that repeats over time, never truly becoming a single solid crystal. These are called time-crystals are are about the single most Dr Who sounding substance we have found :-) https://en.wikipedia.org/wiki/Time_Crystal Dude, you are stealing my thunder! Even though weathering does not have an influence on the pure shape of the crystals. Link to comment Share on other sites More sharing options...
DaVegaNL Posted August 12, 2019 Author Share Posted August 12, 2019 Because crystals are natural. =P If a magma pocket very slowly cools down then crystals can form. Minerals have very specific axis along which they want to bond, given the chance. The random part is the occurrence of the conditions, not the shape of the crystal. *Throws down my pet-rock* Looks like everybody is a geologist here now! ^-^ Yeah you are right. If magma cools sufficiently slow you can get very nice and large crystals, also called plutonic rocks (granite, for example). If the magma extrudes to the surface, it cools down much more rapidly. Because of this, there is not enough time to form large crystals, because of which you can get a more 'homogenous' rock (basalt, for example). Link to comment Share on other sites More sharing options...
seryie8a7 Posted August 12, 2019 Share Posted August 12, 2019 should we expect the experimental and 18 in the 20 days Link to comment Share on other sites More sharing options...
A Nice Cup of Tea Posted August 12, 2019 Share Posted August 12, 2019 *Throws down my pet-rock* Looks like everybody is a geologist here now! ^-^ Yeah you are right. If magma cools sufficiently slow you can get very nice and large crystals, also called plutonic rocks (granite, for example). If the magma extrudes to the surface, it cools down much more rapidly. Because of this, there is not enough time to form large crystals, because of which you can get a more 'homogenous' rock (basalt, for example). We should be able to make obsidian knives and spear tips. Link to comment Share on other sites More sharing options...
The Gronk Posted August 12, 2019 Share Posted August 12, 2019 Dude, you are stealing my thunder! Even though weathering does not have an influence on the pure shape of the crystals. I'm so sorry about this, the pedantry is too hard to resist... Technically, a stalactite is a crystal sometimes made entirely from the weathering of the rocks above. Link to comment Share on other sites More sharing options...
DaVegaNL Posted August 12, 2019 Author Share Posted August 12, 2019 I'm so sorry about this, the pedantry is too hard to resist... Technically, a stalactite is a crystal sometimes made entirely from the weathering of the rocks above. Yeah that's true, but it's pedantry like you said But calcite is still calcite, whether it is deposited in-situ, is cemented into the sedimentary rock, or whether is dripping down a cave ceiling. Link to comment Share on other sites More sharing options...
Gazz Posted August 12, 2019 Share Posted August 12, 2019 We should be able to make obsidian knives and spear tips. Sounds like a mod because in this game it's not super hard to get iron tools so it would be a largely pointless feature. Link to comment Share on other sites More sharing options...
SnowDog1942 Posted August 12, 2019 Share Posted August 12, 2019 I'm so sorry about this, the pedantry is too hard to resist... Technically, a stalactite is a crystal sometimes made entirely from the weathering of the rocks above. First you think u know more than gaz about 7 days to die coding. Then you think you know more than MadMole about game design. THEN you think you know more than Davega about rocks. Next thing you know, you will be trying to teach me how to be a stripper. Link to comment Share on other sites More sharing options...
The Gronk Posted August 12, 2019 Share Posted August 12, 2019 First you think u know more than gaz about 7 days to die coding. Then you think you know more than MadMole about game design. THEN you think you know more than Davega about rocks. Next thing you know, you will be trying to teach me how to be a stripper. You want more tips? The trick is to spin around your own pole :-) Everyone can make a mistake, I'm no exception. It's not obvious that a stalactite is a crystal and, if memory serves, not something I was taught in either science or geography. The horrible thing? I generally google for verification these days instead of education. I've been a pedant for so long I've pretty much researched everything that interests me. You want to see me bamboozled? Ask me anything about popular culture :-) Link to comment Share on other sites More sharing options...
SnowDog1942 Posted August 12, 2019 Share Posted August 12, 2019 You want more tips? The trick is to spin around your own pole :-) Lmao! Link to comment Share on other sites More sharing options...
DaVegaNL Posted August 12, 2019 Author Share Posted August 12, 2019 First you think u know more than gaz about 7 days to die coding. Then you think you know more than MadMole about game design. THEN you think you know more than Davega about rocks. Next thing you know, you will be trying to teach me how to be a stripper. This made me lol in the office man..! - - - Updated - - - You want more tips? The trick is to spin around your own pole :-) Everyone can make a mistake, I'm no exception. It's not obvious that a stalactite is a crystal and, if memory serves, not something I was taught in either science or geography. The horrible thing? I generally google for verification these days instead of education. I've been a pedant for so long I've pretty much researched everything that interests me. You want to see me bamboozled? Ask me anything about popular culture :-) Haha no worries mate.. No (rock-)hard feelings! Link to comment Share on other sites More sharing options...
meganoth Posted August 12, 2019 Share Posted August 12, 2019 *Throws down my pet-rock* Looks like everybody is a geologist here now! ^-^ Yeah you are right. If magma cools sufficiently slow you can get very nice and large crystals, also called plutonic rocks (granite, for example). If the magma extrudes to the surface, it cools down much more rapidly. Because of this, there is not enough time to form large crystals, because of which you can get a more 'homogenous' rock (basalt, for example). should we expect the experimental and 18 in the 20 days Sorry, see above, 7D2D has to cool off sufficiently slow so that it can get some nice regular features. Link to comment Share on other sites More sharing options...
DaVegaNL Posted August 12, 2019 Author Share Posted August 12, 2019 Sorry, see above, 7D2D has to cool off sufficiently slow so that it can get some nice regular features. Yeah absolutely! Cool-down times are of course in the thousands of years, which is in the same order of magnitude as an alpha-cycle (yes, yes, Roland, that's only counting the whole Alpha updates. If you want to count the point-updates as well, its gets longer). Link to comment Share on other sites More sharing options...
meganoth Posted August 12, 2019 Share Posted August 12, 2019 Yeah absolutely! Cool-down times are of course in the thousands of years, which is in the same order of magnitude as an alpha-cycle (yes, yes, Roland, that's only counting the whole Alpha updates. If you want to count the point-updates as well, its gets longer). And you even left out the streamer-exclusive eons so that the time frame is still conceivable to our tiny human brains. Link to comment Share on other sites More sharing options...
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