The lil red lady is her wife! Felsic! They’re mean and even meaner together. I love both of them
And then all my traditional sketches
Phylight is her twin sister who’s a prime! They were very close but after an incident that left Mafic abandoned on a planet, Phylight is under the impression her sister is long dead.
There’s more. But tumblr is an ass BUT I LOVEBHER SO MUCH
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Felsic is done! 🔥 I made him in part to finish off a plush tutorial that i have in the works, and i'm still haunted by accidentally destroying his figure so now he can live on in plush form.
Felsic is SO cuddly since i used a new type of silky stuffing and mochi minky in places. like oh my god hugging him feels so comforting. its part of why i omitted all of his spikes because he's going to be more of a hugging plush than just a display one haha.
oh man oh man i found the most beautiful seam of porphyry (some of it basically glomeroporphyritic) in the dacite-rhyolite mountains behind my parents place! i was out for only two hours and lugged a big heavy piece home with me along with some smaller ones:
look at that huge cryst on the left one.
it has some nice biotite in it as well. it was really fuckin wet (and sweaty!!) though and i just about made it back before it started pouring. looking forward to tomorrow to see how it looks when it dries in the sun
also, looks completely different from the very red dacite (im now thinking that one was more of a rhyolite?) i got from the same area last year, just maybe 100m apart.
the bedrock it came from. look at those three color shifts, left to right, dark to beige to spotted. this is a magma rich in felsic minerals that probably cooled real slow at first, then got mixed up with a mafic one via plate subduction, heated back up and had a big devastating yellowstone-like eruption ~1,9 billion years ago. add some tectonic drift, accretions, isostatic rebound, then some magma intrusions.
Hi, I'm sure this is an odd question, but this is a worldbuilding one:
I've been trying to make a mana source that is a geological form, and I'm not sure if I want to make it organically generated like coal, or rather minerally generated.
I've been toying around with mineral generation, but feel like if I make it three types of crystals that form in felsic rock, that would make it too abundant, with mundane rocks being rare on the surface
But if I make it mafic, it'll likely be incredibly *rare* on the surface, although the oceans being magical is a neat idea
So I'm wondering if it would make sense to create a sort of "middle ground" where it kinda forms between the two and can be commonly seen in both, but the real prize is the very active stones that contain relatively high concentrations of all three
I know this is probably a really weird question, but I figured it would be better to ask a geologist who actually studied how this all works irl
Tbh my mineralogy skills aren't what they used to be (my focus was really in Paleontology for my geology classes). I think it would make sense to go with the middle ground since to make the story work better. Apologies for not giving a highly technical answer. I do think doing something minerally generated is cool, but so is organically generated since mana can be seen as the fossilized magic basically. (Also opens the idea of mana being a non-renewable resource since stuff like coal is unlikely to form in the quantities that were previously formed)
Do you like, legit have a list of rocks you prefer for snacks?
"It is entirely dependent on the amount of silica or otherwise usable minerals inside of the rock.
Which is why Diamonds are absolutely garbage to eat.
Igneous Rocks? High in silica. Excellent snacks.
Certain Quartz? Mafic and Ultramafic? Terrible silca quantity, changes the taste. Feldspar has about a 53% silica content but the sodium and barium make up for it.
Rock Swag Tournament Round 1: Igneous Rocks Part 4
So these are two pretty fun igneous rocks, and the reason they're paired up is because neither of these two rocks has a defined composition. Granite is felsic, basalt is mafic, etc.
Now, many pegmatites are generally felsic, but it's not a requirement for pegmatites. Instead, what defines a pegmatite are the massive crystals it contains! I was taught, by a professor who does her research on pegmatites, that a good rule of thumb for when a rock is a pegmatite is when individual grains are bigger than a US quarter, but I've seen sources say grains have to be bigger than 1 cm. And, of course, in the sample shown above, those grains are more than 10 cm big.
All of that being said, one of the submitters to this competition ALSO has PhD research experience on pegmatites! I'll let them take it from here.
Pegmatites can have ENORMOUS crystals, rare minerals, and also gorgeous textures! Gemstone varieties of tourmaline, beryl, kunzite, etc. can come from pegmatites! My PhD research is on pegmatites XD
If this person would like to provide more information about pegmatites, I would be thrilled to hear it!
As for porphyry, while there is no compositional requirement, certain rocks like andesite and dacite are commonly porphyritic. One submitter actually sent in a specific type of porphyry called a rhomb porphyric (in English), named for its rhombic phenocrysts (the chocolate chips in the rock-cookie).
Here is what they have to say:
Found in Norway, east-Africa and Antartica. They look amazing! and can be found here in Denmark as a result of ancient glacier-movements - I am always super hyped to find one of these beauties. Plus the Danish name (rompeporfyr) sounds alot like rumpe-på-fyr meaning ass-on-guy (a more moderne translation might be Caked Up Dude) and I have been in love with that fact, and that stone, since I found out in grade 3.