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 Monoclinic cummingtonite is compositionally similar and polymorphic with orthorhombic anthophyllite, which is a much more common form of magnesium-rich amphibole, the latter being metastable. Cummingtonite shares few compositional similarities with alkali amphiboles such as arfvedsonite, glaucophane-riebeckite. There is little solubility between these minerals due to different crystal habit and inability of substitution between alkali elements and ferro-magnesian elements within the amphibole structure. 
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Jun 23, 2021 09:16
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Gneiss!
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Jun 23, 2021 09:38
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That rock looks like it’s been in someone’s Cummingtonite jar for a long time
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Jun 23, 2021 10:28
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Reiche posted:That rock looks like it’s been in someone’s Cummingtonite jar for a long time Rock? What the gently caress!
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Jun 23, 2021 10:30
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I'm not thinking about it
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Jun 23, 2021 10:43
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enjoy getting your rocks off op
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Jun 23, 2021 11:30
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I just know that this ugly thing is going to leave residue over everything.
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Jun 23, 2021 11:39
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https://www.youtube.com/watch?v=xnjcVvO40bg
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Jun 23, 2021 11:51
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But how does it taste?
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Jun 23, 2021 11:58
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cummingtonite is pretty rare because most neolithic peoples would simply make the loser eat the cracker. only the forward thinking thought to bury it
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Jun 23, 2021 12:05
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goatface posted:But how does it taste? Very gneiss
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Jun 23, 2021 12:10
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Can you like shape and polish it so it looks super shiny? That'd be cool.
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Jun 23, 2021 12:25
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I dunno, it looks kinda crusty.
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Jun 23, 2021 12:57
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The worst part about being a geologist is all the rock puns.
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Jun 23, 2021 13:05
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No this is cummingtonite
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Jun 23, 2021 13:08
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For those about to rock, we salute you!
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Jun 23, 2021 13:13
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drat, if you came out a giant mineral like that, maybe you oughta have a doctor check your kidneys or prostate or balls or something. That’s not normal yowza.
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Jun 23, 2021 13:19
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Pussigumption
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Jun 23, 2021 13:23
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The second worst part about being a geologist is how often you have to listen to a miner bang a member of the cleaning staff.
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Jun 23, 2021 13:27
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i already came last night. let's not cum ahead of ourselves
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Jun 23, 2021 13:40
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I'm going to make you quartz across the room
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Jun 23, 2021 14:30
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Remember when you were a kid and you thought rocks were cool. You'd have a favorite rock you would find and take it home and keep it.
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Jun 23, 2021 15:45
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Oi OP ya navvy chav... cummingtonite? More like bumming then cumming tonight!
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Jun 23, 2021 17:33
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Personally im partial to the mineral Jizzingthismorning
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Jun 23, 2021 17:38
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goatface posted:But how does it taste? It tastes a little Dickite.
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Jun 23, 2021 17:42
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this feels like it belongs here https://www.youtube.com/watch?v=Nx4Rem5hI60
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Jun 23, 2021 17:49
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Inexplicable Humblebrag posted:enjoy getting your rocks off op
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Jun 23, 2021 17:57
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Full Metal Jackass posted:Remember when you were a kid and you thought rocks were cool. You'd have a favorite rock you would find and take it home and keep it. and lick it
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Jun 23, 2021 17:59
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Wait, rocks aren't cool? 
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Jun 23, 2021 19:05
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Cummingtonite? Nah. It's taconite.
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Jun 23, 2021 19:31
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If I were an old timey prospector or a time traveler I would rename minerals to horny names. "Take a look at this, I've discovered a vein of Cumonmyballs" "Ah, that's only Fool's Labia"
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Jun 23, 2021 19:41
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They only call it uranium cause somebody tried to stick it up their rear end
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Jun 23, 2021 19:43
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this thread is schist
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Jun 24, 2021 03:06
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Geologists are real bad at coming up with names.
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Jun 24, 2021 03:13
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Pawn 17 posted:Geologists are real bad at coming up with names. don't sign your posts
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Jun 24, 2021 03:17
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Pawn 17 posted:Geologists are real bad at coming up with names. Some other real minerals are Dickite and Fukalite.
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Jun 24, 2021 03:31
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BigBadSteve posted:Some other real minerals are Dickite and Fukalite. Checks out.
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Jun 24, 2021 11:32
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naem posted:this thread is schist welshite
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Jun 24, 2021 11:45
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