Discover and read the best of Twitter Threads about #muscovite

Most recents (3)

Literally nothing about the debate tonight could possibly change how I vote, and I don’t want to deal with either rage or despair from hearing his horrid voice and cruel ideals.

So I’m focusing elsewhere.

On geologic glitter, specifically.
Today’s #MinCup2020 battle is a showdown between glitter vs magnetics.

I am forever & always #TeamShiny.
Which is losing.
#Magnetite is a pretty cool mineral. It’s key to a lot of geophysics, I like collecting it with a fridge magnet on beaches, and it makes for a cool high-impact low-effort geo demo.

But then there’s #Muscovite, a subset of mica & the essence of #TeamSparkle. It’s SO SHINY.
Read 14 tweets
I usually campaign for #Biotite as a sad substitute for #Muscovite, furiously accusing #Apatite as living up to its name as the Great Deceiver.

But mica is still in the cup & Apatite is absolutely #TeamShiny.
#Biotite is also #TeamShiny and I very much appreciate the easy ID, but with moscovite still in the running I’m cool with it staying in Round 1.

Pro-mica thread from last year:
Apatite is in your TEETH, which alone is creepy-cool enough to earn your vote.

Mini-thread on apatite x biomineralization:
Read 5 tweets
I had exactly 30min entry-to-exit to explore @hmns.

I’d heard they have a solid collection of trilobites & the massive cut blue sapphire Siren of Serendip is a special exhibit.

But with the clock ticking down, I raced up the stairs & tumbled into Cullen Hall of Gems & Minerals. Museum wall sign of icons indicating different types of exhibits
#Crocoite: Shiny red-orange spiketastic lead chromate.

Despite being named for colour-matching saffron, lead makes it firmly “Do Not Lick.”

This particular spikefren is from Adelaide Mine, Tasmania, sticking with “everything cute in Australia can secretly kill you” theme. Adamantine red-orange long prismatic crystalsAdamantine red-orange long prismatic crystalsAdamantine red-orange long prismatic crystals
#Fluorite: a honkin’ massive cube of calcium fluorite with that particular dull-waxy translucence I wanna pet so bad.

No UV light to see if it’d fluoresce pretty colours for me.

From Nikolaevskiy Mine in Russia where hot sulfide solutions crystallized in limestone caverns. Large translucent pale green cube with smaller cube to sideClose-up of cubical facets
Read 65 tweets

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