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@silicatefondue.fosstodon.org.ap.brid.gy Sep 24, 2026, 9:00 PM

Left: Graphite in Quartzite, from Ticonderoga, New York.

Right: Graphite in red cedar and yellow paint

#MinCup26 #Graphite #PencilLead #Metamorphism #Ticonderoga #NewYork

Dark shiny layer of graphite attached to host quartzite. From our teaching collection (pen cap for scale). From Ticonderoga, New York.

Ticonderoga pencils that used to be made from Ticonderoga graphite and red cedar wood.

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