Mineral Cup & Ore Cup
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mineralcup.bsky.social
Mineral Cup & Ore Cup
@mineralcup.bsky.social
Which mineral is the best of them all? Campaign & vote in #MinCup each September. #OreCup starts November 3, 2025! www.MineralCup.org

Kyanite photo credits: Smithsonian Institution
Reposted by Mineral Cup & Ore Cup
My difficulty this time is they can both be art supplies. :/
November 10, 2025 at 7:12 PM
Whoops! Accidental jargon in our alt text. 😂
November 10, 2025 at 8:11 AM
Vote then immediately fill out the player’s survey with a note in the Other section. We can crosscheck for you.
November 10, 2025 at 8:10 AM
Reposted by Mineral Cup & Ore Cup
found a pic of my sample

it was originally from the collection of Prosper Williams, a somewhat famous mineral collector and dealer

www.thefreelibrary.com/Died%2C+Pros...
November 10, 2025 at 4:46 AM
Reposted by Mineral Cup & Ore Cup
Did! #VoteCopper #OreCup
Not just pennies, copper has been a key part of history, a major player in world economics.
copper "manillas" in Western Africa, copper jewelry among the Powhatan and other Indigenous Americans, it's role was vital in the 17th century & before.
November 9, 2025 at 3:23 PM