#mincup25 — Public Fediverse posts

Native copper in a sedimentary conglomerate. It is proposed that detrital hematite reacts with copper sulfate solutions to reduce the copper and the fluids carry away the iron and sulfur.

From Calumet and Hekla Mine, Michigan. University of Waterloo Earth Sciences Museum Collection.

#OreCup25 #MinCup25 #Copper #Michigan #UpperPeninsula #UWaterloo

The Flemish masters painted on #copper as it provided a smooth, luminous surface that allowed fine detail and durability of the exquisite works, like this self portrait of a laughing Rembrandt. #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology🍎 🔭🪐

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#MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology🍎 🔭🪐

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Nice article on the type locality of #carrollite : Carroll County, Maryland and the Patapsco Mine.

https://jamesrada.com/carrollite-the-mineral-once-found-only-in-carroll-county/

#OreCup #OreCup25 #MinCup25 #Maryland #Sykesville #Cobalt

Octahedral crystals, polysynthetic twinning striations, super conductivity, and iridescent sheen? Yes, please. #carrollite #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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#MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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#OreCup #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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#OreCup #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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#OreCup #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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#OreCup #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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You had me at tetrahedrons, and look at the twinning! #tetrahedrite #OreCup #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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mindat.org/gm/3924

#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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A pseudomorph (false form) is when one mineral changes to another, but keeps the original form. #copper #OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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Voting for minerals is back this week with the new #OreCup! I am taking my art and physics applications voting scheme from the #MinCup25, but the #OreCup25 is making it hard pitting 2 strong contenders against each other in the first round! Found worldwide Copper & Galena have been used since antiquity (see the woodcut of early Galena smelting via Agricola here). Both used for pigments (as with the copper-based verdigris used in this Van Eyck).

🧵1/2
#scicomm #EarthSci #minerals #arthist

Remember dendrites (from the Greek word dendron meaning tree)? They are tree-like minerals that form under special conditions. There is a lovely dendritic #copper sample on the upper right. Thanks Susie! More in comment 👇🏼 #OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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#Galena is a primary ore mineral for lead.

Nearly every car on the road today, even EVs, have a lead battery for powering accessories.

Lead batteries are the most recycled product (over 99% in the US) and overall lead recycling (76%) is second only to gold.

#OreCup #OreCup25 #MinCup25 #CriticalMinerals

The Flemish masters painted on #copper as it provided a smooth surface that allowed fine detail and durability of their exquisite works, like this self portrait of Rembrandt. #OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

Naturally occurring pure copper is called “native” copper & is formed in veins & fractures by super-heated mineral-rich fluids often associated with volcanic activity. My sample shown below. Get the lead out & vote #copper! #OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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#MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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And here are color versions of the 32 minerals in #MinCup25 placed on the bracket.

Winner #Kyanite, runner up #Tugtupite

Drawings by Fernando Salvaterra on BlueSky(@salvaterra.bsky.social)

Fernando Salvaterra on BlueSky(@salvaterra.bsky.social) posted sketches of all 32 minerals competing in this year's Mineral Cup.

#MinCup25 #Minerals

#MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭 www.mineralcup.org/2025

2025 — Mineral Cup

#MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐

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