www.mineralcollection.eu/product/2115...
#chalcopyrite #tetrahedrite #sulfides #sulfarsenites #rudnany #minerals #rocks #crystals #stones

Bar chart of Molybdenite defeating Tetrahedrite by a 8% margin

Bracket updated so that in the round 2 semifinals, Copper is continuing to the semifinals against an undetermined contender, and on the opposite side, Molybdenite against an undetermined contender.

Congratulations, #Molybdenite, your victory is shining a light to #OreCup R2M1.

Condolences, #Tetrahedrite, you were sharp but just not enough to make the cut.

Last call for #OreCup R1M2 molybdenum (and rhenium) ore #Molybdenite vs copper (and silver) ore #Tetrahedrite.

Vote: www.mineralcup.org/vote-results...
Results:

Come on, #mathsky

Vote for #Tetrahedrite!

Only a few hours left for #OreCup R1M2 #Molybdenite vs #Tetrahedrite. Did you pick a favourite and vote?

Vote: www.mineralcup.org/vote-results...
Results:

Voted for #Tetrahedrite solely because one of the pictures had it hanging out with #Rhodochrosite! 😆

Vote in Round 1 Match 2 It’s a matchup of extremely shiny and geometrically-distinctive ore minerals as soft, greasy Molybdenite faces off against the dark and looming tetrahedrons of Tetrahedrite. Are you championing the molybdenum (and rhenium) ore or the copper (and silver) ore? Molybdenite from Québec, Canada flaky hexagon of shiny grey molybdenite embedded in white quartz. Credit: Eric D. Fritzsch Molybdenite, powellite, and microcline from New Jersey, USA An extremely shiny, almost liquid-looking molybdenite vein in a matte orange, green, and white rock. Credit: Harold Moritz Molybdenite from Queensland, Australia A silvery chunk of molybdenite with a crackly texture. Credit: Marc Gravel Molybdenite and chalcopyrite from Tasmania, Australia Flecks of dark grey molybdenite on a speckled tan rock. Credit: Bob Beattie Molybdenite from Québec, Canada A crisp, dark molybdenite hexagon cross section inside clear quartz. Credit: Kelly Nash Molybdenite from British Columbia, Canada Long grey molybdenite crystals at odd angles to each other on a red matrix. Credit: John Sobolewski Molybdenite forms greasy, soft silver hexagonal flakes. While this molybdenum ore looks and feels similar to graphite, it is denser, has a more blue tint in its streak when rubbed on paper, and is shinier. Molybdenite's name comes from μόλυβδοζ, meaning "lead," and was originally used by ancient Greeks to describe a variety of similar soft, grey, shiny minerals including lead ores and graphite. The mineral now known as molybdenite (MoS₂) didn't lay exclusive claim to the name until the late 1700s after the discovery of the element molybdenum. The ore mineral is typically found in high temperature hydrothermal zones. Molybdenite is the primary ore of molybdenum, which is used to produce high-temperature alloys, and when even small amounts are added to steel alloys it increases toughness, strength, hardness, heat resistance, and corrosion resistance. Molybdenite has a layered structure of alternating sheets of molybdenum and sulfur. This slipperiness and highly fragile perfect cleavage make molybdenite an excellent lubricant and the namesake for LiquiMoly, an additive for high performance motor oils and sponsor of Formula 1 motorsports. Trace amounts of rhenium substitute for molybdenum, with concentrations reaching up to 1 to 2%, high enough to be a valuable byproduct of processing molybdenite. Rhenium is used in metal alloys in wind turbines and automobile catalysts. The parent/daughter ratio of radioactive isotope rhenium-187 and osmium-187 make molybdenite useful for geochronology and dating geologic timescales. Ingesting small amounts of molybdenite is normal, and even an essential nutrient for human health, but it can be hazardous in larger quantities. While it can be used as a fertilizer, do not eat fistfuls of molybdenite-rich dirt. Huffing molybdenite dust is similarly discouraged. Molybdenite's role in producing durable steels for wind turbines, pipelines, and electric vehicle infrastructure makes it indispensable in the transition toward renewable energy systems, ensuring that molybdenite will remain a critical industrial mineral for decades to come. Tetrahedrite and quartz from Pasco, Peru Dark cool grey tetrahedrite crystals with some iridescent faces. Credit: Harold Moritz Tetrahedrite from Pasco, Peru A craggy mass of blocky tetrahedrite crystals with a lot of cool-toned iridescence. Credit: Harold Moritz Tetrahedrite, siderite, quartz, and sphalerite from Czech Republic Black tetrahedrite points and clear quartz points with a sprinkling of other yellowish minerals. The tetrahedrite has a streaky texture. Credit: Harold Moritz Tetrahedrite, siderite, and sphalerite from Huancavelica, Peru Blue-black tetrahedrite chunks with yellowish siderite and sphalerite along the sides. Credit: Kelly Nash Tetrahedrite, rhodochrosite, and quartz from Ancash, Peru Shiny black tetrahedrite peeking out amongst rosy pink rhodochrosite. Credit: Tony Peterson Tetrahedrite from Colorado, USA Tetrahedrite with a silvery and slightly iridescent sheen. Credit: Eric D. Fritzsch Tetrahedrite forms dark metallic crystals with a striking tetrahedral shape. It's appearance inspired both a former and current name: originally German "fahl" for ash-coloured and "erz" for ore in tribute to its colour, falherz was renamed in 1845 by Wilhelm Karl von Haidinger to acknowledge its distinctive shape. Tetrahedrite is a mineral subgroup, a collection of minerals that share a similar structure but with variations in their chemical composition. The tetrahedrite subgroup contains at least 7 distinct named minerals, all following the chemical formation of a copper antimony sulfosalt (Cu₆[Cu₄ (X)₂]Sb₄ S₁₃) where the final element X can be Fe2+, Zn, Cd, Hg, or other elements. Silver can also substitute in for copper, often up to several percent by weight. While less abundant than some other copper ores, tetrahedrite's potential to extract silver along with copper make it economically attractive. This dual purpose ore is recognized in the video game Dwarf Fortress, where smelting tetrahedrite nuggets produces a mix of copper and silver bars. Antimony, mercury, or arsenic-bearing tetrahedrite can complicate ore processing as the heavy metals pose health and environmental hazards. Tetrahedrite forms in low to moderate temperature hydrothermal veins and contact metamorphic deposits. Sulfosalts like tetrahedrite have some of the complicated crystal structures, and this may be in part because lower temperatures allow the metal atoms have a higher degree of ordering during crystallization. With its dual potential as both a copper and silver ore, this mineral plays an understated but meaningful role in our past and future. Copper and silver are both highly prized for their beauty and utility, with copper's contribution as a backbone of electrical wiring, renewable energy grids, and electric vehicle production essential to the Green Energy Transition. Molybdenite ran in Mineral Cup 2025, where it was defeated during round 2 by semifinalist dioptase. Tetrahedrite has never competed in Mineral Cup. #OreCup Round 1 Match 2 * Molybdenite Tetrahedrite Thank you! **Please vote only once per player.** Multiple players may vote using the same device. **Voting for each match starts and ends at 00:00 GMT.** Due to site limitations, the polls will continue to be visible, but only votes cast in the 24-hour period will be tallied. time remaining

#DwarfFortress fans: #Tetrahedrite needs your vote!

https://www.mineralcup.org/vote-results/vote-r1m2

Vote in Round 1 Match 2 — Mineral Cup & Ore Cup Vote in Molybdenite vs Tetrahedrite Credit: Eric D. Fritzsch and Harold Moritz

#OreCup R1M2 is soft & slippery #Molybdenite vs dark angular #Tetrahedrite. Are you championing the molybdenum & rhenium ore or the copper & silver ore?

It’s still a tight race with about a 20-vote margin.

Vote: www.mineralcup.org/vote-results...
Results: www.mineralcup.org/vote-results...

Sorry, but "soft and greasy" doesn't do it for me. Team #Tetrahedrite

Have you voted in #OreCup R1M2 #Molybdenite vs #Tetrahedrite?

Vote: www.mineralcup.org/vote-results...
Results:

Large tetrahedrite crystal

I voted for #tetrahedrite this time, because it is a new mineral I did not know and look at these beautiful crystals.

📸Robert Lavinsky

#OreCup25⚒️

#Molybdenite is just a bit too shiny for my liking. #Tetrahedrite though looks perfect, seems super interesting and has never competed anywhere. Go underdog!

Results for Round 1 Match 2 — Mineral Cup & Ore Cup Live results for Molybdenite vs Tetrahedrite

Soft, greasy #Molybdenite faces off against the dark and looming tetrahedrons of #Tetrahedrite for today’s #OreCup match! It’s close so far, repeatedly flipping and currently under a 10-vote margin.

Vote: www.mineralcup.org/vote-results...
Results:

OK, #kdrama, #jdrama & #cdrama friends: #OreCup R1M2:

Let's stick with #copper for the #sageuk, #wuxia & #xianxia #bronze weaponry & add a metal used for the ornate jewelry in these dramas: #silver.
Tetrahedrite is a #copper salt that sometimes yields silver, too.

So vote #Tetrahedrite
1 vote only

youtu.be/geSScmBWBtE?...

#OreCup #Tetrahedrite

What makes the greatest ore, tho? Sulfides crystallize at higher temperatures and have simpler molecular structures. Sulfosalts precipitate at lower temperatures, have greater solubility, plus bonus semi-metals. I’m voting for the sulfosalt, #Tetrahedrite.
#OreCup25 ⚒️ 🧪

You had me at tetrahedrons, and look at the twinning! #tetrahedrite

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

I'm voting for #Tetrahedrite because it just looks so much cooler. #OreCup

#OreCup R1M2 is a matchup of extremely shiny and geometrically-distinctive ore minerals for #Molybdenite vs #Tetrahedrite.

Vote: www.mineralcup.org/vote-results...
Results:

Tetrahedrite - Wikipedia

Hey #OreCup People …

Is #tetrahedrite still a potential option for building thermoelectric devices? 🤔

en.wikipedia.org/wiki/Tetrahe...