#pyrrhotite

[oldearthminerals]

Pyrite After Pyrrhotite with Quartz, Bournonite & Calcite from Trepca Mine Complex, Kosovo

[er-cryptid]

Pyrrhotite

Natural History Museum of Denmark, Mineral Hall

[almightyhamslice]

Bonus material for Deep Dream’s court!!! yay

characters in these drawings come from this post

I designed their embassy properly n also decided Shardium should have a cluster in her lab. She is keping them on hand n case she finds suitable parts for them to rebuild their body. It’s not an easy process at all. Again like I said before feel free 2 ask questions or draw these gems if youd like to (pls credit me if you do) I will gladly share them :)

[fieriframes]

[Pyrrhotites.]

[iamthepulta]

Differences between pyrite and chalcopyrite? (With pictures?) 👀👀

xD

Okay! Initial differences! Pyrite is FeS2. Chalcopyrite (creatively named) is CuFeS2. Pyrite is an almost silvery yellow on a fresh surface; chalcopyrite is more of a bronzy yellow. The difference is subtle, but once your eye is tuned, you can almost always pick out bits of chalcopyrite in a sea of pyrite.

Pyrite is a little harder when scratched and the cleavage of the minerals helps too: pyrite almost always breaks with glittering sharp edges unless it's pretty oxidized or weathered. chalcopyrite is rough, almost like a smear. I think it's much closer to looking like gold, than real fool's gold, tbh.

It's really hard for a camera to properly catch that glint, but I gave it a shot:

This sample is a good 50/50 Py-Cpy, and I think the portions that look smoother are simply weathering from the sample being passed around. But you can still see Py is almost... brighter. And on the left, there's a very clear crystal of straight yellow Cpy that stands out.

This is more typical copper ore material. I think this sample was nearly all disseminated Cpy. Not great for differentiating the Py-Cpy color, but you'll see this all the time.

I just really wanted to talk about this one, lol. LOOK IT'S SO COOL IF BLURRY. I think it's an IOCG (iron oxide copper gold deposit type) massive sulfide sample. The bronze in the far lower left is Cpy, but the red in the middle is specular hematite (hematite that formed from hydrothermal solution rather than oxidized at the surface). The majority of the rock is magnetite, and I think some of the brassy-silver color in the center is pyrrhotite.

Pyrrhotite is pyrite one step to the left: Fex-1S. Because there's less iron, the Fe2+ has a very slight positive charge, just like magnetite where the Fe2+ offsets the charge balance of the other Fe3+ and S ions.

ANYWAY, this rock is nuts and I can't wait to cut it open and stick it under the microprobe~

BEST FOR LAST~

This is massive disseminated chalcopyrite, but it's been sitting in the drawer for 20 years, I think. Pyrite and chalcopyrite really pop when weathered. So the gold-brown is Cpy, and the silver 'clast' on the edge is Py.

-

Additional unnecessary but fun rambling about ore mineralogy:

Like, mineralogically I think the biggest difference is that Fe2+ is cubic and Cu1+Fe3+ is tetragonal so it can fit weirder stuff in. If you start thinking about the minerals as part of the whole, 1+/3+ ionic bonded and 2+ ionic bonded Things are the most stable position for metals to be in.

I love these minerals but whenever I want to describe them, the word that pops into my mind first is Evil. Pyrite and Chalcopyrite are fucking evil. xD

They're stable under a huge range of pressures, temperatures, and oxdiation/sulfidation states. Iron is 2+ in pyrite and 3+ in chalcopyrite, so you can substitute pretty much any 2+ or 1+ metallic ion in the Fe and Cu sites, and sulfur will happily substitute for any non-metal or metalloid.

This means you can have pyrite in your deposit, but it's pyrite with an abnormal amount of... idk, tellurium. And that will change the properties of your pyrite, but not pyrite itself. This is an 'abnormal impurity' until you form frohbergite, which is FeTe2. And BOTH do this. Both cpy and py are sliding scales for almost every single ion that fits.

So if you're trying to process chalcopyrite but you have a large silver impurity in the copper site, it might react poorly with the flotation chemicals we use to separate it from pyrite. Or maybe be harder to grind to the proper size, which will take up more energy. (This is gauged experimentally before they set up the processing circuit because that's a lot of money, and to some degree I'm exaggerating the effects. But a friend is also texting me right now asking how tellurium in pyrite will change oxidation rate, so impurities are a non-negligible factor.)

ANYWAY. Pyrite and chalcopyrite are fucking myths that should be abolished except they're fucking everywhere, so they never will be. Lol.

Chalcopyrite is more yellow. xD

.

(as the thermodynamic pressure of oxygen in the system increases, ((not oxygen content)), you'll have greater minerals of oxidation. i.e. Magnetite Fe2+Fe3+O4 has an Fe2+ where Hematite has Fe3+O3, its 3+ is at a higher oxidation state. Pyrrhotite is low enough that it's just Fe2+.)

[worldsandemanations]

Pyrrhotite with Quartz, Bournonite & Calcite from Trepca Mine Complex, Kosovo

[darkx-the-dragon-kn1ght]

Chapter 28- Part 2

A Frillish, this is easy! Just need Glare to use Crunch!

Oh come on, now-

Alright, continuing on, seeing even more Pyukumuku-

And more very useful items! And a whole building- that must be the Academy. If there's no other way to go this way, guess it's time to head down and fight those other Trainers.

Riolu, okay. Kirin can handle this, but let's slow down Riolu first with Paralysis.

And now, we can safely Zen Headbutt!

There's that message again- it must be an effect of the Field. But is that for all Psychic-type moves, or is Zen Headbutt in a special category?

You said it, lady- but with PULSE Muk defeated, that should be fixed in a matter of time.

So Pyrous Mountain is that volcano's name. A reference to pyrite, maybe? But there's also pyrolusite, pyromorphite, pyrope, pyrrhotite-

Oh, she doesn't even fight, she's just infodumping.

Like the bunch of them just over to the right over there?

Pyukumuku, guardian of the sand- I can get behind that, I'd vote for him. Poseidon's got nothing on him!

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[les-cailloux-du-ciel]

NWA 12564

MARS

Categories: ACHONDRITES, MARS, NWA 12564 [shergottite]

Northwest Africa 12564 (NWA 12564)

Purchased: 2019 Feb

Classification: Martian meteorite (Shergottite)

History: Purportedly found in Mauritania and purchased in February 2019 by Jaouad Chaoui and Rachid Chaoui from a Mauritanian dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Diabasic texture (mean grainsize ~1 mm). Composed predominantly of complexly-zoned clinopyroxene and maskelynite with accessory titanomagnetite, ilmenite, chlorapatite, merrillite, and pyrrhotite. Myrmekitic intergrowths consisting of silica polymorph + relatively sodic plagioclase are associated with more calcic maskelynite and regions of K-rich glass containing blebs of pyrrhotite are also present.

Geochemistry: Subcalcic augite (Fs22.5-48.6Wo32.2-25.4, FeO/MnO = 30-36, N = 3), ferropigeonite (Fs65.5Wo15.9, FeO/MnO = 39), large maskelynite grains (An48.6-53.0Or2.3-2.0, N = 2), plagioclase in intergrowth with silica polymorph (An34.0Ab62.4Or3.6).

Classification: Shergottite (aphyric, diabasic).

Specimens: 26.5 g including one polished thin section at UWB; remainder held jointly by J. Chaoui and R. Chaoui.

[skrillnetworkblog]

🌟 Catalina Resources (ASX: CTN): Rock Lodge Drilling Unveils Promising Gold Mineralisation Zones! 🌟

🔍 Key Highlights

➡️ Two diamond drill holes (351m total) completed at Rock Lodge Project in the Lachlan Fold Belt, NSW.

➡️ Extensive hydrothermal alteration with quartz-sulphide veining and brecciation.

➡️ Evidence of late-stage brittle deformation linked to gold mineralisation.

➡️ Laboratory assays underway; results expected in 8 weeks.

⛏️ Promising Drilling Insights

📌 Sulphide Zones: Pyrite, pyrrhotite, and traces of chalcopyrite, galena, and sphalerite identified.

📌 Structural Clues: Late-stage brittle deformation suggests a dynamic and active mineral system.

📌 Intrusive Potential: Copper and bismuth findings hint at a deep-seated intrusive source.

💬 Executive Chairman Sanjay Loyalka Speaks

"The visual results are encouraging, showcasing broad zones of alteration and quartz-sulphide veining. This drilling marks a significant step in unlocking the potential of this mineralising system."

🚀 Next Steps

➡️ Cutting and sampling of drill cores for lab analysis targeting gold and multi-elements.

➡️ Induced Polarisation (IP) survey planned to explore basalt-covered zones in the north.

📍 Rock Lodge Project: A Strategic Gold Prospect

🔸 Location: 163 sq km in the highly prospective Lachlan Fold Belt.

🔸 Potential: Known for hosting world-class deposits like Cadia and Lake Cowal mines.

🔸 Objective: First deep test of mineralisation system offers exciting exploration possibilities.

�� Catalina Resources continues to drive exploration forward at Rock Lodge. With its strategic location and early promising results, the project holds immense potential in the Australian gold sector.

📉 Current Share Price: A$ 0.003 (as of 20th November 2024).

👉 Learn more: https://www.skrillnetwork.com/catalina-resources-asx-ctn-diamond-drilling-at-rock-lodge-highlights-gold-mineralisation-and-sulphide-rich-zones

[eunoiareview]

facsimile

gritty weather. fire weather across the continent – but not here. here mold and rain make their homes. soggy, dripping sounds like chatter, like those words the television said. virtual blur. to fold paper is to shape it, give volume to what is meant to lie flat. in the act of creasing paper becomes sculptural like iron or marble or pyrrhotite. its future time to begin decay rustles. those…

[oldearthminerals]

Pyrite After Pyrrhotite with Calcite & Rhodochrosite from Trepca Mine Complex, Kosovo

[er-cryptid]

Pyrrhotite

Natural History Museum of Denmark, Mineral Hall

[almightyhamslice]

Some more funnee gems for Deep Dream Diamond’s court! I think they all live in this sorta... ‘embassy’ run by Chalcanthite? It must be located on an arid colony so the conditions don’t cause Chalcanthite to dissolve. So effectively all the other 9 gems in this image are her subordinates, except Shardium-- Shard is the de-facto leader in case something bad happens to Chalcanth. 

Zircon and Copper are compressed, Silver is undercooked, and Mangonium is twinned. Other than that, these guys r pretty average for their respective gemtypes. Zircon uses he/him pronouns, Silver uses they/them, and Mangonium is rather specific; when referring to the gem as a whole you use they/them, but their individual heads use she/her. All the other gems in this drawing are she/her!

I found all these gems in 1 mineshaft, and this isn’t even the largest ‘handful’ of gems I have found in one area in the game!! idk what I’ll do whenever I get to that.... 

Bonus material under the cut!:

isolated versions of the gems in the back of the drawing! I figured it’d be especially handy for Silver since their design was partially blocked by Axinite’s hand. 

Shardium and Chalcanthite! GFs, even. Fun fact, I downloaded 3 different brushes specifically for Shard’s hair effect. This sketch was made before I found ‘em!

[iamthepulta]

I've never had anyone ask me what my most hated mineral is, and before now, I wouldn't have had an answer "they're all good dogs Brent"-style. But Pyrrhotite is the worst. It looks exactly like Pyrite and generally forms with Magnetite so you can't tell if you're insane or the Magnetite is just that strong.

Fuck Pyrrhotite, amen.