Minerals with Willsey: Hematite, Magnetite, Galena, and Pyrite
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- čas přidán 11. 10. 2022
- Here is the last video in the mineral series before we turn our attention to the wonderful world of rocks. With this farewell video, geology professor Shawn Willsey focuses on four metallic minerals: hematite, magnetite, galena, and pyrite.
Link to PDF of document I used: drive.google.com/drive/folder...
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Thanks for sharing your knowledge! Even grizzled old rockhounds can use a refresher, on the bsics!
May I suggest you get on Rumble and set up a "locals" account for donations, too? A lot of people are leaving youtube, and now a lot of people are leaving paypal. Like me...
"everyone loves magnets" never has a truer sentence been spoken
Banded Iron Formations (BIFs) are interesting in that they are essentially fossils of the oxygenation of Earth's atmosphere. I'd never even heard of them 10 years ago when I saw a huge specimen at the Smithsonian's Natural History Museum (great museum, BTW). I read up on them afterwards, and was astounded.
I know what you mean. Stromatolites and Iron banding, awesome event. Spectacular to say the least. Maybe my favourite rock too.
Watching you makes me realize I had not one teacher in school that wanted to educate us and make us passionate about something, All they did was berate us, belt us and make us hate learning.
Geez, that stinks. We really should have a system where our best and brightest become educators that inspire the next generation.
You are exactly right, Baltimore Maryland just had 23 schools where not one student was up to grade level in math NOT ONE.
I went to the usa in the 80s for a year. The students were two years behind. Teachers were just going through the motions. Lots of violence. It was like a 3rd world country.
Minute nine twenty four. Jay with a big happy face, big happy smiley face. Dude, I love you, man. This is just exactly what I love, mother Earth right in my face. Thank you.
THANKS. TECHNICAL. FACTUAL. VERY INFORMATIVE. GOOD SPECIMEN.
Thanks Shawn this was awesome!
Thank you, I have enjoyed this mineral series as well as others. I look forward to all of your future videos.
Thank you Shawn. Great information as usual. 😊
Glad it was helpful!
Thx for another class. Well done and interesting 👏👍
Excellent video. My wife and I were at the NE Coast of Scotland today and saw many examples of staining that looked just like your hematite example. Interesting!
Great video, very informative.We used to find a lot of pyrite outcrops in the Laurentians, East of Montreal. Now that area is developed. I found a piece of magnetite at the site of an abandoned Iron mine, along with tons of hematite. It was magnetized but was unusable as a compass since it had poles coming out from many different parts of its surface.
As always it is very helpful to me!
Thank you Professor! I had always wondered why the iron you can gather from soil with a magnet never looks rusted.
I really appreciate your time and expertise in making these lessons available, and treasure the understanding I gather from your work!
You are most welcome
I love this series! Just looked up, pyrite fossils. I didn’t know there was such a thing. Amazing!
Love this one too. So interesting and nice to hear your explanation. Rock on Willsey !
Awesome samples! Vien material from outings would be cool also. Can you imagine out finding those samples stumbling through outcrops? Excellent videos
Lots of information. Thanks
Always good. Thank you.
Shawn---ever been to mineral museum @ Montana Tech in Butte. Is wonderful--hundreds of specimens ---vast majority from underground Butte Mines. (free to public).
I'll check it out next time I am there. Thanks for the tip!
Very excited for your rock series! Thank you for providing this education for the non geologist like me. I am especially looking forward to some education of volcanic rocks. Living on the Stemilt/Malaga Slide just south of Wenatchee and quite literally at the edge of the CRB Grande Ronde flow I have been struggling with how to determine exactly what I am looking at. The columnar basalt is common and towers above at Jumpoff and Mission Ridges and is clearly CRB, but locally we also have some outcrops in the slide protruding from underlying sandstones that look quite different, and I am wondering if there is a way to distinguish between the CRB and potential earlier Eocene volcanics from 48 MYA. These outcrops consist of knobs of highly fractured smaller chunks that appear welded together in a random pattern. Since we are at the edge of the gold producing operations I wondered if they could be dike remnants from Eocene flows 48 MYA or result of Grande Ronde CRB flowing into some lake 17 MYA.
Thanks for watching! I will do my best to give you some skills and knowledge that might help you decipher the Wenatchee area.
Gracias por Compartir. Saludos desde Venezuela.
De nada. Gracias por mirar.
Wow love your info. Thank you sir
So nice of you. Glad it helps.
Such helpful info!
'Pyrite was used to start fires' An example was the wheel lock gun which used a pyrite against a iron wheel turned by a spring to make sparks and light the primer powder in a fire arm. This was the more expensive high end version of the flint lock firearm. Poor people usually had flint lock guns and wealthy people had wheel lock guns.
You need more samples! Love your videos. Bring a truck if you ever drive out to Phoenix az we’ll get you some samples you will see it right by the trails
Sounds good. I'll let you know if I'm down there sometime soon. Thanks for watching and learning with me.
Most of what I have was in this 1 video. ❤
I now understand why rust dulls drill bits, it’s harder than glass.
Thank you. Very informative. So I visited a limestone quarry in the Dallas/Ft Worth area in the Austin Chalk formation and found a number of pieces of pyrite that had been freed in the quarrying operation. These more or less cylindrical blobs. The exterior has a crystalline texture (some with larger crystals than others) but the ends are more granular. I know this may not be a lot to go on, but how would these have formed? They don't look like any kind of creature or shell, just crystal blob.
Hematite is not Ochre tho. Ochre is Limonite (Iron Carbonate) and its yellow out of the ground, tho roast it and it would turn red (precursor to making iron), some iron mining areas here in norway you have pyrite or magnetite up in the hills and once this ends up in a lake/pond/swamps it settles and gets eaten by iron eating bacteria turning it into Limonite
I have heard of pyrite before of course but I never dreamed it could take a cube form like that. I would say that is man-made if I would see it. But maybe nature can make perfect cubes? But I do like rocks that have stripes in them. I think those stripes must have formed over millions of years? or that is what I think when I see a rock with stripes. But I have no idea how they get those stripes.
And the iron you get in a vitamin... do they get that iron from rocks? or is that a different type of iron?
and I never thought of sticking a magnet to a rock. mostly I see rocks + pebbles + boulders along the shores of Lake Michigan... In a different area I found some rocks that look purple in color. they are near a bridge a good distance from the lake. like a gray purple color. one piece definitely contains some mica. sometimes when I see unusual rocks like these it makes me wonder if the rocks are natural to the area where I see them or were they put there by people? the area is not really landscaped or anything - its a parkway with natural woodland + a bridge. near a river. but I don't see these purple tinted rocks in other areas so I wonder then. I do have autism, just so you know. I should try a magnet on them! ok I tried it. it was a dud! whoever they are the magnet doesn't like them. 😅 But they must be special as they have a unique color.
I also watch a lot of videos + channels about volcanoes. so volcanoes all over the world are erupting + throwing out the magma (lava). but what I don't understand is where does the new magma come from? after so many millions of years wouldn't it be all "used up"? and if the magma is so hot (which it must be) then why doesn't it melt the rock that surrounds the "magma chamber"? or the rock directly above it where the volcano is? why were bodies found in Pompei? Shouldn't the pyroclastic flow just have melted / destroy everything? ARE those human figures found in Pompei bodies? or are they hardened rock that is similar to a fossil / dinosaur bone (like a Jello mold that was filled with rock)? boy if you want questions just talk to someone who had autism! 😅
I have also seen videos of features in nature that seem to be perfectly round. like sinkholes. some are so round they look like they were made with a drill! it boggles the mind. and apparently some craters / volcanoes can be round too. so what I am saying is if nature can make these perfect circles it can probably make cubes too.
The iron in vitamins is the same element as the iron in steel, pyrite, magnetite, and other iron-bearing materials. The iron in vitamins is generally presented as a chemical salt that is more readily absorbed by humans.
There are a number of crystal systems that take on some very specific shapes based upon the way atoms assemble into larger structures. Crystallography is an important science. Consider doing an internet search for cubic crystal system and you’ll be amazed at the variety of structures. Common table salt is a cubic structure.
Interesting to hear what a geologist thinks is important about a mineral. For pyrite I'd have add that it can also forms in shale and if the matrix shale is solid enough it will make short work of fixed cutter (PDC) bits. The best example of this was a well I was on at topographic map location c-C34-L/94-O-08, north east British Columbia. On that well we got lucky and didn't hit any pyrite. Starting at 830m (2,723 ft.) the PDC bit was able to drill 3,153m (10,344 ft.). On other wells in that area a 1,500m bit run was considered good.
What are those table tops mad from that can handle all those rocks dragging across them.
Not sure. Our maintenance folks put them in there years ago.
❤
In elementary school, a group of kids (I can neither confirm nor deny if I was one of them) would regularly spend recess looking for fools gold on the crushed rock that made up part of the playground.
So, can I get iron pyrite from the ATM machine? 🧐
👍
How about…..”Rocks with Willsey”. 😁
I got a question about Black Sand. Can you use it for Rock Tumbling?
I do not know. Sorry.
If the stone contain iron it should be magnetic right?
Not necessarily. Lots of iron in rocks and minerals that are not magnetic.
I have many stones
Magnetite comes in two flavors, Magnetic and non-magnetic. The magnetic one is lodestone and it will attract iron as well as the non-magnetic magnetite because it's primary substance is iron(II) or iron(III) oxide . . . Fe3O4
So all magnetite is attracted by a magnet but not all magnetite will act as a magnet.
Can you give a reference to that or is it your own observation? Sometimes hematite is mistaken for magnetite but it is nothing like as magnetic.
Do you want a sample of limonite pyrite?
No thank you. I’ve got enough.
Had to scroll through 20 videos about spiritual healing to find actual information
Ugh. The internet is messy.
“Whitish white”