Thank you Katryn. Your video is clearly laid out and easy to understand. This really helps in my quest to develop the ability to identify minerals and understand more about our amazing planet. I can't thank you enough for the videos you've created.
This is really good quality! It's paced fast enough that I don't get board, is slow enough to follow, and has useful information! Thank you and keep up the great work! I am eager to watch more videos from this channel. Like and sub!
I found this channel searching to identify a certain mineral. After identifying mica, I watched the rest of the video. This is really exceptional content. Thank you.
Is there a video on the Metamorphic rocks? I learned more in the 15 minutes each in the videos I watched on igneous and sedimentary rocks than all the other videos I have seen put together! You're awesome. A sincere thank you...
Mica family. I thought, when I was growing up, 30 years ago, that these flexible shiny layered rocks were called formica. Rock identification has not been a hobby of mine all these years. I have a 3 year old grandson now, my interest is renewed. As I was searching for information on this rock, referring to it as formica did not result in any correct examples. I'm very glad I found this content, my grandson and I will spend some time here learning more about rocks. Thank you.
That was clear as Mud . But then again , I am 65 and new to this . So I subscribed , and will watch this again and again till the mud clears till I move to your next video . I hope oldtimerz don't set in , then I will never get past this video .
Out of curiosity, does anyone know where I can buy a set of these sample minerals? In college geology years ago, it seems we used this same set and am curious about getting a set for myself for at home teaching/learning. I know there are several sets when I look online, but can't seem to find one with this particular selection.
These particular samples come from many sources, typically purchased individually over years from mineral vendors at shows. Some were gathered in the field. They weren’t part of a kit. Kits, as you say, can’t replicate these, especially in size.
Now I have this rock that is similar to your magnetite, compacted iron crystals, very heavy, magnetic, black, melted look on the outside, but it streaks red from the window I ground in it.
Im from kishtwar, india where pure sapphire is found, my hometown also have pyrites, mica, heamatite like rock in pleanty ,if our government explore there can be ores of many materials.
i wrote sometimes ago about the mineral industry in pakistan.our gems are sent to chhina and other countries.we must give job opportunities for our native inhabitants.for this purpose government ask the saudi or any other country to install factories to refine the ores of the gems. G overnment must make this industry as a part of its portfolio.other minerals as the people and government knows it gold copper iron must be taken in consideration. thanks agha irfan ahmad
How do we know a mineral exhibits cleavage by just looking at its faces _without_ breaking it? For example, Quartz has no cleavage despite the crystal exhibits several faces.
+Mau Jo You can't tell how it breaks unless you see broken surfaces. It's rare to see crystals with perfect crystal faces the way it grew (unbroken). So rather than break it, look for a broken edge. Telling the difference between a broken edge of cleavage vs. a crystal face (how it grew) is challenging, but you can do it! If in doubt, you'll have to break it. ;)
Earth Rocks! Thanks! In case of Quartz, I can see how that'd work. But, what if the broken surfaces are smooth? I have samples of feldspar with somewhat smooth surfaces that look like cleavage (some of them meeting at 60 deg) and other surfaces that are much smoother and seem to be the actual direction of cleavage. How to tell in that case?
+Mau Jo Again, let me repeat: recognizing cleavage is tough. Everything breaks. And those breaks can be smooth or rough or jagged. But only if the break is along a flat plane is it cleavage. Smooth isn't part of cleavage. (Conchoidal fracture is a curved surface and can be very smooth.) Smooth vs rough is a texture. You can have smooth surfaces that are curved or flat or irregular. You can have rough surfaces that are curved or flat or irregular. To be cleavage, you have to have a flat plane. Some minerals have only 1 cleavage plane. Though you might see many instances of that plane, like pages of paper, you don't see them jut up against and meet another plane. I usually look at edges where planes meet, and if I can see multiple instances of the edge (like stair steps), it's usually cleavage. See if you can identify cleavage planes in these images: fog.ccsf.edu/~kwiese/content/Classes/MineralsFlashcards.pdf
Earth Rocks! Thanks for your answer again. I would feel inclined to say from the images that the shown samples of epidote, plagioclase feldspar, actinolite, the dark sample of fluorite, pyroxene, chlorite, hematite, pyrite, graphite, olivine and serpentine lack of an identifiable cleavage.
+Mau Jo Not every picture shows what you need to see. But look closely at the garnet and quartz -- yes on crystal faces, no on cleavage. Fluorite, calcite, and halite pictures are examples where crystal faces and cleavage planes are the same. The minerals break along the same planes they grow.
I uploaded a video of some kind of mineral gem stone on my youtube channel, i found it when i was out walking, can somebody tell which kind of stone it is? Its very beautifull and heavy and i really love it :-) ty in advance
Looks like you have pyrite, galena, and possibly chalcopyrite and/or sphalerite. I don't see the purple mineral, but a cubic transparent purple mineral sounds like Fluorite (which will fluoresce to a different color in a black light). Hope that helps. Nice find! :)
I am a dog, and I enjoyed this. 10 woofs out of 10.
i agree. woof.
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Best video on minerals i have seen on youtube
Excellent tutorial. Thank you. Just what I was looking for.
Best informational channel for my rock hounding 💯 Great voice too!
Thank you Katryn. Your video is clearly laid out and easy to understand. This really helps in my quest to develop the ability to identify minerals and understand more about our amazing planet. I can't thank you enough for the videos you've created.
This is a superb video. The best presented and most thorough. Thanks.
Very nice to hear. Glad you appreciated it. :)
Amazing information about identification of minerals all over the world. Thanks for sharing.
Awesomely well made video. Great work. And the narrator is exceptional.
okay. this is the video i’ve been looking for for months!!!!!! best rock ID video i’ve seen so far i love your explanations!!! thank you soo much!!!!!
Glad it helped!
Thank you very much 🙏🙏🙏🙏🙏🙏
Very good Video. Its Amazing how they are Formed.
This is really well done. Many thanks.
I love the detail and presentation of all of these minerals. Great for studying : )
You've got some amazing pegmatites in California. Enjoyed the simplicity of your explanations - thanks.
Excellent explanation about the minerals. Very useful. I'll Watch again, sure. Obrigado pela ajuda.
omg i have a science test tmrow and i am so flattered on how helpful this was
thanks, the words are easy to digest and the sentences are strong and clear as the tetrahedral daimond.
lol
This is really good quality! It's paced fast enough that I don't get board, is slow enough to follow, and has useful information! Thank you and keep up the great work! I am eager to watch more videos from this channel. Like and sub!
bored* u mean?
@@nk-ve1po But you still understood......
I found this channel searching to identify a certain mineral. After identifying mica, I watched the rest of the video. This is really exceptional content. Thank you.
Is there a video on the Metamorphic rocks? I learned more in the 15 minutes each in the videos I watched on igneous and sedimentary rocks than all the other videos I have seen put together! You're awesome. A sincere thank you...
You're very welcome. Thanks for the feedback. :)
Metamorphic rocks: ua-cam.com/video/HUydPhIaQQU/v-deo.html
Love these videos, you did a really great job.
wow I am now sacraubribed to Earth Rocks!
I cannot wait for the epic content!
Beautiful collections. I would love to have few of those rocks.
if you want contact me alkhaddaryoussef@gmail.com
This is the best video ever ....thanks alot
So helpful
This is way a cool video. Thanks for putting these up.
Omg! Love this subscribed. Time to binge watch
This video was awesome! Thank you so much for the help, subscribed :)
Sitting in an office doing a boring office job while having my lunch, I'm not sure why I find this interesting but it is...I will watch some more.
very weel done and informative! well done!
thankyou so much earth rocks! i loved the video!
Great Video.Very Well Explained.Its Amazing .
Great video; thanks for this wonderful information.
Mica family. I thought, when I was growing up, 30 years ago, that these flexible shiny layered rocks were called formica. Rock identification has not been a hobby of mine all these years. I have a 3 year old grandson now, my interest is renewed. As I was searching for information on this rock, referring to it as formica did not result in any correct examples. I'm very glad I found this content, my grandson and I will spend some time here learning more about rocks. Thank you.
Where i grew up we knew these flakes as Kråkesølv, meaning crow's silver. Always thought they would work great as little windows...
Wow so much data unpacked in a lil video
Gostei muito dó seu canal é sou garimpeiro é descobri muito coisa interessante 🙏
جميل أحسنتوم يااصدقاء معلومات مهمة نشكركم على المعلومات القيمة مرحبا 👍👍👍👍👋👋👋👋🌹🌹🌹🌹🌹
Ur videos are Treasures.....Simply 🔥
Thank you so much 😀
Better than sector mass spectroscopy is XRD (x-ray diffraction) and a petrographic microscope. Spark atomic emission spectroscopy can also be used.
Thank you! An excellent video.
Excellent Video !!!
This is a great channel
Amizingly explained
That was clear as Mud . But then again , I am 65 and new to this . So I subscribed , and will watch this again and again till the mud clears till I move to your next video . I hope oldtimerz don't set in , then I will never get past this video .
Thank you for the lecture mam. by any chance can we get the details of these tables mam ??
The tables are in lessons that are built around the videos. To access those, you need to join the channel (become a member). :)
Thanks for valueable information
Great video! Now I understand the Denver Gem and Mineral show we attended many times. Awesome stuff!
You hit it out of the BALL PARK WITH YOUR PRESENTATION. Most appreciated & helpful with my mission ops.
Makes me want to take up geology class
Very helpful video thank you so much
Besy video i've found to teach a layman! THANKS lady -)
Great video..very educational
Out of curiosity, does anyone know where I can buy a set of these sample minerals? In college geology years ago, it seems we used this same set and am curious about getting a set for myself for at home teaching/learning. I know there are several sets when I look online, but can't seem to find one with this particular selection.
These particular samples come from many sources, typically purchased individually over years from mineral vendors at shows. Some were gathered in the field. They weren’t part of a kit. Kits, as you say, can’t replicate these, especially in size.
I'll be watching this video more than twice 😅, everything is explained so well. I subscribed, thank you for showing us such fantastic examples 👍🏼🇳🇿
Now I have this rock that is similar to your magnetite, compacted iron crystals, very heavy, magnetic, black, melted look on the outside, but it streaks red from the window I ground in it.
Hematite most likely. Post a photo.
Is it pure black or dark brown? If it's dark brown you might have Limonite
@@coolercat4027 Black on the outside cause it looks like it been melted, inside silvery crystals, very magnetic, very heavy.
This is a great video! Thank you
thank you so very much!!
Thank you. That was interesting.
0:27 y did she say module
It’s for a course, courses are divided into modules
Thank you for that sharing sir.
its very clear explanation
great video im new to rocks but find it really interesting i found this video very informative subscribed thanks for uploading
This is great!! Nature Rocks!
Im from kishtwar, india where pure sapphire is found, my hometown also have pyrites, mica, heamatite like rock in pleanty ,if our government explore there can be ores of many materials.
Why so many other minerals that like to grow on Mica?
its really usefull information to prepare for exam
Miglė P. What do you study?
Astronomy
Miglė P. Your right. I made my excellent results through this
Miglė P. If
i wrote sometimes ago about the mineral industry in pakistan.our gems are sent to chhina and other countries.we must give job opportunities for our native inhabitants.for this purpose government ask the saudi or any other country to install factories to refine the ores of the gems. G overnment must make this industry as a part of its portfolio.other minerals as the people and government knows it gold copper iron must be taken in consideration. thanks agha irfan ahmad
I am a very new rock hound. Where may I get the identification charts that you display. Thanks.
You can find them in my lab manual: fog.ccsf.edu/~kwiese/content/Classes/GeologyLabManualFall2018.pdf.
Page 126-128
Earth Rocks! Thanks for your reply. I am trying to watch and learn being a beginner.
POV: When your Geo Teacher Makes You Watch This Vid
Other Students: Yay!
Me: Oof
i know you btw pretty cringy
@@zunuku4165 lol Hey Nico
How do we know a mineral exhibits cleavage by just looking at its faces _without_ breaking it? For example, Quartz has no cleavage despite the crystal exhibits several faces.
+Mau Jo
You can't tell how it breaks unless you see broken surfaces. It's rare to see crystals with perfect crystal faces the way it grew (unbroken). So rather than break it, look for a broken edge. Telling the difference between a broken edge of cleavage vs. a crystal face (how it grew) is challenging, but you can do it! If in doubt, you'll have to break it. ;)
Earth Rocks! Thanks! In case of Quartz, I can see how that'd work. But, what if the broken surfaces are smooth? I have samples of feldspar with somewhat smooth surfaces that look like cleavage (some of them meeting at 60 deg) and other surfaces that are much smoother and seem to be the actual direction of cleavage. How to tell in that case?
+Mau Jo
Again, let me repeat: recognizing cleavage is tough. Everything breaks. And those breaks can be smooth or rough or jagged. But only if the break is along a flat plane is it cleavage. Smooth isn't part of cleavage. (Conchoidal fracture is a curved surface and can be very smooth.) Smooth vs rough is a texture. You can have smooth surfaces that are curved or flat or irregular. You can have rough surfaces that are curved or flat or irregular. To be cleavage, you have to have a flat plane. Some minerals have only 1 cleavage plane. Though you might see many instances of that plane, like pages of paper, you don't see them jut up against and meet another plane. I usually look at edges where planes meet, and if I can see multiple instances of the edge (like stair steps), it's usually cleavage. See if you can identify cleavage planes in these images: fog.ccsf.edu/~kwiese/content/Classes/MineralsFlashcards.pdf
Earth Rocks! Thanks for your answer again. I would feel inclined to say from the images that the shown samples of epidote, plagioclase feldspar, actinolite, the dark sample of fluorite, pyroxene, chlorite, hematite, pyrite, graphite, olivine and serpentine lack of an identifiable cleavage.
+Mau Jo
Not every picture shows what you need to see. But look closely at the garnet and quartz -- yes on crystal faces, no on cleavage. Fluorite, calcite, and halite pictures are examples where crystal faces and cleavage planes are the same. The minerals break along the same planes they grow.
Nicely done
Charles Lyell would have been proud.
Thank you.
Aww... that's a great compliment! :)
This video rocked! Please don’t stone me for my comment
Tenhos varias pedras mais nao conheço entao fico vendo essas pedras q vcs colocam
😍please information about platinum rough
are bones minerals you dont have any of them ?
Awesome video
Glad you enjoyed it
I just want to know the rocks in my garden. Thanks.
Thanks for the info!
Very Informative:)
Do you have a email so I can send photo of my 3 rocks. Could you tell me what they are
I can try. katryn.wiese@mail.ccsf.edu
Adoro ver esses videos
thank you. intresting video.
Thank you well explained
who got this from school? great video btw!
Nice information
I uploaded a video of some kind of mineral gem stone on my youtube channel, i found it when i was out walking, can somebody tell which kind of stone it is? Its very beautifull and heavy and i really love it :-) ty in advance
Looks like you have pyrite, galena, and possibly chalcopyrite and/or sphalerite. I don't see the purple mineral, but a cubic transparent purple mineral sounds like Fluorite (which will fluoresce to a different color in a black light). Hope that helps. Nice find! :)
@@EarthRocks thank you for the answer, i think you are right in all of it :-)
Awesome 👍👍👍👍
Wow. Thank you :)
That was great!
Just wanted to say that Hydrogenchloride is a strong acid but nonetheless a informational video thanks :)
Thanks. :)
It is used at 1M strength to test for carbonates, not particularly dangerous in the small amounts required.
I FUCING LOVE GEOLOGY 🙃
💛THANK YOU 💛
8:29
Also, very informative.
Thank you.😀
very nice informative vedio
Mane pkr2 ni..nk jual batu aku nk suruh menilai harga?
Thanks
Don't hold galena for a very long time due to lead content
Our professor made us taste it do help identify it.
HA
Sorry to ask what rock is this on this video in this link:
ua-cam.com/video/xO60TrxJtpU/v-deo.html
And to ask what mineral in this rock in this link:
ua-cam.com/video/VVlZA0hR3j4/v-deo.html
Thanks for this channel and for all of you