33. How to Identify Rocks

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Published 2021-04-07
How can you tell what type of rock you have? Join us to learn how you can tell one type of rock from another.

The notes for our course are a free download available on our website: science.mom/earthscience

Get the Rock Identification Flowchart from our Teachers Pay Teachers page:
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The layered rock in the thumbnail image on the far left is called Vernon wonderstone. It comes from a quarry in Utah and is technically a "welded-vitric tuff," a type of volcanic rock. The colorful banding is caused by groundwater with iron oxides that altered the tuff. It's one of my favorite rocks and I meant to show it during our lesson but didn't end up having time to talk about it in the video lesson.

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All Comments (21)
  • @free2bfree583
    I'm a grandma (not a kid) - learning about rocks - and loving your channel. Thank you...
  • 64-years-old and still learning about rocks. This video is awesome.
  • @msinbalony
    You guys are awesome:) I didn't realize this was intended for kids till half way through:) I'm discovering the world of crystals lately, and wanted some sceintific context.. really enjoyed this. I love that Dad comes to class clueless and learns everything with us.. that's sweet:)
  • @963ag
    I have been an avid rockhound since childhood. All things pertaining to geology and especially paleontology, fascinate me. When I was younger, fossils were my big passion, but now I am adding things like peacock copper, agates, quartz, desert rose, etc. to my collection. I think it is the combination of the aesthetic beauty and the scientific information that attracts me. My uncle was also a collector and did lapidary work, which I have never done as I am not good with my hands.
  • Im a gramma that collects rocks and i am so glad i found your channel. Made my day!
  • Accidentally stumbled on your channel. Tons of knowledge to digest. Thank you for sharing them. Cool show
  • Within the past few years I've become drawn to rocks and minerals I've found while out and about.. Just turned 44 yr old but still a kid at heart
  • @SnarkasticSunny
    Am not a kid either... 65 today. Have collected rocks for many years - I love pretty rocks. I want to get my own rock polisher soon. Friends have polished my rocks for me until now. Some of prettiest rocks I found walking on Oregon beaches.
  • Awesom video thank you 💯🙏I am a grandma 62 and a lover of rocks ,all rocks,minerals and raw crystals.Collect some .Thank you so interesting and so informative. Bless You with Love and Light thank you .
  • @soyunkim5380
    I had an in-box thinking about Rock. Education broadened my eyes on how to see the object in my life as a metaphor as someone described my life and experience.
  • Love the beautiful way nature expresses! Crystals, minerals, rocks, all are beautiful and amazing. Thank you.
  • @rockysmith4257
    Outstanding teacher. Great team. His questions, provide a wonderful natural flowing sequence of questions that allow her to fill in the blanks in her highly expressive way. May your tribe increase!
  • @Grannathinks
    I'm a Granna at 70 years old I am finally learning more about rocks that I have collected for years.
  • @IdentityQuandry
    I'm a new rock collector. Your program is far and above all the others I've seen anywhere. Your information is presented in a lively, intelligent manner. I was riveted! So much valid information so very clearly explained! I thank you for sharing your knowledge in such an entertaining and educational way!
  • Was looking for geology information as I prospect for gold. Found your site and watched. Reminded me of kindergarten how you presented your information and realized you are teaching. I let it flow and giggled with enthusiasm, but during your presentation I received an education on things I didn't know. Thankyou with happy smiles
  • @JudeNance
    I have been a rock hound since I was a child. Thank you 😊
  • @jannay1039
    I’m a grandma to crystal, rock, etc. loving granddaughter in the 4th grade. She gets her curiosity from me who lived most of my life in Colorado and am the daughter of a hard rock miner (molybdenum). The book, Colorado Roadside Geology “ was my bible for many years. I now live in Hawaii which is kind of limited for rock hounding. I have a large collection and have several rocks/minerals that I have never been able to make a ‘for certain’ identification. I came upon your channel while searching for guidance to identify these specimens. I’m thrilled to be an adult subscriber! My granddaughter agrees that you and your husband are wonderful teachers who make learning fun! I’m certain the math videos will be another favorite.
  • @ErwinMaas
    I am just trying to get into identifying rocks and stones and have seen many videos about it, but just couldn't connect all kinds of dots. Your video made so many things very clear to me, I will need to save it and will surely watch it several more times in the future. Lots of thanks from a 62 year old Dutch guy retiring in Portugal!
  • This video was super fun and engaging, I am a highschool student preparing for a science Olympiad competition and I really had no interest or clue, but saw this field of study as something obligatory. You guys really turned my mindset back to a child fascinating over toys. Thank you so much :D