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Posted by: Mrs.CP Sep 3 2007, 10:54 AM

Here are a few pictures of some amazing specimens of Goethite.
This first specimen is smaller than a dime.
Enjoy!

Posted by: Mrs.CP Sep 3 2007, 10:59 AM

I have some!




Learn more about Goethite here...
http://www.answers.com/topic/goethite?cat=technology

Posted by: Mrs.CP Sep 12 2007, 08:31 AM

Another little black beauty.
No scrubbing involved when cleaning these specimens.

Posted by: fourcornersrocks Sep 12 2007, 09:02 PM

Nice specimens, is rutile related to this stuff? Cool background too, is it dino done?

Posted by: Mrs.CP Sep 13 2007, 04:38 AM

Thanks! No, Goethite is not related to rutile. You can find more information on Goethite in the link in my post above.

Yes, that is dino bone the Goethite is on...hehe
Beautiful slab isnt it?

Posted by: jim Sep 13 2007, 06:12 AM

i was wonderin the same thing.the background does look a bunch like dino bone.jim

Posted by: fourcornersrocks Sep 15 2007, 12:26 AM

Well at least I'm perceptive... "Learn more about Goethite here..." Thanks for helping!

Posted by: Mrs.CP Mar 12 2010, 11:26 AM

You can also check out our http://www.coloradoprospector.com/Gems&Minerals/Goethite.html page. It also has some great information and reference links.

Here is another picture of a piece of Colorado Goethite that has not been cleaned all the way yet. Sure will be cool when the cleaning process is finished. This piece has a hole in its backside, (perfect crystal shape) showing where the Goethite formed onto the quartz crystal. Shame that sometimes the Goethite pops off the crystals. I'll post a picture of the backside soon.



For fun I thought I would add this close up picture of some Goethite.



Colorado's Goethite is the best in the USA.

Posted by: Mrs.CP Mar 12 2010, 03:34 PM

Here is a picture of the backside of the Goethite pictured before the closeup photo.
Almost looks like a wee rusty mining spike stuck inside the Goethite crystals.

Posted by: Coalbunny Mar 20 2010, 12:25 AM

IIRC goethite is a secondary replacement mineral? Iron oxyhydroxide (FeO(OH)).

Posted by: Mrs.CP Mar 23 2010, 02:34 PM

Its actually a primary hydrothermal mineral, in the diaspore group.

Formula: α-Fe 3+ O(OH)

"Named For German poet, novelist, playwrighter, philosopher and geoscientist Johann Wolfgang von Goethe."

Posted by: MikeS Sep 14 2014, 05:58 PM

Here is a video of some of my recent Goethite finds. One of them has some Amethyst (Onegite) with it. The last large one has Hematite forming up through the middle.

https://www.youtube.com/watch?v=GkpdTYItNfE

Posted by: NewRockHounder Sep 14 2014, 07:17 PM

Again, jealous Mike. Great finds - find 'em on your claim?

Posted by: MikeS Sep 14 2014, 07:20 PM

Yes I did.

Posted by: Mrs.CP Sep 15 2014, 07:13 AM

Sweet specimens Mike! You have some really nice looking Goethite on your claim! Love the combos, especially the one you held up to the light.......Amethyst color showed right away. Very cool, never seen Amethyst with Goethite before....Excellent find! Shame the one Goethite broke, it had a great shape going on. You clean yours with a textile gun? That's how we clean ours and it seems to work really well.

Great example of how cool Colorado's Goethite is, thanks for sharing the video with us.

Posted by: MikeS Sep 15 2014, 10:03 PM

No, but it is on the list of things to get along with a lapidary unit/trim saw. They cleaned up kinda nice with the soapy water and gentle toothbrushing. Some of the terminations are thin blades, so I was very careful.

Posted by: Mrs.CP Sep 17 2014, 07:09 AM

You would really love a textile gun, especially for cleaning Goethites! You have some great looking Goethite on your claim. Nice big thick pieces!
We sill have several we need to clean yet, one is a broken piece of Quartz with the whole side covered in Goethite.

Posted by: MikeS Sep 17 2014, 05:37 PM

After looking at some textile guns online yesterday, I found that they are more affordable than I thought. I also assumed they would need a compressor or something but if you can just plug into an outlet, then this would be perfect for me. It should help a bunch with the more complex Fluorites as well. Do you have a brand you recommend? Or a brand you recommend avoiding? I was looking at one made by Arrow with an adjustable nozzle.

Posted by: Woody Sep 17 2014, 07:57 PM

She's right Mike.

Once you get a textile gun you'll be gald you did. There is a small learning curve that goes into it but don't worry. You hit your hand once or twice...... you'll learn. If you are needing one anytime soon, let me know. I'll let you borrow mine. Woody.

Posted by: Mrs.CP Sep 20 2014, 01:44 PM

The one we have is an Red Arrow YH-170 cleaning gun with the adjustable nozzle and works great. With lots of use, you may just need to replace the spring in the nozzle but not hard to do. You can even take clay filled specimens from the pockets and more gently with the gun wash away the clay revealing the even smaller goodies that get rubbed off lots of times in the field with excitement. Is a total rush watching the piece slowly reveal itself and what little combo pieces pop in on or with it!! You will love a cleaning gun, can even put warm soapy water in it for cleaning.

Too funny Woody but true, almost feels like it will rip away skin if too close. Perfect for rock gunk removal and even goes in those hard to get crevices though. Once you get use to the force the gun has, you can even regulate how far from the piece to hold the gun by testing with your hand.

Hopefully you are out finding more of those spectacular Goethite specimens Mike!

Posted by: MikeS Sep 21 2014, 07:47 PM

I didn't get any Geothite this weekend. I picked at that spot a little and found one tiny pocket of smokies. All but one were broken. However I did have the pleasure of meeting Woody. Which is better than finding Goethite. We have a lot of interests in common other than gold and minerals. Conversation with him was my big score for the weekend.

Posted by: Woody Sep 21 2014, 08:11 PM

Thanks for the warm welcome at your claim,

Spent a great day hanging out with you guys and got to see some new land. I had not been in that part of the country before. It wasn't a bust by no means and your partner did find a few small sprays of Goethite. That area of your has massive potiential. I can't wait tom hear what you find next. Let me know when you guys are able to get to my neck of the woods and we'll give it a go on this end. Have a good one, Woody.

Posted by: Mrs.CP Sep 22 2014, 11:40 AM

That's great that you guys got to meet up! I find most that frequent these forums love to multitask with different interests. I hope to get the chance to meet you both some day also, would be a great time.

Posted by: Crusty Sep 22 2014, 02:42 PM

I'll second that! They are great, but will definitely light you up if you're too close, even with heavy rubber gloves on! Not sure what brand mine is; I just got it off ebay.

Posted by: MikeS Mar 23 2015, 08:39 PM

Yesterday I picked up a few friends to join me for my first trip to the claim this season. Although it was overcast most the day it was a perfect day to mine some amazing Goethite, Quartz and Fluorite!

After taking pictures and removing some overburden I found a fist size goethite, but it was heavily eroded.





I did come away with a quality piece of Goethite by the end of the day. What a great start to the season!

Posted by: NewRockHounder Mar 24 2015, 12:07 AM

Dammmmmmn! Those are sweet. Great finds.

Thanks also (maybe) for making me jones more so than I already was.

Colin

Posted by: Mrs.CP Mar 25 2015, 09:55 AM

Those are amazing Goethite finds Mike, some of the best I have seen in Colorado here!!
Seeing them in their natural form all dirty and root filled like that is very exciting and gets the prospector's blood pumping. Fantastic way to start your season.

Those are some prime specimens and will clean up nicely, especially with the pressure gun.
Thanks for sharing the pictures with us and keep up the good work, it sure is paying off!

Posted by: swizz Mar 25 2015, 02:30 PM

Yowsa! Nice stuff!

Posted by: Crusty Mar 25 2015, 04:23 PM

Wow, those cleaned up nice!

Posted by: MikeS Mar 25 2015, 07:29 PM

I bought a couple of pump sprayers from the hardware store and they work great in the field and at home. I have not pulled out the textile gun yet but I will.

Posted by: Mrs.CP Mar 27 2015, 04:47 PM

Those pump sprayers are very handy Mike! Fantastic finds, keep up the hard work.... You're doing great!

Posted by: MikeS Apr 9 2015, 11:03 PM

My friend sent me some video and pics of goethite from the claim that has begun the cleaning process. Thanks Jason!
These specimens are phenominal!! And the combos are INSANE!!!
https://www.youtube.com/watch?v=bITCG6QBP-Q
https://www.youtube.com/watch?v=v5_HMfBgAT8

Posted by: mandbh Apr 10 2015, 05:12 AM

WOW! That's awesome and you guys are so lucky! We can't wait to get our hands dirty and find some awesome stones like that! Congrats!

Posted by: Crusty Apr 10 2015, 07:32 AM

Nice looking stuff!

Posted by: CP Apr 16 2015, 11:06 AM

Sweet goethites Mike! You guys have some very cool pieces on your claim, those fan blades are huge and the combos are just too cool!! Look forward to seeing more of those cleaned as well as the new finds to come.

Posted by: Dave S. Jul 22 2015, 06:51 PM

Some of my Goethite finds from Pikes Peak granite near Lake George.


This one is not clean yet, but it came from a boulder above ground, along with the tiny fluorite cube:

A large bladed crystal:





A spray of crystals that used to sit on top some kind of flat crystal.




Two sprays that intermingled with each other as they grew.






A Combo! Goethite on a sharp "phantom" smokey quartz with inclusions in the quartz.(specimen on feldspar matrix)

Posted by: Yoda Jul 23 2015, 06:47 AM

Some seriously sexy pieces there. The combo is pretty cool, but to me the conjoined sprays take the cake by being so interesting to look at.

Posted by: Mrs.CP Jul 23 2015, 07:59 AM

Some spectacular specimens you guys are finding, good job!! I don't mind if they are not cleaned yet......Gets the blood pumping seeing them still dirty.

Thanks for sharing the pics with us Mike and Dave......You guys rock!

Posted by: swizz Jul 23 2015, 11:04 AM

Too cool!
I did not know how beautiful this stuff was until I saw what you brought up to my claims (lucky bugger Crusty!). Incredible! It looks like metal but it's not.

Posted by: Dave S. Jul 23 2015, 04:20 PM

It does have a lot of Iron in it Swizz! Iron Hydroxide (FeOOH) but metal detectors do not really pick it up. The hydroxide part, breaks up the metal signal.

Posted by: swizz Jul 23 2015, 06:57 PM

Oh, interesting! I thought you mentioned Crusty's piece wasn't magnetic and that's what threw me off track.

Posted by: MikeS Jul 23 2015, 07:43 PM

They don't seem to be magnetic either. I have strong rare earth magnets that have little or no effect on the goethite.

Posted by: Snacksquatch Jul 24 2015, 11:17 AM

Mike, goethite wont exhibit much natural magnetism (powdered samples may show a little), but heat them up to red hot (dont worry, your samples wont be damaged), and then try it. Youll be very surprised at the difference!

Posted by: MikeS Jul 24 2015, 04:00 PM

Welcome to the forums Snacksquatch!

That is an interesting property of Goethite that I didn't know about. I will try that on a lesser piece when I get the chance. I should make a video about some of these properties.
If I can find a way for them to show up on a metal detector then finding them on my claim would be much easier.

Posted by: MikeS Jul 29 2015, 08:40 PM

Made it back to the claim on Saturday the first time since the Club invite this spring. I poked at one of our workings for a few hours and found some small pieces of Goethite and other small goodies.

Posted by: MikeS Oct 6 2016, 07:07 PM

Dave and I went up to the claim last weekend and had a great weekend mining. I found a great pocket with smokey quartz, goethite and a few fluorite crystals.

Posted by: Denise Oct 7 2016, 08:18 AM

Excellent pics and finds Mike! That Goethite will clean up nicely! Hopefully you saved that sweet Smokey quartz from the clay and mud.

Thanks for sharing your pics and finds with us!

Posted by: Crusty Oct 7 2016, 08:55 AM

NIce finds and perfect time to catch the fall colors too!

Posted by: EMac Oct 7 2016, 09:17 AM

I think Mike is right on that CO goethite! Those are some great finds you've got there!

Pure serendipity, unrelated to mining, connected me with some recent Mississippi transplants down in Woodland park. Turns out they're looking to make a business of mining gems and other minerals. Doesn't hurt that Rich Fretterd is their neighbor, and the other neighbors are into mining gems, lapidary work and jewelry as well. Not a bad environment to learn in I'd say.

This is a pic of their goethite specimens found on the claim they filed last year (they moved here last June). Most of the specimens had unakite (I think that's what he said it was: small, purplish crystals) on the black blades.

I imagine lots of folks here have shelves like these, but I don't frequently get to see them first hand, so I'm geeking out a bit. Makes me want to go dig goethite. I was impressed with these miners, and I hope I can convince them to come here and contribute to our group.

Edited to congratulate Mike on the finds and clarify how he was right.

Posted by: James and Cyndi Oct 7 2016, 09:25 AM

Even if your not totally into crystals, that will get yer rocks off!

Posted by: Crusty Oct 7 2016, 09:58 AM

Wow, that is an impressive collection! Would love to get a closer look at those combos!

Posted by: MikeS Oct 7 2016, 10:54 AM

I did save that smokey from the mud. I think the one in the picture was one of the nicer double terminated ones that came out of the pocket. I only took a few pics in the field but this pocket had 50+ smokey quartz crystals and 50+ goethite specimens and 4 little fluorite cubes. Many of these will fit back together for killer combos. What little free time I had this week has been giving these a soapy bath and gentle scrub. I should have several more pics coming when I get the chance(next week). I will be posting an invite to the claim soon also for Club Members.

Posted by: MikeS Oct 7 2016, 11:20 AM

Sounds like they are finding amethyst crystals on the goethite EMac. When goethite penetrates the quartz it is often called "onegite" which is likely the name they used. Very cool. Nice collection they have got there.

Posted by: MikeS Oct 7 2016, 05:20 PM

I took some pics of what I found in the pocket last weekend.
Larger nicer smokies. Some of them with goethite on them.

I think this was the smokey that can be seen in the picture of the pocket posted above. It is a nice double terminated quartz and I think a goethite was on the side of it. If I can match them up, this will be a sweet combo.




Larger goethite, combos and fluorite.






This is the best intact combo from the pocket. A great smokey quartz with goethite on it's feldspar matrix.




Fluorite.




Goethite specimens.

Posted by: MikeS Oct 7 2016, 05:36 PM

I still have around 50 small smokies and several small goethite to go through too.

Posted by: swizz Oct 7 2016, 06:57 PM

Very cool!