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Post by Donnie's Rocky Treasures on Feb 6, 2015 18:57:59 GMT -5
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jamesp
Cave Dweller 
Member since October 2012
Posts: 36,612
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Post by jamesp on Feb 6, 2015 19:00:49 GMT -5
Step right up. That looks like a tough one Donnie. Lots going on there.
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Post by Donnie's Rocky Treasures on Feb 6, 2015 19:05:11 GMT -5
I think some of those brownish areas on there are copper, just not sure. Thought perhaps the green was moss too, but don't think it is. It was part of someones collection that was given to me.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Feb 6, 2015 19:16:15 GMT -5
I'm not a proffesional identifier.but I'd say some sort of copper ore, and my reason for saying so is I've got some that looks just like it.except I soaked mine in acid to leave just the copper
Dave
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Post by captbob on Feb 6, 2015 19:21:34 GMT -5
I've never seen copper in cubic form.
First wild guess without thinking too much on it...
Green = Mimetite
White = Calcite
Brown = Wuflenite
guessing from Mexico
guess subject to change once I quit thinking about it!
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Post by woodman on Feb 6, 2015 19:24:11 GMT -5
I have some samples from Hampton Butte that look similar. Will try to get some pictures later tonight.
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Post by captbob on Feb 6, 2015 19:27:59 GMT -5
Petrified wood? Don't see that, but would love to see your examples!
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Post by woodman on Feb 7, 2015 0:28:17 GMT -5
Petrified wood? Don't see that, but would love to see your examples! In looking at mine I see that it is totally different but here are couple of pictures.   |
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Post by snowmom on Feb 7, 2015 6:14:55 GMT -5
the green is pistachio green which around here would translate to olivine. unless it is plant matter of some sort. The coppery color could be bronzite, a metallic colored form of enstatite. I am real bad at identifying crystals, that needs to be an area of study for me. Have you tried scratch tests on it? It looks like maybe a bit of serpentine or serpentinite between the "wings" and lower center of the photo. ?
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Post by vegasjames on Feb 8, 2015 0:09:02 GMT -5
In my opinion I would say the white is quartz, the green looks more like epidote to me and the cubes limonite after pyrite.
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Post by gingerkid on Feb 8, 2015 9:44:32 GMT -5
whitish-colored areas = quartz or calcite?? greenish-colored areas = smithsonite or conichalcite?? brown cubic xtals and areas = limonite after pyrite (pseudomorph)?? Donnie's Rocky Treasures, nice specimen!! Someone may be able to help id your specimen if you take some close-up shots of it. |
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Post by vegasjames on Feb 8, 2015 14:15:27 GMT -5
I still think the green is epidote. Compare the specimen to these pics of epidote and quartz: www.fabreminerals.com/LargePhoto.php?FILE=specimens/s_imagesZ4/Epidote-NX13Z4d.jpg&CODE=NX13Z4&NAME=Epidote%20with%20Quartz%20-%20Mina%20de%20Aguablanca,%20Badajoz,%20Spain&LANG=EN&TIT=Epidote%20with%20Quartz%20-%20Mina%20de%20Aguablanca,%20Badajoz,%20Spain%20|%20Fabre%20Minerals www.fabreminerals.com/LargePhoto.php?FILE=specimens/s_imagesZ4/Epidote-NY61Z4d.jpg&CODE=NY61Z4&NAME=Epidote%20with%20Quartz,%20Andradite%20and%20Pyrite%20-%20Mina%20de%20Aguablanca,,%20Spain&LANG=EN&TIT=Epidote%20with%20Quartz,%20Andradite%20and%20Pyrite%20-%20Mina%20de%20Aguablanca,,%20Spain%20|%20Fabre%20Minerals |
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Post by Pat on Feb 8, 2015 14:34:27 GMT -5
Whatever it is, it's interesting and pretty.
Pure guess: the metallic might be pyrite; don't think copper comes in cubes
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Post by Pat on Feb 8, 2015 14:36:32 GMT -5
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Post by gingerkid on Feb 8, 2015 14:46:35 GMT -5
Hmm, mindat.org shows some pretty boxy looking copper. Go here: www.mindat.org/min-1209.htmlWow, those are beautiful, and thanks for posting the link, Mrs. Pat! Could be epidote, vegasjames. You must have very good eyesight. I cannot discern anything about the green mystery mineral other than the color. |
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Post by captbob on Feb 9, 2015 2:19:31 GMT -5
Wulfenite  Donnie, can you post a more detailed picture? |
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Post by Peruano on Feb 9, 2015 7:20:06 GMT -5
I'm with vegas james. Epidote is more likely to be pistachio green than is olivine. Telling quartz from calcite (use acid or a scratch test) should be easy.
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