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Post by Rockhobbit on May 17, 2011 11:07:09 GMT -5
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Post by Donnie's Rocky Treasures on May 17, 2011 15:19:59 GMT -5
It's got areas on it that remind me of wavellite. Hopefully someone else will know for sure.
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Post by tkrueger3 on May 17, 2011 15:23:22 GMT -5
I have no clue, but it would be interesting to know how those circular, "starburst" formations came to be. Those are pretty neat looking, I think.
Tom
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Post by Rockhobbit on May 17, 2011 15:39:09 GMT -5
Hopefully Mel or Lowel will give us a few hints!
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Post by Donnie's Rocky Treasures on May 18, 2011 11:11:15 GMT -5
Doesn't anybody have a clue?
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Post by jakesrocks on May 18, 2011 11:15:07 GMT -5
Does kind of look like Wavellite. Gonna have to check the books on this one. Don
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Post by Rockhobbit on May 18, 2011 11:54:13 GMT -5
I will call Diane...........she knows almost as much as Mel ! LMAO
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Post by Hard Rock Cafe on May 18, 2011 13:16:45 GMT -5
I also thought of wavelite, but wavelite tends to be more green (at least what I've seen). Also reminds me of pyrite dollars.
Chuck
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Post by jakesrocks on May 18, 2011 13:19:27 GMT -5
My guess would be Hematite. It fits the requirements. Weight, color, type of growth. Have you tried a streak test yet ? If you get a dark red to brownish red streak, it's almost sure to be Hematite. Don
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Post by Donnie's Rocky Treasures on May 20, 2011 11:25:06 GMT -5
Anybody else have input on this one?
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,685
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Post by Fossilman on May 20, 2011 13:57:15 GMT -5
Sorry,doesn't look like any fossil or dino stuff I have seen or have.............
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rons
spending too much on rocks
Member since March 2010
Posts: 450
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Post by rons on May 20, 2011 14:32:38 GMT -5
I believe bytroidal hematite is the answer the "balls" have been broken off leaving the pattern (theres a name for that pattern however CRS just kicked in)
Wavelite and pyrophilite(sp) have similar look
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Post by rockmanken on May 20, 2011 15:24:41 GMT -5
Yes Sherri, it IS botryoidal hematite. We have lots of it and it comes in different shapes and colors. Sometimes it has a iron stain crust on it. When you cut it, it makes a VERY MESSY MESS. ;D ;D Will polish out jet black, but it is brown to start. All the orbs will be like pyrophyllite and/or wavelite when broken open. Ken
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Post by Rockhobbit on May 20, 2011 16:18:36 GMT -5
Thank you to everyone!!
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,466
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Post by Sabre52 on May 20, 2011 22:25:47 GMT -5
Yep, botryoidal hematite would be my guess too.. A lot of those botryoidal minerals have that radiating structure when broken open as that the way the crystal structure grows. Even those hematite rich California poppy jaspers like some of the Hornitos and Guadalupe Poppy types seem to have formed as little beads and when you cut the beads through, they show those radiating crystal structures...Mel
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Post by drocknut on May 29, 2011 20:59:03 GMT -5
I will call Diane...........she knows almost as much as Mel ! LMAO I'm not even close to Mel in rock knowledge and probably other areas too. Thanks for the vote of confidence though ;-)
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leadbelly713
starting to spend too much on rocks
Member since June 2011
Posts: 104
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Post by leadbelly713 on Jun 29, 2011 12:59:38 GMT -5
Limonite & goethite can also show the colors and crystal growth of your specimen, I would agree with one of the other posters about the streak test, hematite streaks dark red to brownish red.
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