what is the green bands in this rock |
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what is the green bands in this rock |
 Feb 22 2014, 09:30 PM
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#1
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Diggin' In!  Group: Members Posts: 12 Joined: 9-November 13 Member No.: 108,311  |
The rock looks like granite with a green mineral band in it. I found it today in a old dry creek bed about 2 miles from the mountains. I was out four wheeling in the bed and also looking for rocks and this one stood out like a sore thumb so I stopped and picked it up. The granite part scratches with a stainless steel pocket knife, the green part seem too not scratch. The granite parts scratches easily with quartz, the green part I have to really press down to get it to scratch. The green band is a dull olive green color and opaque. I am wondering if anybody knows what mineral the green band is.
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Feb 23 2014, 07:44 AM
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#2
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 Moderator Group: Members Posts: 4,459 Joined: 25-August 09 From: way on up thar Member No.: 6,983 |
Hi 400ltz,
Judging by your pics that looks like Unakite which is a moderately common gemstone in Colorado. Unakite consists of Pink Feldspar, Quartz, and Green Epidote. -------------------- /l ,[____], l---L-OlllllllO- ()_) ()_)--o-)_) BLACK SANDS MATTER! Very Happy CP Lifetime Member CP CORE TEAM Referral Code CE213 |
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Feb 23 2014, 08:39 AM
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#3
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 Master Mucker! Group: Admin Posts: 7,206 Joined: 7-October 03 From: Colorado Member No.: 4 |
Looks like Epidote to me also but hard to tell from just a photo.
-------------------- Education is the key to the future,
and participation opens the door to opportunity. Discover your prospecting independence & success! ColoradoProspector.com Owner/Webmaster Core team member ♥  |
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Feb 23 2014, 08:53 AM
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#4
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Diggin' In! Group: Members Posts: 12 Joined: 9-November 13 Member No.: 108,311 |
QUOTE (swizz @ Feb 23 2014, 06:44 AM)  Hi 400ltz, Judging by your pics that looks like Unakite which is a moderately common gemstone in Colorado. Unakite consists of Pink Feldspar, Quartz, and Green Epidote. I went and looked at some pictures on the internet and it looks just like Unakite. The pictures I looked at were more green than pink from the rock I have, it is more pink than green. I can hardly wait to get a new rock saw blade so I can start slicing up the rocks I have found. Thank You for the help, I was really curious what it was. |
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Feb 23 2014, 03:05 PM
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#5
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Moderator Group: Members Posts: 4,459 Joined: 25-August 09 From: way on up thar Member No.: 6,983 |
The amounts of green, pink, and quartz vary a lot.
Here are a few specimens from one of my claims. 
-------------------- /l ,[____], l---L-OlllllllO- ()_) ()_)--o-)_) BLACK SANDS MATTER! Very Happy CP Lifetime Member CP CORE TEAM Referral Code CE213 |
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Feb 23 2014, 05:59 PM
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#6
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Master Mucker! Group: Admin Posts: 7,206 Joined: 7-October 03 From: Colorado Member No.: 4 |
We would love to see what you do with them after you slice them up!
 Nice ones Chris, great color! -------------------- Education is the key to the future,
and participation opens the door to opportunity. Discover your prospecting independence & success! ColoradoProspector.com Owner/Webmaster Core team member ♥ |
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Mar 1 2014, 12:25 PM
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#7
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 Shovel Buster! Group: Members Posts: 71 Joined: 23-February 04 Member No.: 100 |
I second the guess of epidote.
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