what is the green bands in this rock |
Colorado Prospector - Gem and mineral prospecting and mining forums > Prospecting, Mineral Collecting and Treasure Hunting Forums > Gem and Mineral Specimen Finds or Processeswhat is the green bands in this rock |
 Feb 22 2014, 09:30 PM
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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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 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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400ltz what is the green bands in this rock Feb 22 2014, 09:30 PM
400ltz QUOTE (swizz @ Feb 23 2014, 06:44 AM) Hi ... Feb 23 2014, 08:53 AM
Mrs.CP Looks like Epidote to me also but hard to tell fro... Feb 23 2014, 08:39 AM swizz The amounts of green, pink, and quartz vary a lot.... Feb 23 2014, 03:05 PM Mrs.CP We would love to see what you do with them after y... Feb 23 2014, 05:59 PM Phil(NM) I second the guess of epidote. Mar 1 2014, 12:25 PM |
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