Copper?

polishedball noticing nice landscape pebbles Member since August 2014 Posts: 89	Copper? Sept 17, 2014 18:01:53 GMT -5 via Tapatalk Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by polishedball on Sept 17, 2014 18:01:53 GMT -5 Anyone recognize what this might be, seems to have copper sprinkled in it. Thanks

snowmom still telling self it's just a hobby Curiosity is one of the permanent and certain characteristics of a vigorous intellect. Member since April 2014 Posts: 4,480	Copper? Sept 18, 2014 4:47:41 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by snowmom on Sept 18, 2014 4:47:41 GMT -5 Don't see anything that looks metallic in the photo? Pretty neat rock- that will look great polished.

150FromFundy
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Member since February 2009
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Copper? Sept 18, 2014 19:07:52 GMT -5

Quote

Post by 150FromFundy on Sept 18, 2014 19:07:52 GMT -5

My guess is it is a metamorphic rock. Originally a red (feldspar) and black (hornblende or biotite) granite was squeezed and partially melted and fractured along a contact zone. The fractures were then later filled with white quartz, agate, or chalcedony.

If there is copper in it, you should see secondary minerals or oxides (green and blue) or metallic copper along the cut face.

But hen again, it's hard to tell from one photo.

Darryl.

Deleted Deleted Member Member since January 1970 Posts: 0	Copper? Sept 18, 2014 23:49:45 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Deleted on Sept 18, 2014 23:49:45 GMT -5 could the metallic flash you are seeing be pyrite?

captbob no longer being taken for granite St. Pete FL Member since December 2007 Posts: 8,186	Copper? Sept 19, 2014 0:25:00 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by captbob on Sept 19, 2014 0:25:00 GMT -5 How 'bout Bronzite - do you know where it was found?
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leadbelly713 starting to spend too much on rocks Member since June 2011 Posts: 104	Copper? Sept 19, 2014 11:36:52 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by leadbelly713 on Sept 19, 2014 11:36:52 GMT -5 Your specimen has similar colors to a manganese ore I found years ago. But like fundy said it's hard to tell from a picture.

snowmom still telling self it's just a hobby Curiosity is one of the permanent and certain characteristics of a vigorous intellect. Member since April 2014 Posts: 4,480	Copper? Sept 20, 2014 4:22:19 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by snowmom on Sept 20, 2014 4:22:19 GMT -5 I love that it seems to be brecciated(my favorite kind or rock) and infilled with that white matrix...I would love to see a slab of this polished. Whatcha gonna do with this rock?

Fossilman Cave Dweller Member since January 2009 Posts: 20,723	Copper? Sept 20, 2014 8:34:48 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Fossilman on Sept 20, 2014 8:34:48 GMT -5 Sorry,I see no copper.....Nice piece of rough though...
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