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Post by bobby1 on Jul 19, 2008 17:01:34 GMT -5
I just got back from a 5 day trip with my grandson where we went to Lassen Park, Davis Creek for Obsidian, rock shops and a lot of other stuff. I haven't caught up on things yet but here are two pictures from the collecting at Davis Creek. This one is of a chunk that was sticking out of the bank at the digging hole. For some reason I had a feeling that this one was going to be a good one. For size, the tip of my rock hammer is on the right. I took a small chip off the edge and this is what popped out! In the next day or so I will be posting a lengthy dialog with multiple pictures. We really had a fun and productive time. (200 lbs of really good Davis Creek Rainbow Obsidian). Bob Bob
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Post by akansan on Jul 19, 2008 17:24:12 GMT -5
Oh wow! I love the colors on that one! Do you have to chip it just right to show the rainbow?
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Post by Jack, lapidaryrough on Jul 19, 2008 17:36:09 GMT -5
Just rainbow....No blue ?
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Post by bobby1 on Jul 19, 2008 18:10:37 GMT -5
Yes, you have to chip it so that you can look perpendicular to the color layers. Generally you can see indications of the layers on the outside of the material. This particular piece will probably only show red. Most will have rainbow colors including blue and green. Red or pink are the most common colors. I should have brought some water (other than the small drinking water bottles that I had) so that I could have washed the rocks off better. Often you can see the color areas in the material if it is brushed off or washed off without chipping it for a window. Bob
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lparker
fully equipped rock polisher
Still doing too much for being retired!
Member since March 2008
Posts: 1,202
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Post by lparker on Jul 19, 2008 19:23:06 GMT -5
What you have pictured is (maybe) what's called Pink Lady obsidian. Rainbow obsidian normally has all colors of the rainbow in it, not just a couple. There is an exception at Davis Creek where there is really wide banded rainbow. If you broke a chunk off it, you might only have one color. I've got a call out to get a list of named obsidian in Davis Creek. I'll post it if/when I get it.
Lee
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Post by bobby1 on Jul 19, 2008 20:02:39 GMT -5
I have a piece of bright green that weighed about 12 lbs that is predominantly green but it has various shades of green and some blue with no other colors that I got at Davis Creek about 15 years ago. A cab of it shows only the green. There is another site further north that is called the Pink Lady mine. I have never found anything there worthwhile. It was mined out years ago. The outer surface of that material had a significantly different appearance. The Davis Creek location has pure black, black(ish) and white(ish) bands, black with Mahogany streaks, rainbow and silver sheen all in the same place. There was a large block of material in the pit that I was in that had red/rainbow lying directly against a block that was silver banded. I haven't a clue as to how this could have formed that way. Here is a picture of the pit that I was digging in. There are some significant solid pieces (still) there. Some up to 12" on a side or bigger. Bob
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SteveHolmes
fully equipped rock polisher
Member since July 2009
Posts: 1,900
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Post by SteveHolmes on Jul 19, 2008 23:20:19 GMT -5
Bobbi, Thanks for sharing your trip with us. Looking forward to more pics. That 1st piece you chipped looks really nice. I think that would be a fun dig; especially with all those amazing and rainbow colors. Steve
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Post by Titania on Jul 21, 2008 7:57:39 GMT -5
Ooh, I love trip photos! Can't wait to see what else you've got in store for us!
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