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Post by 1dave on Feb 14, 2015 12:58:45 GMT -5
I'm late to this thread, but agree with most conclusions. If it don't have feldspar, then it ain't granite. Once metamorphosis strikes, many new possibilities come into play, Garnet being major on the list. The black in that first photo looks like manganese feathers to me. And the red at the top of this photo looks like chalcedony bubbles. How dare you have so much fun? We all wish we were there.
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Post by washingtonrocks on Feb 14, 2015 12:59:59 GMT -5
I'll throw my hat in with gingerkid and say it's monzonite. Probably oligoclase with hornblende +/- biotite.
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garock
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Post by garock on Feb 14, 2015 18:26:16 GMT -5
Mr James ! You are correct about path to Chunky Gal. If you up there at least be out from there by Monday. The news weather people are saying lots of snow according to their "wooly worm" !
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jamesp
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Post by jamesp on Feb 15, 2015 3:48:59 GMT -5
Mr James ! You are correct about path to Chunky Gal. If you up there at least be out from there by Monday. The news weather people are saying lots of snow according to their "wooly worm" ! Thanks Frankie. For the directions and the weather warning. We just went to the upper Talullah for more quartzite and granite related material. Funny, the denser quartzite and garnet burdened cobbles were in the deeper water, and the lighter sandstones and porous materials on the higher rock bars. Will have to go when the water is warmer. I was surprised that the denser materials were segregated in such a manner. But that is one hard pounding river, and Tallulah River Road heading north to Tate City is spectacular. Please make a trip to drive up the road. It is basically a series of water falls for 5 miles. With the ability to sort 6-12 inch stones with out any effort by their density. River dropping about 100 feet in elevation per mile crossing at Tallulah River and Charlie's Creek, about the only level spot
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jamesp
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Post by jamesp on Feb 15, 2015 4:10:47 GMT -5
I'll throw my hat in with gingerkid and say it's monzonite. Probably oligoclase with hornblende +/- biotite. Much appreciated washington. Those 3 minerals are big players in this area. Garnets are in every other cobble. Some cobbles reaching 50% composition. Area famous for garnets, and some strange forms of probably rhodolite perhaps remelted in the denser quartz rich cobbles. The most common form of super dense quartzite textured rock that would break like hard glass was this one, in slightly different textures, some over 50 pounds, occurring way more common in the deeper water and base rock for the violent water flow Found little felspar, but garnet polka dotting the majority of the cobbles. Above sample looks like felspar spots, but the garnet concentration makes me wonder. I brought back some more and will saw it.
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jamesp
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Post by jamesp on Feb 15, 2015 5:22:43 GMT -5
More dots Horneblende crystals in may arrangements, these in poorly compressed /fused quartz sand
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spiritstone
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Post by spiritstone on Feb 15, 2015 6:20:05 GMT -5
First time i have seen a boat with wheels. Just as hard on gas I take it. Thanks for the trip! Its nice to see some green color after 5 months of snow and cold, 2 more to go before it starts to show life again.
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jamesp
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Post by jamesp on Feb 15, 2015 11:42:30 GMT -5
First time i have seen a boat with wheels. Just as hard on gas I take it. Thanks for the trip! Its nice to see some green color after 5 months of snow and cold, 2 more to go before it starts to show life again. The green is a moisture loving rhododendron called mountain laurel. It stays green year round spirit. Grows best around mist generating falls and north facing shady slopes. The deciduous trees are totally dormant, but the laurel is sure green. The laurel has a pink bloom, and rhodolite garnet is named after the rhododendron from this very area.
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Deleted
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Post by Deleted on Feb 15, 2015 12:19:18 GMT -5
Since I have poorly fused brain cells I would toss all three of those into the granite pile. Most everything I find that has three or more colors goes into the granite pile. Way less stuff to keep track of and remember. Keep teaching and maybe someday (if I live to 99) I will get it all sorted out. Jim
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jamesp
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Post by jamesp on Feb 15, 2015 15:08:32 GMT -5
Since I have poorly fused brain cells I would toss all three of those into the granite pile. Most everything I find that has three or more colors goes into the granite pile. Way less stuff to keep track of and remember. Keep teaching and maybe someday (if I live to 99) I will get it all sorted out. Jim This stuff is so closely related to granite. The dots perplexed me so I was wanting to get some opinions. So far, nothing but road gravel, ha, about all the rocks we have close by. Western folks lucky Jim.
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Deleted
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Post by Deleted on Feb 15, 2015 18:11:02 GMT -5
jamesp, I am going to do a thread on yesterday's hounding trip and you may change your mind. We have way too many rocks and it makes it difficult to find the good ones. I will admit that it is nice to have them if you can find them but sometimes I get overwhelmed. Jim
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Post by broseph82 on Feb 15, 2015 19:39:56 GMT -5
Where did you pull the Hummer from?
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jamesp
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Post by jamesp on Feb 16, 2015 0:53:39 GMT -5
jamesp, I am going to do a thread on yesterday's hounding trip and you may change your mind. We have way too many rocks and it makes it difficult to find the good ones. I will admit that it is nice to have them if you can find them but sometimes I get overwhelmed. Jim Aww, poor Jim. Let's see what ya found.
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jamesp
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Post by jamesp on Feb 16, 2015 0:54:48 GMT -5
Where did you pull the Hummer from? There was all kind of jeeps driving up and down the river.
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Post by gingerkid on Feb 16, 2015 14:53:05 GMT -5
oops, broseph82. I remember seeing your trip pics with fantastic5. Very fortunate that the dog alerted you to the lightning, garock. Enjoyed your pics, jamesp! Beautiful scenery, rocks, and your dogs look like they are having a blast. This is the one that looks like it may have garnets in it to me, but then again, I sure am not an expert.
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jamesp
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Post by jamesp on Feb 16, 2015 14:59:49 GMT -5
The cobbles have garnet measles in that river gingerkid. But nothing solid and gem grade. Lots of crushed glassy ones. Darn, failed to find killer quartzite, but will try when I can put my digits in the water for more than 10 seconds. the downstream location actually had better quartzite but river is deeper, so summer time w/the fur balls for a retry.
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Deleted
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Post by Deleted on Feb 16, 2015 18:48:07 GMT -5
jamesp, I am going to do a thread on yesterday's hounding trip and you may change your mind. We have way too many rocks and it makes it difficult to find the good ones. I will admit that it is nice to have them if you can find them but sometimes I get overwhelmed. Jim Aww, poor Jim. Let's see what ya found. LOL I see that you saw how many rocks I have to look at to find one good one (sometimes). There are other times that I can not carry it all. Jim
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jamesp
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Post by jamesp on Feb 18, 2015 6:41:58 GMT -5
Shopping from a boat allows barge transport @wampidy. Amazing how efficient it is. Collecting on that rough terrain earns my respect. Where's the helicopter !
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Post by orrum on Feb 19, 2015 9:17:10 GMT -5
Tumble some!!!!! Show pics!!!! Wanna see tumbles!!#
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jamesp
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Post by jamesp on Feb 19, 2015 13:14:49 GMT -5
Tumble some!!!!! Show pics!!!! Wanna see tumbles!!# Patience grasshopper, filled a big jug with knapping chips yesterday. They came in a big box and wife cussing as she brought it to the house. she hates my heavy rock boxes LOL. A LFRB of grit came with it, that stuff is real heavy. I am laughing at her, but not so much as to anger the delicate balance of taking advantage of her services. Ya know what I mean ? PS Driveway is half mile long, and then 50 foot walk to house from car.
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