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Thread: Some outcrops on the place.

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  1. #1

    Nov 2012
    129
    105 times
    All Types Of Treasure Hunting

    Some outcrops on the place.

    I have a small parcel, 12 acres, with many varied outcrops. The geology is crazy. Many dikes and metavolcanics and quartz veins in a schist country rock. I've been sampling and have found some very small [hand lens] gold fragments. A half dozen assays have returned 3-5 grams per ton on surface grab samples. One assay showed 1/2 ounce per ton. I would dig for specimens if I knew where to look, but I have'nt a clue. Red quartz, grey quartz, yellow quartz. Ultramafic veins, felsic veins, Biotite walls or tourmaline walls, brecia, clay gouge diorite porphery veins. I don't know whether to dig or to just walk away. A mining venture is probably out of the question due to cost, regs, and size of deposit. I would be happy with some nice specimens if I could find some . Any ideas?
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  2. #2
    us
    Jul 2004
    Angels Camp,Ca.
    691
    608 times
    Keep sampling where your getting the gold and make sure to tag each sample so you know where it came from.If gold is present in a vein it may be just fine gold,species pockets or any combination of the above.Check your small gold with a loupe and see if it's rough and/or has minute quartz attached to it.This often a sign for species or pockets,but not always.Wherever your finding the yellow follow that up,down or in(following the lead).
    Aufisher and Clay Diggins like this.

  3. #3
    us
    Hardrock prospector

    May 2017
    Middle Oregon
    Whites, Fisher, Garrett, and Falcon.
    801
    260 times
    Prospecting
    Both a gold type of metal detector and a falcon type of detector could help with finding 'Pockets of values'. Crushing and panning will help with the fine gold. Making a good log book on each sample area will help track down values,
    Aufisher likes this.

  4. #4
    se
    Sep 2006
    Sweden
    White's V3, Minelab Explorer II & XP Deus.
    5,846
    1533 times
    Prospecting
    Agree with Dave. I'd also keep an eye out for vugs or other things indicating "cavities" in the quartz/host rock where crystals could potentially grow.

    I'm curios about the tourmaline wall. Pics would be neat!
    Aufisher and Clay Diggins like this.
    Geologists are gneiss, tuff, and a little wacke.

  5. #5

    Nov 2012
    129
    105 times
    All Types Of Treasure Hunting
    EU here are some pics of the tourmaline wallrock on one of the veins. It's different than the tourmaline I find in pegmatite. Hydrothermal deposition I believe.
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  6. #6
    us
    Sep 2016
    Southern Arizona
    Fors for Gold +Whites GMT, Garrett ATX
    89
    60 times
    All Types Of Treasure Hunting
    How big are the tourmaline crystals? larger ones are of value, the gem and mineral show is around the corner here in Tucson, other good sources are fleebay, gem and mineral forums.
    Aufisher likes this.

  7. #7
    RTR
    RTR is offline
    us
    Roger

    Nov 2017
    Smith Mt. Lake Va.
    Old cheap ones
    141
    163 times
    All Types Of Treasure Hunting
    Second that on the Falcon.It will find a speck of gold in solid rock (smaller than the sample showedClick image for larger version. 

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  8. #8

    May 2013
    The Golden State
    Whites Goldmaster V/SAT. VibraProbe. Bazooka 48" Prospector Sluice. Shorts. Chickens + Goats + Goldhounds. 35' Chris Craft Caribbean motorsailer. FISH OIL + BURLAP
    1,879
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    Nice looking rocks, thanks for sharing!
    I am a teacher, hydrologist, biologist and a prospector.

  9. #9
    us
    Hardrock prospector

    May 2017
    Middle Oregon
    Whites, Fisher, Garrett, and Falcon.
    801
    260 times
    Prospecting
    Any crushing and panning on the samples yet? Any values?
    Thanks

  10. #10
    us
    Jul 2004
    Angels Camp,Ca.
    691
    608 times
    Quote Originally Posted by RTR View Post
    Second that on the Falcon.It will find a speck of gold in solid rock (smaller than the sample showedClick image for larger version. 

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ID:	1520576 here).
    .....But will it find a speck of gold that's two feet inside the vein in situ? No it won't and that's the reason you sample the veins properly.Any color found after samplinmg a quartz vein needs further sampling.
    Last edited by dave wiseman; Nov 28, 2017 at 05:11 PM.
    Clay Diggins likes this.

  11. #11

    Nov 2012
    129
    105 times
    All Types Of Treasure Hunting
    Thanks for all the replies. I went out and dug a little on a grey quartz vein a few days ago. The reason I keep going back to this vein is the quartz closely the ore from a nearby historical mine that had very rich ore, [ozs per ton]. I have yet to see visible to the eye gold there. It is very fractured in the vein, can dig out with screwdriver. It is close to a fault fissure feature and in a fine ground yellow clay. Biotite is the main accessory. Will try to crush and pan some soon. Took a couple pieces that were covered in limonite and soaked in hydrochloric acid. Didn't see any gold after. Am trying to concentrate on where I can see that fluids have penetrated. Hope springs eternal.
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  12. #12
    RTR
    RTR is offline
    us
    Roger

    Nov 2017
    Smith Mt. Lake Va.
    Old cheap ones
    141
    163 times
    All Types Of Treasure Hunting
    Quote Originally Posted by dave wiseman View Post
    .....But will it find a speck of gold that's two feet inside the vein in situ? No it won't and that's the reason you sample the veins properly.Any color found after samplinmg a quartz vein needs further sampling.
    I don't think I said IT will look thru "TWO feet of rock". However it did find this vein 1.75" inside this > Click image for larger version. 

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    And it will find a 2/100s grain of gold , 1" thru rock.
    Last edited by RTR; Nov 29, 2017 at 11:14 AM.
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  13. #13
    us
    Jul 2004
    Angels Camp,Ca.
    691
    608 times
    Quote Originally Posted by RTR View Post
    I don't think I said IT will look thru "TWO feet of rock". However it did find this vein 1.75" inside this > Click image for larger version. 

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    And it will find a 2/100s grain of gold , 1" thru rock.
    .........If that's the case ...Very impressive.

  14. #14
    us
    Hardrock prospector

    May 2017
    Middle Oregon
    Whites, Fisher, Garrett, and Falcon.
    801
    260 times
    Prospecting
    Yes the Falcon can have a range of about 1/2" - 3/4" for this one at times on larger values. Far deeper then one's eye's that is for sure. Thank you for the picture RTR as this can show the range of the Falcon. The Falcon is really slow for anyone used to swinging a larger coil that is for sure.

  15. #15
    us
    Hardrock prospector

    May 2017
    Middle Oregon
    Whites, Fisher, Garrett, and Falcon.
    801
    260 times
    Prospecting
    Quote Originally Posted by 605dano View Post
    Thanks for all the replies. I went out and dug a little on a grey quartz vein a few days ago. The reason I keep going back to this vein is the quartz closely the ore from a nearby historical mine that had very rich ore, [ozs per ton]. I have yet to see visible to the eye gold there. It is very fractured in the vein, can dig out with screwdriver. It is close to a fault fissure feature and in a fine ground yellow clay. Biotite is the main accessory. Will try to crush and pan some soon. Took a couple pieces that were covered in limonite and soaked in hydrochloric acid. Didn't see any gold after. Am trying to concentrate on where I can see that fluids have penetrated. Hope springs eternal.
    Just a idea is with picture #2 try collecting the vein lines in the brown material next to the clear quartz and crush and pan that to see if there is any values. If you do find some values maybe try a Falcon detector out in the field to collect the better zone material for crushing and panning. The richer values may be in very dirty quartz and a Falcon detector or any gold type of detector could be of some use there as well. Think of the metal detector as a pinpointing tool to help find 'Sweet spots' to crush and pan as the real sample test and make a log book to help track down possible collector samples if that is what you are after. Keep us posted and thank you for the pictures 605dano

 

 
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