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tenderfootminer
22:25:56 Tue
Apr 14 2009

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Tenderfoot creek File.

I now have aeromagnetic survey maps and coplaner resistivity maps for my area(thanks Kringle). Question now is how do I read them? sounds funny but they are a little bit confusing to me...:confused: thanks in advance for any info!....ws
[1 edits; Last edit by tenderfootminer at 05:16:40 Tue Jan 12 2010]

  
kringle_mining
04:17:35 Wed
Apr 15 2009

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Re: reading maps!


Town of Wreeka on Tenderfoot Creek

[1 edits; Last edit by kringle_mining at 17:48:33 Sat Jan 2 2010]

  
tenderfootminer
05:59:45 Wed
Apr 15 2009

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Re: reading maps!

cant figure out cut/paste on them but got the short cut I hope lol http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=15421&quadID=59&quadname=Big Delta http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=3256&quadID=59&quadname=Big Delta hope these are the ones ...ws
[2 edits; Last edit by tenderfootminer at 06:34:47 Wed Apr 15 2009]

  
tenderfootminer
06:37:41 Wed
Apr 15 2009

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Re: reading maps!

well I cant seem to cut and copy these maps? but I will keep working on it:smile:

  
Dennis_G
02:12:49 Thu
Apr 16 2009

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Re: reading maps!

Try taking a screenshot and posting that.

Dennis
http://www.alaskafreegold.com

  
kringle_mining
14:34:04 Thu
Apr 16 2009

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Fixed Wing Aeromagnetic Survey

Lockwood, Kessler & Bartlett, Inc., 1973
Aeromagnetic survey, East Alaska Range, Big Delta (B-5), Alaska, scale 1:63,360, .PDF









[4 edits; Last edit by kringle_mining at 19:18:35 Sat Jan 2 2010]

  
tenderfootminer
20:32:13 Thu
Apr 16 2009

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Re: reading maps!

thanks guys I am having some computer probs so when I get it fixed I will try .:smile:

  
kringle_mining
16:58:15 Sun
Apr 19 2009

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Fuego Mag map going on this post


Title: Total magnetic field of the Richardson mining district, interior Alaska
Authors: Burns, L.E., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp.
Publication Year: 2004







[5 edits; Last edit by kringle_mining at 04:07:29 Sun Jan 3 2010]

  
kringle_mining
17:20:04 Sun
Apr 19 2009

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Resistivity measure in Ohms

7200 Hz coplanar apparent resistivity of the Richardson mining district, interior Alaska

by
Burns, L.E., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp. 2004







[5 edits; Last edit by kringle_mining at 02:48:34 Sun Jan 3 2010]

  
kringle_mining
17:24:09 Sun
Apr 19 2009

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Resistivity measure in Ohms 900hz

Title: 900 Hz coplanar apparent resistivity of the Richardson mining district, interior Alaska
Authors: Burns, L.E., Fugro Airborne Surveys Corp., and Stevens Exploration Management Corp.
Publication Year: 2004









[3 edits; Last edit by kringle_mining at 05:02:51 Sun Jan 3 2010]

  
tenderfootminer
22:37:24 Sun
Apr 19 2009

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Re: reading maps!

wow thanks Kringle.:smile:

  
kringle_mining
16:30:34 Fri
Apr 24 2009

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Re: reading maps!

Hey Walt,
I didn't forget about this thread. I am just looking for the geology map of this location.
[1 edits; Last edit by kringle_mining at 08:13:51 Sun Jan 3 2010]

  
tenderfootminer
17:26:57 Fri
Apr 24 2009

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Re: reading maps!

no problem I still have some computer issues lol come on spring time!!! I think I will be heading to mine in a week or so so no more computer for while:smile:

  
kringle_mining
17:52:04 Sat
Apr 25 2009

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Reference List from midat.org



Banner Dike Zone Prospects, Fairbanks District, Fairbanks North Star Borough, Alaska, USA

Location: The Banner Dike Zone is situated in the Banner Creek (BD001) drainage approximately 2 miles north of the town of Richardson on the Richardson Highway. The full extent of the Banner Dike Zone is not well defined. It is situated approximately 3 miles west of the Buckeye Zone (BD048) and about 1.5 miles southeast of the Democrat Lode (BD014). The approximate center of the zone is in SW1/4SE1/4 section 10, T. 7 S., R. 7 E., of the Fairbanks Meridian. Numerous unimproved roads provide access to the Banner Creek drainage. It was not identified as a separate location by Cobb (1972) or by Cobb and Eberlein (1980).
Geology: The Richardson area is characterized by gentle slopes and broad, alluvium-filled valleys (Prindle and Katz, 1913, p. 140). The area is unglaciated and largely overlain by windblown silt, sand, and loess, locally up to 50 meters thick (Foster and others, 1979). The bedrock in the region comprises greenschist to amphibolite facies schist, marble, and gneiss that have been intruded by various igneous bodies (Bundtzen and Reger, 1977, p. 29). The schist and marble are probably Paleozoic, and the gneiss has a probable protolith of Precambrian and Paleozoic sedimentary and igneous rocks (Weber and others, 1978). The intrusive bodies in the area range in composition from rhyolite to andesite. Fine-grained rhyolite containing quartz and feldspar phenocrysts is common throughout the area (Olson and others, 1985). At the nearby Democrat Lode (BD014), the rhyolite contains arsenopyrite, gold, and pyrite, and is albitic, clay, and sericite altered (R.J. Newberry, oral communication, 1998). Structurally, the Richardson region is cut by a northwest-trending fracture system termed the Richardson Lineament. The lineament appears to correspond to the distribution of the rhyolite and other intrusive bodies and placer gold deposits (Bundtzen and Reger, 1977, p. 29). Also, the lineament tends to separate gneissic rocks to the northeast from schistose rocks to the southwest (Swainbank and others, 1984). The extent of the Banner Dike Zone is not well defined, but it appears to trend northwest-southeast and is subparallel to the nearby Democrat Lode (BD014). The zone is defined by mineralized areas of strongly-fractured, limonite-stained, altered quartz-sericite-pyrite gneiss that is cut by rhyodacite dikes. Gold mineralization in the Banner Dike Zone is characterized by quartz veinlets containing gold and silver, and arsenic, and quartz veinlets that contain silver, arsenic, antimony, lead, and zinc. The best assay results range between 0.026 to 0.05 ounces/ton Au and 2.3 to 5.0 ounces/ton Ag (F.L. Blystone, press release, 1998). Sulfide assemblages include variable combinations of arsenopyrite, galena, pyrite, stibnite, and Pb-Sb sulfosalts (K. Ausburn, oral communication, 1998). The zones of mineralization are open to the northwest and southeast along strike (F.L. Blystone, press release, 1998). Placer gold was first discovered in the Richardson district in 1905. Mining initially occurred on the nearby Tenderfoot Creek (BD039) and expanded to Banner Creek and associated tributaries. After peak gold production in 1908, mining in the area declined (Olson and others, 1985). In 1998, an exploration program consisting of reconnaissance mapping, stream-sediment, heavy-mineral concentrate, and rock-chip sampling was conducted in the Richardson area. A total of 182 rock-chip samples were collected from 38 prospect pits and 109 pan concentrates from local streams. The Banner Dike Zone has been prospected in a 3,000- by 1,000-foot area (F.L. Blystone, press release, 1998). There has been no gold production from the Banner Dike Zone prospect.
Workings: Placer gold was first discovered in the Richardson district in 1905. Mining initially occurred on the nearby Tenderfoot Creek (BD039) and expanded to Banner Creek and associated tributaries. After peak gold production in 1908, mining in the area declined (Olson and others, 1985). In 1998, an exploration program consisting of reconnaissance mapping, stream-sediment, heavy-mineral concentrate, and rock-chip sampling was conducted in the Richardson area. A total of 182 rock-chip samples were collected from 38 prospect pits and 109 pan concentrates from local streams. The Banner Dike Zone has been prospected within a 3,000- by 1,000-foot area (F.L. Blystone, press release, 1998).
Production: There has been no gold production from the Banner Dike Zone prospect.

Commodities (Major) - Au; (Minor) - Ag, As, Pb, Sb, Zn
Development Status: None
Deposit Model: Plutonic-related mesothermal, shear-hosted deposit






References:

Bundtzen, T.K., and Reger, R.D., 1977, The Richardson lineament--A structural control for gold deposits in the Richardson mining district, Alaska, in Short notes on Alasakan Geology, 1977: Alaska Division of Geological and Geophysical Surveys Geologic Report 55, p. 29-34.

Chapin, Theodore, 1914, Placer mining in the Yukon-Tanana region: U.S. Geological Survey Bulletin 592-J, p. 357-362.

Cobb, E.H., and Eberlein, G.D., 1980, Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in the Big Delta and Tanacross quadrangles, Alaska: U.S. Geological Survey Open-File Report 80-1086, 77 p.

Eberlein, G.D., Chapman, R.M., Foster, H.L., and Gassaway, J.S., 1977, Map and table describing known metalliferous and selected nonmetalliferous mineral deposits in central Alaska: U.S. Geological Survey Open-File Report 77-168-D, 132 p., 1 sheet, scale 1:1,000,000.

Menzie, W.D., and Foster, H.L., 1979, Metalliferous and selected nonmetalliferous mineral resource potential in the Big Delta quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-529-D, 61 p., 1 sheet, scale 1:250,000.

Metz, P.A., and Hawkins, D.B., 1981, A summary of gold fineness values from Alaska placer deposits: University of Alaska, Fairbanks, Mineral Industry Research Laboratory Report No. 45, 56 p.

Olson, B.G., Burton, J., Wolff, E.N., and Swainbank, R.D., 1985, Mining and minerals in the golden heart of Alaska: Fairbanks North Star Borough Publication, 80 p.

Prindle, L.M., and Katz, F.J., 1913, Detailed description of the Fairbanks district, in Prindle, L.M., A geologic reconnaissance of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Bulletin 525, p. 59-152.

Swainbank, R.C., Burton, J.P., and Metz, P.A., 1984, Bedrock geology of the Richardson mining district, Alaska: University of Alaska, Mineral Industry Research Laboratory Open-File Report 84-2, 60 p., 4 maps, scale 1:40,000.

Weber, F.R., Foster, H.L., Keith, T.E.C., Dusel-Bacon, Cynthia, 1978, Preliminary geologic map of the Big Delta quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-529-A, 1 sheet, scale 1:250,000.

[1 edits; Last edit by kringle_mining at 18:27:33 Fri Jan 1 2010]

  
tenderfootminer
04:42:08 Wed
Dec 30 2009

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Re: Reference List from midat.org

bump

  
Geo_Jim
06:53:35 Thu
Dec 31 2009

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Re: Reference List from midat.org

Here is what is says on Wikipedia and to my knowledge this is accurate.
"An aeromagnetic survey is a common type of geophysical survey carried out using a magnetometer aboard or towed behind an aircraft. The principle is similar to a magnetic survey carried out with a hand-held magnetometer, but allows much larger areas of the Earth's surface to be covered quickly for regional reconnaissance. The aircraft typically flies in a grid-like pattern with height and line spacing determining the resolution of the data (and cost of the survey per unit area).

"As the aircraft flies, the magnetometer records tiny variations in the intensity of the ambient magnetic field due to the temporal effects of the constantly varying solar wind and spatial variations in the Earth's magnetic field, the latter being due both to the regional magnetic field, and the local effect of magnetic minerals in the Earth's crust. By subtracting the solar and regional effects, the resulting aeromagnetic map shows the spatial distribution and relative abundance of magnetic minerals (most commonly the iron oxide mineral magnetite) in the upper levels of the crust. Because different rock types differ in their content of magnetic minerals, the magnetic map allows a visualization of the geological structure of the upper crust in the subsurface, particularly the spatial geometry of bodies of rock and the presence of faults and folds. This is particularly useful where bedrock is obscured by surface sand, soil or water. Aeromagnetic data was once presented as contour plots, but now is more commonly expressed as colored and shaded computer generated pseudo-topography images. The apparent hills, ridges and valleys are referred to as aeromagnetic anomalies. A geophysicist can use mathematical modeling to infer the shape, depth and properties of the rock bodies responsible for the anomalies.

"Aeromagnetic surveys are widely used to aid in the production of geological maps and are also commonly used during mineral exploration. Some mineral deposits are associated with an increase in the abundance of magnetic minerals, and occasionally the sought after commodity may itself be magnetic (e.g. iron ore deposits), but often the elucidation of the subsurface structure of the upper crust is the most valuable contribution of the aeromagnetic data."
Aeromag is a geologic mapping tool. It is used with on the ground geology to extent the bedrock geology under areas where it is covered. So aeromag data is used with ground truth. Yes, there is speculation involved with this process. The farther you go from the ground truth, the greater the speculation and risk. So if you are thinking that there is a magnetic high or low there caused by an intrusion of igneous rocks, but you have no geology to verify it; then you are skating on thin ice.
Geo Jim

  
kringle_mining
19:19:11 Thu
Dec 31 2009

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USGS OF 78-529a



Preliminary Geologic Map of the Big Delta Quad OF-529A



[1 edits; Last edit by kringle_mining at 20:52:31 Thu Dec 31 2009]

  
kringle_mining
02:02:40 Fri
Jan 1 2010

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Old Mine site

I need to down load two more magnetic maps and one resistivity map plus the legends. But studying this mine site as a target would be doable.





Click on this link for placer/ Lode history
USGS Reference list





[3 edits; Last edit by kringle_mining at 18:02:25 Fri Jan 1 2010]

  
tenderfootminer
02:09:55 Fri
Jan 1 2010

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Re: Old Mine site

Kringle I appreciate all yours and everyone elses input thanks!where that mine site is is just out of my claims real wet anyway but from there to river is doable :smile:
I will try to put up where my boundrys are if I can figure it out lol happy new years all!

  
kringle_mining
04:01:09 Fri
Jan 1 2010

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Re: Old Mine site

Walt's claims are in that location so he should be able to get a variety of float cobble/rocks representatives of bedrock units . DGGS in Fairbanks has a suseptability meter and geos who will test his rocks with the meter if necessary. It would be nice to get a few of the rocks posted on this thread.
[1 edits; Last edit by kringle_mining at 04:02:32 Fri Jan 1 2010]

  
aumbre
09:36:56 Fri
Jan 1 2010

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Re: Outline of proposed activity

1 Commodity being sought.
Gold.
Silver and base minerals.
Any economic mineral deposit?
2 Possible mineral deposit profile.
Placer.
Lode.
3 Project Area.
4 Available Resources.
[4 edits; Last edit by aumbre at 16:18:26 Sun Jan 3 2010]

  
kringle_mining
18:43:16 Fri
Jan 1 2010

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Magnetic Suseptibilitys/ Garth Grahm Thesis

Wiz,
I need to do some reference reading before I will hazard a geo interpretation.

This link to a paper/ chart on Magnetic Suseptibilities on Banner Ck. and Buck Mountain Richardson District Alaska

  
aumbre
18:44:51 Fri
Jan 1 2010

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Re: Outline of proposed activity

I would also ask if tenderfoot really would want this attention it may focus on this area.

  
tenderfootminer
19:40:22 Fri
Jan 1 2010

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Re: Outline of proposed activity

wow allI can say ! first of all I would love any help and don't mind the attention to the area.I basicaly was planning on stripping somewhere on the bench this summer a couple of acres to start thawing and try a test cut.I have been working the old tailing piles from the shafts of the old workings.I would love to jump up to a bigger operation just depends on finances.Another issue I am working on is the whole area had core drills done in the 70's but I don't know by whom or where the results are,all i have is gossip.I do know the last guy to work the bench was doing well by all acounts but can't talk to him about it as he is in jail for double murder :devil:If I need samples for ya what am I looking for or where etc. i will gladly get whatever ya need but the geo part is all new to me so....Lastly any of my friends on here are always welcome on my claims to play etc. as it is a family hobby mine and we enjoy the company and knowledge we get from the other miners/prospectors:welcome:

  
tenderfootminer
02:51:46 Sat
Jan 2 2010

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Re: Outline of proposed activity

I am a little confused which pictures ya saw Geo most of the ones I have taken are of old workings but on that note,what i have dug down seems like silt/topsoil for 4-10ft and then its gravely rock layers on down bedrock is very deep from the old miners reports 150-180ft. this is why I was looking at the bench to find shallower gold.The old bench workings from the 70's has a cut bank and it has 40+ft of silt almost like sandbox material and they went 80ft shafting there till hit a old drift and flooded them out A6inch pump full time to stay ahead eventualy shut em down.maybe I am confused but do I need a sample from bedrock or pay streak atleast and if so won't that meen core drilling or something?Let me know if I am way lost lol.as for other ground around me the only I can find is up on the top of the bluff north of me or the bluff towards fbks, and they are quite the hill side.I was assuming they would not be worth the bother maybe a bad assumtion ? any way thanks for being patient with me.On another note the creek has at least fine gold anywhere ya stick a dredge and I thought it was mostly from running through the old piles for years,as it has been moved all over the vally in the old days and every pile I get into has at least enough color to keep digging into.Maybe I am wrong since they must of found some gold in the creek to start the huge job of shafting??the amounts of amalgamated gold is another clue why I think it is from old workings ? there are several shafts that where "capped"for summer 100yrs ago and I believe are still open they capped em to keep summer heat from thawing the perma frost so maybe I could use the walls of them for sampling?I have an underwater camera that I sent down them with 12 volt lights and its very interesting looking.anyway thx for the time and help:smile: Sat and thought for a minute and wondered there is a shaft every 100or so ft. all the way along the "creek drainage"would the old bed rock piles beside them give an idea for sampling? ?
[1 edits; Last edit by tenderfootminer at 02:58:29 Sat Jan 2 2010]

  
tenderfootminer
04:11:15 Sat
Jan 2 2010

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Re: Outline of proposed activity

Got ya makes some sense 'GRIN" yes the pictures you see where on tenderfoot creek however they are 100 year old "tailing piles" I was digging into.

  
kringle_mining
18:44:32 Sat
Jan 2 2010

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Pictures of the Stockwell sampling at Tender foot Creek


Do you own a GPS? I was thinking may be you could sketch out the locations of the shafts and we could map them with the coordinates off your GPS. We can plot where you have sampled and also maybe the coordinates of some of the other active mines on the creek.

If you could also take some close up of your rock types that would be cool.

Sampling and Gold at Tenderfoot Creek Alaska

  
tenderfootminer
19:07:44 Sat
Jan 2 2010

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Re: Pictures of the Stockwell sampling at Tender foot Creek

Yes I own a gps. the shaft locations would be easy as well as where I have sampled.There is a shaft every 100-200ft along the south/east side of the creek all the way from the mouth to the highway.As for pictures are we talking about material from the shafts or surface? :smile: Beside every shaft there are piles of overburden and material that i assume just wasn't good enough to haul to water and also piles of bedrock chunks as these piles are old moss and trees have grown on them and makes it harder to determine what they are.I have taken a scoop out of most of the ones that are accesible but have several I want to check into since they are in the swamp and i know they haven't been tested much in the past also they where a long ways from water back then so only the best pay was hauled to wash.My metal detecting buddies have wandered over the piles and pulled nuggets out of most of the piles making it even more confusing as which pile is worth washing so far everyone pays enough that me and the boys can pull enough to pay for grub and fuel to keep looking.I had 2 teen agers come work for a day with there keene combo highbanking for a couple hours and they pulled 1/4 oz.anyway temp. dropped to -40 so will wait for it to warm a bit for picture taking ...ws
[1 edits; Last edit by tenderfootminer at 19:20:08 Sat Jan 2 2010]

  
kringle_mining
06:26:24 Sun
Jan 3 2010

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Geo Chem / CH3


Title: A geochemical investigation in the Richardson area, Big Delta Quadrangle, Alaska
Authors: Saunders, R.H.
Publication Year: 1965





Click on this link for the Report to the above sample locations




[2 edits; Last edit by kringle_mining at 06:42:03 Sun Jan 3 2010]

  
aumbre
16:26:28 Sun
Jan 3 2010

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Re: Project area.

I'm still unsure of the proposed project area- or are we talking about section 32- or TF creek below the arrow on the topo map?
[1 edits; Last edit by aumbre at 16:28:03 Sun Jan 3 2010]

  

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