Thursday, November 19, 2009

Tips on Getting More Dry Placer Gold (Part 3)

Gold Concentrates
Gold Pans
Gold Concentrators

This is the 3rd installment of my series of posts on getting more dry placer gold:

Tip Number 2: Look Higher Up (Continued)

3) Once you’ve taken a look at nearby terraces (provided they are part of local dry placer layout), the next step is to spend a bit of time sampling adjoining slopes or hillsides. Often these slopes or hillside areas will show evidence of past mining activities as well, including test pits, tailings, and “coyote holes.” Coyote holes can be found in many dry placers in the Southwestern U.S. and invariably consist of a small circular opening that leads into a larger excavated “room” with walls and a low ceiling consisting of old, tightly cemented auriferous gravels.

Typically a coyote hole entrance is barely large enough for a person to crawl through and once inside the only “shoring” is the rock and gravel that surrounds you. NEVER, EVER enter old coyote holes to sample or metal detect, especially if you are out in the field alone. Even if you are “buddied up” being inside an old coyote hole is about as unsafe as entering old mine shafts…neither one is a good idea if you value life and limb. Once inside that coyote hole it might take just one swing of a rock hammer or a miner’s pick to bury yourself alive. Since I am claustrophobic to begin with, that’s the stuff of nightmares for me (as it should be for you as well).

Intriguing Aspects of Slopes and Hillsides

Anyway, the reason those coyote holes are there in the first place is because the oldtimers figured out that many ancient gravels were left high and dry some distance above existing washes and arroyos. Additionally, “ethnic” miners such as the Chinese or Mexicans were not allowed to work the best ground in any gold district and were often forced to work secondary gravels located some distance away from what the oldtimers considered to be the best diggings. Don’t let this fool you though. I’ve seen some nice gold recovered from slopes or hillside areas, including a beautiful arrowhead-shaped nugget weighing over one troy ounce. Additionally, locations such as the Rattlesnake Canyon area of Southern California can consistently produce good slope and hillside dry placer gold.

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Another intriguing aspect of these slope or hillside areas is that they are quite frequently cut vertically by smaller gullies or washes that can contain decent gold values. Some years back I was prospecting an old dry placer area here in New Mexico (now off limits to one and all) and found myself following a tiny dry streambed uphill. That little gully or wash contained amazing amounts of fine gold interspersed with coarser pieces or “chunkers” sitting on shallow bedrock packed with coarse black sand. If I could have spent more time there with plenty of water or a good motorized dry washer I believe I could’ve done some serious damage in terms of gold recovery to the tune of many troy ounces. Since this area belonged to a major mining corporation involved in mine reclamation work I had to forgo any thoughts of “setting up shop.” So it goes….

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Anyway there is more to come on the subject of getting more dry placer gold. So stay tuned.

If you liked this post, you may want to read: “Tips on Getting More Dry Placer Gold (Part 2).”

http://goldbedrockgold.blogspot.com/2009/11/tips-on-getting-more-dry-placer-gold_17.html

© J.R. 2009

Questions? E-mail me at jr872vt90@yahoo.com

Tuesday, November 17, 2009

Tips on Getting More Dry Placer Gold (Part 2)


Treasure Hunting
Gold Concentrators
Metal Detectors

As promised, here is the second post in my series on getting more dry placer gold:

Tip Number 2: Look Higher Up

We all know that deposition physics tells us that gold will always seek the lowest point possible in a streambed. Although this is true in most instances it does not “hold water” in every circumstance.

Once again, primarily because of their infrequent water flows, dry or desert placers always provide the greatest exceptions to basic gold deposition rules. Sure, you can still find gold in dry placers at typical deposition locations such as inside bends, behind large obstructions, and resting on false or real bedrocks, but not always. Sometimes you have to look higher up.

Let Me Guess…

Take a moment right now to stop and think about your favorite dry placer location and where you usually find yourself sampling or running material. Now let me take a guess as to where that is. Hmmmmmm…. somewhere in the lower areas of that wash, gully, or arroyo correct? I also suspect my guess is accurate about 70-80% of the time.

Now if my guess is indeed accurate and you are consistently getting decent gold values working the lower portions of that wash or arroyo then more power to you my friend. There’s no reason for you to move….at least not for now. But if you’re struggling in that wash or arroyo you need to start looking higher up.

What’s higher up? Let’s take it in stages:

1) The first step or stage is to shift your sampling or mining focus to the walls or sides of that wash or arroyo where you see gravel and rocks similar to those found in the wash itself. These are “bench” type gravels that have been left high and dry by the current stream course and that can, at times, contain good gold values. Keep your eyes peeled here for evidence of coarse black sand stringers or layers, especially if they also exhibit areas of reddish oxidation from ferrous metals. You may also want to run a good gold-seeking metal detector very slowly and carefully over these rocks and gravels…trust me, more than one nice nugget or pocket of placer gold has been found this way.

2) The next level to consider includes any and all “terraces” adjoining the wash or arroyo or left as “islands” in the middle or forks of that wash. Terraces are somewhat level areas sitting above the wash itself and they can contain boulders, trees, and various sorts of desert bushes and brushes. Sometimes you will spot evidence of old diggings such as shallow pits and tailings piles left by the oldtimers. That means they were getting gold out of that terrace and chances are you can too. But even without indications from previous mining efforts, terraces should always be sampled or "swept" carefully with a metal detector.

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I'll continue with additional "looking higher up" gold-getting tips in a subsequent post. Until then keep the faith out there.

If you liked this post, you may want to read: "Tips on Getting More Dry Placer Gold (Part 1)"

http://goldbedrockgold.blogspot.com/2009/11/tips-on-getting-more-dry-placer-gold.html

(c) J.R. 2009

Questions? E-mail me at jr872vt90@yahoo.com

Friday, November 13, 2009

Tips on Getting More Dry Placer Gold (Part 1)

(Crystalline coarse placer gold nuggets from a dry placer.)

Now I'm Really Gonna Drive You Crazy

With the advent of cooler weather many of you out there will be forsaking those river placer claims for various dry placer districts. This is as it should be, particularly if you live in the Western or Southwestern U.S. where, at times, the best of both small-scale mining worlds can be had.

Mining Equipment
Gold Concentrates
Gold Concentrators

Still, for many months now you've heard me lecture you on the "ins and outs" of getting the gold on wet claims, especially when it comes to following the dictates of stream hydrology and deposition physics. Now I'm really gonna drive you crazy by providing some dry placer gold recovery tips that, in some instances, contravene some of the rules I've been trying to pound into your head when it comes to the basics.

Dry Placers Don't Always Conform to the Rules

Now take a deep breath before you dismiss me as a whack job! I do know what I'm talking about here, believe it or not. And one rule we can dismiss right here and now is this: dry or desert placers DO NOT always conform to hydrological or depositional rules when it comes where the gold should be.

In other words, as I've alluded to elsewhere in "Bedrock Dreams," dry or desert gold placers can fool you quite readily in this regard. Since dry wash or arroyo hydraulics are based on sudden flash-flood events or other, less intense and intermittent water flows, the gold within those washes and arroyos doesn't always end up where it's supposed to be. Then again, sometimes it does.

No Guarantees Here

Therein lies the quandary of getting more gold in dry placers. Sometimes all our hard-earned small-scale mining knowledge and experience works just fine and yet, at other times, leaves us scratching our heads in terms of figuring out where the best gold values are in a given wash or arroyo.

So the purpose of this series of posts is to provide you with some basic tips for dealing with this problematic aspect of dry placers and in the process, perhaps "steer" you to the gold. There are no guarantees here, but the information I'll dispense in these posts has worked well for me in the past and it should for you too, providing you apply yourself to the effort openly and earnestly.

Ready?

Here's Tip Number 1:

Don't strictly or slavishly apply wet placer principles to dry placer environments.

Sure, "fundamentals is fundamentals." But what you learned working that claim along the North Yuba River or the Middle Fork of the American this summer is not necessarily going to get you the gold at Randsburg, the King Tut placers, or the Potholes.

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Start learning to "see" differently, to think differently, and most of all, act differently. Use your pre-existing mining knowledge as the BASIS for a new type of mining approach that combines the old with the new.

Got it? Good.

More tips on this subject will be coming your way soon. Make use of them why don't you?

If you liked this post, you may want to read: "California Gold Districts: Carson Hill/Melones"


(c) J.R. 2009

Questions? E-mail me at jr872vt90@yahoo.com

Monday, November 9, 2009

California Gold Districts: Carson Hill/Melones


(Calaveras County, California.)


Treasure Hunting
Gold Concentrators
Metal Detectors

One of the Southern Motherlode's Richest Districts

As many of you probably already know, California’s Motherlode region is divided into 2 basic areas: the Southern Motherlode (sometimes called the southern mines) and the Northern Motherlode (or northern mines). Both parts of the Motherlode contain numerous gold districts which continue to produce respectable amounts of placer and hard rock gold for small-scale miners.

One of the richest gold districts in the Southern Motherlode was the Carson Hill/Melones District, located in southwestern Calaveras County. The District extends in a southeasterly direction from Carson Flat to the communities of Carson Hill and Melones, the latter of which is situated along the beautiful Stanislaus River.

Placer and Lode Gold Discoveries

Placer gold was first discovered in the District in 1848 by James Carson who found large quantities of the yellow metal in a creek that would later be named after him. Aspiring placer miners soon “rushed” Carson’s diggings and spread out through the surrounding foothills.

A little over 2 years later lode or vein gold in quartz was found near what would become the Morgan Mine. By 1851 the thriving mining boomtown of Melones supported a population in excess of 5,000 souls.

195 Troy Pounds of Gold

Melones (Spanish for melons) derived its name from the watermelon seed-shaped nuggets that were prevalent in many of the District's placers and which were recovered in staggering amounts from unbelievably rich surface pockets scattered throughout the area. To substantiate this statement, the largest gold mass or nugget ever recovered in California was unearthed at Carson Hill in 1854.

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It's weight? A massive 195 troy pounds of gold! Unfortunately for posterity, this once-in-a-lifetime find was melted down into gold bullion and coins. Today we can only imagine what this spectacular find looked like, but its recovery underlines the richness of the Carson Hill/Melones District.

District Geology and Mines

The geology of the District includes the following rocks and ore bodies: free-milling, auriferous quartz veins and schists, serpentines (forming bedrock in many parts of the District), and mariposite. Refractory (i.e., chemically bound) ores in the District include calaverite, sylvanite, hessite, and petzite.

The Carson Hill (which produced nearly $27 million in gold), Calaveras, Finnegan, Melones, Morgan, and Reserve Mines, as well as the Stanislaus and Carson Creek placers, were all fantastic gold producers in their day. Other lesser known mines and placers (Santa Ana, Tulloch, Hardy, etc.) in the District were also good gold producers.

Check Things Out First

I've been through the Carson Hill/Melones District a number of times but never tried my hand at mining there. However, I know a few small-scale or recreational miners that have done quite well there in the past. So if you're in the area you may want to poke around a bit.

Bear in mind that there is a strong likelihood that most good areas in the District are either "claimed up" today (due to record-high gold prices) or are on private property. So check things out by talking with the locals before you break out your mining gear.

Good luck to all of you!

P&S Fishing Tackle

If you liked this post, you may want to read: "5 Useful Gold Mining Publication Links"


(c) J.R. 2009

Questions? E-mail me at jr872vt90@yahoo.com

Tuesday, November 3, 2009

5 Useful Gold Mining Publications Links

(Gold panning for young and old at North Carolina's historic Reed Mine.)

Periodically I come across a variety of useful gold mining publications online and the short list I am about to present contains some of that valuable information. I've provided you with a brief description of each publication or article, as well as a clickable URL link:

1. "Gold Panning in New Mexico," New Mexico Bureau of Geology and Mineral Resources

The State of New Mexico has done a fine job with this online gem that is presented in PDF format. Not only does this publication provide you with the basics of gold panning and placer mining, it lists the major placer and lode gold areas of the Land of Enchantment with a brief description of each. Additionally, contact information is provided for a number of state agencies that may prove useful for queries concerning permits, claim information, etc. Check the bibliography at the end of this publication for titles of other pertinent New Mexico gold mining publications.

http://geoinfo.nmt.edu/publications/fieldguides/goldpanning/home.html


2. "Gold in North Carolina," North Carolina Geological Survey

This easy-to-read online brochure contains a wealth of information on gold mining in the State of North Carolina, including where to find additional info; the state's gold history; how to identify gold; lands open to prospecting; permits and regulations; where gold was mined in North Carolina; where to find gold in the state now; mining equipment; and where to sell your gold.


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3. "Gold Publications," Utah Geological Services Natural Resources and Map Bookstore

There are any number of excellent publications listed here on gold and gold mining in Utah. Here are just a few: "Gold Placers in Utah;" "Utah Gold: History, Placers, and Recreational Regulations;" "Gold Prospecting in Utah;" and "Mines and Prospects Containing Gold in Utah," among others. An added bonus here is a short list of mining/prospecting clubs in the state.



"Mining Articles," Alaska Mining.com

This mining website contains all sorts of information, much of it found in the list of write ups located in the site's "Articles" section. Articles of interest to the general gold mining audience include "Alaskan Mining History 101," Making it in Mining," "Prospectors? An Endangered Species?," "How to Patent a Mining Claim," and others. These articles are definitely worth more than a cursory read.

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"Gold," California Geological Survey

If you are a Golden State miner or are planning a mining trip to California, the state Geological Survey has some great information here. There is an entire section on gold prospecting that includes "Hints for Gold Prospectors" and "Placer Gold Recovery Methods." Additionally, this listing of publications and articles includes maps of historic and active gold mines, an account of the original gold discovery at Coloma, historic photographs, and some absolutely stunning photos of California gold and gold specimens. This one is a must if you want to learn more about California gold and gold mining in general.


Gold Pans
Gold Panning Kits

Enjoy your time perusing all of this information and take care out there.

If you liked this post, you may want to read: "State Geological Surveys Links (List 2)"


(c) J.R. 2009

Questions? E-mail me at jr872vt90@yahoo.com