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View Full Version : Best Assays Au oz/ton... list em here

09-27-2012, 02:59 PM
Ok lets make a list of the top highest assays of oz/ton of gold by Alaskan District, and a list of world high assays of gold per tonne


09-27-2012, 03:44 PM

Per "Short ton", "Long ton" or "Metric Tonne"?

Grade of placer gold is generally given in troy ounces per cubic yard. Is placer gold included? If so, how should we convert?

The trend is toward tonnes in NI 43-101 reporting. Does this include all of the core assays done in Alaska and the rest of the World?

- Geowizard

09-27-2012, 04:14 PM

For lode gold not placer. Regarding reporting just state how it was graded (depends where it was assayed). But for simplicity, ounce per short ton (2000lbs).

But what the heck we might as well list some cool dirt too in gold per cubic yard.

And it would be fun to read current and historical stuff.


Steve Herschbach
09-27-2012, 05:24 PM
From Placer Deposits of Alaska by Edward H. Cobb:

"Some of the stream placers were extremely rich, in part because of reconcentration of material from bench placers, which greatly increased the available supply of gold and other heavy minerals. For example, Snow Gulch, a small left-limit tributary of Glacier Creek, is only about three-quarters of a mile long, but gold worth more than a million dollars was taken from it in only a few years. Stream and low-bench deposits that were worked during the first 10 years of mining on Anvil Creek probably averaged at least $5 to $6 (gold at $20.67 per ounce) a cubic yard and locally were ten times as rich. Near the head of Nekula Gulch, a left-limit extreme headwater gulch of Anvil Creek, a hole nearly 90 feet deep (probably a sink or collapsed cavern) in limestone on the Caribou Bill claim was filled with gravel containing coarse angular gold that did not appear to have been carried far but may have been partially reconcentrated from nearby "high-bench" gravels. This material was fabulously rich; its gold content was probably worth about $1,000 per cubic yard (gold at $20.67 per ounce)."

At $1700 per ounce you are talking material worth $82,000.00 per cubic yard!

10-05-2012, 07:45 AM
I`am sending ours off today. Cant wait to get results back.

Steve Herschbach
10-05-2012, 11:18 AM
From http://www.dggs.alaska.gov/webpubs/dggs/nl/text/nl1960_009.PDF

"Alaska State Mines completed 350 feet of tunnels through the ice of Texas Creek Glacier near Hyder, Alaska this summer. Object of the work was to find a deposit of electrum under the glacier. Electrum was discovered in 1925 as float at the foot of the glacier - and the lode in place mined on a small scale in 1937. Specimens from the deposit contain up to 3460 ounces of gold per ton."

Just shows how assaying hand picked specimens results in meaningless numbers. Over $5 million dollars a ton would be pretty good ore, don't you think?

10-05-2012, 09:10 PM
Are there any photos out there?