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By Andrew Alden, About.com Guide to Geology since 1997

Platinum nuggets

Sunday December 21, 2003
Just added to the Mineral Gallery is an image of several rare nuggets of platinum. These are a rarity among rarities because they show the metal in its crystal form.

Comments

September 1, 2008 at 10:02 am
(1) walter says:

what is the price of this paticular nugget of platinum, urgent, thanks.

January 30, 2009 at 4:26 pm
(2) kenny says:

I recently found a cache of thirty platinum nuggets,all have been worked(jeweled),these i beleive to have come from the gold rush days of the dawson creeks and streams.Most are in good shape and am planning to sell some.For the most part nuggets from what i observe caome,in a variety of shapes.Some of the ones i have are brecciated,and weigh up to 22 grms.

February 10, 2009 at 6:42 pm
(3) kenny says:

Nuggets apparently go for around u.s $560.00 or so per gram.I have a few i found and are still,in nugget form due to the fact that prior to 1920 or so;no one could come up with the incredible heat(3,150 F)to melt the platinum into ingots and shape them,etc.Most of the ones i have are in original form(except for depictions drawn on them).Most are more or less geological specimens from the 19th century.And studying them it becomes quite apparent.Doing research i have found that pond and co were doing such things int the,latter end of the 19th century situated in dawson yukon NWT.These for tourists and miners alike.Some are very good original specimens,and like most geological specimens hold their own throughout time.Compared to current platinum prices the price for a nugget is higher,this can be attributed to its natural rarity and purity.I beleive this can be attributed to what is called”1000″ fine.This in content and purity.Although platinum comes along with impurities like iron,and other associated minerals.Rather simple,Right?Also platinum comes associated with other minerals like dunite,and garnets.These ofcoarse are attributed to the natural deposits.

February 10, 2009 at 9:15 pm
(4) Geology Guide says:

This sounds realy cool. As I understand it, platinum is naturally alloyed with other platinum-group metals (Rh, Re, Pd, Au?). Platinum loves iron, but iron loves oxygen and probably doesn’t get into platinum very much. Would love to hear more as you proceed.

February 13, 2009 at 6:19 pm
(5) E Logan says:

When panning in the Trinity River of Northern California, a tributary of the Klamath, one often gets small pieces of shiny metal that people say are platinum. I have heard that some of the metal might actually be osmium-iridium alloy. Some writers, like Alt and Hyndman, say the rock of origin of alluvial platinum (PGE) is probably peridotite or serpentinite. I wonder how I might recognize a specific outcropping that is more likely to be enriched in PGE?
Also, I noticed that if I crush local serpentinite, some dark colored material can be separated out with a magnet. I assumed it is just magnetite. That leaves a yellow-green non-magnetic fraction. But I wonder if should I have some of the magnetic material assayed for, say, chromium or PGE?

February 14, 2009 at 2:20 pm
(6) Geology Guide says:

I imagine you wouldn’t see PGE even in the richest zones, so panning would be your best bet, homing in on the source rocks by looking for grains with less wear.

Remember that chromite is also (weakly) magnetic. Maybe there’s a way to separate weakly magnetic from strongly magnetic minerals.

March 27, 2009 at 10:57 pm
(7) gino says:

interested in platinum nuggets please write me for possible offers. my link is at my website goldorecrystals.com

May 14, 2009 at 4:41 pm
(8) Kenny says:

Those nuggets i found probably came from the Kuskokwim R.region

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