How much gold is in this 20 gram bag of gold leaf?

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Don't be fooled, not all gold is created equal. Some gold leaf is pure gold, others, not so much. A fan bought a 20 gram bag of gold leaf scraps off ebay for very inexpensive price. He sent it to me to test how much gold was actually in it. The results are shocking but not unexpected.
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This video is produced by Dan Hurd, Prospector, Miner, Teacher and RU-vidr, as part of his RU-vid channel based on educational videos about gold mining, gold panning, prospecting, rock hounding, and mineral collecting.
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Опубликовано:

4 мар 2023

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Комментарии : 483

@idigdaytona4478 Год назад

I was in a pawn shop and a guy came in with a bunch of that "gold leaf " and wanted to sell it . They did an acid test. The guy doing the test started laughing . He said it was like a magic act. As soon as the acid touched it , it disappeared. Good stuff Dan.

@mm-qd1ho Год назад

Just for a fun comparison, the James Webb telescope mirror gold layer is 100 nanometers (600 gold atoms) thick. With a total diameter of 6.5 m (21 ft), the total gold content is only 48 grams.

@johnnyseven5058 Год назад

Hi Dan, those foils are actually made off brass. Brass looks very goldish till it is fresh and not oxidized yet. It is used for making cheap "gold" pigments or colours as substitute of real gold. That is why you ended up with pure copper from smelting process. That little bead of gold is most likely left from the previous smeltings on the walls of crucible.

@calogero_t Год назад

I've used gold leaf for years restoring antique picture frames. There is both real 24k gold leaf as well as imitation leaf. They both come in "books" of super thin sheets between papers. Imitation gold leaf is usually aluminum or brass. I suspect you have imitation leaf as I noticed a dark mark on your fingers when handling it. Real gold leaf does not leaf a mark on your skin when rubbed together. Also real 24k gold leaf is pricy. Around $75 for a book of 20 small sheets, which generally contains less than half a gram of gold total.

@diamondhunterTv5 Год назад

Gold leaf is a very thin sheet of gold that is commonly used for decoration, gilding, and other applications. The weight of gold leaf is typically measured in troy ounces or grams.

@trevorwhat Год назад

That was a particularly good walkthrough, Dan. Thanks for putting it together.

@forg0tten Год назад

I love my Sunday morning episodes of prospecting with Dan.

@Landogarner83 Год назад

As a bit of additional info on the topic:

@draagynshit2729 Год назад

Nice seeing you and your dad having fun.

@MrGoesBoom Год назад

Not gonna lie, the smart ass in me, as soon as I saw the title was thinking "Well there might be 20 grams of gold in that 20 gram bag of gold...but I could be wrong"

@fredwright3070 Год назад

Always nice to see your dad hanging out with you!

@helenak.5762 Год назад

Thank you, Dan, for another educational video. I love these experiments you do ❣️

@uncleal Год назад

"Copper plus 4 - 15 % aluminum gives corrosion-resistant and strong aluminum bronze with a pale gold color. Powdered it's used as a metallic, gold-color pigment in oil-based paints and inks."

@georgeconnon7272 Год назад

Thank you, Dan and Doug for your knowledge!

@angesvlogs6628 Год назад

Imitation gold leaf, also called composition gold leaf, Dutch metal, or Dutch gold, while made to imitate the appearance of gold, is made from a combination of copper, zinc, and brass.

@rtmsound1877 Год назад

There is an alloy called Nordic Gold that is copper, tin, zinc, and aluminum. It is used in European coins that look gold.

@robrob5081 Год назад

Depending on the brand of the gold leaf most of the cheaper ones are mostly copper zinc and brass mix.

@Emu0181 Год назад

Having gilded quite a few picture frames and sculptures for stage productions, most cheap leafing material is some brass alloy, although real gold leaf is available in various purities (24k for edible like for cakes and stuff).