Specimens

[sierra_ronin]

As I said in my forum post from Monday "My First Quartz Gold Specimen" I would be posting photos of my specimens over the next few weeks. Here I have some images of the second specimen I found in the heart of the mother lode near a historically productive area.

 

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[arizau]

Beautiful! Was it a visual find? More good luck in the future.

 

[sierra_ronin]

Beautiful! Was it a visual find? More good luck in the future.

Yes Arizau, it was a visual find and thank you.

 

[goldenIrishman]

Very nice!

 

[goldenmojo]

Beautiful specimen. Have you been able to determine how much gold it contains?

 

[RustyGold]

Wow! Just beautiful! Thank you for the pics!

 

[sierra_ronin]

Beautiful specimen. Have you been able to determine how much gold it contains?

Goldenmojo,

I have not...need to get a scale with a larger maximum weight limit as well as a large beaker or graduated cylinder.

 

[winners58]

thats nice...
after you get a lager scale heres some calculations
Specific Gravity Test : Gold Nuggets For Sale - Buy Gold Nuggets - Australian Gold Nugget

 

[sierra_ronin]

thats nice...
after you get a lager scale heres some calculations
Specific Gravity Test : Gold Nuggets For Sale - Buy Gold Nuggets - Australian Gold Nugget

Thanks I like the method used here.

 

[goldenmojo]

That size rock and the amount of gold showing on the exterior it could have a considerable number of ounces inside. I await the measurement. Very nice find.

 

[PaDirtDigger]

That is sooooo cool!
And you found it yourself! Id love to have something like that in my specimen cabinet!
Awesomeawesomeawesomeawesome!!!!!!!

 

[Bodfish Mike]

Good eye and thanks for the proof

 

[Rob in KS]

thats nice...
after you get a lager scale heres some calculations
Specific Gravity Test : Gold Nuggets For Sale - Buy Gold Nuggets - Australian Gold Nugget

Couldn't you also get the Specific Gravity by measuring the volume of the sample and weighing it? Rather than weighing it under water. Then jump into the middle of his formula. Maybe I'm all wet (LOL)

Specimen dry weight: 35.8 Grams
Specimen wet weight: 27.9 Grams
35.8 minus 27.9 equals 7.9 Difference (D)
35.8 divided by 7.9 equals 4.53, the specific gravity of the specimen (SG) <== isn't this the density?
4.53 minus 2.63, the average specific gravity of quartz, equals 1.9 (R)
1.9 (R) multiplied by 7.9 (D) equals 15.01 (R2)
15.01 divided by the constant 25.97 equals 0.577 ounces of contained gold
0.577 ounces multiplied by 31.103 (the number of grams in a troy ounce) equals
17.94 grams of contained gold in the specimen.

 

[winners58]

one method "how much water is displaced" (to measure volume)
the other method compares wet and dry weight

specific gravity" & "density" are interchangable

list of common density (about half way down)
Desert Gold Diggers - Gold Facts
and you can also search here then find Density; Mineralogy Database - Mineral Collecting, Localities, Mineral Photos and Data
more specific gravity tests and calculators
Desert Gold Diggers - Specific Gravity Test

 

[Bodfish Mike]

One more specific gravity test
sgtest

 

[Oakview2]

If the gold is showing on both sides, you can attach the leads of a voltmeter, if it registers, you know the gold goes all the way thru. Nice piece, you need to get a coil over that spot....

 

[KevinInColorado]

Pretty epic. Well done!

 

[TAKODA]

 

[Oakview2]

Buttery good

 

[Hoser John]

RIGHTEOUS species for sure. Silence is indeed golden so tell NO ONE where-John