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#1

Shaza1
Member
Joined: 28 October 2017
Posts: 27
Member
19 January 2018 11:41 pm

Hi there, found this little stone in an old walking track we are restoring in mt lofty sa. It sat there gleaming at me. Are they flecks of gold or is it just fooling me ? lol 1516365664_b1d1c07d-203f-4917-aaba-59762f37e1aa.jpg
1516365665_7f4356a0-cf81-4642-b549-089f8d23cf43.jpg
1516365666_f09ec608-4992-4d48-8fd8-953828ce8ef7.jpg

1 user likes this post: silver

#2

hAyyoUinAU
Member
From: Brisbane, QLD
Joined: 30 July 2017
Posts: 1,041
Member
20 January 2018 12:00 am

looks like pyrite, but that is just from pic and box work style.

A dolly and a pan can help you figure it out.

Last edited by hAyyoUinAU (20 January 2018 12:01 am)


GPZ 7000 + Equinox 800

1 user likes this post: Shaza1

#3

hAyyoUinAU
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From: Brisbane, QLD
Joined: 30 July 2017
Posts: 1,041
Member
20 January 2018 12:02 am

Oh, an where there are pyrites, there IS usually gold, so worth a look either way.


GPZ 7000 + Equinox 800

1 user likes this post: Shaza1

#4

Heatho
Moderator
From: Sydney, NSW
Joined: 29 April 2013
Posts: 11,679
Moderator
20 January 2018 09:06 am

As hAyyoUinAU said, gold can be locked up in sulphides in pyrite (iron sulphide) or be close buy as free gold. Looks like pyrite to me too, if you can scratch a bit out with a screwdriver or something then pyrite will usually crumble where as gold will not crumble, gold is very malleable.


Minelab GPX 5000, SDC2300, CTX3030, Equinox 800, patience, lot's of patience.

3 users like this post: hAyyoUinAU, Shaza1, aussiefarmer

#5

Shaza1
Member
Joined: 28 October 2017
Posts: 27
Member
20 January 2018 04:53 pm

Hi heatho smile I tried scratching it out won’t budge so I’ll give it a go smashing it out, because I’m curious more than anything lol1516427558_d5277ef4-ab7b-4279-98cb-da3056f95154.jpg

1 user likes this post: Heatho

#6

aussiefarmer
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Joined: 26 July 2015
Posts: 2,367
Member
20 January 2018 04:59 pm

That pic looks more like gold than the others , you probably already know gold is soft and pyrites are hard and brittle , so a pointy punch or screw driver would kinda dig into gold or at least dent it and pyrite should chip and shatter.


Wish in one hand and poo in the other , See which one fills up first !

1 user likes this post: Heatho

#7

BigWave
Member
From: Melbourne
Joined: 19 January 2016
Posts: 2,436
Member
20 January 2018 06:00 pm

Try a multimeter on it. Gold will have almost no resistance (<1ohm) no matter where you prope it. Pyrite will have a much higher resistance (>100ohm) and will vary greatly depending on where you probe it.


GPX-4500 & Direction Finding Daughter

2 users like this post: Phoenix76, Heatho

#8

SWright
Member
From: Wodonga, VIC
Joined: 15 October 2013
Posts: 224
Member
21 January 2018 12:43 pm

G'Day

Hard to tell from the photos but it is not gold. A triangular crossection on one bit so could well be arsenopyrite. Hit it and if it has a strong almond like smell straight after it is hit then it is arsenopyrite.

Araluen

1 user likes this post: grubstake

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