Some help needed

[Ivo]

Hi all went for a swing up the farm and came across this with the gp extreme, it was out in the scrub in between granite bolders it's not magnetic and doesn't rust its heavy and hard i tried the bleach test for silver but does not turn black i filed a little and is shiny i ran the eurotek pro over it and it rang up 78 and lead reads 56 so it's not lead and tin is mid to high 90's so it's not tin throwing it out there any thoughts

 

[treasureman]

very interesting mate. not too sure but doesnt look like lead. i found something similar a while ago and also rings up 78. could be lunar meteorite? but im only guessing and have no real proof of that. perhaps slice her open and see what it looks like inside?

 

[TheSilentBugler]

Looks like slag to me.

 

[Ivo]

ok i hit it with the wire wheel on the bench grinder and come up shiny tried the bleach test and still didn't turn black and had not rusted yet still has me stumped

 

[Tathradj]

Wire Wheel. ???
I hope that it is not a meteorite.

 

[nicko61]

would i be right in thinking a meteorite would be smooth from entry into our atmospere

 

[treasureman]

cant be iron as it would give you an iron reading. not silver. and not lead. im curious

 

[AtomRat]

Does it turn black if you put a dot of hydrochloric acid on it? And was there a thin stuck black "shell" around some of it?

 

[Ivo]

Does it turn black if you put a dot of hydrochloric acid on it? And was there a thin stuck black "shell" around some of it?

No shell around it and I'll try the hydro acid and get back to ya cheers

 

[Ivo]

Does it turn black if you put a dot of hydrochloric acid on it? And was there a thin stuck black "shell" around some of it?

Hi atomrat i tried the acid test and it does go dark, what are your thoughts on it cheers ivo

 

[Ivo]

OK update on the unidentified nugget thingie lol it has turned a bronzie color ? ? ? sorry no pics camera is stuffed .

 

[AtomRat]

Sorry for the late reply mate, it slipped through the threads. Just thinking of some ways in what would make it react. I think..and think..if it reacts with h20, it contains a sodium metal / atom and that hydrochloric acid makes it oxodize. I'd then probably try a drop of sulfuric acid and see what reaction occurs to null out other options but its really something that's getting a bit technical, and I too am having some issues figuring it out.

Here's standard ways to test for unidentifyable rock / minerals:

Scratch / Hardness test
Specific Gravity test
Streak test
Acid Test
Lustre
Color
Cleavage

Specific gravity and hardness tests will be a great start