Beach find rock!:ukflag:

[JAN1]

Can anyone help.
I was out detecting and found this rock glinting in the sun and I thought that was what was giving the tone but when I tested it there was no tone.
I assume it is fools gold but the rock is very heavy for it's size but does not give a tone on the probe.
Any ideas as to what the rock is please.

 

[abnackimac]

Definitely pyrite in what looks to be hematite matrix. That would explain its weight.

 

[KinTN]

As best as can be id's with just pics, I agree with abnackimac . If you are hoping against hope that it is gold (and who wouldn't!), a knife blade will easily scratch gold, but will not scratch pyrite (chipping doesn't count as scratching).

 

[JAN1]

As it didn't react to the detector probe I knew it wasn't Gold.

 

[KinTN]

Trust, but Verify!

 

[Johnho]

If that darker material has a bluish tint to it or blackish it could be covellite or calcocite. However, my detector (AT Gold) easily sounds off on those minerals.

 

[JAN1]

Sooy I should have added that it was not magnetic.

 

[sepoinak]

Pyrite is often not magnetic until heated....

 

[giuhalftrack]

the grey material looks like a lead sulphur, "Galena" they are commonly find associated