Another rock that needs to be identified

[Golderix]

Hello!

I found a rock on a beach the other day. It was lying at a depth of about 10-30 cm and it is said that the area I found the rock on was used for sand and gravel mining in the past.

I will post three pictures and hope you can help me.

Thanks in advance!

 

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[DDancer]

Looks like that might be a chunk of galena. You can do a scratch test and see if it comes out gray.

 

[Golderix]

I did scratch it and small silver pieces came of and the rock is still silvery. I used a magnet and the pieces got stuck on the magnet.

 

[Eu_citzen]

Could be magnetite if it sticks to a magnet.

 

[DDancer]

Arsenopyrite then