What kind of mineral is this ?

[Salvatore]

Having hard time figuring what kind of mineral is this or is this a combination of minerals combined.

 

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[DDancer]

Looks almost like an agate. Be nice to see a slab of it.

 

[Eu_citzen]

My gut is telling me a metasediment. (quartzite-ish?) Better pictures would help.

 

[hvacker]

I'm glad it's not your finger.

 

[DDancer]

Ouch! Hehh it does look like something I'd rather not contemplate HV

 

[Geochem]

Having hard time figuring what kind of mineral is this or is this a combination of minerals combined.

From my viewpoint, it appears to be reddish quartzite.