Another beautiful mystery rock from Copper Country

[Beaglejuice13]

Cinnabar?

Part of a lifetime collection of rocks and minerals from the U.P. of Michigan.

 

[A2coins]

Wow those are really nice I need to get up there someday I love stuff like that. Very nice. Thanks for sharing them. Tommy

 

[IAMZIM]

It looks like potassium feldspar to me.....not sure on that though. The "red" could be iron staining or limonite(spelling) I dont think it's cinnibar.

 

[Clay Diggins]

Looks like Calcite (white), Hematite or possibly Goethite (black) and Hematite or Goethite converting to Limonite (reddish).

The white could be feldspar (hardness ~6) instead of calcite (hardness 3), a simple hardness test will distinguish the two.

Limonite is not a true mineral it's a mineraloid. It can be various colors of red/orange/brown and is almost always found in direct association with iron minerals like Magnetite, Hematite and Goethite.