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Name: Jackie
Status: Educator
Age: 50s
Location: N/A
Country: N/A
Date: N/A
Question:
Would you tell me, or give me an internet site that would tell me if these "rocks" are igneous, sedimentary, or Metamorphic:
pyrite
zinc (sphalerite)
galena
magnitite
mica


Replies:
All of the listed "rocks" are actually minerals, not rocks.

Pyrite is an iron sulfide
Sphalerite is a zinc sulfide
Galena is a lead sulfide
Magnetite is an iron oxide
Mica is a common rock forming mineral found in many different rocks

Steve Miller


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