Dacite Photos
Cochise College
Photos of Rocks Igneous Rocks
Virtual Geology Museum Hall of Rocks
Geology Home Page
Roger Weller, geology instructor
Dacite Photos
wellerr@cochise.edu
copyright 2007
mica dacite porphyry-1
Sunshine County, Colorado
Photo is copyright free for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise
College.
Specimen from Cochise College
collection
rock027