Meta. Home | Alpha. | Simp.Class. | Intro. | Glos. | Kinds | Classify | Texture | Keys | Barrovian | Tect. | Self Tests
HORNFELS #1   (detail)
Hornfels     -   Other specific examples: #1 | #2 | #3 | #4
Return to whole image

Next specimen

Return to:
Alphabetical Listing
Basic Key
Advanced Key
     Hornfels can have any of a wide diversity of microscopic minerals, all too small to see or identify without thinsection and a specialized microscope.
     The pale green pyroxene and red garnet are diagnostic of this rock.
     Nothing much has changed in this closeup. It is still a dark gray, dull, dense rock - except that we can see some larger mineral grains (porphoroblasts - large crystals in a rock produced by metamorphism which superficially resembles a porphyritic phenocryst in an igneous rock)

LSF Home | Geology Web Sites | Courses | Geology Home
Last Update: 10/25/00

e-mail: (