Return to Whole Image
Another Specimen
Return to Classification; pdf version
| Ig. Home | Simp.Class. | Advanc.Class. | Alpha.List | Bowen's Reac.Srs. | ID Keys | Extrus/Intrus | Tect. | Self Tests |
| GRANODIORITE (detail)
|
Return to Whole Image Another Specimen Return to Classification; pdf version
|
Typical Minerals Na/Ca PLAGIOCLASE - ~ 50%QUARTZ - > 20% Amphibole/Biotite - 10-25% |
Detail Description
In this detail we see a mix of clear, glassy, grayish quartz, white, translucent sodium plagioclase, and amphibole. It is difficult in the picture to separate the quartz from sodium plagioclase, but the quartz mostly fills the tight little spaces among the feldspar and amphibole crystals.
|
 Return to Whole Image Return to Classification; pdf version |
| Last Update: 9/29/00 | e-mail: (Fichtels@jmu.edu) |