1) If a rock has a
fine-grained texture, what does it mean? Does it mean that it has
small crystals? And
coarse-grained texture means
large crystals? The word "texture" used here...is it related how the surface of the rock looks like, how you feel when you touch the rock?
2) Is the term "phaneritic texture" the same as "coarse-grained texture", i.e. big crystals??
If so, then why in the following rock description, the rock syenite (#3) is under the category "phaneritic texture", but in its description, it is described as "fine-grained"? Then why would it be under the "phaneritic texture" category?
Please click the following link to see the chart:
http://www.geocities.com/asdfasdf23135/DSC00601.JPG
Can anyone help? Thank you!
