Can anyone help me identify these rocks? All were found in Greenland. They are all less than 5cm. I thought the red might be very tiny rubys! The white rock was from a fragment found as shown in the large picture - it almost resembled a fossil, but I have not been able to identify it. I hope someone can help.
The red-brown mineral superficially resembles garnet, but I think I can see sufficient cleavage to suggest augite, perhaps
The translucent white mineral is almost certainly quartz.
Could be garnet or, if associated with the preceding piece/area, perhaps augite.
Can't see enough detail to say more, really.
DSCF2205.jpg and 2013-08-02 15.21.08.jpg
There are a few minerals that can display such an acicular-radiating habit. It is next to impossible to say which one yours is without scrutiny under a petrological microscope. (It is definitely not fossil.)
Actinolite is just one possbility; here's an example of it