thats what I thought at first but I thought it was too coarse-grained. You could be right though.
Re: Rocks and Minerals Question Marathon
Posted: December 18th, 2011, 4:01 pm
by tornado guy
quizbowl wrote:
Diorite
ya...
Re: Rocks and Minerals Question Marathon
Posted: December 18th, 2011, 4:04 pm
by quizbowl
C:
Tell me something I don't know about this
Re: Rocks and Minerals Question Marathon
Posted: December 22nd, 2011, 9:49 am
by starfield
[hide]Rhyolite[/hide]
Something you don't know...
Eruptions of this advanced form of Igneous rock are rare, only 3 eruptions of Rhyolite have been recorded since the 20th century, the eruptions were at the ST. Andrew Strait Volcano in Papua New Guinea, Novarupta Volcano in Alaska, USA and Chaiten in Southern Chile
Re: Rocks and Minerals Question Marathon
Posted: December 23rd, 2011, 4:22 pm
by hexagonaria
is this supposed to be easy? Because I've been trying to figure this one out for a while and I can't even figure out what it is.
Re: Rocks and Minerals Question Marathon
Posted: December 23rd, 2011, 5:08 pm
by quizbowl
starfield wrote:
Rhyolite
Something you don't know...
Eruptions of this advanced form of Igneous rock are rare, only 3 eruptions of Rhyolite have been recorded since the 20th century, the eruptions were at the ST. Andrew Strait Volcano in Papua New Guinea, Novarupta Volcano in Alaska, USA and Chaiten in Southern Chile