Just need to make sure since it's been one of those weeks for me where I've been wrong about everything I thought and I can't afford to mess this up. Thanks.
2007-11-12 11:00:56 · 4 answers · asked by somebody 4 in Science & Mathematics ➔ Earth Sciences & Geology
Kenny- Snowflake obsidian, for one, is coarse grained. I just need to be sure that terrestrial volcanic glass is mainly coarse grained.
2007-11-12 11:15:18 · update #1
Wrong. By definition if it is glass it does not have grains at all. Of course in the real world natural glass is usually "contaminated" with a few crystals. But what make a flow glass is that it solidifies before crystals start to grow.
2007-11-12 12:47:08 · answer #1 · answered by dougger 7 · 2⤊ 0⤋
Obsidian is very very fine grained, like glass.
2007-11-12 20:03:50 · answer #2 · answered by Howard H 7 · 1⤊ 0⤋
i dont think so.. umm coarse means rough right. i dotn think glass and rough mix togother....... ya and like i said GLASS!!!
2007-11-12 19:03:52 · answer #3 · answered by Kenny 3 · 0⤊ 0⤋
No, its glassy.
2007-11-12 19:37:16 · answer #4 · answered by aksgeh 2 · 1⤊ 0⤋