Re: Rocks & Minerals B/C ID/Question Marathon
Posted: April 12th, 2014, 4:11 pm
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Augite or a less distinct mica schist I think? I suppose if I pick one it's augite
What is Bowen's Reaction Series? What is the continuous branch? What is the discontinuous branch?
sofossils wrote:For the sake of reviving............
What is Bowen's Reaction Series? What is the continuous branch? What is the discontinuous branch?
Bowen's Reaction Series dictates which minerals form from magma at certain temperatures, and thus, what temperature those minerals are most stable at. The continuous branch shows the shift along the spectrum of sodium-rich plagioclase at high temperatures to calcium-rich plagioclase at lower temperatures. The discontinuous branch is made up specific minerals that are present as magma reaches certain temperatures. As magma continues cooling, a mineral reacts with the remaining magma to form the next in the series. The discontinuous branch is made up of olivine (high temps), pyroxene, amphibole, biotite, orthoclase, muscovite, and quartz (lower temps).
[img]http://upload.wikimedia.org/wikipedia/commons/9/97/Azurite-Malachite-59275.jpg[/img]
Azurite and Malachite, they are both carbonates and ores of copper
sofossils wrote:Azurite and Malachite, they are both carbonates and ores of copper
When azurite weathers, it is replaced by malachite. (pseudomorph)taylorivy wrote:[img]http://upload.wikimedia.org/wikipedia/commons/9/97/Azurite-Malachite-59275.jpg[/img]