pyroxenes

Here, the magma is classified as Mafic, which has a lower silicone content within the minerals that compose the flow – the resulting rocks tend to be rich in pyroxenes and olivines, and are darker in color.

Thar She Blows « worlds in a grain of sand 2010

Here, the magma is classified as Mafic, which has a lower silicone content within the minerals that compose the flow – the resulting rocks tend to be rich in pyroxenes and olivines, and are darker in color.

2010 April 20 « worlds in a grain of sand 2010

Here, the magma is classified as Mafic, which has a lower silicone content within the minerals that compose the flow – the resulting rocks tend to be rich in pyroxenes and olivines, and are darker in color.

2010 April « worlds in a grain of sand 2010

It is home to glasses, pyroxenes, feldspars, oxides, olivines, troilite and metals in its lunar soil, which is called regolith.

Weekend SkyWatcher's Forecast: March 19-21, 2010 | Universe Today 2010

C peridotite and dunite the upper mantle is composed of ultramafic rock called peridotite which is mostly olivines and pyroxenes.

Earth Robot | SciFi, Fantasy & Horror Collectibles 2009

I was staring a Ca-rich plagioclase and pyroxenes and ilmentite.

Snell-Pym » 2008 » September 2008

I was staring a Ca-rich plagioclase and pyroxenes and ilmentite.

Snell-Pym » The Moon: a Geologist’s Tale 2008

The products resulting from the thermal decomposition of the amphiboles are pyroxenes, magnetite, hematite, and silica.

Geology of asbestos 2007

It has been suggested that the ultrabasic rocks, containing olivine, magnesium-rich pyroxenes, and amphiboles are first altered by hydrothermal processes to form the serpentine minerals; in a later metamorphic event, the serpentines are partially redissolved and crystallized as chrysotile fibers.

Geology of asbestos 2007

Other iron-containing minerals may also be found in chrysotile, for example, pyroaurite, brugnatellite, and pyroxenes.

Geology of asbestos 2007