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Picritic-rock

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Fine grained ultramafic or basaltic rocks with <53% SiO2, (Na2O+K2O)<2%, MgO>18%.


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Classification of Picritic-rockHide

Sub-divisions of Picritic-rockHide

Mineralogy of Picritic-rockHide

Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
OlivineEquivalent to Fayalite-Forsterite Series; usually a more or less Fe-bearing forsterite.
PyroxeneA petrological term for Pyroxene Group.

Internet Links for Picritic-rockHide

Mineral and/or Locality  
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