different between tholeiitic vs tholeiite

English

From tholeiite +? -ic.

tholeiitic (not comparable)

Of or pertaining to tholeiite.
- 2004, Richard Fortey, The Earth, Folio Society 2011, p. 52:
  They are built from a different kind of lava, much gummier than that of the free-flowing tholeiitic basalt.

From German Tholeiit, from Tholei (“a village in western Germany”).

tholeiite (plural tholeiites)

(geology) An igneous basaltic rock, formed from magma rich in magnesium and iron.
- 2004, Richard Fortey, The Earth, Folio Society 2011, p. 51n:
  Correctly speaking, Hawaiian basalt is not just basalt, but is a special variety enriched in silica known as tholeiite.

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