Apatite-calcite equilibria in carbonatites: chemistry of apatite from Iron Hill, Colorado

Details Apatite-calcite equilibria in carbonatites: chemistry of apatite from Iron Hill, Colorado Apatite-calcite equilibria in carbonatites: chemistry of apatite from Iron Hill, Colorado

Dec 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972gecoa..36.1313n&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 36, Issue 12, pp.1313-1319

Computer Science

3

Scientific paper

Apatites from a variety of igneous alkaline silicate rocks and carbonatites from the Iron Hill carbonatite complex, Colorado, have been analyzed for major and trace elements. The F content of apatite increases with progressively differentiated host rocks; there is a linear substitution of Si for P. Total REE concentrations range from 0.75 to 1.73 weight per cent. Calculated P fugacities for calcite-apatite equilibrium in carbonatites are similar to those calculated for syenite, and are consistent with a common genetic origin of carbonatite and associated syenite.

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