Abstract
Relative to other mafic alkaline rocks lamproites are distinguished by their high K2O, TiO2, P2O5, and MgO contents, K2O/Na2O ratios and low Al2O3 and CaO contents. The general characteristics of the lamproite clan have been outlined in Section 2.6. In this section the compositional averages and ranges of lamproites are compared with those of other potassic rocks to demonstrate the major differences in their compositions. Representative compositions of petrographically diverse lamproites from particular provinces can be found in Section 7.1.3.
One should always be a little improbable.
Oscar Wilde
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© 1991 Springer Science+Business Media New York
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Mitchell, R.H., Bergman, S.C. (1991). The Geochemistry of Lamproites. In: Petrology of Lamproites. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3788-5_7
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DOI: https://doi.org/10.1007/978-1-4615-3788-5_7
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-6688-1
Online ISBN: 978-1-4615-3788-5
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