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Petrology of Lamproites (Hardcover, 1991 ed.)
Loot Price: R4,688
Discovery Miles 46 880
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Petrology of Lamproites (Hardcover, 1991 ed.)
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In this book, the first dedicated entirely to the petrology of
lamproites and their relationships to other potassium-rich rocks,
the objective of the authors is to provide a comprehensive critical
review of the occurrence, mineralogy, geochemistry, and
petrogenesis of the clan. Although lamproites represent one of the
rarest of all rock types, they are both economically and
scientifically important and we believe the time is ripe for a
review of the advances made in their petrology over the past two
decades. Many of these advances stem from the recognition of
diamond-bearing lamproites in Western Australia and the
reclassification of several anomalous diamond-bearing kim berlites
as lamproites. Consequently lamproites, previously of interest only
to a small number of mineralogists specializing in exotica outside
the mainstream of igneous petrol ogy, have become prime targets for
diamond exploration on a worldwide basis. Contemporaneously with
these developments, petrologists realized that lamproites possess
isotopic signatures complementary to those of midoceanic ridge
basalts, alkali basalts, kimberlites, and other mantle-derived
melts. These isotopic studies provided new insights into the
long-term development of the mantle by suggesting that the source
regions of lamproites were metasomatically enriched in light rare
earth and other incompatible elements up to 1-2 Ga prior to the
melting events leading to generation of the magma.
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