Comment 75198

By GerryM (registered) | Posted March 13, 2012 at 12:00:20

Yes, my wife agrees with you that igneous or metamorphic rocks make the best decorative rocks. It is a tribute to her other qualities that our marriage has lasted more than 50 years. Another geologist (who did work with "hard rocks") was instructed by his wife (a keen gardener) to bring back attractive "gardenite" from his excursions into the Canadian Shield.

Just remember that 75% of the continents, and almost all of the ocean bottoms are covered by sedimentary rocks. Sediments supply most of the energy we now use (petroleum, coal). Some sedimentary rocks make good building stones just because they lack easily weathered minerals. Others (gypsum, phosphates) make good fertilizers.

Comment edited by GerryM on 2012-03-13 12:04:09

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