how many kind of rocks we hv on the earth?

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The field guide for Rocks and Mineral of North America is a very good resource that may help you with this topic!

2007-03-04 23:22:37 · answer #1 · answered by Anonymous · 0⤊ 0⤋

919,123,294,938,394,845,094, 345, Metric Tons* of Rocks

2007-03-05 00:49:58 · answer #2 · answered by GoAndComeback 1 · 0⤊ 0⤋

Too many. Read a book on mineralogy

2007-03-05 00:55:02 · answer #3 · answered by mfi 2 · 0⤊ 0⤋