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The top documents tagged [porphyritic intrusive]
British Columbia Geological Survey Activities in 2010
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Active mining projects for Mitsui & Co., Ltd.. Renewable versus Nonrenewable resources… Nonrenewable resource is on that if replenished by natural processes,
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The Geology of Ireland Part Two. Main Tectonic Zones & Granites Galway Granite Leinster Granite Donegal Granite
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Aesthetic 25mm specimen of native Copper with some micro Cuprite crystals
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