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Dr. Arifudin Idrus Laboratorium Bahan Galian Jurusan Teknik Geologi, Fakultas Teknik Universitas Gadjah Mada Yogyakar

Definisi/batasan. Porfiri (tembaga) adalah endapan mineral mengandung sebaran tembaga, yang terdapat pada batuan beku plutonik (monzonit kuarsa, granodiorit dan tonalit).Endapan epitermal terbentuk pada kedalaman dangkal (~1 km) dan dalam kisaran suhu 50 ? 250?C.?epithermal" (lebih dangkal/dingin)

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Dr. Arifudin Idrus Laboratorium Bahan Galian Jurusan Teknik Geologi, Fakultas Teknik Universitas Gadjah Mada Yogyakar

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