Textbook
Kimberlites and diamonds
Although diamonds can occur in aTluvial gravels and beach sands, their only primary source is kimberlite. Approximately 88 per• cent of the world's diamond production comes from the primary source, so it is important to understand the tectonic controls of kimberlite emplacement. Any tectonic model proposed has to take cognisance of the empirical observation that diamondiferous kimberlites are confined to stable cratons that have not undergone orogenesis in the past 1500 Ma.
However, diamond is only an accessory.._mineral in kimberlites, occurring, if at all, in concentrations less than one part in a million, thus it is useful to have independent pressure (P) and temperature (T) estimates of depth of genera~ion of kimberlites. By determining the site of generation of the kimberlite, it can be established if forma• tion took place in the diamond stability field, rather than at lower pressures, thereby endorsing the prospective nature of a kimberlitic province. Independent estimates of the site of generation of the kim• berlites can be ascertained by:
a) comparing, with laboratory calibrations, P-T estimates derived from equilibrium mineral assemblages in mantle nodules (xeno• liths) present in kimberlites;
b) comparing the composition of the magma with experimentally•
determined melting compositions on peridotitic rocks.
However, diamond is only an accessory.._mineral in kimberlites, occurring, if at all, in concentrations less than one part in a million, thus it is useful to have independent pressure (P) and temperature (T) estimates of depth of genera~ion of kimberlites. By determining the site of generation of the kimberlite, it can be established if forma• tion took place in the diamond stability field, rather than at lower pressures, thereby endorsing the prospective nature of a kimberlitic province. Independent estimates of the site of generation of the kim• berlites can be ascertained by:
a) comparing, with laboratory calibrations, P-T estimates derived from equilibrium mineral assemblages in mantle nodules (xeno• liths) present in kimberlites;
b) comparing the composition of the magma with experimentally•
determined melting compositions on peridotitic rocks.
Ketersediaan
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Pusat Sumber Daya Mineral, Batubara dan Panas Bumi - Jln. Soekarno Hatta No. 444, Bandung, Jawa Barat
PMB 622.382 VER k
PMB 622.382 VER k
Tersedia
Informasi Detail
- Judul Seri
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- No. Panggil
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PMB 622.382 VER k
- Penerbit
- Australia : The University of Western Australia., 1980
- Deskripsi Fisik
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i, 130 p. : ill. ; 21 cm
- Bahasa
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English
- ISBN/ISSN
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0 909704 29 5/0156-9
- Klasifikasi
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622.382 VER k
- Tipe Isi
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- Tipe Media
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- Tipe Pembawa
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- Edisi
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- Subjek
- Info Detail Spesifik
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- Pernyataan Tanggungjawab
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J.E Glover dan D.I Groves
Versi lain/terkait
Tidak tersedia versi lain
Lampiran Berkas
Tidak Ada Data
Karya Umum 
Filsafat 
Agama 
Ilmu-ilmu Sosial 
Bahasa 
Ilmu-ilmu Murni 
Ilmu-ilmu Terapan 
Kesenian, Hiburan, dan Olahraga 
Kesusastraan 
Geografi dan Sejarah