Kimberlites, Orangeites, and Related Rocks

1. Kimberlites and Orangeites.- 1.1. Etymology of Group I and II Kimberlites.- 1.2. Definitions of Cryptogenic and Primary Phases.- 1.3. The Hybrid Nature of Kimberlites and Orangeites.- 1.4. Philosophy and Principles of Classification.- 1.4.1. Modal versus Genetic Classifications.- 1.4.2. Petrological Clans.- 1.4.3. The Lamprophyre Clan.- 1.4.4. Mineralogical-Genetic Nomenclature within Petrological Clans.- 1.5. Mineralogical Comparisons between Kimberlites and Orangeites.- 1.6. Definitions of Orangeites and Kimberlites.- 1.6.1. Orangeites.- 1.6.2. Kimberlites.- 1.7. Age and Distribution of Orangeites.- 1.8. Occurrences of Orangeites.- 1.8.1. Finsch.- 1.8.2. Barkly West Region.- 1.8.2.1. Bellsbank.- 1.8.2.2. Sover.- 1.8.2.3. Newlands.- 1.8.2.4. Pniel.- 1.8.3. Boshof District.- 1.8.3.1. Roberts Victor.- 1.8.3.2. New Elands.- 1.8.4. Winburg District.- 1.8.5. Kroonstad District.- 1.8.6. Swartruggens District.- 1.8.7. Dokolwayo.- 1.8.8. Prieska District.- 1.8.9. Summary.- 1.9. Textural-Genetic Classifications of Petrological Clans....- 1.9.1. Kimberlites.- 1.9.1.1. Crater Facies.- 1.9.1.2. Diatreme Facies.- 1.9.1.3. Hypabyssal Facies.- 1.9.1.4. Spatial Relationships between Diatreme and Hypabyssal Facies Kimberlites.- 1.9.2. Orangeites.- 1.9.3. Melilitite Clan.- 1.10. Petrographic Characteristics of Orangeite.- 1.11. Petrographic Differences with Respect to Kimberlites.- 1.12. Petrographic Differences with Respect to Lamproites.- 2. Mineralogy of Orangeites.- 2.1. Mica.- 2.1.1. Paragenesis.- 2.1.2. Composition of Primary Mica.- 2.1.2.1. Al2O3-TiO2 Variation.- 2.1.2.2. Al2O3-FeOT Variation.- 2.1.2.3. Macrocrysts versus Microphenocrysts.- 2.1.2.4. Minor Elements.- 2.1.2.5. Trace Elements.- 2.1.3. Aluminous Mica-Microxenoliths.- 2.1.4. Aluminous Biotite Macrocrysts.- 2.1.5. Micas from the Swartruggens Male Lamprophyre.- 2.1.6. Summary of Mica Compositional Variation.- 2.1.7. Solid Solutions in Orangeite Mica.- 2.1.8. Mica in Kimberlites.- 2.1.8.1. Macrocrysts.- 2.1.8.2. Primary Micas.- 2.1.8.3. Summary of Kimberlite Mica Compositional Variation.- 2.1.9. Mica in Lamproites.- 2.1.10. Mica in Minettes.- 2.1.11. Mica in Ultramafic Lamprophyres.- 2.2. Clinopyroxene.- 2.2.1. Paragenesis.- 2.2.2. Composition.- 2.2.2.1. Diopside.- 2.2.2.2. Titanian Aegirine.- 2.2.2.3. Minor Elements.- 2.2.3. Pyroxenes in the Swartruggens Male Lamprophyre..- 2.2.4. Megacrystal Pyroxenes.- 2.2.5. Comparison with Pyroxenes in Kimberlites.- 2.2.6. Comparisons with Pyroxenes in Lamproites.- 2.2.7. Comparisons with Pyroxenes in Ultramafic Lamprophyres.- 2.2.8. Comparisons with Pyroxenes from Minettes.- 2.3. Olivine.- 2.3.1. Paragenesis.- 2.3.2. Composition.- 2.3.3. Comparisons with Olivines in Kimberlites.- 2.3.4. Comparisons with Olivines in Lamproites.- 2.4. Spinel.- 2.4.1. Paragenesis.- 2.4.2. Composition.- 2.4.3. Comparisons with Kimberlite Spinels.- 2.4.4. Spinel Compositional Variation in Lamproites and Lamprophyres.- 2.5. Potassium Barium Titanates.- 2.5.1. Hollandite.- 2.5.1.1. Paragenesis.- 2.5.1.2. Composition.- 2.5.1.3. Comparison with Hollandites from Lamproites, Kimberlites, and Other Potassic Rocks.- 2.5.2. Potassium Triskaidecatitanate.- 2.5.3. Barium Pentatitanate.- 2.6. Perovskite.- 2.6.1. Paragenesis.- 2.6.2. Composition.- 2.6.3. Comparison with Perovskites from Kimberlite.- 2.6.4. Comparison with Lamproite Perovskite.- 2.7. Phosphates.- 2.7.1. Apatite.- 2.7.1.1. Paragenesis.- 2.7.1.2. Composition.- 2.7.1.3. Comparison with Kimberlite and Lamproite Apatite.- 2.7.2. Daqingshanite.- 2.7.3. Monazite.- 2.7.4. Sr-REE Phosphate.- 2.8. Amphiboles-Potassium Richterite.- 2.8.1. Paragenesis.- 2.8.2. Composition.- 2.8.3. Comparison with Potassium Richterite in Lamproite and Other Potassic Rocks.- 2.9. Potassium Feldspar.- 2.10. Ilmenite.- 2.10.1. Comparison with Groundmass Ilmenites from Kimberlites.- 2.10.2. Comparison with Ilmenites in Lamproites.- 2.11. Rutile.- 2.12. Zirconium Silicates.- 2.12.1. Zircon.- 2.12.2. Wadeite.- 2.12.3. Zirconium-Bearing Gar