Table 2 Mineral compositions and contents of the selected dolostones in the Middle Permian Lucaogou Formation in Jimusar Sag, eastern Junggar Basin
From: Hydrothermal-sedimentary dolomite — a case from the Middle Permian in eastern Junggar Basin, China
J37-A | J37-B | J174-A | |||||
|---|---|---|---|---|---|---|---|
Upper part sampled by a micro-drilla | Lower part sampled by a micro-drilla | Bulkb | Bulka | Upper part sampled by a micro-drilla | Lower part sampled by a micro-drilla | Bulkb | |
Dolomite (ferriferous) | 72.80% | 17.40% | 52.00% | 58.90% | 68.00% | 26.20% | 50.00% |
Albite | 6.80% | 23.80% | 12.00% | 18.10% | 27.70% | 23.00% | |
Potassium feldspar | 8.20% | 20.50% | 12.00% | ||||
Buddingtonite | 5.40% | 37.40% | 20.00% | ||||
Analcime | 18.60% | 10.00% | |||||
Quartz | 12.20% | 17.70% | 14.00% | 8.40% | 3.90% | 5.00% | |
Quartz (chalcedony) | 41.10% | ||||||
Calcite | 4.80% | 2.00% | |||||
Illite | 2.00% | trace | |||||
Biotite | trace | ||||||
Rock naming | Analcime-feldspar dolostone (AFD) | Silicic dolostone (SD) | Buddingtonite-albite dolostone (BAD) | ||||