Discussion
Amongst the following, which mineral phase has highest condensation temperature ?
Answer: C
Corundum has the highest condensation temperature of the four.
In equilibrium condensation calculations for a gas of solar composition, the first solids to appear are the refractory calcium-aluminium oxides and silicates. Corundum (Al2O3) condenses first, at roughly 1,700 K at the pressures assumed for the solar nebula, which is why such minerals are found in the calcium-aluminium-rich inclusions of chondrites.
Anorthite and the magnesium silicates such as forsterite and enstatite condense later, at lower temperatures of a few hundred kelvin less. Magnetite forms only at low temperature, by oxidation of metallic iron, near the end of the sequence.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development