Discussion
Feldspar is described as an incongruently melting mineral, which means it
Answer: C
Correct answer: melts to a liquid plus a solid phase together
Heated past about 1150 degrees, potash feldspar does not melt cleanly: it decomposes to a potassium aluminosilicate liquid together with solid leucite. That behaviour is what makes it a useful body flux rather than a glass - the melt appears gradually over a range of temperature instead of all at once, which is precisely what gives a feldspathic body any firing range at all.
No comment is present. Be the first to comment.
Loading…
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