Anukruti posted an Question
October 21, 2020 • 04:14 am 30 points
  • IIT JAM
  • Geology (GG)

Question below

2 Answer(s) Answer Now
  • 1 Likes
  • 2 Comments
  • 0 Shares
  • comment-profile-img>
    Sajan sarthak Best Answer

    Sieve texture is common in plagioclase or in pyroxene crystals in extrusive volcanic rocks; . Granite is intrusive so it's Elliminated. zeolite is metamorphic , and scapolite doesn't show this texture. I think none of the above

    cropped6242145471390745092.jpg
  • comment-profile-img>
    Rahul kumar best-answer

    Answer (D) None of the above Plagioclase and few pyroxenes commonly show sieve texture. A sieve is a texture in an igneous rock in which a crystal consists of a fine-grained mesh, usually with a glassy groundmass. Sieve textures are usually surrounded by an overgrowth rim and often are xenocrysts. A Granite containing abundant plagioclase can also show sieve texture but it's uncommon in Granites.

whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers