>
Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Gurmeet Singh posted an Question
November 10, 2020 • 16:34 pm
![]()
30 points
30 points
- IIT JAM
- Geology (GG)
18. in a vein body comprising 'galena pyrite - sphalerite - quartz', which is/are the gangue mineral(s))? a. quartz and pyrite b. sphalerite and quartz c. galen
18. In a vein body comprising 'galena pyrite - sphalerite - quartz', which is/are the gangue mineral(s))? A. Quartz and pyrite B. Sphalerite and quartz C. Galena and sphalerite D. Only quartz (DU-2015) IIT JAM GG USP (1-15) 2019 One degree of latitude equals. seconds.
1 Answer(s)
Answer Now
- 0 Likes
- 3 Comments
- 0 Shares
-
![comment-profile-img]()
>
-
![comment-profile-img]()
>
Rahul kumar Best Answer
Answer (A) Quartz and Pyrite Quartz and Pyrite commonly occur as the gangue minerals in any ore body. Quartz is a type of silicate gangue mineral and Pyrite is a type of sulfide gangue mineral. Sphalerite and Galena are ore minerals having good amount of metal content and hence not considered as gangue minerals.
![eduncle-logo-app]()
thankyou sir i am satisfied with ur comment but FeS2 ( pyrite) should not be as gangue as we can extract sulphur from it.
![eduncle-logo-app]()
sir , kya mera question galt hai. ??. do i need to correct
![eduncle-logo-app]()
Yes, you can extract sulphur from pyrite but here in the question you have an assemblage of metallic ore minerals (Galena, sphalerite etc.) and sulpher is a non-metal. You are not expected to treat a non-metal (sulpher) as an economic mineral for a given assemblage of metallic minerals. So, here in this case pyrite can be considered as a gangue mineral.
-
Gurmeet singh
sir i thought as qtz as answer but c option given ans.
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
Sign Up to Download FREE Study Material Worth Rs. 500/-
Rahul kumar
option-C can not be an answer because both Galena and sphalerite are ore minerals. If c is the given Answer then that option is wrong.