30 points
>
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)
- IIT JAM
- Geology (GG)
Among the following ores, of which is gossan a characteristic surface indicator? is the answer (c) pyrolusite - psilomelane?
Among the following ores, of which is gossan a characteristic surface indicator? (B) chromite-magnetite (D) columbite-tantalite (A) Pyrite-chalcopyrite (C)Pyrolusite-psilomelane
1 Answer(s)
Answer Now
- 1 Likes
- 1 Comments
- 0 Shares
-
![comment-profile-img]()
>
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/-
Sajan sarthak![best-answer]()
And is C pyrolusite -psilomelane Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein. In the classic gossan or iron cap all that remains is iron oxides and quartz, often in the form of boxworks (which are quartz-lined cavities retaining the shape of the dissolved ore minerals). Frequently, gossan appears as a red "stain" against the background rock and soil, due to the abundance of oxidized iron; . Although most gossans are red, orange, or yellow, black gossans from manganese oxides such as pyrolusite, manganite, and especially psilomelane form at the oxidized portion of manganese-rich mineral deposits.
thank u