This paper is published in Volume-4, Issue-4, 2018
Area
Maharashtra
Author
Jadhav Raju D
Co-authors
Mali Harishchandra B.
Org/Univ
Naushad Ali Sarovar Samvardhini, Mumbai, Maharashtra, India
Pub. Date
23 July, 2018
Paper ID
V4I4-1278
Publisher
Keywords
Crater lake rocks, Lonar, White rusting phenomena, Volcanic eruptions, Basalts

Citationsacebook

IEEE
Jadhav Raju D, Mali Harishchandra B.. “White rusting of rocks”– The phenomena observed at Lonar crater lake, International Journal of Advance Research, Ideas and Innovations in Technology, www.IJARIIT.com.

APA
Jadhav Raju D, Mali Harishchandra B. (2018). “White rusting of rocks”– The phenomena observed at Lonar crater lake. International Journal of Advance Research, Ideas and Innovations in Technology, 4(4) www.IJARIIT.com.

MLA
Jadhav Raju D, Mali Harishchandra B.. "“White rusting of rocks”– The phenomena observed at Lonar crater lake." International Journal of Advance Research, Ideas and Innovations in Technology 4.4 (2018). www.IJARIIT.com.

Abstract

Abstract For the first time, white rusting/white coating of Silica on basaltic rocks has been observed at Lonar Crater Lake. Silica coating has been observed on basaltic rocks of Kilauea flow in Ka’u Desert on Hawaiian volcanic islands and has also been observed on the surface of Mars at Gusev Crater. The term white rusting/white coating of silica has been used for the same feature i.e., silica coating. White rusting /white coating phenomena observed on basaltic rocks of Lonar Crater Lake shows similarity to the silica coating observed on basaltic rocks of Kilauea flow in Ka’u Desert. Representative rock samples covered by white layer/white coating/white rusting were collected and after removal of the white-coated part were analyzed by XRF, showed that major oxide component was Silica (SiO₂) – 95-97 % mass of amorphous nature with minor quantities of SO₃, Fe₂O₃, Al₂O₃, CaO, and Cr₂O₃. The oxide content detected in white coating component at Lonar and that detected in silica coating on basaltic rocks of Kilauea flow in Ka’u Desert of Hawaiian volcanic islands shows good agreement which infers that similar process or unknown process may be operating at Lonar Crater Lake. From the studies carried by different researchers on silica coating on basaltic rocks of volcanic origin, it infers that the formation of white rusting at Lonar crater lake may be related to volcanic eruption or weathering conditions or physical changes due to climatic conditions existing at Lonar from the time the lake was formed. The white rusting is known to be a polymorph of silica in which SiO₂ value is found to be 95 – 97 mass %. This paper reports the first-hand information of observations and findings of white rusting/ white layer coating phenomena on basaltic rocks at Lonar Crater Lake on a preliminary basis and to put on record the works carried out regarding white coating phenomena with respect to silica coating on basaltic rocks of Kilauea flows in Ka’u Desert on Hawaiian volcanic islands.
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