Occurrence and Composition of Manganese Oxide Minerals From the Chikkanayakana Halli Manganese Deposit, Dharwar Craton, Southern India

2012 ◽  
Vol 3 (3) ◽  
pp. 12-16
Author(s):  
CHINNAIAH CHINNAIAH ◽  
Keyword(s):  
Manganese Oxide ◽  
Dharwar Craton ◽  
Southern India ◽  
Manganese Deposit ◽  
Oxide Minerals

scholarly journals Mineralogical Characterization of Manganese Oxide Minerals of the Devonian Xialei Manganese Deposit

Minerals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1243
Author(s):  
Sida Niu ◽  
Liqun Zhao ◽  
Xiaoju Lin ◽  
Tong Chen ◽  
Yingchao Wang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Manganese Oxide ◽  
Spherical Particles ◽  
Manganese Ore ◽  
Manganese Deposit ◽  
Mineralogical Characterization ◽  
Mn Oxide ◽  
Oxide Minerals ◽  
Scanning Electron

The Guangxi Zhuang Autonomous Region is an important manganese ore district in Southwest China, with manganese ore resource reserves accounting for 23% of the total manganese ore resource reserves in China. The Xialei manganese deposit (Daxin County, Guangxi) is the first super-large manganese deposit discovered in China. The Mn oxide in the supergene oxidation zone of the Xialei deposit was characterized using scanning electron microscopy (SEM), energy spectrometer (EDS), transmission electron microscopy (TEM, HRTEM), and X-ray diffraction analysis (XRD). The Mn oxides have a gray-black/steel-gray color, a semi-metallic-earthy luster, and appear as oolitic, pisolitic, banded, massive, and cellular textures. Scanning electron microscopy images show that the manganese oxide minerals are present as fine-spherical particles with an earthy surface. TEM and HRTEM indicate the presence of oriented bundled and staggered nanorods, and nanopores between the crystals. The Mn oxide ore can be classified into two textural types: (1) oolitic and pisolitic (often with annuli) Mn oxide, and (2) massive Mn oxide. Pyrolusite, cryptomelane, and hollandite are the main Mn oxide minerals. The potassium contents of cryptomelane and pyrolusite are discussed. The unit cell parameters of pyrolusite are refined.

Studies on manganese oxide minerals. IX. Rancieite

1969 ◽  
Vol 92 (2) ◽  
pp. 191-195 ◽  
Author(s):  
W. E. Richmond ◽  
Michael Fleischer ◽  
Mary E. Mrose
Keyword(s):  
Manganese Oxide ◽  
Oxide Minerals

Fracture-lining manganese oxide minerals in silicic tuff, Yucca Mountain, Nevada, U.S.A.

1993 ◽  
Vol 107 (1-2) ◽  
pp. 47-69 ◽  
Author(s):  
Barbara A. Carlos ◽  
Steve J. Chipera ◽  
David L. Bish ◽  
Sandra J. Craven
Keyword(s):  
Manganese Oxide ◽  
Yucca Mountain ◽  
Oxide Minerals

Mafic and ultramafic magmatism and associated mineralization in the Dharwar craton, southern India

2009 ◽  
Vol 73 (1) ◽  
pp. 73-100 ◽  
Author(s):  
T. C. Devaraju ◽  
R. P. Viljoen ◽  
R. H. Sawkar ◽  
T. L. Sudhakara
Keyword(s):  
Dharwar Craton ◽  
Southern India

scholarly journals Manganese Oxide Minerals Formed by Microbial Mediation.

2000 ◽  
Vol 9 (4) ◽  
pp. 193-204 ◽  
Author(s):  
Yoshio Sato ◽  
Junko Hayashi ◽  
Mari Nishimori ◽  
Shin-ichi Ono ◽  
Noburu Takematsu
Keyword(s):  
Manganese Oxide ◽  
Oxide Minerals ◽  
Microbial Mediation
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