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Obsidian that occurs as rounded to subangular bodies, usually less than 2 inches (5.1 cm) in diameter and having indented surfaces. These bodies occur in masses of perlite and are of special interest because of their low water content as compared with the surrounding perlite. The name is from the Marekanka River, Okhotsk, Siberia, Russia.

Marekanite (obsidian balls) have also been found at Cerro Tijerina, central Nicaragua and appear identical to apache tears.

Compare with apache tears.

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Classification of MarekaniteHide

References for MarekaniteHide

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Ljunggren, P. (1960) A Formation of Marekanite at El Fiscal, Geological Magazine, 97:1, 49-52.
Mrázová, S., Gadas, P. (2011) Obsidian balls (marekanite) from Cerro Tijeerina, central Nicaragua: petrographic investigations. Journal of Geosciences, 56, 43-49.

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