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4. Adakitic rocks in the Masara gold-silver mine, Compostela Valley, Mindanao, Philippines: Different places, varying mechanisms?

Author

Yumul, Graciano P., primary, Brown, Walter W., additional, Dimalanta, Carla B., additional, Ausa, Carlito A., additional, Faustino-Eslava, Decibel V., additional, Payot, Betchaida D., additional, Ramos, Noelynna T., additional, Lizada, Adrian Nicol L., additional, Buena, Alfred Elmer, additional, Villaplaza, Barbie Ross B., additional, Manalo, Pearlyn C., additional, Queaño, Karlo L., additional, Guotana, Juan Miguel R., additional, and Pacle, Nichole Anthony D., additional

Published
2017
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5. Adakitic rocks in the Masara gold-silver mine, Compostela Valley, Mindanao, Philippines: Different places, varying mechanisms?

Author

Jr.Yumul, Graciano P., Brown, Walter W., Dimalanta, Carla B., Ausa, Carlito A., Faustino-Eslava, Decibel V., Payot, Betchaida D., Ramos, Noelynna T., Lizada, Adrian Nicol L., Buena, Alfred Elmer, Villaplaza, Barbie Ross B., Manalo, Pearlyn C., Queaño, Karlo L., Guotana, Juan Miguel R., and Pacle, Nichole Anthony D.

Subjects
*ADAKITE, *MINERALIZATION, *HIGH temperatures, *CRYSTALLIZATION
Abstract

The presence of adakites has been used as an indicator for the occurrence of gold mineralization in many mineral prospecting works. Traditionally, the unique geodynamic controls to adakite formation, particularly the high temperature gradient and other slab-melting requirements, have been taken as key elements that must be present during their formation. However, several studies have suggested alternative mechanisms. This paper presents fractional crystallization as the most viable mechanism for the generation of adakitic rocks in the Masara gold-silver mine in Eastern Mindanao, Philippines. Furthermore, this paper also argues that the occurrence of adakitic rocks does not necessarily indicate the presence of mineralization. Depending on the scale, their occurrence may be an exploration marker at a regional or district level, but at the mine-level, other more localized parameters will have to be considered. [ABSTRACT FROM AUTHOR]

Published
2017
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