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Article

A Study on the Formation Environment of the La Cumbre Amber Deposit, from Santiago Province, the Northwestern Part of the Dominican Republic

by
Paweł Stach
1,*,
Lucyna Natkaniec-Nowak
1,
Marian Wagner
1,
Magdalena Dumańska-Słowik
1,
Maja Mroczkowska-Szerszeń
2,
Aleksandra Wesełucha-Birczyńska
3,
Przemysław Drzewicz
4,
Carlos George
5 and
Edwin Garcia
6
1
Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059 Krakow, Poland
2
Oil and Gas Institute–National Research Institute, 25 Lubicz Str., 31-503 Krakow, Poland
3
Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Str., 30-387 Krakow, Poland
4
The Polish Geological Institute–National Research Institute, 4 Rakowiecka Str., 00-975 Warsaw, Poland
5
Dirección General de Minería, L. Navarro Av., Santo Domingo 10201, Dominican Republic
6
Faculty of Engineering and Natural Resources, UTECO La Universidad Tecnologica del Cibao Oriental, Ave Universitaria No. 100, Cotuí 43000, Dominican Republic
*
Author to whom correspondence should be addressed.
Minerals 2020, 10(9), 736; https://doi.org/10.3390/min10090736
Submission received: 18 July 2020 / Revised: 10 August 2020 / Accepted: 12 August 2020 / Published: 21 August 2020
(This article belongs to the Section Mineral Deposits)
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Abstract

The amber-bearing coaly shale from the La Cumbre deposit (Cordillera Septentrional, Dominican Republic) contains a large quantity of altered, coalified plant detritus. The coals in these shales are in the transition stage from meta-lignite to subbituminous coals. They are composed mainly of inertinite macerals such as fusinite, semifusinite, macrinite and secretinite. Fossil resin found in the deposit occurs in two forms: detrital grains up to several centimetres in size (type I) and very fine authigenic grains, of a few micrometers in size, inside the humic laminae (type II, resinite). The detrital fossil resins are transparent, with few mineral and organic inclusions. In their composition they contain sulfides, which may come from sulfate reduction, inclusions of plants and/or insects or be caused by volcanic activity developed in surrounding coal series. The resinites are strongly saturated with various inclusions and spatially associated with framboidal pyrite aggregates. Both fossil resin types were probably deposited in a shallow coastal lake environment in the zone bordering the floodplain of the river, with periodic floods. The marine environment conditions, which were progressively changing from oxidizing to reducing, are likely associated with the formation of the fossil resin.
Keywords: Dominican amber; La Cumbre deposit; Raman spectroscopy; facies analyses; petrology; coaly shale Dominican amber; La Cumbre deposit; Raman spectroscopy; facies analyses; petrology; coaly shale

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MDPI and ACS Style

Stach, P.; Natkaniec-Nowak, L.; Wagner, M.; Dumańska-Słowik, M.; Mroczkowska-Szerszeń, M.; Wesełucha-Birczyńska, A.; Drzewicz, P.; George, C.; Garcia, E. A Study on the Formation Environment of the La Cumbre Amber Deposit, from Santiago Province, the Northwestern Part of the Dominican Republic. Minerals 2020, 10, 736. https://doi.org/10.3390/min10090736

AMA Style

Stach P, Natkaniec-Nowak L, Wagner M, Dumańska-Słowik M, Mroczkowska-Szerszeń M, Wesełucha-Birczyńska A, Drzewicz P, George C, Garcia E. A Study on the Formation Environment of the La Cumbre Amber Deposit, from Santiago Province, the Northwestern Part of the Dominican Republic. Minerals. 2020; 10(9):736. https://doi.org/10.3390/min10090736

Chicago/Turabian Style

Stach, Paweł, Lucyna Natkaniec-Nowak, Marian Wagner, Magdalena Dumańska-Słowik, Maja Mroczkowska-Szerszeń, Aleksandra Wesełucha-Birczyńska, Przemysław Drzewicz, Carlos George, and Edwin Garcia. 2020. "A Study on the Formation Environment of the La Cumbre Amber Deposit, from Santiago Province, the Northwestern Part of the Dominican Republic" Minerals 10, no. 9: 736. https://doi.org/10.3390/min10090736

APA Style

Stach, P., Natkaniec-Nowak, L., Wagner, M., Dumańska-Słowik, M., Mroczkowska-Szerszeń, M., Wesełucha-Birczyńska, A., Drzewicz, P., George, C., & Garcia, E. (2020). A Study on the Formation Environment of the La Cumbre Amber Deposit, from Santiago Province, the Northwestern Part of the Dominican Republic. Minerals, 10(9), 736. https://doi.org/10.3390/min10090736

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