Garry Platt writes:
Dominican Republic amber, probably the world’s second largest deposit following that of the Baltic amber region, strangely does not have a unique name but can be called amber because of the presence of Succinic acid though not to the same level as Baltic amber. It is commonly referred to as Dominican Republic amber. Throughout the island are numerous mines which tap into different deposits of amber. Laid down in successive layers the age of the amber extracted can vary from between 15 - 40 million years. The tree origin has been established by Poinar as Hymenaea protera.
More info @ http://www.gplatt.demon.co.uk/typesof.htm
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