Prominent among these are glycerin and succinic acid.
7 succinic acid, 3.2 glycerin and 1.
Whilst succinite is the common variety of European amber, the following varieties also occur: Gedanite, or "brittle amber," closely resembling succinite, but much more brittle, not quite so hard, with a lower meltingpoint and containing no succinic acid.
Stantienite, a brittle, deep brownish-black resin, destitute of succinic acid.
Burmite and simetite agree also in being destitute of succinic acid.