(*) The largest open-cut mine producing it is located in Kaliningrad Oblast, near a museum with over 6,000 pieces of it.
In 1677, Philip Hartmann published the first book on this substance and described fishing for this substance by scooping up masses of floating seaweed. Later methods of collecting it near Gdansk involved using long prongs or forks to dislodge it from the seafloor, though its buoyancy allows it to be collected directly from the Baltic Sea. It is placed into two main classes, succinites and retinites. Though greenish and violet-tinted specimens exist, a particularly rare and valuable variety is mined from blue glauconite clay in the hills of the Dominican Republic and is believed to date from the Miocene or Oligocene.(*) The largest open-cut mine producing it is located in Kaliningrad Oblast, near a museum with over 6,000 pieces of it. The word "electricity" was derived from the Greek name for this substance, which produces a piney smoke when burned. For 10 points, name this usually yellow or honey-colored "gem of Lithuania", fossilized tree resin which sometimes contains entrapped plant matter or insects.
In 1677, Philip Hartmann published the first book on this substance and described fishing for this substance by scooping up masses of floating seaweed.
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