Franz Ernst Bruckmann

Franz Ernst Bruckmann (September 27, 1697 – March 21, 1753) was a German mineralogist born at Marienthal near Helmstedt. Having qualified as a medical man in 1721, he practised at Brunswick and afterwards at Wolfenbuttel. His leisure time was given up to natural history, and especially to mineralogy and botany. He appears to have been the first to introduce the term oolithus to rocks that resemble in structure the roe of a fish; whence the terms oolite and oolitic. He died at Wolfenbuttel.

His publications include Magnalia Dei in locis subterraneis (Brunswick, 1727), Historia naturalis curiosa lapidis (1727), and Thesaurus subterraneus Ducatus Brunsvigii (1728).