Eleven reported laboratory syntheses of pyrite framboids are critically reviewed. Pyrite
framboids are defined as microscopic spheroidal to sub-spheroidal clusters of …

Framboids, microscopic sub-spheroidal aggregates of pyrite microcrystals, are found in
sediments of all ages and framboid size-frequency distributions are widely used to …

Pyrite framboids are densely packed, generally spherical aggregates of submicron-sized
pyrite crystals. In this study, a survey was made of framboid size distributions in recently …

Pyrite framboid formation may be the result of four consecutive processes:(1) nucleation and
growth of initial iron monosulfide microcrystals;(2) reaction of the microcrystals to greigite …

La pyrite est a l'industrie chimique ce que le pain est a l'alimentration de l'homme (P.
Truchot, 1907). 1 One of the surprising features of modern chemistry is that the chemistry of …

Pyrite framboids have been synthesised as the product of the oxidation of FeS (mackinawite)
by H2S in aqueous solutions at pH 6, Eh>− 250 mV and temperatures above 60° C in the …

Geologic studies in the Appalachian region have shown that many parameters of coal beds
(thickness, continuity, roof and floor rock, sulfur and trace-element content, and ash) can be …

Pyrite textures, isotopic compositions, and measurements of sediment reactive iron content
have been studied on a radial traverse of pyritiferous carbonate concretions. An early …

Determination of the geochemical and mineralogical characteristics of coal can provide
useful information on the geological setting and evolution of coal basins and assist in …

It has been suggested that the two morphologies of sedimentary pyrite, framboids and
euhedra, may reflect two distinct pathways of pyrite formation. Framboids form indirectly via …