The inlay in the left canine is a convex-faced disk of pyrite, while the inlay for the right canine is missing.
Accessory phenocrysts include untwinned albite of < 8 %, magnetite < 4 % and zircon in trace, as well as replacement pyrite of < 12 % and chalcopyrite in trace.
The sulphide phase involves the precipitation of both fine-grained and coarsely crystalline sulphides (chalcopyrite, sphalerite, galena, pyrite) with quartz, dolomite, calcite, malachite and pink baryte.
Most are flattened; the remainder are preserved in three dimensions, but have suffered from 'pyrite disease' (decomposition).
It is based on the idea that the amount of pyrite formed in the sediment depends on the availability of iron (and/or organic carbon).
Analysis of anions leached from rock samples suggests that subsurface pyrite weathering is centered at two zones within the ore body.
Yet when the average speaker employs "gold," he or she refers to gold and not (also) to iron pyrite.
Studies of ancient sediments reveal pyrite framboid analyses can additionally provide a subtle indicator of environmental stability.
