These are images of polished sections. Field of view is 0.8 mm in maximum dimension. Photographs from Oen et al . Drawings showing the growth-sequence relations of the tips of nickel arsenide dendrites. Drawings from Oen et al .
Some fluorite is colored violet in contact with arsenides.
Subsequent alterations have produced minor amounts of pimelite and annabergite. Koenig did not mention dendrites, but they are commonly not apparent until the assemblage is sliced into slabs. Considering the statements of Koenig and Palache, it is very surprising that only a small number of specimens are known or could be located by the writer. The writer's dissolution of some calcite matrix in search of other associated species found insoluble residues of rutile, chlorite, and pararammelsbergite.