Two forms of crystals are observed with the acidic gold chloride reagent. The hexagonal plates are more prominent and grow end to end as large stacks. They appear bright white or bluish white under crossed polars. Flat thin blades that appear as needles when oriented on their sides are also observed. These are brightly colored under crossed polars.
The large flat hexagonal plates are suitable for IR microspectroscopy.
Printing is not supported at the primary Gallery Thumbnail page. Please first navigate to a specific Image before printing.
